174. Ebrahim-Zadeh, Majid, Amr S. Helmy, Giuseppe Leo, and Peter G. Schunemann. Mid-infrared coherent sources and applications: introduction. JOSA B. 40(1): 1-5. (2023).

173. 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): 2200251-2200259. (2023).

172. 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).

171. 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).

170 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(1): 1-17. (2023).

169. 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).

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

167. 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).

166. 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).

165. Mujin Cai, Zhiyi Wu, Zhao Li, Lu Wang, Wei Sun, Athanasios A. Tountas, Chaoran Li, Shenghua Wang, Kai Feng, Ao-Bo Xu, Sanli Tang, Alexandra Tavasoli, Meiwen Peng, Wenxuan Liu, Amr S. Helmy, Le He, Geoffrey A. Ozin & Xiaohong Zhang. Greenhouse-inspired supra-photothermal CO2 catalysis. Nature Energy. 6(1): 807–814. (2022).

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

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

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

161. 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).

160. Emily E. Storey; Duxuan Wu; 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.

159. 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).

158. C. J. McKinstrie, T. J. Stirling, and A. S. Helmy. Laser linewidths: tutorial. JOSA BC.38(12): 3837-3848. (2021).

157. 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).

156. C. J. McKinstrie, T. J. Stirling, and A. S. Helmy. Stochastic systems: tutorial. JOSA B. 38(12): 3818-3836. (2021).

155. 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).

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

153. CCC Lin, P. Chang and Amr. S. Helmy. Supermode Hybridization: A Material-Independent Route toward Record Schottky Detection Sensitivity Using

152. 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).

151. H. Liu, and A.S. Helmy. Joint measurement of time–frequency entanglement via sum frequency generation, Nature NPJ Quantum Information. 6(1): 66-72. (2020).

150. B Janjua, Meng Iu, Zhizhong Yan; Paul Charles; Eric Chen; Amr S. HelmAy. Passively Mode-Locked Bragg Lasers With 64 GHz Sub-300 fs Pulses at 785 nm. IEEE Photonics Technology Letters.32(18): 1135 - 1138. (2020).

149. Lu Wang Yuchan Dong, Tingjiang Yan, Zhixin Hu, Abdinoor A Jelle, Débora Motta Meira, Paul N. Duchesne, Joel Yi Yang Loh, Chenyue Qiu, Emily E. Storey, Yangfan Xu, Wei Sun, Mireille Ghoussoub, Nazir P. Kherani, Amr S. Helmy, Geoffrey A. Ozin. Black Indium Oxide: Photothermal CO2 Hydrogenation Catalyst, nature communications. 11(1): 2432-2440. (2020).

148. Meng Lon Iu, 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 Chi 2. Applied Physics Letter. Photonics 5(1): 011301-011307. (2020).

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

146. H. Liu, and A.S. Helmy. Enhancing classical target detection performance using nonclassical Light, IEEE Aerospace and Electronic Systems Magazine. 35(4): 36-46. (2020).

145. H. Liu, B. Balaji and A.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).

144. Y. He, D. Giovannini, H. Liu, and A.S. Helmy.“Non-classical Semiconductor Photon Sources Enhancing the Performance of Classical Target Detection Systems. IEEE journal lightwave technology. 38(16): 4540 - 4547. (2020).

143. H. Liu, D. Giovannini, H. Y. He, D. England, B. J. Sussman, B. Balaji and AS Helmy, Enhancing LIDAR performance metrics using continuous-wave photon-pair sources. OSA Optica. 6(10): 1349-1355. (2019).

142. H. Wong, R. Prasankumar, R. Haglund and A. S. Helmy, Broadband, Integrated, Micron-Scale, All-Optical Si3N4/VO2 Modulators pJ Switching Energy. ACS Photonics.6(11): 2734-2740. (2019).

141. P. Rofouie , E. Galati, L. Sun, A. S. Helmy, E. Kumacheva, Hybrid Cholesteric Films with Tailored Polarization Rotation. Advanced Functional Materials. 29(43): 1905552-1905559. (2019).

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

139. 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).

138. H. M. K. Wong, M. K. Dezfouli, S. Axelrod, Stephen Hughes and Amr S. Helmy, Nanoscale plasmonic slot waveguides for enhanced Raman spectroscopy. Physical Review B. 98(8): 085124-085145. (2018).

