175. Ebrahim-Zadeh, Majid, Amr S. Helmy, Giuseppe Leo, and Peter G. Schunemann. Mid-infrared coherent sources and applications: introduction. The Journal of the Optical Society of America (JOSA) B. 40(1): 1-5. (2023).

174.Ebrahimi, Manuchehr, Amr S. Helmy, and Nazir P. Kherani. Plasmon Coupling—The Root Cause of Raman Anomaly and Laser Cooling in Nanocrystal Ge. Advanced Photonics Research. 4(2): 2200251-2200260. (2023).

173.Janjua, B., T. Stirling, M. L. Iu, Z. Yan, and A. S. Helmy. High Peak Power Ultrashort Pulsed Passively Q-switched Mode-Locked Bragg Laser Diode. IEEE Photonics Technology Letters.35(17): 943-946 (2023).

172.Li, Tengfei, Amr S. Helmy, Haiyun Liu, and Qihua Xiong. Narrow bandwidth perfect absorber based on composite hybrid plasmonics. Optical Materials Express. 13(7): 2135-2146. (2023).

171.Alfaraj, Nasir, Charles Chih-Chin Lin, Sherif Nasif, Swati Rajput, and Amr S. Helmy. Facile integration of electro-optic SiO 2/ITO heterointerfaces in MIS structures for CMOS-compatible plasmonic waveguide modulation. Light: Advanced Manufacturing 4(38) : 1-17. (2023).

170. Liu, Han, Changhao Qin, Georgios Papangelakis, Meng Lon Iu, and Amr S. Helmy. Compact all-fiber quantum-inspired LiDAR with over 100 dB noise rejection and single photon sensitivity. Nature Communications. 14(1): 5344-5354. (2023).

169.Ding, Xiangyan, Jing Ma, Liying Tan, Amr S. Helmy, and Dongpeng Kang. Biphoton engineering using modal spatial overlap on-chip. Optics Letters. 47(23): 6097-6100. (2022).

168. Janjua, B., Meng Lon Iu, Z. Leger, Z. Yan, and Amr S. Helmy. Colliding-Pulse Mode-Locking Produce 130 fs Pulses, Enabling Record χ2 Frequency Conversion. IEEE Photonics Technology Letters. 35(2):105-108. (2022).

167. Blakey, Phillip S., Han Liu, Georgios Papangelakis, Yutian Zhang, Zacharie M. Léger, Meng Lon Iu, and Amr S. Helmy. Quantum and non-local effects offer over 40 dB noise resilience advantage towards quantum lidar. Nature Communications. 13(1): 5633-5641. (2022).

166. Chang, Po-Han, Charles Lin, and Amr S. Helmy. Field canalization using anisotropic 2D plasmonics. npj 2D Materials and Applications. 6(1): 5-14. (2022).

165.Yan, Zhizhong, Haoyu He, Han Liu, M. Iu, O. Ahmed, Eric Chen, Phillip Blakey, Youichi Akasaka, Tadashi Ikeuchi, and Amr S. Helmy. χ2-based AlGaAs phase sensitive amplifier with record gain, noise, and sensitivity. Optica. 9(1): 56-60. (2022).

164. Yan, Zhizhong, Haoyu He, Han Liu, Meng Iu, Osman Ahmed, Eric Chen, Youichi Akasaka, Tadashi Ikeuchi, and Amr S. Helmy. An Optical Parametric Amplifier via χ(2) in AlGaAs Waveguides. Journal of Lightwave Technology. 40(17): 5943-5951. (2022).

163.Eleftheriades, Basil G., Emily E. Storey, and Amr S. Helmy. Label‐Free Spontaneous Raman Sensing in Photonic Crystal Fibers with Nanomolar Sensitivity. Advanced Optical Materials. 10(6): 2101117-2101124. (2022).

162. Storey, Emily E., Duxuan Wu, and Amr S. Helmy. Enhanced Sensitivity for Quantifying Disease Markers via Raman and Machine-Learning of Circulating Biofluids in Optofluidic Chips. Journal of Lightwave Technology. 39(17): 5634-5642. (2021).

161. Chang, Po-Han, Charles Lin, and Amr S. Helmy. Integrated photonic functions using anisotropic 2D material structures. Journal of Lightwave Technology. 39(23): 7464-7471.(2021).

160. Janjua, Bilal, Meng Lon Iu, Zhizhong Yan, Paul Charles, Eric Chen, and Amr S. Helmy. Distributed feedback lasers using surface gratings in Bragg waveguides. Optics Letters. 46(15): 3689-3692.(2021).

159. C. J. McKinstrie, T. J. Stirling, and A. S. Helmy. Laser linewidths: tutorial. The Journal of the Optical Society of America (JOSA) B. 38(12): 3837-3848. (2021).

158. Kang, Dongpeng, Weiqi Zhang, Amr S. Helmy, Siyuan Yu, Liying Tan, and Jing Ma. Wavelength Conversion Efficiency Enhancement in Modal Phase Matched χ(2) Nonlinear Waveguides. IEEE Photonics Journal. 13(3): 1-9. (2021).

157. Cai, Mujin, Zhiyi Wu, Zhao Li, Lu Wang, Wei Sun, Athanasios A. Tountas, Chaoran Li et al. Greenhouse-inspired supra-photothermal CO2 catalysis. Nature Energy. 6(8): 807-814.(2021).

156. Bilal Janjua, Meng Lon Iu, Zhizhong Yan, Paul Charles, Eric Chen, and Amr S. Helmy. Distributed feedback lasers using surface gratings in Bragg waveguides. Optics Letters. 46(15): 3689-3692. (2021).

155. C. J. McKinstrie, T. J. Stirling, and A. S. Helmy. Stochastic systems: tutorial. The Journal of the Optical Society of America (JOSA) B. 38(12): 3818-3836. (2021).

154. Xiangyan Ding, Jing Ma, Liying Tan, Amr S. Helmy, and Dongpeng Kang. Spectrally pure photon pair generation in asymmetric heterogeneously coupled waveguides. Optics Letters. 46(12): 3000-3003. (2021).

153. Po-Han Chang, Charles Lin, Nader Engheta, and Amr S. Helmy. Tailoring of modal losses in anisotropic 2D material ribbons by regulating material absorption. The Journal of the Optical Society of America (JOSA) B. 37(12): 3681-3689. (2020).

