Sang-Jun Choi

Most-cited papers

Microdisk tunable resonant filters and switches
K. Djordjev, S. I. Choi, Sang-Jun Choi, R. D. Dapkus
2002IEEE Photonics Technology Letters178 citations
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Efficiency enhancement in a light-emitting diode with a two-dimensional surface grating photonic crystal
H. Ichikawa, T. Baba, Min-Hsiung Shih, W. Kim +27 more
2004139 citations Open access
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Microdisk lasers vertically coupled to output waveguides
S. Choi, K. Djordjov, Sang-Jun Choi, J. Coleman +1 more
2002IEEE Photonics Technology Letters116 citations
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Vertically coupled InP microdisk switching devices with electroabsorptive active regions
K. Djordjev, S. Choi, Sang-Jun Choi, P. Dapkus
2002IEEE Photonics Technology Letters62 citations
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Microring resonators vertically coupled to buried heterostructure bus waveguides
S. I. Choi, K. Djordjev, Sang-Jun Choi, P. D. Dapkus +4 more
2003IEEE Photonics Technology Letters57 citations
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High-Q vertically coupled InP microdisk resonators
K. Djordjev, S. Choi, Sang-Jun Choi, P. Dapkus
2002IEEE Photonics Technology Letters55 citations
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CH4-based dry etching of high Q InP microdisks
S. Choi, K. Djordjev, Sang-Jun Choi, P. Dapkus
200248 citations
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Active semiconductor microdisk devices
K. Djordjev, Sang-Jun Choi, S. I. Choi, P. Dapkus
200247 citations
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Operation of photonic crystal membrane lasers above room temperature
Po-Tsung Lee, Jiang-Rong Cao, Sang-Jun Choi, Zhi-Jian Wei +2 more
200245 citations
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Sapphire-bonded photonic Crystal microcavity lasers and their far-field radiation patterns
J.-R. Cao, W. Kuang, Zhi-Jian Wei, Sang-Jun Choi +4 more
2005IEEE Photonics Technology Letters39 citations
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Tunable narrow linewidth all-buried heterostructure ring resonator filters using vernier effects
S. Choi, Zhen Peng, Qi Yang, Sang-Jun Choi +1 more
2005IEEE Photonics Technology Letters36 citations
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Nanofabrication of photonic crystal membrane lasers
Jiang-Rong Cao, P.-T. Lee, Sang-Jun Choi, R. Shafiiha +3 more
200233 citations
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Eight-channel microdisk CW laser arrays vertically coupled to common output bus waveguides
S. Choi, Zhen Peng, Qi Yang, Sang-Jun Choi +1 more
2004IEEE Photonics Technology Letters32 citations
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LASERS, OPTICS, AND OPTOELECTRONICS 3467 Gain trimming of the resonant characteristics in vertically coupled InP microdisk switches
K. Djordjev, S. I. Choi, Sang-Jun Choi, P. Dapkus +32 more
200231 citations
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Laterally coupled buried heterostructure high-Q ring resonators
S. Choi, K. Djordjev, Zhen Peng, Qi Yang +2 more
2004IEEE Photonics Technology Letters30 citations
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Carrier-induced refractive index changes in InP-based circular microresonators for low-voltage high-speed modulation
T. Sadagopan, S. Choi, Sang-Jun Choi, K. Djordjev +1 more
2005IEEE Photonics Technology Letters29 citations
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Experimental characterization of the optical loss of sapphire-bonded photonic crystal laser cavities
Min-Hsiung Shih, W. Kuang, Tian Yang, M. Bagheri +5 more
2006IEEE Photonics Technology Letters28 citations
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Optical Modulators based on depletion width translation in semiconductor microdisk resonators