137. A. Brodutch, R. Marchildon, Amr S. Helmy, Dynamically Reconfigurable Sources for Arbitrary Gaussian States in Integrated Photonic Circuits. Optics Express. 26(13)176: 35-17648. (2018). (pdf)

136. Z. M. Léger, A. Brodutch, Amr S. Helmy, Entanglement enhancement in multimode integrated circuits. Physical Review A. 97(6): 062303-062309, (2018). (pdf)

135. Curtis J. Firby, PoHan Chang, Amr S. Helmy, and Abdulhakem Y. Elezzabi, Versatile broadband polarization-independent optical circulators for nanophotonic integrated circuits. OSA JOSA B. 35(7): 1504-1513. (2018). (pdf)

134. N. Zareian, D. Kang, Amr S. Helmy, Tuning Parametric processes in semiconductor Diode Lasers. OSA JOSA B. 35(3). 552-557. (2018).(pdf)

133. Herman M. K. Wong, and Amr S. Helmy, Performance Enhancement of Nano-Scale VO2 Modulators using Hybrid Plasmonics. Journal of Lightwave Technology. 36(3).797-808. (2018).(pdf)

132. P. Chang, C. Lin and Amr. S. Helmy. Efficient Integrated Graphene Photonics in the Visible and Near‐IR. Laser and Photonics Reviews.11(5): 1700003-1700010. (2017). (pdf)

131. Y. Su, P. Chen, C. Lin and Amr. S. Helmy. Highly sensitive wavelength-scale amorphous hybrid plasmonic detectors. Optica. 4(10): 1259-1262. (2017). (pdf)

130. Herman M. K. Wong, 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): 205112-20519. (2017). (pdf)

129. Wei Sun, Grace Zhong, Christian Kübel, Abdinoor A. Jelle, 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)

128. Simon Axelrod, Mohsen Kamandar Dezfouli, Herman M. K. Wong, Amr S. Helmy, and Stephen Hughes. Hyperbolic metamaterial nanoresonators make poor single-photon sources. Physical Review B. 95(15):155424-155436. (2017).(pdf)

127. Steven A. Rutledge, and Amr S. Helmy. Etch-free addressable organic sensor array. Sensors and Actuators: A. 253(2): 31-135. (2017). DOI information: 10.1016/j.sna.2016.11.016 (pdf)

126. Curtis J. Firby, 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)

125. Yunfeng Li, Jeffrey Jun-Yan Suen, Elisabeth Prince, Egor M. Larin, Anna Klinkova, Héloïse Thérien-Aubin, Shoujun Zhu, Bai Yang, Amr S. Helmy, Oleg D. Lavrentovich and Eugenia Kumacheva. Colloidal cholesteric liquid crystal in spherical confinement. Nature Communications. 7(1). 12520-12531. (2016). (pdf)

124. Wei Sun, Chenxi Qian, Le He, Kulbir Kaur Ghuman, Annabelle P. Y. Wong, Jia Jia, Abdinoor A. Jelle, Paul G. O’Brien, Laura M. Reyes, Thomas E. Wood, Amr S. Helmy, Charles A. Mims, Chandra Veer Singh and Geoffrey A. Ozin. Heterogeneous reduction of carbon dioxide by hydride-terminated silicon nanocrystals. Nature Communications. 7(1): 12553-12562. (2016). (pdf)

123. Jia Jia, Paul G. O'Brien, Le He, Qiao Qiao, Teng Fei, Laura M. Reyes, Timothy E. Burrow, Yuchan Dong, Kristine Liao, Maria Varela, Stephen J. Pennycook, Mohamad Hmadeh, Amr S. Helmy, Nazir P. Kherani, Doug D. Perovic, Geoffrey A. Ozin. Visible and Near-Infrared Photothermal Catalyzed Hydrogenation of Gaseous CO2 over Nanostructured PdNb2O5. Advanced Science. 3(10):1600189-1600192. (2016).(pdf)

122. Dongpeng Kang, A. Anriban, A. S. Helmy. Monolithic semiconductor chips as a source for broadband wavelength-multiplexed polarization entangled photons. Optics express, 24(13):15160-15170. (2016). (pdf)

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

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

119. P. Chen, C Lin and Amr. S. Helmy. Polarization Engineering in Nanoscale Waveguides Using Lossless Media. IEEE J. Lght. Technolo. 34(3): 952-960. (2016). (pdf)

