Preliminary Study of Single-Shot SHG-FROG Measurement of Femtosecond Laser Pulses  

作　　者：XU Yong-sheng, ZHANG Xiao-hua 

出　　处：《Annual Report of China Institute of Atomic Energy》2007年第1期161-162,共2页中国原子能科学研究院年报（英文版）

摘　　要：We combine the single shot SHG autocorrelator and the spectrometer in our laboratory to set up a single shot SHG-FROG measurement apparatus. FROG is the initial abbreviation ofWe combine the single shot SHG autocorrelator and the spectrometer in our laboratory to set up a single shot SHG-FROG measurement apparatus. FROG is the initial abbreviation of frequency-resolved optical gating, which basic principle is described as follows： the laser to be measured is splitted into two beams at first, one of which is used to be probe beam, and another be switch beam, then the two beams are combined in the nonlinear medium to interact to each other to produce the double frequency laser, and then the new laser is coupled into the spectrometer to be resolved in frequency domain, and at last, a 2D CCD array is used to capture the spectrogram from the spectrometer. In the base of the data obtained by the CCD, using the method of FFT iterative, we retrieve the electric field distribution, phase, and the corresponding chirp information from the spectrogram in the time and frequency domains.

关 键 词：激光技术 飞秒激光脉冲 SHG-FROG测量 电场 

分 类 号：TN24[电子电信—物理电子学]