Di Liang

ECE
ESB, Rm. 2221 G
UCSB, Santa Barbara, CA 93106
Tel: (805) 893-4883
Fax: (805) 893-7990
Email: dliang[at]ece[dot]ucsb[dot]edu

Di received his B.S. degree in Optical Engineering from the Zhejiang University, Hangzhou, China in 2002, and his M.S. and Ph.D. degrees in Electrical Engineering from the University of Notre Dame, Notre Dame, IN in 2004 and 2006, respectively. His MS project focused on single-mode SOI waveguide simulations, fabrication and characterizations, and then he switched the research focus to III-V compound semiconductor optoelectronic devices, especially GaAs-based high-index-contrast, low-loss ridge waveguides, and high-efficiency laser design, fabrication optimization and characterizations. He has authored and coauthored over 20 journal and conference papers, and is a member of IEEE, OSA and SPIE. His current research interests include low-temperature wafer bonding, semiconductor lasers and compound semiconductor manufacturing, etc.

Journal Publications

"High temperature thermoelectric characterization of III-V semiconductor thin films by oxide bonding," J.-H. Bahk, G. Zeng, J. M. O. Zide, H. Lu, R. Singh, D. Liang, A. Ramu, Z. Bian, A. Shakouri, A. C. Gossard, J. E. Bowers, Journal of Applied Physics, submitted, 2009

"Photonic integration: Si or InP substrates?," D. Liang, J. E. Bowers, Electronics Letters (invited insight letter), Vol. 42, No. 12, pp. 578-581, 2009

"High-Quality 150 mm InP-to-Silicon Epitaxial Transfer for Silicon Photonic Integrated Circuits," D. Liang, J. E. Bowers, D. C. Oakley, A. Napoleone, D. C. Chapman, C.-L. Chen, P. W. Juodawlkis, and O. Raday, Electrochemical and Solid-State Letters, 12(4), H101-H104, 2009

"Hybrid silicon evanescent approach to optical interconnects," D. Liang, A. W. Fang, H.-W. Chen, M. N. Sysak, B. R. Koch, E. Lively, O. Raday, Y.-H. Kuo, R. Jones, J. E. Bowers, Applied Physics A: Materials Science & Processing, invited, 2009

"Native-oxide-confined high-index-contrast lambda=1.15 µm strain-compensated InGaAs single quantum well ridge waveguide lasers," D. Liang, D. C. Hall, Y.-T. Huang, G. Tsvid, and L. J. Mawst, Applied Physics Letters, Vol, 93, Issue 16, pp. 161108, 2008

"A Distributed Bragg Reflector Silicon Evanescent Laser," A. W. Fang, B. R. Koch, R. Jones, E. Lively, D. Liang, Y.-H. Kuo, J.E. Bowers, IEEE Photonics Technology Letters, Vol 20 - 20, p1667-1669, 2008

"Highly efficient vertical outgassing channels for low-temperature InP-to-silicon direct wafer bonding on the silicon-on-insulator substrate," D. Liang, J. E. Bowers, Journal of Vacuum Science and Technology B, Vol. 26, No. 4, pp. 1560-1568, 2008

" Low-Temperature, Strong SiO2-SiO2 Covalent Wafer Bonding for III¨CV Compound Semiconductors-to-Silicon Photonic Integrated Circuits," D. Liang, A. W. Fang, H. Park, T. E. Reynolds, K. Warner, D. C. Oakley and J. E. Bowers, Journal of Electronic Materials, Vol. 37, No.8, 2008

"A distributed feedback silicon evanescent laser," A. W. Fang, E. Lively, Y-H. Kuo, D. Liang, J. E. Bowers, OPTICS EXPRESS, Vol. 16, No. 7, pp. 4413-4419, 2008

"Photonic Integration on Hybrid Silicon Evanescent Device Platform," H. Park, A. W. Fang, D. Liang, Y.-H. Kuo, H.-H. Chang, B. R. Koch, H.-W. Chen, M. N. Sysak, R. Jones, and J. E. Bowers, Advances in Optical Technologies, Article ID 682978,, 2008

