Constance Chang-Hasnain | EECS at UC Berkeley

Research Areas

Micro/Nano Electro Mechanical Systems (MEMS)
Physical Electronics (PHY)
Nano-Optoelectronic devices
Microsystems and materials

Research Centers

Biography

Connie Chang-Hasnain is John R. Whinnery Chair Professor Emerita of Electrical Engineering and Computer Sciences, University of California, Berkeley. She was Associate Dean for Strategic Alliances, College of Engineering, 2014-2019 and Chair of Nanoscale Science and Engineering Graduate Group, 2006-2017. She received her Ph.D. from the same university in 1987. Prior to joining the Berkeley faculty, Dr. Chang-Hasnain was a member of the technical staff at Bellcore (1987–1992), and Assistant and Associate Professor of Electrical Engineering at Stanford University (1992–1996).

Professor Chang-Hasnain’s research interests range from semiconductor optoelectronic devices to materials and physics. She has been honored with the Welker Award (2022) for For pioneering contributions to VCSEL photonics, nano-photonics and high contrast metastructures for optical communications and optical sensing, the Okawa Prize (2018) for pioneering and outstanding research of VCSEL photonics through the development of their novel functions for optical communications and optical sensing. In addition, she has been awarded with the Quantum Device Award (2014), IEEE David Sarnoff Award (2011), the OSA Nick Holonyak Jr. Award (2007), the IEEE LEOS William Streifer Award for Scientific Achievement (2003), the Microoptics Award from Japan Society of Applied Physics (2009), a Humboldt Research Award (2009), and a Guggenheim Fellowship (2009).

She is an elected member of National Academy of Engineering, a member of the US Advisory Committee to the International Commission on Optics, National Academy of Sciences. She was the Editor-in-Chief Journal of Lightwave Technology 2007-2012 and is Associate Editor of the OSA Optica, since 2013.

She was the President of Optica (formerly know as OSA) in 2021 and Past President in 2022.

Education

1987, Ph.D., Electrical Engineering, U.C. Berkeley
1984, M.S., Electrical Engineering, U.C. Berkeley
1982, B.S., Electrical Engineering, U.C. Davis