152. Lin, Charles Chih-Chin, Po-Han Chang, and Amr S. Helmy. Supermode Hybridization: A Material-Independent Route toward Record Schottky Detection Sensitivity Using

151. Wang, Lu, Yuchan Dong, Tingjiang Yan, Zhixin Hu, Feysal M. Ali, Débora Motta Meira, Paul N. Duchesne et al. Black indium oxide a photothermal CO2 hydrogenation catalyst. Nature communications. 11(1): 2432-2440. (2020).

150. CCC Lin, P. Chang, Y. Su, and Amr. S. Helmy. Monolithic Plasmonic Waveguide Architecture for Passive and Active Optical Circuits. ACS Nano Letters. 20(12): 8500-8507. (2020).

149.Liu, Han, and Amr S. Helmy. Joint measurement of time–frequency entanglement via sum frequency generation. npj Quantum Information. 6(1): 66-72. (2020)

148. Janjua, Bilal, Meng Lon Iu, Zhizhong Yan, Paul Charles, Eric Chen, and Amr S. Helmy. Passively mode-locked Bragg lasers with 64 GHz sub-300 fs pulses at 785 nm. IEEE Photonics Technology Letters. 32(18): 1135-1138. (2020).

147.Iu, Meng Lon, Nima Zareian, Dongpeng Kang, Eric Chen, Paul Charles, Bilal Janjua, Youichi Akasaka, Tadashi Ikeuchi, and Amr S. Helmy. Electrically pumped efficient broadband CW frequency conversion in diode lasers using bulk χ2. APL Photonics .5(1): 1-6. (2020).

146. B Janjua, Meng Iu, P. Charles, E. Chen, A. S. Helmy. Single mode ring Bragg laser diodes. Optics Letter, vol. 45(9): 2490-2493. (2020).

145.Liu, Han, and Amr S. Helmy. Enhancing classical target detection performance using nonclassical light. IEEE Aerospace and Electronic Systems Magazine. 35(4): 36-46. (2020).

144. Liu, Han, Bhashyam Balaji, and Amr S. Helmy. Target detection aided by quantum temporal correlations: Theoretical analysis and experimental validation. IEEE Transactions on Aerospace and Electronic Systems. 56(5): 3529-3544. (2020).

143. He, Haoyu, Daniel Giovannini, Han Liu, Eric Chen, Zhizhong Yan, and Amr S. Helmy. Non-classical semiconductor photon sources enhancing the performance of classical target detection systems. Journal of Lightwave Technology. 38(16): 4540-4547. (2020).

142.Liu, Han, Daniel Giovannini, Haoyu He, Duncan England, Benjamin J. Sussman, Bhashyam Balaji, and Amr S. Helmy. Enhancing LIDAR performance metrics using continuous-wave photon-pair sources. Optica. 6(10): 1349-1355. (2019).

141. Wong, Herman MK, Zhizhong Yan, Kent A. Hallman, Robert E. Marvel, Rohit P. Prasankumar, Richard F. Haglund Jr, and Amr S. Helmy. Broadband, integrated, micron-scale, all-optical Si3N4/VO2 modulators with pJ switching energy. Acs Photonics. 6(11): 2734-2740.(2019).

140.Rofouie, Pardis, Elizabeth Galati, Lu Sun, Amr S. Helmy, and Eugenia Kumacheva. Hybrid cholesteric films with tailored polarization rotation. Advanced Functional Materials. 29(43): 1905552-1905559. (2019).

139. Storey, Emily E., and Amr S. Helmy. Optimized preprocessing and machine learning for quantitative Raman spectroscopy in biology. Journal of Raman Spectroscopy. 50(7): 958-968. (2019).

138. Su, Y., P. Chang, C. Lin, and A. S. Helmy. Record Purcell factors in ultracompact hybrid plasmonic ring resonators. Science advances. 5(8): 1-7. (2019).

137. Wong, Herman MK, Mohsen Kamandar Dezfouli, Lu Sun, Stephen Hughes, and Amr S. Helmy. Nanoscale plasmonic slot waveguides for enhanced Raman spectroscopy. Physical Review B. 98(8): 085124-085145. (2018).

136.Brodutch, Aharon, Ryan Marchildon, and Amr S. Helmy. Dynamically reconfigurable sources for arbitrary Gaussian states in integrated photonics circuits. Optics Express. 26(13): 17635-17648. (2018). (pdf)

135. Léger, Zacharie M., Aharon Brodutch, and Amr S. Helmy. Entanglement enhancement in multimode integrated circuits. Physical Review A .97(6): 062303-062315. (2018). (pdf)

134. Firby, Curtis J., PoHan Chang, Amr S. Helmy, and Abdulhakem Y. Elezzabi. Versatile broadband polarization-independent optical circulators for nanophotonic integrated circuits. The Journal of the Optical Society of America (JOSA) B. 35(7): 1504-1513. (2018). (pdf)

133. Zareian, Nima, Dongpeng Kang, and Amr S. Helmy. Tuning parametric processes in semiconductor diode lasers. The Journal of the Optical Society of America (JOSA) B. 35(3): 552-557.(2018). (pdf)

132.Wong, Herman MK, and Amr S. Helmy. Performance enhancement of nanoscale VO 2 modulators using hybrid plasmonics. Journal of Lightwave Technology. 36(3): 797-808. (2017).(pdf)

131.Jia, Jia, Hong Wang, Zhuole Lu, Paul G. O'Brien, Mireille Ghoussoub, Paul Duchesne, Ziqi Zheng et al. Photothermal catalyst engineering: hydrogenation of gaseous CO2 with high activity and tailored selectivity. Advanced Science. 4(10): 1700252-1700265.(2017). (pdf)

130.Chang, PoHan, Charles Lin, and Amr S. Helmy. Efficient Integrated Graphene Photonics in the Visible and Near‐IR. Laser & Photonics Reviews. 11(5): 1700003-1700008. (2017). (pdf)

129.Su, Yiwen, Charles Lin, PoHan Chang, and Amr S. Helmy. Highly sensitive wavelength-scale amorphous hybrid plasmonic detectors. Optica. 4(10): 1259-1262. (2017). (pdf)