"Deep-Etched Native-Oxide-Confined High-Index-Contrast AlGaAs Heterostructure Lasers With 1.3 ¦Ìm Dilute-Nitride Quantum Wells," D. Liang, J. Wang, D. C. Hall, J. Y. Huang, J. Y. Yeh and L. J. Mawst, IEEE Journal of Selected Topics in Quantum Electronics, Vol. 13, No. 5, pp. 1324-1311, 2007

"Reduction of Etched AlGaAs Sidewall Roughness by Oxygen-Enhanced Wet Thermal Oxidation," D. Liang and D. C. Hall, Applied Physics Letters, Vol. 91, pp. 061110-061112, 2007

"Hybrid Si evanescent devices," A. W. Fang, H. Park, Y.-H. Kuo, R. Jones, O. Cohen, D. Liang, O. Raday, M. N. Sysak, M. J. Paniccia, and J. E. Bowers, Materials Today, VOLUME 10, NUMBER 7-8, 2007

"Single-Facet Folded-Cavity Diode Laser With Ultrasmall Bend Radius High-Index-Contrast Oxidized AlGaAs Ridge Waveguide," D. Liang, J. Wang and D. C. Hall, IEEE Photonics Technology Letters, Vol. 19, pp. 598-600, 2007

"High-Efficiency Native-Oxide-Passivated High-Index-Contrast Ridge Waveguide Lasers," D. Liang, J. Wang and D. C. Hall, Electronics Letters, Vol.42, No. 6, pp. 349-350, 2006

"Tunable and Frequency-Stabilized CO2 Waveguide Lasers," Y. Ma and D. Liang, Optical Engineering, SPIE, Vol. 41, No. 12, pp. 3319 - 3323, 2002

"Study on a Bessel-Gaussian Beam Laser," Y. Ma, Z. He and D. Liang, Optics & Laser Technology, Elsevier, B.V., Vol. 34, pp. 579 - 584, 2002

Conference Publications

"150 mm InP-to-Silicon Direct Wafer Bonding for Silicon Photonic Integrated Circuits," D. Liang, A. W. Fang, D. C. Oakley, A. Napoleone, D. C. Chapman, C.-L. Chen, P. W. Juodawlkis O. Raday, J. E. Bowers, 214th Electrochemical Society Meeting (PRiME 2008), Paper 2220, Honolulu, Hawaii, USA, 2008

"Wafer Bonded Silicon Photonics," D. Liang, A. W. Fang, H.-W. Chen, J. E. Bowers, IEEE Avionics, Fiber- Optics and Photonics Technology, Paper WA1 (invited), San Diego, CA, USA, 2008

"A Distributed Bragg Reflector Silicon Evanescent Laser," A. W. Fang, B. R. Koch, R. Jones, E. Lively, D. Liang, Y.-H. Kuo, and J. E. Bowers, IEEE GFP 2008, WD2, Sorrento Italy, 2008

"A Hybrid Silicon Sampled Grating DBR Tunable Laser," M. N. Sysak, J. O. Anthes, D. Liang, J. E. Bowers, O. Raday, R. Jones, IEEE GFP 2008, WD1 (Invited), Sorrento Italy, 2008

"Low Temperature, Large Wafer-Scale InP-to-Si Direct Bonding with Vertical Outgassing Channels for Silicon Photonic Integrated Circuits," D. Liang, A. W. Fang, J. E. Bowers, Electronic Materials Conference, Paper II2, Santa Barbara, CA, USA, 2008

"Low Temperature, Large Wafer-Scale InP-to-Si Direct Bonding with Vertical Outgassing Channels for Silicon Photonic Integrated Circuits," D. Liang, A. W. Fang, J. E. Bowers, the 50th Electronic Materials Conference, Paper II2, 2008