T. Sadagopan, S. I. Choi, Sang-Jun Choi, P. Dapkus +1 more
2005IEEE Photonics Technology Letters22 citations
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An eight-channel demultiplexing switch array using vertically coupled active semiconductor microdisk resonators
S. Choi, Zhen Peng, Qi Yang, Sang-Jun Choi +1 more
2004IEEE Photonics Technology Letters22 citations
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Room-temperature operation of VCSEL-pumped photonic crystal lasers
P.-T. Lee, Jiang-Rong Cao, Sang-Jun Choi, Zhi-Jian Wei +2 more
2002IEEE Photonics Technology Letters22 citations
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Threshold dependence on the spectral alignment between the quantum-well gain peak and the cavity resonance in InGaAsP photonic crystal lasers
Jiang-Rong Cao, W. Kuang, Sang-Jun Choi, Po-Tsung Lee +2 more
200317 citations
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Study of the effects of the geometry on the performance of vertically coupled InP microdisk resonators
K. Djordjev, S. I. Choi, Sang-Jun Choi, P. Dapkus
200215 citations
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Microscopic Quantum Transport Processes of Out‐of‐Plane Charge Flow in 2D Semiconductors Analyzed by a Fowler–Nordheim Tunneling Probe
Dong-Hoon Shin, Duk Hyun Lee, Sang-Jun Choi, Seonyeong Kim +6 more
2023Advanced Electronic Materials12 citations Open access
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Experimental characterization of the reflectance of 60° waveguide bends in photonic crystal waveguides
Min-Hsiung Shih, W. Kim, W. Kuang, Jiang-Rong Cao +3 more
200512 citations
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Classification of modes in suspended-membrane, 19-missing-hole photonic-crystal microcavities
W. Kuang, Jiang-Rong Cao, Tian Yang, Sang-Jun Choi +3 more
200512 citations
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Photonic crystal devices
J. O'Brien, W. Kuang, Jiang-Rong Cao, Min-Hsiung Shih +6 more
200412 citations
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Tunable microdisk resonators vertically coupled to bus waveguides using epitaxial regrowth and wafer bonding techniques
S. Choi, Zhen Peng, Qi Yang, Sang-Jun Choi +1 more
200411 citations
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Two-segment spectrally inhomogeneous traveling wave semiconductor optical amplifiers applied to spectral equalization
K. Djordjev, Sang-Jun Choi, W. Choi, S. Choi +2 more
2002IEEE Photonics Technology Letters9 citations
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High-speed, low-voltage modulation in circular WGM microresonators
T. Sadagopan, S. Choi, Sang-Jun Choi, P. D. Dapkus +1 more
2004Digest of the LEOS Summer Topical Meetings Biophotonics/Optical Interconnects and VLSI Photonics/WBM Microcavities, 2004.8 citations
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Selective area epitaxy by metalorganic chemical vapor deposition– a tool for photonic and novel nanostructure integration
P. Dapkus, Chun-Yung Chi, Sang-Jun Choi, Hyung-Joon Chu +9 more
20207 citations Open access
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Microcavity Laser Linewidth Close to Threshold
M. Bagheri, Min-Hsiung Shih, Sang-Jun Choi, J. O'Brien +1 more
2009IEEE Journal of Quantum Electronics7 citations
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Gain compression and thermal analysis of a sapphire-bonded photonic crystal microcavity laser under various duty cycles
Ling Lu, M. Bagheri, Adam Mock, Jiangrong Cao +3 more
20092009 Conference on Lasers and Electro-Optics and 2009 Conference on Quantum electronics and Laser Science Conference6 citations
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Lithographic fine-tuning of vertical cavity surface emitting laser-pumped two-dimensional photonic crystal lasers.
