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
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
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