118. R. Marchildon 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)

117. Wei Sun, 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)

116. Ana Querejeta-Fernández, 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)

115. C. Lin, Amr S. Helmy. Dynamically reconfigurable nanoscale modulators utilizing coupled hybrid plasmonics. Scientific Reports. 5(1): 12313-12323. (2015).(pdf)

114. D. Kang, Amr S. Helmy. Two polarization-entangled sources from the same semiconductor chip. Physical Review A. 92(1): 013821-01389. (2015).
(pdf)

113. A. Arjmand, P. Abolghasem. and A. S. Helmy. Interface modes for monolithic nonlinear optics. JOSA B. 32(4): 577-587. (2015).
(pdf)

111. Steven A. Rutledge, and Amr S. Helmy, Etch-free patterning of PDOT:PSS for optoelectronics. ACS applied materials & interfaces, 7(7): 3490-3948. (2015).
(pdf)

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

109- Dongpeng Kang, A. Pang, Y. Zhao, and A. S. Helmy Two-photon quantum state engineering in nonlinear photonic nanowires. JOSA B. 31(7): 1581-1589. (2014).
(pdf)

108- W. Ma and Amr S. Helmy. Asymmetric long-range hybrid-plasmonic modes in asymmetric nanometer-scale structures. JOSA B. 31(7): 1723-1729. (2014).
(pdf)

107- P. Abolghasem. D. Kang, D. F Logan, M. Lungwitz, and A. S. Helmy. Widely tunable frequency conversion in monolithic semiconductor waveguides at 2.4 μm. Optics letters. 39(12): 3591-3594. (2014).
(pdf)

106- M. Swillam and Amr S. Helmy .Generalized Semi-analytical Design Methodology for Plasmonic Slot Waveguide Networks. Journal of Optics. 16(6): 065007-065019. (2014).
(pdf)

105- Amr S. Helmy. Breakthroughs in Photonics 2013: Electrically Pumped Semiconductor Entangled Sources. IEEE Photonics Journal. 6(2): 700206-700215. (2014).
(pdf)

104- H. M. K. Wong, C. Lin, M. A. Swillam, A. S. Helmy. Broadband Compact Silicon Wire to Silicon Slot Waveguide Orthogonal Bend. Journal of lightwave technology. 32(7): 1399-1405. (2014).
(pdf)

103- Dongpeng Kang, 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)

102- 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).
(pdf)

101- Steven A. Rutledge, Justin P. Freedman and Amr S. Helmy. Carrier mobility enhancement in poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) having undergone rapid thermal annealing . Journal of Applied Physics .114(13): 133708-133714. (2013).
(pdf)

100- F. Li, and A. S. Helmy. Gigahertz to terahertz tunable all-optical single-side-band microwave generation via semiconductor optical amplifier gain engineering. Optics Letters. 38(22): 4542-4548. (2013).(pdf)

99- D. F. Logan, M. Giguere, A. Villeneuve, and A. S. Helmy. Widely tunable mid-infrared generation via frequency
conversion in semiconductor waveguides. Optics Letters. 38(21): 4457-4461. (2013).(pdf)

98- B. J. Bijlani, P. Abolghasem, and A. S. Helmy. Semiconductor optical parametric generators in isotropic semiconductor diode lasers. Applied Physics Letters. 103(9): 091103-091109. (2013).(pdf)

97- N. Zareian and A. S. Helmy. Static and dynamic characteristics of integrated semiconductor optical parametric oscillators. JOSA B. 30(8): 2306-2318. (2013).(pdf)

96- R. T. Horn, P. Kolenderski, D. Kang, P Abolghasem, C. Scarcella, A. D. Frera, A. Tosi, L. G. Helt, S. V. Zhukovsky, J. E. Sipe, G. Weihs, A. S. Helmy and T. Jennewein .Inherent polarization entanglement generated from a monolithic semiconductor chip. Scientific Reports 3(1): 2314-2319. (2013).(pdf)

95- L. M. Yin, S. Lee, J. S. W. Mak, A. S. Helmy, C. M. Deber. Differential Binding of L- vs. D-isomers of Cationic Antimicrobial Peptides to the Biofilm Exopolysaccharide Alginate. Protein and Peptide Letters. 20, 843-847. (2013).(pdf)

94- S. V. Zhukovsky, L. G. Helt, D. Kang, P. Abolghasem, A. S. Helmy, 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)

93- A. Valles, M. Hendrych, J. 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)

92- H. M. K. Wong and A. S. Helmy .Optically Defined Plasmonic Waveguides in Crystalline Semiconductors at Optical Frequencies. JOSA B. 30(4): 1000-1007. (2013).(pdf)