128. Wong, Herman MK, Mohsen Kamandar Dezfouli, Simon Axelrod, Stephen Hughes, and Amr S. Helmy. Theory of hyperbolic stratified nanostructures for surface-enhanced Raman scattering. Physical Review B. 96(20): 205112-205128. (2017). pdf)

127. Sun, Wei, Grace Zhong, Christian Kübel, Feysal M. Ali, Chenxi Qian, Lu Wang, Manuchehr Ebrahimi, Laura M. Reyes, Amr S. Helmy, and Geoffrey A. Ozin. Size‐tunable photothermal germanium nanocrystals. Angewandte Chemie International Edition. 56(22): 6329-6334. (2017). (pdf)

126. Axelrod, Simon, Mohsen Kamandar Dezfouli, Herman MK Wong, Amr S. Helmy, and Stephen Hughes. Hyperbolic metamaterial nanoresonators make poor single-photon sources. Physical Review B. 95(15): 155424-155431. (2017). (pdf)

125. Rutledge, Steven A., and Amr S. Helmy. Etch-free addressable organic sensor arrays. Sensors and Actuators A: Physical. 253(1): 131-135.(2017). DOI information: 10.1016/j.sna.2016.11.016 (pdf)

124.Firby, Curtis J., PoHan Chang, Amr S. Helmy, and Abdulhakem Y. Elezzabi. Magnetoplasmonic Faraday rotators: Enabling gigahertz active polarization control for integrated plasmonics. ACS Photonics. 3(12): 2344-2352. (2016).(pdf)

123.Li, Yunfeng, Jeffrey Jun-Yan Suen, Elisabeth Prince, Egor M. Larin, Anna Klinkova, Héloïse Thérien-Aubin, Shoujun Zhu et al. Colloidal cholesteric liquid crystal in spherical confinement. Nature communications. 7(1): 12520-12531. (2016). (pdf)

122. Sun, Wei, Chenxi Qian, Le He, Kulbir Kaur Ghuman, Annabelle PY Wong, Jia Jia, Feysal M. Ali et al. Heterogeneous reduction of carbon dioxide by hydride-terminated silicon nanocrystals. Nature communications. 7(1): 12553-12562. (2016). (pdf)

121. Jia, Jia, Paul G. O'Brien, Le He, Qiao Qiao, Teng Fei, Laura M. Reyes, Timothy E. Burrow et al. Visible and near‐infrared photothermal catalyzed hydrogenation of gaseous CO2 over nanostructured Pd@ Nb2O5. Advanced Science. 3(10): 1600189-1600192. (2016). (pdf)

120.Kang, Dongpeng, Ankita Anirban, and Amr S. Helmy. Monolithic semiconductor chips as a source for broadband wavelength-multiplexed polarization entangled photons. Optics express. 24(13): 15160-15170.(2016). (pdf)

119. Lin, Charles, Roberto Grassi, Tony Low, and Amr S. Helmy. Multilayer black phosphorus as a versatile mid-infrared electro-optic material. Nano letters. 16(3): 1683-1689. (2016). (pdf)

118. Marchildon, Ryan P., and Amr S. Helmy. Dispersion-enabled quantum state control in integrated photonics. Optica. 3(3): 243-251. (2016). (pdf)

117. P. Chang, PoHan, Charles Lin, and Amr S. Helmy. Polarization engineering in nanoscale waveguides using lossless media. Journal of Lightwave Technology. 34(3): 952-960. (2016). (pdf)

116. Marchildon, Ryan P., and Amr S. Helmy. Deterministic separation of arbitrary photon pair states in integrated quantum circuits. Laser & Photonics Reviews. 10(2): 245-256. (2016). DOI 10.1002/lpor.201500133.(pdf)

115. Sun, Wei, Chenxi Qian, Xiao Sherri Cui, Liwei Wang, Muan Wei, Gilberto Casillas, Amr S. Helmy, and Geoffrey A. Ozin. Silicon monoxide–a convenient precursor for large scale synthesis of near infrared emitting monodisperse silicon nanocrystals. Nanoscale .8(6): 3678-3684.(2016). (pdf)

114. Querejeta-Fernández, Ana, Bernd Kopera, Karen S. Prado, Anna Klinkova, Myriam Methot, Grégory Chauve, Jean Bouchard, Amr S. Helmy, and Eugenia Kumacheva. Circular dichroism of chiral nematic films of cellulose nanocrystals loaded with plasmonic nanoparticles. ACS nano. 9(10): 10377-10385.(2015).(pdf)

113. Lin, Charles, and Amr S. Helmy. Dynamically reconfigurable nanoscale modulators utilizing coupled hybrid plasmonics. Scientific reports. 5(1): 12313-12323. (2015).(pdf)

112. D. Kang, Amr S. Helmy .Two polarization-entangled sources from the same semiconductor chip. Physical Review A. 92(1): 013821-013828. (2015).(pdf)

111- Arjmand, Arghavan, Payam Abolghasem, Junbo Han, and Amr S. Helmy. Interface modes for monolithic nonlinear photonics. The Journal of the Optical Society of America (JOSA) B. 32(4): 577-587. (2015).(pdf)

110- Arjmand, A., Abolghasem, P., Han, J., & Amr S. Helmy. Interface modes for monolithic nonlinear photonics. The Journal of the Optical Society of America (JOSA) B. 32(4): 577-587.(2015).
(pdf)

109. Rutledge, Steven A., and Amr S. Helmy. Etch-free patterning of poly (3, 4-ethylenedioxythiophene)–poly (styrenesulfonate) for optoelectronics. ACS applied materials & interfaces. 7(7): 3940-3948. (2015). (pdf)

1087.Li, Fangxin, and Amr S. Helmy. Injection locking for stable all-optical pulse generation via gain-induced FWM. Optics Letters. 39(15): 4408-4411. (2014).
(pdf)

107.Swillam, Mohamed A., and Amr S. Helmy. Semi-analytical design methodology for large scale metal–insulator–metal waveguide networks. Journal of Optics. 16(6): 065007-065019. (2014).
(pdf)

106-Kang, Dongpeng, Arthur Pang, Yuxiang Zhao, and Amr S. Helmy. Two-photon quantum state engineering in nonlinear photonic nanowires. The Journal of the Optical Society of America (JOSA) B. 31(7) : 1581-1589. (2014).
(pdf)