"Distributed Feedback Silicon Evanescent Laser," A. W. Fang, E. Lively, Y.-H. Kuo, D. Liang, J. E. Bowers, OFC/NFOEC, postdeadline session PDP15, 2008

"Highly Efficient Vertical Outgassing Channels for Robust, Void-Free, Low-Temperature Direct Wafer Bonding," 616. D. Liang, E. A. Lucero, J.E. Bowers, Physics and Chemistry of Semiconductor Interfaces, paper We1150, 2008

"Low Temperature Wafer Bonding for III-V Si Photonic Integrated Circuits," D. Liang, H. Park, A. W. Fang and J. E. Bowers, Electronic Materials Conference, paper L3, 2007

"High Efficiency Oxide-Confined High-Index-Contrast Broad-Area Lasers with Reduced Threshold Current Density and Improved Near-Field Profile," D. Liang and D. C. Hall, Device Research Conference, paper III-25, 2007

"Nonselective Oxidation of GaAs-Based III-V Compound Semi-conductor Heterostructures for In-Plane Lasers," D. Liang, J. Wang and D. C. Hall, Photonics West, SPIE, paper 6485-25 (invited), 2007

"High-Efficiency Oxide-Confined Ridge Waveguide Laser with Nearly Symmetric Output Beam," D. Liang, J. Kulick and D. C. Hall, LEOS Annual Meeting, paper ThZ4, 2006

"High-Index-Contrast Oxide-Confined GaAsP/InGaAsN Multi-Quantum-Well Ridge Waveguide Lasers," D. Liang, D. C. Hall, J. Y. Huang, J. Y. Yeh and L. J. Mawst, International Semiconductor Laser Conference, paper ThC3, 2006

"High-Performance Small-Radius Half-Racetrack-Ring-Resonator InAlGaAs Quantum Well Laser Diodes Fabricated via Non-Selective Wet Oxidation," J. Wang, D. Liang and D. C. Hall, International Semiconductor Laser Conference, paper P5, 2006

"Low-Loss High-Index-Contrast AlGaAs/GaAs S-Bend Waveguide Lasers," J. Wang, D. Liang and D. C. Hall, Great Lakes Photonics Symposium, SPIE, paper GL106-20, 2006

"A Novel Self-Aligned Process to Fabricate High-Index-Contrast Ridge Waveguide Lasers," D. Liang, J. Wang and D. C. Hall, Great Lakes Photonics Symposium, SPIE, paper GL106-15, 2006

"High-Index-Contrast Ridge Waveguide Lasers Fabricated via Oxygen-Enhanced Wet Thermal Oxidation," D. Liang, J. Wang, D. C. Hall, G. M. Peake and Q. Hartmann, Photonics West, SPIE, paper 6133-40, 2006

"Oxide-Confined High Index Contrast Ridge Waveguide Curved Resonator Laser Diodes," D. Liang, J. Wang and D. C. Hall, LEOS Annual Meeting, paper ThZ3, 2005

"Oxidation Smoothing of Sidewall Roughness in AlGaAs Heterostructure Waveguides," D. Liang, D. C. Hall and G. Peake, LEOS Annual Meeting, paper TuY4, 2005

"Coupling Device with Output Power Continuously Tunable 'Laser-infrared Optical Fiber' for Surgery," Y. Ma and D. Liang, International Symposium on Instrumentation Science and Technology, Vol. 2, pp. 570 - 572, 2002

"An Optical Characteristic Testing System for the Infrared Fiber," Y. Ma and D. Liang, International Symposium on Instrumentation Science and Technology, Vol. 2, pp. 565 - 569, 2002

"Stimulation of Violet Lasers to Traditional Chinese Medicine Photosensitizer for Diagnosis of Early-stage Gastric Cancer," Y. Ma, D. Liang and L. Li, International Symposium on Instrumentation Science and Technology, Vol. 2, pp. 442 - 447, 2002