Selected Publications

K. W. Ng, W. S. Ko, F. Lu, and C. Chang-Hasnain, "Metastable Growth of Pure Wurtzite InGaAs Microstructures," Nano Letters, vol. 14, no. 8, pp. 4757–4762, July 2014.
R. Chen, K. W. Ng, W. S. Ko, D. Parekh, F. Lu, T. D. Tran, K. Li, and C. Chang-Hasnain, "Nanophotonic integrated circuits from nanoresonators grown on silicon," Nature communications, vol. 5, no. 4325, July 2014.
W. Yang, J. Ferrara, K. Grutter, A. Yeh, C. Chase, Y. Yue, A. E. Willner, M. C. Wu, and C. Chang-Hasnain, "Low loss hollow-core waveguide on a silicon substrate," Nanophotonics, vol. 1, no. 1, pp. 23--29, Jan. 2012.
Y. Zhou, M. C. Y. Huang, and C. Chang-Hasnain, "Tunable VCSEL with ultra-thin high contrast grating for high-speed tuning," Optics Express, vol. 16, no. 18, pp. 14221-14226, Sep. 2008.
M. Moewe, L. C. Chuang, V. G. Dubrovskii, and C. Chang-Hasnain, "Growth mechanisms and crystallographic structure of InP nanowires on lattice-mismatched substrates," J. Applied Physics, vol. 104, no. 4, pp. 044313-1-4, Aug. 2008.
M. C. Y. Huang, K. B. Cheng, Y. Zhou, A. Pisano, and C. Chang-Hasnain, "Monolithic integrated piezoelectric MEMS-tunable VCSEL," IEEE J. Selected Topics in Quantum Electronics, vol. 13, no. 2, pp. 374-380, March 2007.
E. Wong, X. Zhao, C. Chang-Hasnain, W. Hofmann, and M. C. Amann, "Rayleigh backscattering and extinction ratio study of optically injection-locked 1.55 mu m VCSELs," Electronics Letters, vol. 43, no. 3, pp. 182-183, Feb. 2007.
R. S. Tucker, P. Ku, and C. Chang-Hasnain, "Slow-light optical buffers: capabilities and fundamental limitations," J. Lightwave Technology, vol. 23, no. 12, pp. 4046-4066, Dec. 2005.
C. F. R. Mateus, M. C. Y. Huang, Y. Deng, A. R. Neureuther, and C. Chang-Hasnain, "Ultrabroadband mirror using low-index cladded subwavelength grating," IEEE Photonics Technology Letters, vol. 16, no. 2, pp. 518-520, Feb. 2004.
B. T. Cunningham, P. Y. Li, C. Chang-Hasnain, and C. Mateus, "Detection of biochemical interactions on a biosensor using tunable filters and tunable lasers," U.S. Patent Application. May 2003.
C. Chang-Hasnain, "Tunable VCSEL," IEEE J. Selected Topics in Quantum Electronics, vol. 6, no. 6, pp. 978-987, Nov. 2000.
W. Yuen, G. S. Li, R. F. Nabiev, J. Boucart, P. Kner, R. J. Stone, D. Zhang, M. Beaudoin, T. Zheng, C. He, K. Yu, M. Jansen, D. P. Worland, and C. Chang-Hasnain, "High-performance 1.6-mu m single-epitaxy top-emitting VCSEL," Electronics Letters, vol. 36, no. 13, pp. 1121-1123, June 2000.
C. J. Chang-Hasnain, E. C. Vail, and M. S. Wu, "High performance micromechanical tunable vertical cavity surface emitting laser," U.S. Patent 5,771,253. June 1998.
E. C. Vail, M. S. Wu, G. S. Li, L. Eng, and C. Chang-Hasnain, "GaAs micromachined widely tunable Fabry-Perot filters," Electronics Letters, vol. 31, no. 3, pp. 228-229, Feb. 1995.
C. Chang-Hasnain, J. P. Harbison, G. Hasnain, A. C. Von Lehmen, L. T. Florez, and N. G. Stoffel, "Dynamic, polarization, and transverse mode characteristics of vertical cavity surface emitting lasers," IEEE J. Quantum Electronics, vol. 27, no. 6, pp. 1402-1409, June 1991.
C. Chang-Hasnain, J. Berger, D. R. Scifres, W. Streifer, J. R. Whinnery, and A. Dienes, "High power with high efficiency in a narrow single-lobed beam from a diode laser array in an external cavity," Applied Physics Letters, vol. 50, no. 21, pp. 1465-1467, May 1987.
C. Chang-Hasnain, D. F. Welch, D. R. Scifres, J. R. Whinnery, A. Dienes, and R. D. Burnham, "Diffraction-limited emission from a diode laser array in an apertured graded-index lens external cavity," Applied Physics Letters, vol. 49, no. 11, pp. 614-616, Sep. 1986.

Awards, Memberships and Fellowships

Welker Award, 2022
ECE Distinguished Alumni Award, 2019
National Academy of Inventors (NAI) Fellow, 2018
Okawa Prize, 2018
National Academy of Engineering (NAE) Member, 2018
UNESCO Medal for the Development of Nanosciences and Nanotechnologies, 2015
Quantum Device Award, 2014
Pan Wen-Yuan Foundation Outstanding Research Award, 2013
IEEE David Sarnoff Award, 2011
Max Planck Research Award, 2009
Guggenheim Fellow, 2009
Microoptics Award, 2009
Humboldt Research Award, 2009
National Security Science and Engineering Faculty (NSSEF) Fellow, 2008
Nick Holonyak Jr. Award, 2007
NAE Gilbreth Lectureship, 2005
IEEE Photonics Society William Streifer Scientific Achievement Award, 2003
James H. McGraw Award, 1999
Institute of Electrical & Electronics Engineers (IEEE) Fellow, 1997
Optica Fellows (formerly Optical Society of America (OSA) Fellow), 1997
NSF Presidential Faculty Fellow (PFF), 1994
Sloan Research Fellow, 1994
IEEE Photonics Society Distinguished Lecturer, 1994
Packard Fellow in Science and Engineering, 1992
IEEE-HKN Outstanding Young Professional Award, 1991