105- Ma, Wen, and Amr S. Helmy. Asymmetric long-range hybrid-plasmonic modes in asymmetric nanometer-scale structures. The Journal of the Optical Society of America (JOSA). 31(7): 1723-1729.(2014).
(pdf)

104- Abolghasem, Payam, Dongpeng Kang, Dylan F. Logan, Mandy Lungwitz, and Amr S. Helmy. Widely tunable frequency conversion in monolithic semiconductor waveguides at 2.4 μm. Optics letters. 39(12): 3591-3594.(2014).
(pdf)

103- Helmy, Amr S. Breakthroughs in Photonics 2013: Electrically Pumped Semiconductor Entangled Sources. IEEE Photonics Journal. 6(2): 1-6.(2014).
(pdf)

102- Wong, Herman MK, Charles Lin, Mohamed A. Swillam, and Amr S. Helmy. Broadband Compact Silicon Wire to Silicon Slot Waveguide Orthogonal Bend. Journal of lightwave technology. 32(7): 1399-1405. (2014).
(pdf)

101-Kang, Dongpeng, L. G. Helt, Sergei V. Zhukovsky, Juan P. Torres, J. E. Sipe, and A. S. Helmy. Hyperentangled photon sources in semiconductor waveguides. Physical Review A. 89(2): 023833-023841. (2014).
(pdf)

100-Rutledge, S. A., and A. S. Helmy. Carrier mobility enhancement in poly (3, 4-ethylenedioxythiophene)-poly (styrenesulfonate) having undergone rapid thermal annealing. Journal of Applied Physics. 114(13): 1-6. (2013).
(pdf)

99- Yin, Lois M., Soyoung Lee, Jacky SW Mak, Amr S. Helmy, and Charles M. Deber. Differential binding of L-vs. D-isomers of cationic antimicrobial peptides to the biofilm exopolysaccharide alginate. Protein and peptide letters. 20(8): 843-847. (2013). (pdf)

98- Li, Fangxin, and Amr S. Helmy. Gigahertz to terahertz tunable all-optical single-side-band microwave generation via semiconductor optical amplifier gain engineering. Optics Letters. 38(22): 4542-4545. (2013). (pdf)

97- Logan, Dylan F., M. Giguere, A. Villeneuve, and Amr S. Helmy. Widely tunable mid-infrared generation via frequency conversion in semiconductor waveguides. Optics Letters. 38(21): 4457-4460. (2013).(pdf)

96- Bijlani, Bhavin J., Payam Abolghasem, and Amr S. Helmy. Semiconductor optical parametric generators in isotropic semiconductor diode lasers. Applied Physics Letters. 103(9): 1-6. (2013).(pdf)

95- Zareian, Nima, and Amr S. Helmy. Static and dynamic characteristics of integrated semiconductor optical parametric oscillators. The Journal of the Optical Society of America (JOSA) B. 30(8): 2306-2317. (2013). (pdf)

94- Horn, Rolf T., Piotr Kolenderski, Dongpeng Kang, Payam Abolghasem, Carmelo Scarcella, Adriano Della Frera, Alberto Tosi et al. Inherent polarization entanglement generated from a monolithic semiconductor chip. Scientific reports. 3(1): 2314-2319. (2013). (pdf)

93- Zhukovsky, Sergei V., Lukas G. Helt, Dongpeng Kang, Payam Abolghasem, Amr S. Helmy, and J. E. Sipe. Analytical description of photonic waveguides with multilayer claddings: towards on-chip generation of entangled photons and Bell states. Optics Communications .301(1): 127-140. (2013). (pdf)

92- Vallés, A., M. Hendrych, Jiri Svozilik, R. Machulka, P. Abolghasem, D. Kang, B. J. Bijlani, A. S. Helmy, and J. P. Torres. Generation of polarization-entangled photon pairs in a Bragg reflection waveguide. Optics express. 21(9): 10841-10849. (2013). (pdf)

91-Wong, Herman MK, and Amr S. Helmy. Optically defined plasmonic waveguides in crystalline semiconductors at optical frequencies. The Journal of the Optical Society of America (JOSA) B. 30(4): 1000-1007. (2013).(pdf)

90- Logan, Dylan F., Ali B. Alamin Dow, Dmitri Stepanov, Payam Abolghasem, Nazir P. Kherani, and Amr S. Helmy. Harnessing second-order optical nonlinearities at interfaces in multilayer silicon-oxy-nitride waveguides. Applied Physics Letters. 102(6): 1-5. (2013).(pdf)

89- Li, Fangxin, and Amr S. Helmy. All-optical pulse generation based on gain-induced four-wave mixing in a semiconductor optical amplifier. Optics Letters. 38(8):1241-1243. (2013). (pdf)

88- Mak, Jacky SW, Steve A. Rutledge, Rashid M. Abu-Ghazalah, Fatemeh Eftekhari, Juan Irizar, Natalie CM Tam, Gang Zheng, and Amr S. Helmy. Recent developments in optofluidic-assisted Raman spectroscopy. Progress in Quantum Electronics. 37(1): 1-50. (2013).(Invited Review)(pdf)

87- Farah, Abdiaziz A., Steven A. Rutledge, Antje Schaarschmidt, Roger Lai, Justin P. Freedman, and Amr S. Helmy. Conductivity enhancement of poly (3, 4-ethylenedioxythiophene)-poly (styrenesulfonate) films post-spincasting. Journal of Applied Physics. 112(11): 1-9. (2012). (pdf)

86- Lin, Charles, Mohamed A. Swillam, and Amr S. Helmy. Analytical model for metal–insulator–metal mesh waveguide architectures. The Journal of the Optical Society of America (JOSA) B. 29(11): 3157-3169.(2012). (pdf)

85- Lin, Charles, Herman MK Wong, Benedict Lau, Mohamed A. Swillam, and Amr S. Helmy. Efficient broadband energy transfer via momentum matching at hybrid junctions of guided-waves. Applied Physics letters. 101(12): 1-5. (2012). (pdf)

84- S. V. Zhukovsky, L. G. Helt, P. Abolghasem, D. Kang, J. E. Sipe, and A. S. Helmy, 'Bragg reflection waveguides as integrated sources of entangled photon pairs', J. Opt. Soc. Am. B 29, pp. 2516-2523(2012).(pdf)

