Chinese Journal of Lasers, Volume. 39, Issue 11, 1102003(2012)
Fast Close-Loop Phase Control to Output Transform-Limited Femtosecond Laser Pulses
A close-loop chirp compensation system which consists of a simplified frequency-resolved optical gating (FROG) device and liquid crystal spatial light modulator (LC-SLM) is demonstrated. Femtosecond laser pusles are measured by using simplified frequency-resolved optical grating. The phase feedback signals derived from the simplified FROG control the LC-SLM to compensate the chirp of pulses. As a result, 74-fs transform-limited pulses are obtained from nonlinear fiber femtosecond laser amplifier.
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Qian Cheng, Wang Sijia, Gu Chenglin, Zhang Limeng, Liu Bowen, Pang Dongqing, Hu Minglie, Chai Lu, Wang Qingyue. Fast Close-Loop Phase Control to Output Transform-Limited Femtosecond Laser Pulses[J]. Chinese Journal of Lasers, 2012, 39(11): 1102003
Category: Laser physics
Received: Jun. 26, 2012
Accepted: --
Published Online: Sep. 26, 2012
The Author Email: Cheng Qian (qcsijin@tju.edu.cn)