Events

"The Quantum Limit on Coherence of the Semiconductor Lasers: Theory – Experiment"

Amnon Yariv, Professor, Department of Applied Physics and Electrical Engineering, California Institute of Technology

January 23rd (Friday), 4:00pm
Engineering Science Building (ESB), Rm 2001


The talk will describe the theory, design, fabrication, and the experimental results of an effort that led to a new type of hybrid Si/III-V semiconductor (SCL) laser with a linewidth below 1 KHz. This result is nearly 3 orders of magnitude better (smaller linewidth) than that of commercial SC lasers.

Other key parameters relevant to coherence such as the phase/amplitude coupling constant ╬▒and the relaxation resonance frequency are reduced by more than an order of magnitude. The fabrication employed is CMOS compatible making the new laser integrable with electronic circuits and potentially enabling a new generation of communication, time-keeping, and sensing applications.

About Amnon Yariv:

photo of amnon yariv Amnon Yariv is the Martin and Eileen Summerfield Professor of Applied Physics and Electrical Engineering at Caltech. He obtained the B.S. (1954), M.S. (1956) and Ph.D. (1958) in electrical engineering from the University of California at Berkeley. He went to the Bell Telephone Laboratories, Murray Hill, New Jersey in 1959, joining the early stages of the laser effort. He came to the California Institute of Technology in 1964. On the technical side, he is responsible with W. H.Louisell and A.E. Siegman for the quantum mechanical formulation of parametric (nonlinear) optics. With students and various colleagues, he proposed and demonstrated the fields of: Optoelectronic Integrated Circuits (IOECS), the Distributed Feedback Semiconductor laser, and coupled-resonator optical waveguide. His recent research is on 3D lidar imaging with swept frequency semiconductor lasers and limits of coherence of semiconductor lasers.

Dr. Yariv is a member of the American Physical Society, Phi Beta Kappa, the American Academy of Arts and Sciences, the National Academy of Engineering, the National Academy of Sciences, a Fellow of the Institute of Electrical and Electronics Engineers and the Optical Society of America. He was the recipient of the 1980 Quantum Electronics Award of the IEEE, the 1985 University of Pennsylvania Pender Award, the 1986 Optical Society of America Ives Medal, the 1992 Harvey Prize, the 1998 OSA Beller Medal, the National Medal of Science 2010, and the IEEE Photonics Award 2011. Dr. Yariv was a founder and chairman-of-the-board of ORTEL Corporation (acquired by Lucent Technologies in 1998), and is a founder and a board member of a number of startup companies in the optical communications field.

Hosted by: IEEE Photonics Society - student chapter