91- D. F Logan, A. B. Al Amin Dow, D. Stepanov, P. Abolghasem, N. P. Kherani, and A. S. Helmy. Harnessing second-order optical nonlinearities at interfaces in multilayer silicon-oxy-nitride waveguides. Applied Physics Letters .102(6): 061106-061111. (2013).(pdf)

90- Fangxin Li 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)

89- J. S. W. Mak, S. Rutledge, R. M. Abu-Ghazalah, F. Eftekhari, J. Irizar, N. C. M. Tam, G. Zheng, A. S. Helmy. Advancements in Raman spectroscopy in hollow core photonics crystal fibers. Progress in Quantum Electronics.. 37(1): 1-50. (2013).(Invited Review)(pdf)

88- A. A. Farah, Steven A. Rutledge, Antje Schaarschmidt, Roger Lai, Justin P. Freedman and Amr S. Helmy. Conductivity Enhancement of PEDOT:PSS Films Post-Spincasting. Journal of Applied Physics. 112(11): 113709-113718. (2012).(pdf)

87- C. Lin, A. S. Helmy. Analytical Model for Metal-Insulator-Metal Mesh Waveguide Architectures. JOSA B.29(11): 3157-3169. (2012).(pdf)

86- R. M. Abu-Ghazalah, S. Rutledge, Lewis W. Y. Lau, D. N. Dubins, R. B. Macgregor , Jr., Amr S. Helmy. Concentration-Dependent Structural Transitions of Human Telomeric DNA Sequences. ACS Biochemistry. 51 (37): 7357–7366. (2012).(pdf)

85- C. Lin, H. Wong, B. Lau, M. Swillam, A. S. Helmy. Efficient broadband energy transfer via momentum matching at hybrid junctions of guided-waves. Applied Physics letters. 101(12): 123115-123120. (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. JOSA B . 29(9): 2516-2523. (2012).(pdf)

83- B. J. Bijlani and A. S. Helmy. Design methodology for efficient frequency conversion in Bragg reflection lasers. JOSA B. 29(9): 2484-2492. (2012).(pdf)

82- P. Abolghasem, A. S. Helmy. Single-sided Bragg reflection waveguides with multilayer core for monolithic semiconductor parametric devices. JOSA B. 29(6):1367-1375. (2012).(pdf)

81- Y. Wang, A. S. Helmy and G. V. Eleftheriades .Enabling two-dimensional optical subdiffraction imaging at an extended working distance: a planar antenna-array approach. JOSA B . 29(5) :1119-1124. (2012).(pdf)

80- M. A. Swillam, A. S. Helmy. Feedback Effects in Plasmonic Slot Waveguides Examined Using a Closed Form Model. IEEE Photonics Technology Letters . 24(6): 497-499. (2012).(pdf)

79- D. Kang, A. 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- R. Horn, P. Abolghasem, B. J. Bijlani, D. Kang, A. S. Helmy, and G. Weihs. Monolithic Source of Photon Pairs. Physical review letters. 108(15): 153605-153610. (2012).(pdf)

77- P. Abolghasem, J. B. Han, D. Kang, B. J. Bijlani, A. 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. (2012). invited.(pdf)

76- F. Eftekhari, A. Lee, E. 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)

75- S. V. Zhukovsky, L. G. Helt, D. Kang, P. Abolghasem, A. S. Helmy, and J. E. Sipe. Generation of maximally-polarization-entangled photons on a chip. Physical review A, 85(1): 013838-013844. (2012).(pdf)

74- S. V. Zhukovsky, D. Kang, P. Abolghasem, L. G. Helt, J. E. Sipe, 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- F. Eftekhari, J. Irizar, L. Hulbert, A. S. Helmy. A comparative study of Raman enhancement in capillaries. Journal of Applied Physics. 109(11):113104-113111. (2011).(pdf)

71- C. Z. Tong, B. J. Bijlani, L. J. Zhao, S. Alali, Q. Han, A. S. Helmy. Mode Selectivity in Bragg Reflection Waveguide Lasers. IEEE Photonics Technology Letters. 23(14) : 1025-1027. (2011).(pdf)

70- S. J. Wagner, B. M. Holmes, U. Younis, I. Sigal, A. S. Helmy, J. S. Aitchison, D. 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- J. S. W. Mak, A. A. Farah, F. Chen, A. 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- N. Zareian, P. Abloghasem, A. S. Helmy. Far Field of Bragg Reflection Waveguides: Characteristics and Closed-Form Approximation. Journal of lightwave technology. 29(5): 728-735. (2011).(pdf)

