Seminar: "Novel femtosecond lasers for driving attosecond generation" by Dr. Zhiyi Wei

Friday, November 21, 2014 11:00 AM to 12:00 PM
CREOL Room 103

Zhiyi Wei

Institute of Physics, Chinese Academy of Sciences

Abstract

Development of femtosecond lasers operating at new wavelengths has attracted great attention for increasing photon energy and flux of attosecond pulses. We have generated isolated 160 as pulses with carrier envelope phase controlled sub-5 fs laser at 800nm. In this talk I will introduce our recent works on laser frequency extension. By using 4H-SiC as the nonlinear crystal in femtosecond OPA experiment, 17 mJ pulses centered at 3.7mm were obtained. Choosing BBSAG as the nonlinear crystal in sum frequency generation, high conversion efficiency at 200 nm was achieved. These light sources can be used as attosecond driving lasers.

Biography

Dr. Zhiyi Wei was born in Gausu Province, China in 1963. He obtained Ph.D Degree from Xian Institute of Optics and Fine Mechanics, Chinese Academy of Sciences in 1991. After two years postdoctoral fellow at Ultrafast Laser Spectroscopy Lab at Sun Yat-Sen University in China, he worked at the Rutherford Appleton Lab in UK, the Chinese University of Hong Kong, the Hong Kong University of Science and Technology, University of Groningen in the Netherland as a visiting scholar from May 1993 to March 1997. He joined the Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences in 1997. From April 2000 to Sept 2002, he was also employed by the National Institute of Advanced Industrial Science and Technology (AIST) in Japan as a NEDO fellowship researcher. His research interests focus on the generation, phase control, amplification and compression of femtosecond laser pulses. Presently he is the group leader of Ultrafast Laser Group at the Institute of Physics, Chinese Academy of Sciences. He is also the international advisory member of the IoP journal for Measurement Science and Technology, member of C2 (Symbol and Constants) sub-committee of International Union of Pure and Applied Physics (IUPAP).

For additional information:

Dr. Zenghu Chang
407-823-4442
Zenghu.Chang@ucf.edu