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参量激光的脉冲缩短 Parametric Laser Pulse Shortening

演讲课题:参量激光的脉冲缩短 Parametric Laser Pulse Shortening

演讲人:黄衍介 Yen-Chieh Huang

演讲摘要:

The quality of laser machining highly depends on the laser pulse width. Q-switched and mode-locked lasers are the most popular pulsed lasers to date. A Q-switched laser can generate a laser pulse in the ns regime, whereas a mode-locking laser often generates a laser pulse in the ps and fs regime. The latter is relatively costly. The energy in a Q-switched laser can be transferred to that of a mode-locked laser pulse through some delicate amplification process. For example, GW fs laser is often realized by using a Q-switched laser as a pump to a regenerative or multi-pass amplifier seeded by a mode-locked laser oscillator. It is economically desirable to convert a cheap ns pulse from a Q-switched laser to an expensive fs pulse for laser applications. Here we present an effective scheme to greatly shorten a Q-switched laser pulse from the spectral-temporal correlation in optical parametric generation.

黄衍介 Yen-Chieh Huang

国立清華大學光電工程研究所所長

光電研究中心主任

Yen-Chieh Huang received his MS and PhD degrees in 1991 and 1995, respectively, from the Electrical Engineering Department, Stanford University. In 1997, he became a faculty member of the National Tsinghua University (NTHU) on Taiwan. Dr. Huang is currently the directors of the Institute of Photonics Research Center and the Photonics Research Center at NTHU. His research interest includes quasi-phase-matched nonlinear optics and relativistic photonics. He pioneers on the study of distributed feedback optical parametric oscillator, chirped pulse superradiant free-electron laser, and optical-structure particle accelerator.

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