83-Bijlani, Bhavin J., and Amr S. Helmy. Design methodology for efficient frequency conversion in Bragg reflection lasers. The Journal of the Optical Society of America (JOSA) B. 29(9): 2484-2492. (2012). (pdf)

82-Abolghasem, Payam, and Amr S. Helmy. Single-sided Bragg reflection waveguides with multilayer core for monolithic semiconductor parametric devices. The Journal of the Optical Society of America (JOSA) B. 29(6): 1367-1375.(2012).(pdf)

81- Wang, Yan, Amr S. Helmy, and George V. Eleftheriades. Enabling two-dimensional optical subdiffraction imaging at an extended working distance: a planar antenna-array approach. The Journal of the Optical Society of America (JOSA) B. 29(5): 1119-1124. (2012). (pdf)

80- Swillam, Mohamed A., and Amr S. Helmy. Feedback effects in plasmonic slot waveguides examined using a closed form model. IEEE Photonics Technology Letters. 24(6): 497-499. (2011). (pdf)

79- Kang, Dongpeng, and Amr S. Helmy. Generation of polarization entangled photons using concurrent type-I and type-0 processes in AlGaAs ridge waveguides. Optics letters. 37(9):1481-1483.(2012).(pdf)

78- Horn, Rolf, Payam Abolghasem, Bhavin J. Bijlani, Dongpeng Kang, A. S. Helmy, and Gregor Weihs. Monolithic source of photon pairs. Physical review letters. 108(15): 153605-153610.(2012).(pdf)

77- Eftekhari, Fatemeh, Anna Lee, Eugenia Kumacheva, and Amr S. Helmy. Examining metal nanoparticle surface chemistry using hollow-core, photonic-crystal, fiber-assisted SERS. Optics letters. 37(4): 680-682. (2012).(pdf)

76-Zhukovsky, Sergei V., Lukas G. Helt, Dongpeng Kang, Payam Abolghasem, Amr S. Helmy, and J. E. Sipe. Generation of maximally-polarization-entangled photons on a chip. Physical Review A. 85(1): 013838-013844. (2012):(pdf)

75-Abolghasem, Payam, Jun-Bo Han, Dongpeng Kang, Bhavin J. Bijlani, and Amr S. Helmy. Monolithic photonics using second-order optical nonlinearities in multilayer-core Bragg reflection waveguides. IEEE Journal of Selected Topics in Quantum Electronics. 18(2): 812-825. (2011).invited.(pdf)

74- Zhukovsky, S. V., D. Kang, P. Abolghasem, L. G. Helt, J. E. Sipe, and A. S. Helmy. Proposal for on-chip generation and control of photon hyperentanglement. Optics letters. 36(18): 3548-3550.(2011).(pdf)

73- Y. Wang, A. S. Helmy, G. V. Eleftheriades. Ultra-wideband optical leaky-wave slot antennas. Optics Express.19(13):12392-12401. (2011).(pdf)

72- Eftekhari, Fatemeh, Juan Irizar, Laila Hulbert, and Amr S. Helmy. A comparative study of Raman enhancement in capillaries. Journal of Applied Physics. 109(11): 1-7. (2011). (pdf)

71- Tong, Cunzhu, Bhavin J. Bijlani, L. J. Zhao, Sanaz Alali, Q. Han, and Amr S. Helmy. Mode selectivity in Bragg reflection waveguide lasers. IEEE Photonics Technology Letters. 23(14). 1025-1027.(2011) .(pdf)

70- Wagner, Sean J., Barry M. Holmes, Usman Younis, Iliya Sigal, Amr S. Helmy, J. Stewart Aitchison, and David C. Hutchings. Difference frequency generation by quasi-phase matching in periodically intermixed semiconductor superlattice waveguides. IEEE Journal of Quantum Electronics. 47(6): 834-840.((2011).pdf)

69- Mak, Jacky SW, Abdiaziz A. Farah, Feifan Chen, and Amr S. Helmy. Photonic crystal fiber for efficient Raman scattering of CdTe quantum dots in aqueous solution. ACS nano. 5(5): 3823-3830 (2011).(pdf)

68- Zareian, Nima, Payam Abolghasem, and Amr S. Helmy. Far field of bragg reflection waveguides: Characteristics and closed-form approximation. Journal of lightwave technology. 29(5):728-735. (2011) .(pdf)

67- Helmy, Amr S., Payam Abolghasem, J. Stewart Aitchison, Bhavin J. Bijlani, Junbo Han, Barry M. Holmes, David C. Hutchings, Usman Younis, and Sean J. Wagner. Recent advances in phase matching of second‐order nonlinearities in monolithic semiconductor waveguides. Laser & Photonics Reviews. 5(2): 272-286. (2011) .(pdf)

66- Svozilík, Jiří, Martin Hendrych, Amr S. Helmy, and Juan P. Torres. Generation of paired photons in a quantum separable state in Bragg reflection waveguides. Optics express. 19(4): 3115-3123.(2011). (pdf)

65-Stanley, David A., Hossein Alizadeh, Amr Helmy, Nazir P. Kherani, Li Qian, and Stefan Zukotynski. SEM-mapped micro-photoluminescence studies of highly luminescent micro-clusters in erbium-doped silicon-rich silicon oxide. Journal of luminescence. 131(1): 72-77. (2011) .(pdf)

64- Abu-Ghazalah, Rashid M., Juan Irizar, Amr S. Helmy, and Robert B. Macgregor Jr. A study of the interactions that stabilize DNA frayed wires. Biophysical chemistry. 147(3): 123-129. (2010).(pdf)

63- Han, J. B., D. P. Kang, P. Abolghasem, B. J. Bijlani, and A. S. Helmy. Pulsed-and continuous-wave difference-frequency generation in AlGaAs Bragg reflection waveguides. JOSA B. 27(12): 2488-2494. (2010).(pdf)

62- Lau, Benedict, Mohamed A. Swillam, and Amr S. Helmy. Hybrid orthogonal junctions: wideband plasmonic slot-silicon waveguide couplers. Optics express. 18(26): 27048-27059. (2010).(pdf)