67- A. S. Helmy, P. Abolghasem, J. S. Aitchison, B. J. Bijlani, J. Han, B. M. Holmes, D. C. Hutchings, U. Younis, and S. J. Wagner .Recent Advances in Phase-Matching Second Order Nonlinearities in Monolithic Semiconductor Waveguides. Laser & Photonics Reviews. 5(2): 272-286. (2011).(pdf)

66- Jiri Svozilk, M. Hendrych, A. 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- D. A. Stanley, H. Alizadeh, A. S. Helmy, N. P. Kherani, L. Qian, and S. 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- B. Lau, M. Swillam and A. S. Helmy. Hybrid orthogonal junctions: wideband plasmonic slot-silicon waveguide couplers. Optics express. 18(26): 27048-27059. (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(10): 2488-2494. (2010). (pdf)

62- C. Tong, B. J. Bijlani, S. Alali and A. S. Helmy. Characteristics of Edge Emitting Bragg Reflection Waveguide Lasers. IEEE journal of quantum electronics. 46(11): 1605-1610. (2010). (pdf)

61- D. C. Hutchings, S. Wagner, B. M. Holmes, U. Younis, A. S. Helmy, J. S. Aitchison. Type-II quasi phase matching in periodically intermixed semiconductor superlattice waveguides. Optics letters. 35(8):1299-301. (2010). (pdf)

60- M. Swillam and A. S. Helmy. Analysis and applications of 3D rectangular metallic waveguides. Optics express .18(19): 19531-19543. (2010). (pdf)

59- J. B. Han, P. Abolghasem, D. P. Kang, B. J. Bijlani, A. S. Helmy. Difference-frequency generation in AlGaAs Bragg reflection waveguides. Optics letters. 35(14): 2334-2336. (2010). (pdf)

58- P. Abolghasem, J. B. Han, B. J. Bijlani, A. S. Helmy. Type-0 second order nonlinear interaction in monolithic waveguides of isotropic semiconductors. Optics express. 18(12): 12861-12689. (2010).(pdf)

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

56- R. M. Abu-Ghazalah, J. Irizar, A. S. Helmy, R. B. Macgregor Jr. A study of the interactions that stabilize DNA frayed wires. Biophysical Chemistry.147(3): 123–129. (2010).(pdf)

55- C. Chen, G. Ding, B. S. Ooi, L. F. Lester, A. S. Helmy, T. L. Koch, 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- S. Rutledge, A. A. Farah, J. Dinglasan, D. Anderson, A. Das, J. Goh, C. Goh, A. S. Helmy. Post-synthesis crystallinity tailoring of water-soluble polymer encapsulated CdTe nanoparticles using rapid thermal annealing. MRS Online Proceedings Library (OPL).1207(1), 1207-1210. (2010). (pdf)

53- B. Bijlani, A. S. Helmy. Bragg Reflection Waveguide Lasers. Optics letters. 34(23): 3734-3736. (2009).(pdf)

52- J. Han, P. Abolghasem, B. Bijlani, A. S. Helmy. Sum Frequency generation in Semiconductor Waveguides. Optics letters. 34(23): 3656-3658. (2009).(pdf)

51- 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. 113(47): 20208-20213. (2009).(pdf)

50- 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)

49- 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)

48- 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)

47- 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)

46- 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): 04C120-04C124. (2009).(pdf)

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

44- 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): 151107-151111. (2009).(pdf)

43- 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)

42- C. A. Merchant, P. Scrutton, S. Garcia-Blanco, C. Hnatovsky, R.S. Taylor, A. García-Navarro, G. García, F. Agulló-López, J. Olivares, A. S. Helmy, J.S. Aitchison. Waveguide fabrication in KGd(WO4)2 formed by swift heavy ion irradiation. IEEE Journal of Quantum Electronics. 45(1): 373-379. (2009).(pdf)

41- 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)

40- 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)

39- P. Scrutton, B. Fung, A. S. Helmy. Interface Raman modes in intact and intermixed GaAs:AlAs superlattice structures. Journal of Applied Physics 104(7): 073103-073110. (2008).(pdf)