J.-R. Cao, Po-Tsung Lee, Sang-Jun Choi, J. O'Brien +1 more
2002Journal of Nanoscience and Nanotechnology6 citations
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Photonic crystal lasers
J. O'Brien, P.-T. Lee, Jiang-Rong Cao, W. Kuang +5 more
2001LEOS 2000. 2000 IEEE Annual Meeting Conference Proceedings. 13th Annual Meeting. IEEE Lasers and Electro-Optics Society 2000 Annual Meeting (Cat. No.00CH37080)5 citations
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Gain Compression and Thermal Analysis of a Sapphire-Bonded Photonic Crystal Microcavity Laser
Ling Lu, M. Bagheri, Adam Mock, Jiangrong Cao +3 more
2009IEEE Photonics Technology Letters4 citations
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Active semiconductor microdisk switching devices utilizing gain and electroabsorption effects
K. Djordjev, S. Choi, Sang-Jun Choi, P. D. Dapkus
2002Optical Fiber Communication Conference and Exhibit4 citations
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Modified suspended membrane photonic crystal D/sub 3/ laser cavity with improved sidemode suppression ratio
W. Kuang, Jiang-Rong Cao, Sang-Jun Choi, John D. O'Brien +1 more
2005IEEE Photonics Technology Letters3 citations
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Classification of modes in multi-moded photonic crystal microcavities
W. Kuang, Jiang-Rong Cao, Tian Yang, Sang-Jun Choi +2 more
2004Conference on Lasers and Electro-Optics3 citations
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8-Channel microdisk CW laser arrays vertically coupled to common output bus waveguides
S. Choi, Zhen Peng, Qi Yang, Sang-Jun Choi +1 more
20043 citations
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High-Q buried heterostructure microring resonators
S. Choi, Qi Yang, Zhen Peng, Sang-Jun Choi +1 more
2004Conference on Lasers and Electro-Optics3 citations
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Sapphire bonded photonic crystal microcavity lasers
Jiang-Rong Cao, Zhi-Jian Wei, Sang-Jun Choi, W. Kuang +3 more
20033 citations
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High-Q vertically-coupled microresonators built by wafer-bonding technique
K. Djordjev, S. Choi, Sang-Jun Choi, P. D. Dapkus
2001LEOS 2001. 14th Annual Meeting of the IEEE Lasers and Electro-Optics Society (Cat. No.01CH37242)3 citations
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Room temperature operation of VCSEL-pumped photonic crystal lasers
Po-Tsung Lee, Jiang-Rong Cao, Sang-Jun Choi, Zhi-Jian Wei +2 more
2001LEOS 2001. 14th Annual Meeting of the IEEE Lasers and Electro-Optics Society (Cat. No.01CH37242)3 citations
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Far-fields of photonic crystal microcavity lasers
Jiang-Rong Cao, W. Kuang, Zhi-Jian Wei, Sang-Jun Choi +2 more
2004Conference on Lasers and Electro-Optics2 citations
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8-channel tunable MUX/DEMUX using vertically coupled active microdisk resonators
S. I. Choi, Zhen Peng, Qi Yang, Sang-Jun Choi +1 more
2003The 16th Annual Meeting of the IEEE Lasers and Electro-Optics Society, 2003. LEOS 2003.2 citations
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Microresonator devices for DWDM systems
P. Daniel Dapkus, Sang-Jun Choi, S. Choi, K. Djordjev +2 more
2001OFC 2001. Optical Fiber Communication Conference and Exhibit. Technical Digest Postconference Edition (IEEE Cat. 01CH37171)2 citations
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All-buried active microring resonators using vernier effects for free spectral range expansion and optical channel configuration
S. Choi, Zhen Peng, Qi Yang, Sang-Jun Choi +1 more
2004Digest of the LEOS Summer Topical Meetings Biophotonics/Optical Interconnects and VLSI Photonics/WBM Microcavities, 2004.1 citations
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Laterally Coupled Buried Heterostructure High
S. Choi, K. Djordjev, Zhen Peng, Sang-Jun Choi +1 more
20041 citations
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Novel Active Swithching Components Based on Semiconductor Microdisk Resonators
K. Djordjev, S.-J. Choi, Sang-Jun Choi, P. D. Dapkus
20022002 28TH European Conference on Optical Communication1 citations
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Investigation of the optical losses in photonic crystal laser cavities by varying the number of lattice periods
Po-Tsung Lee, Jiang-Rong Cao, Sang-Jun Choi, Tian Yang +2 more
2002IEEE 18th International Semiconductor Laser Conference1 citations
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