61- Han, Jun-Bo, Payam Abolghasem, Dongpeng Kang, Bhavin J. Bijlani, and Amr S. Helmy. Difference-frequency generation in AlGaAs Bragg reflection waveguides. Optics letters. 35(14): 2334-2336.(2010). (pdf)

60- Tong, Cunzhu, Bhavin J. Bijlani, Sanaz Alali, and Amr S. Helmy. Characteristics of edge-emitting Bragg reflection waveguide lasers. IEEE journal of quantum electronics. 46(11): 1605-1610.(2010). (pdf)

59- Hutchings, David C., Sean J. Wagner, Barry M. Holmes, Usman Younis, Amr S. Helmy, and J. Stewart Aitchison. Type-II quasi phase matching in periodically intermixed semiconductor superlattice waveguides. Optics letters. 35(8): 1299-1301. (2010). (pdf)

58-Swillam, Mohamed A., and Amr S. Helmy. Analysis and applications of 3D rectangular metallic waveguides. Optics express. 18(19): 19831-19843. (2010). (pdf)

57-Abolghasem, Payam, Junbo Han, Bhavin J. Bijlani, and Amr S. Helmy. Type-0 second order nonlinear interaction in monolithic waveguides of isotropic semiconductors. Optics express. 18(12): 12681-12689.(2010).(pdf)

56- Han, J. B., P. Abolghasem, B. J. Bijlani, A. Arjmand, S. Chaitanya Kumar, A. Esteban-Martin, M. Ebrahim-Zadeh, and A. S. Helmy. Femtosecond second-harmonic generation in AlGaAs Bragg reflection waveguides: theory and experiment. JOSA B. 27(6): 1291-1298.(2010).(pdf)

55- Chen, C., G. Ding, B. S. Ooi, L. F. Lester, A. Helmy, T. L. Koch, and J. C. M. Hwang. Optical injection modulation of quantum-dash semiconductor lasers by intra-cavity stimulated Raman scattering. Optics Express. 18(6): 6211-6219. (2010). (pdf)

54- Merchant, C. A., P. Scrutton, S. García-Blanco, C. Hnatovsky, R. S. Taylor, A. García-Navarro, Gustavo Garcia et al. "High-Resolution Refractive Index and Micro-Raman Spectroscopy of Planar Waveguides in KGd(WO4)2 Formed by Swift Heavy Ion Irradiation." IEEE journal of quantum electronics 45, no. 4 (2009): 373-379. (pdf)

53- Wang, Yan, Alex MH Wong, Loïc Markley, Amr S. Helmy, and George V. Eleftheriades. Plasmonic meta-screen for alleviating the trade-offs in the near-field optics. Optics Express.17(15): 12351-12361. (2009). (pdf)

52-Merchant, C. A., P. Scrutton, S. Garcia-Blanco, C. Hnatovsky, R. S. Taylor, A. Garcia-Navarro, G. Garcia et al. Planar Waveguides-High-Resolution Refractive Index and Micro-Raman Spectroscopy of Planar Waveguides in KGd (W04) 2 Formed by Swift Heavy Ion Irradiation. IEEE Journal of Quantum Electronics. 45(3): 373-379. (2009). (pdf)

51- Bijlani, Bhavin J., and Amr S. Helmy. Bragg reflection waveguide diode lasers. Optics letters. 34(23): 3734-3736.(2009). (pdf)

50- Han, Junbo, Payam Abolghasem, Bhavin J. Bijlani, and Amr S. Helmy. Continuous-wave sum-frequency generation in AlGaAs Bragg reflection waveguides. Optics letters. 34(23): 3656-3658. (2009). (pdf)

49- S. A. Rutledge, A. A. Farah, J. Dinglasan, D. J. Anderson, A. Das, J. Goh, C. Goh, A. S. Helmy. Post-Synthesis Crystallinity Enhancement of Colloidal CdTe Nanoparticles. The Journal of Physical Chemistry C - ACS Publications.113(47): 20208-20213. (2009).(pdf)

48- P. Abolghasem, J. Han, B. Bijlani, A. Arjmand, A. S. Helmy. Highly Efficient Second-Harmonic Generation in Monolithic Matching-Layer Enhanced AlxGa1-xAs Bragg Reflection Waveguides. IEEE Photonics Technology Letters. 21(19): 1462-1464, (2009).(pdf)

47- Y. Wang, A. M. Wong, L. Markley, A. S. Helmy, G. Eleftheriades. Influence of Non-Adiabatic Annealing on Morphology and Molecular Structure of PEDOT-PSS .Films,Optics Express .17(15): 12351-12361 (2009).(pdf)

46- A. Schaarschmidt, A. A. Farah, A. Aby, A. S. Helmy, ‘Influence of Non-Adiabatic Annealing on Morphology and Molecular Structure of PEDOT-PSS Films. The Journal of Physical Chemistry B. 113(28): 9352-9355 (2009).(pdf)

45- P. Abolghasem, M. hendrych, X. Shi, J. P. Torres, A. S. Helmy. Bandwidth Control of Paired Photons Generated in Monolithic Bragg Reflection Waveguides. Optics letters. 34(13): 2000-2002 (2009).(pdf)

44- Benjamin J. Stevens, Kristian M. Groom, David T. D. Childs, Y. Ang, Ryan R. Alexander, A. B. Krysa, John S. Roberts, Amr S. Helmy, Richard A. Hogg, ‘Operating Characteristics of GaAs/InGaP Self Aligned Stripe Lasers.Japanese Journal of Applied Physics .48(4S): 04C120-04C130. (2009).(pdf)

43- P. Abolghasem, J. Han, B. Bijlani, A. S. Helmy. Continuous wave second harmonic generation in Bragg reflection waveguides. Optics Express. 17(11): 9460-9467. (2009).(pdf)

42- S. Wagner, B. M. Holmes, U. Younis, A. S. Helmy, J. S. Aitchison, D. C. Hutchings. Continuous wave second-harmonic generation using domain-disordered quasi-phase matching waveguides. Applied Physics Letters .94(15 ): 151107-151118. (2009).(pdf)

41- Kristian M. Groom, Benjamin J. Stevens, P. Joel Assamoi, John S. Roberts, Maxime Hugues, David T. D. Childs, Ryan R. Alexander, Mark Hopkinson, Amr S. Helmy, Richard A. Hogg. Quantum Well and Dot Self-Aligned Stripe Lasers Utilizing an InGaP Opto-Electronic Confinement Layer. IEEE Journal of Selected Topics in Quantum Electronics. 15(3): 819-827. (2009).(pdf)

