Few-cycle mid-infrared pulse full characterization in single shot

被引：2
|
作者：
Xu, Canhua [1 ]
Li, Chuang [1 ]
Song, Liwei [1 ]
Wang, Ding [1 ]
Leng, Yuxin [1 ]
机构：
[1] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, State Key Lab High Field Laser Phys, Shanghai 201800, Peoples R China
来源：
CHINESE OPTICS LETTERS | 2012年 / 10卷 / 12期
基金：
中国国家自然科学基金;
关键词：
MU-M; LASER; GENERATION; REGIME; FIELD;
D O I：
10.3788/COL201210.123202
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We build a frequency resolved optical gating (FROG) setup based on the second harmonic generation (SHG) FROG to characterize the mid-infrared (MIR) few-cycle laser pulse in single shot basis. Considering the extremely wide bandwidth; we use 20-mu m-thick BBO crystal as the nonlinear medium; and correct the spectral response with the frequency summing efficiency. Spatial splitting is adopted to avoid additional material dispersion. In combination with a 4f imaging; this configuration enables the setup to run in single shot. With the central wavelength of 1.8 mu m; the measured pulse has a duration of 9.3 fs; which corresponds to about 1.5 cycles.
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页数：3
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