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Dr. Zenghu Chang: "Attosecond light switch"
Friday, August 29, 2008 11:00 AM to 12:00 PM Room A214
Abstract:
The field of ultrafast optics is experiencing an attosecond revolution. Attosecond optical pulses have recently become important tools for investigating electron dynamics in atoms. The duration of such extreme ultraviolet pulses has already dropped below 100 as thanks to the newly developed mono-cycle pump lasers. The goal of our research is to generate isolated attosecond pulses with a scalable photon flux while maintaining some degree of ease in the pump laser operation. Ideally, one would generate isolated attosecond pulses with high energy, multi-cycle pump pulses (>20 fs) like those directly from a Ti:Sapphire based amplifier. In my talk, I will present evidence of a switching technique called Double Optical Gating (DOG) that may make this dream come true.
Biography:
Dr. Zenghu Chang is a professor of physics at Kansas State University. He received his doctorate in Optics at the Xi'an Institute of Optics and Precision Mechanics at the Chinese Academy of Sciences in 1988. He served as an associate professor at this intuition for the next three years before joining the Rutherford Appleton Laboratory in the UK and returning after two years in the UK to the Chinese Academy of Sciences as a professor. Dr Chang moved to the US in 1995 with a position at Washington State University as an adjunct professor and visiting scientist. In 1996 he moved to the University of Michigan as a research fellow and then as an Assistant research scientist. In 2001 he joined the faculty as an associate professor at Kansas State University and in 2006 was appointed full professor in the Department of Physics. Most recently Dr Chang was awarded a Mercator Professorship, by the German Science Foundation.
CREOL Colloquium SeriesContact: Aristide DogariuPresentation starts at 11:00 AM preceded by mingling & refreshments from 10:30.
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