40- P. Abolghasem, A. S. Helmy, ‘Matching layers in Bragg reflection waveguides for enhanced
nonlinear interaction. IEEE journal of quantum electronics. 45 (6): 646-653. (2009).(pdf)

39- S. Wagner, B. M. Holmes, U. Younis, A. S. Helmy, J. S. Aitchison, D. C. Hutchings,
‘Controlling third-order nonlinearities by ion-implantation quantum-well intermixing. IEEE Photonics Technology Letters. 21(2): 85-87. (2009). (pdf)

38-Scrutton, P., B. Fung, and A. S. Helmy. Effect of intermixing on bulk and interface Raman modes in GaAs: AlAs superlattice waveguide structures. Journal of Applied Physics. 104(7): 073103-073110. (2008).(pdf)

37- Irizar, Juan, Jordan Dinglasan, Jane Betty Goh, Altaf Khetani, Hanan Anis, Darren Anderson, Cynthia Goh, and A. S. Helmy. Raman spectroscopy of nanoparticles using hollow-core photonic crystal fibers. IEEE Journal of Selected Topics in Quantum Electronics.14(4):1214-1222.(2008).(Invited) (pdf)

36- Aaron J. Zilkie, Joachim Meier, Mo Mojahedi, Philip J. Poole, Pedro Barrios, Daniel Poitras, Thomas J. Rotter, Chi Yang, Andreas Stintz, Kevin J. Malloy, A. S. Helmy, Peter W. E. Smith, J. S. Aitchison.Time-Resolved Linewidth Enhancement Factors in Quantum Dot and Higher-Dimensional Semiconductor Amplifiers Operating at 1.55 μm. Journal of Lightwave Technology. 26(11): 1498-1509. (2008). (Invited) (pdf)

35- S. Wagner, A. Al Mehairy, J. S. Aitchison, A. S. Helmy, 'Modelling and optimization of qausi-phase matching using domain disordering. IEEE journal of quantum electronics. 44(5): 424-429. (2008).(pdf)

34- E. Shaffer, A. S. Helmy, D. Drouin, J. J. Dubowski. Excimer Laser-Induced Crystallization of CdSe Thin Films. Applied Physics A. 93(1): 869-874. (2008).(pdf)

33- B. Bijlani, P. Abolghasem, A. S. Helmy. Second Harmonic Generation in Ridge Bragg Reflection Waveguides. Applied Physics Letters. 92(10): 101124-101135. (2008).(pdf)

32- B. S. Ooi, B. . Djie, A. S. Helmy, J. C. M. Hwang. Broadband emission in InAs/InGaAlAs quantum-dash-in-well laser. Advanced Materials Research. 31(1): 173-175. (2008).(pdf)

31- Eaton, S. M., C. A. Merchant, R. Iyer, A. J. Zilkie, A. S. Helmy, J. S. Aitchison, P. R. Herman et al. Raman gain from waveguides inscribed in KGd (WO4) 2 by high repetition rate femtosecond laser. Applied Physics Letters. 92( 8): 1-8. (2008).(pdf)

30- Nejadmalayeri, Amir H., Philip Scrutton, Jacky Mak, Amr S. Helmy, Peter R. Herman, Jonas Burghoff, Stefan Nolte, Andreas Tünnermann, and Jörg Kaspar. Solid phase formation of silicon nanocrystals by bulk ultrafast laser-matter interaction. Optics letters. 32(24): 3474-3476. (2007). (pdf)

29- A. S. Helmy, B. Bijlani, P. Abolghasem. Phase matching in monolithic Bragg reflection waveguides. Optics letters. 32(16): 2399-2401 (2007). (pdf)

28- S. Wagner, A. S. Helmy, D. C. Hutchings, J. S. Aitchison. Polarization-dependent nonlinear refraction and two-photon absorption in GaAs/AlAs superlattice waveguides below the half-bandgap. Journal of Optical Society of America (JOSA)B. 24(7):1557-1563. (2007).(pdf)

27- P. Scrutton, M. Sorel, D. C. Hutchings, J. S. Aitchison, A. S. Helmy. Characterizing Bandgap Gratings in GaAs:AlAs Superlattice Structures using Interface Phonon Modes. IEEE Photonics Technology Letters .19(9 ): 677-679. (2007). (pdf)

26- Helmy, A. S., A. C. Bryce, D. C. Hutchings, J. S. Aitchison, and J. H. Marsh. Band gap gratings using quantum well intermixing for quasi-phase-matching. Journal of applied physics. 100(12): 1-7. (2006).(pdf)

25- West, Brian R., and Amr S. Helmy. Dispersion tailoring of the quarter-wave Bragg reflection waveguide. Optics Express. 14(9): 4073-4086. (2006).(pdf)

24- West, Brian R., and A. S. Helmy. Analysis and design equations for phase matching using Bragg reflector waveguides. IEEE Journal of Selected Topics in Quantum Electronics. 12(3): 431-442.(2006).(pdf)

23- Brian R. West, A. S. Helmy. Properties of quarter wave Bragg reflection waveguides: Theory. OSA Journal of Optical Society of America B. 23(6): 1207-1220. (2006).(pdf)

22- A. S. Helmy, 'Phase matching using Bragg reflection waveguides for monolithic non-linear applications. OSA Optics Express. 14(3): 1243-1252. (2006).(pdf)

21- A. S. Helmy, P. Martin, J. P. Landesman, A. C. Bryce, J. S. Aitchison, J. H. Marsh. Spatially resolved Raman spectroscopy on GaAs-AlAs superlattice waveguides used for qausi-phase matching. Journal of Crystal Growth. vol. 288(1): 53-56. (2006).(pdf)

20- T. C. Kleckner, A. S. Helmy, K. Zeaiter, D. C. HD. C. Hutchings J. S. Aitchison. Dispersion and modulation of the linear optical properties of GaAs/AlAs waveguides using quantum well intermixing. IEEE journal of quantum electronics. 42(3): 280-286. (2006).(pdf)