37- J. Irizar, J. Dinglasan, J.B. Goh1, A. Khetani, H. Anis, D. Anderson, C. Goh, A. S. Helmy. Ultra sensitive Raman Spectroscopy of Nanoparticles using 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(2). 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): 101124-101128. (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- S. Eaton, C. A. Merchant, A. S. Helmy, P. R. Herman, J. S. Aitchison . Low-loss waveguides with preserved Raman characteristics inscribed in KGd(WO4)2 by high repetition rate femtosecond fiber laser. Applied Physics Letters. 92(8): 081105-081109. (2008).(pdf)

30- A. H. Nejadmalayeri, P. Scrutton, J. Mak, A. S. Helmy, and P. R. Herman, J. Burghoff, S. Nolte, and A. Tunnermann, J. Kaspar. Fourth phenomenon in bulk ultrafast laser matter interaction: formation of silicon nanocrystals in vicinity of waveguide tracks. Optics letters. 32(24): 3474-3476. (2008).(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 B. 24(27): 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): 1-9. (2006).(pdf)

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

24- Brian R. West, A. S. Helmy, 'Exact Phase matching using Bragg Reflection Waveguides. IEEE J. of Select. Topics in Quantum Electronics. 12(3): 431-446. (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(18):1370-1372. (2000).(pdf)

18- P. Dumais, A. Villeneuve, A. S. Helmy, J. S. Aitchison, L. Friedrich, R. A. Fuerst, G. 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- J. H. Teng, S. J. Chua, G. Li, A. S. 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- J. H. Teng, S. J. Chua, Y. H. Huang, G. Li, Z. H. Zhang, A. S. Helmy, 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- T. K. Ong, B. S. Ooi, Y. L. Lam, Y. C. Chan and Y. Zhou, A. S. Helmy. 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- D. Bhattacharayya, A. S. Helmy, A. C. Bryce, E. A. Avrutin, J.H. Marsh. Selective control of self-organized In0.5Ga0.5As/GaAs quantum dot properties: quantum dot intermixing. Journal of Applied Physics. 88(8): 4619-4622. (2000).(pdf)

13- J.H. Marsh, D. Bhattacharyya,  A. S. Helmy, E. A. Avrutin, A.C. Bryce, 'Engineering Quantum Dot Lasers, Physica E: Low-dimensional Systems and Nanostructures. 8(2): 154-163. (2000).(pdf)

12- A. S. Helmy, A. C. Bryce, C. N. Ironside, J. S. Aitchison, J.H. Marsh. Raman Spectroscopy for Characterising Compositional Intermixing in GaAs/AlGaAs Heterostructures. Applied physics letters. 74(16): 3978-3980. (1999).(pdf)

11- A. S. Helmy, S. K. Murad, A. C. Bryce, J. S. Aitchison, J.H. Marsh, S. K. Hicks, 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- G. Li, S. J. Chua, S. J. Xu, X. C. Wang, A. S. Helmy, M. L. Ke, J.H. Marsh. Silica capping for Al0.3Ga0.7As/GaAs and In0.2Ga0.8As/GaAs quantum well intermixing. Applied physics letters 73 (23): 3393-3395. (1998).(pdf)

9- A. S. Helmy, J. S. Aitchison, and J. 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): 653-670. (1998).(pdf)

8- A. S. Helmy, N. P. Johnson, M. L. Ke, A. C. Bryce, J. S. Aitchison, J.H. Marsh, I. Gontijo, G. S. Buller, J. Davidson, P. Dawson. A study of impurity-free vacancy disordering in GaAs/ AlGaAs for improved modelling. IEEE Journal of selected topics in quantum electronics 4(4): 661-668. (1998). (pdf)

7- P. Dumais, A. Villeneuve, A. S. Helmy, J. S. Aitchison. Soliton-emitting AlGaAs waveguide. Optics Express. 2(12): 455-461. (1998).(pdf)

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

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

3- B. S. Ooi, K. McIlvaney, A. S. Helmy, S. G. Ayling, A. C. Bryce, J. H. Marsh. Selective quantum well intermixing in GaAs/AlGaAs structures using impurity free vacancy disordering. IEEE Journal of Quantum Electronics. 33(10): 1784-1793, (1997).(pdf)

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

1- P. Cusumano, B. S. Ooi, A. S. Helmy, S. G. Ayling, A. C. Bryce, J. H. Marsh, B. Voegele, M. J. Rose. Suppression of quantum well intermixing in GaAs/AlGaAs laser structures using phosphorous-doped SiO2 encapsulant layer. Journal of Applied Physics. 81(5): 2445-2447. (1997).(pdf)