19- A. S. Helmy, D. C. Hutchings, T. C. Kleckner, J. H. Marsh, A. C. Bryce, J. M. Arnold, C. R. Stanley, and J. S. Aitchison, C. T. A. Brown, K. Moutzouris and M. Ebrahimzadeh. Quasi-phase matching in GaAs-AlAs superlattice waveguides via bandgap tuning using quantum well intermixing. Optics letters. 25(1): 1370-1372. (2000).(pdf)

18- Dumais, Patrick, Alain Villeneuve, Amr Saher-Helmy, J. Stewart Aitchison, Lars Friedrich, Russell A. Fuerst, and George I. Stegeman. Toward soliton emission in asymmetric GaAs/AlGaAs multiple-quantum-well waveguide structures below the half-bandgap. Optics Letters .25(17): 1282-1284. (2000).(pdf)

17- Teng, J. H., S. J. Chua, G. Li, A. Saher Helmy, and J. H. Marsh. Control of the band-gap shift in quantum-well intermixing using a germanium interlayer. Applied Physics Letters. 76(12): 1582-1584. (2000).(pdf)

16- Teng, J. H., S. J. Chua, Y. H. Huang, G. Li, Z. H. Zhang, A. Saher Helmy, and J. H. Marsh. Multi-wavelength lasers fabricated by an Al layer controlled quantum well intermixing technology. Journal of Applied Physics. 88(6): 3458-3462.(2000). (pdf)

15- Ong, T. K., O. Gunawan, B. S. Ooi, Y. L. Lam, Y. C. Chan, Y. Zhou, A. Saher Helmy, and J. H. Marsh. High-spatial-resolution quantum-well intermixing process in GaInAs/GaInAsP laser structure using pulsed-photoabsorption-induced disordering. Journal of Applied Physics. 87(6): 2775-2779.(2000). (pdf)

14- Bhattacharyya, D., A. Saher Helmy, A. C. Bryce, E. A. Avrutin, and J. H. Marsh. Selective control of self-organized In 0.5 Ga 0.5 As/GaAs quantum dot properties: quantum dot intermixing. Journal of Applied Physics. 88(8): 4619-4622. (2000). (pdf)

13-Marsh, J. H., D. Bhattacharyya, A. Saher Helmy, E. A. Avrutin, and A. C. Bryce. "Engineering quantum-dot lasers. Physica E: Low-dimensional Systems and Nanostructures. 8(2): 154-163. (2000). (pdf)

12- Saher Helmy, A., A. C. Bryce, C. N. Ironside, J. S. Aitchison, and J. H. Marsh. Raman spectroscopy for characterizing compositional intermixing in GaAs/AlGaAs heterostructures. Applied physics letters. 74(26): 3978-3980. (1999).(pdf)

11- Helmy, A. Saher, S. K. Murad, A. C. Bryce, J. S. Aitchison, J. H. Marsh, S. E. Hicks, and C. D. W. Wilkinson. Control of silica cap properties by oxygen plasma treatment for single-cap selective impurity free vacancy disordering. Applied physics letters. 74(5): 732-734. (1999). (pdf)

10- Li, G., S. J. Chua, S. J. Xu, X. C. Wang, A. Saher Helmy, Mao-Long Ke, and J. H. Marsh. Silica capping for Al 0.3 Ga 0.7 As/GaAs and In 0.2 Ga 0.8 As/GaAs quantum well intermixing. Applied physics letters. 73(23): 3393-3395.(1998). (pdf)

9-Helmy, A. Saher, J. Stewart Aitchison, and John H. Marsh. Quantitative model for the kinetics of compositional intermixing in GaAs-AlGaAs quantum-confined heterostructures. IEEE journal of selected topics in quantum electronics. 4(4): 653-660. (1998). (pdf)

8- Helmy, A. Saher, N. P. Johnson, M. L. Ke, A. Catrina Bryce, J. Stewart Aitchison, John H. Marsh, Ivair Gontijo, Gerald S. Buller, J. Davidson, and P. Dawson. A study of impurity-free vacancy disordering in GaAs-AlGaAs for improved modeling. IEEE Journal of selected topics in quantum electronics. 4(4): 661-668.(1998). (pdf)

7- Dumais, Patrick, Alain Villeneuve, Amr Saher-Helmy, and J. Stewart Aitchison. Soliton-emitting AlGaAs waveguide. Optics Express. 2(12): 455-461. (1998).(pdf)

6- Ke, Maolong, A. Saher Helmy, A. C. Bryce, J. H. Marsh, J. Davidson, and P. Dawson. The electronic structure and optical properties of intermixed GaAs/AlGaAs double quantum wells. Journal of applied physics. 84(5): 2855-2857.(1998). (pdf)

5- Ooi, B. S., Y. S. Tang, A. Saher Helmy, A. C. Bryce, J. H. Marsh, M. Paquette, and J. Beauvais. Optical characterization of GaAs/AlGaAs quantum well wires fabricated using arsenic implantation induced intermixing. Journal of applied physics. 83(8): 4526-4530.(1998).(pdf)

4- Saher Helmy, A., J. S. Aitchison, and J. H. Marsh. The kinetics of intermixing of GaAs/AlGaAs quantum confined heterostructures. Applied physics letters. 71(20): 2998-3000.(1997).(pdf)

3- Ooi, Boon Siew, K. McIlvaney, Michael W. Street, A. Saher Helmy, Stephen G. Ayling, A. Catrina Bryce, John H. Marsh, and J. S. Roberts. Selective quantum-well intermixing in GaAs-AlGaAs structures using impurity-free vacancy diffusion. IEEE journal of quantum electronics. 33(10): 1784-1793.(1997). (pdf)

2- Camacho, F., Eugene A. Avrutin, P. Cusumano, A. Saher Helmy, A. C. Bryce, and John H. Marsh. Improvements in mode-locked semiconductor diode lasers using monolithically integrated passive waveguides made by quantum-well intermixing. IEEE Photonics Technology Letters. 9(9): 1208-1210.(1997).(pdf)

1- Cusumano, P., B. S. Ooi, A. Saher Helmy, S. G. Ayling, A. C. Bryce, J. H. Marsh, B. Voegele, and M. J. Rose. Suppression of quantum well intermixing in GaAs/AlGaAs laser structures using phosphorus-doped SiO 2 encapsulant layer. Journal of applied physics. 81(5): 2445-2447.(1997). (pdf)