Noise suppression in femtosecond mid-infrared light sources

被引:236
作者
Hamm, P [1 ]
Kaindl, RA [1 ]
Stenger, J [1 ]
机构
[1] Max Born Inst Nichtlineare Opt & Kurzzeitspektros, D-12489 Berlin, Germany
关键词
D O I
10.1364/OL.25.001798
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
An experimental and theoretical study of intrinsic correlations and noise-suppression mechanisms in two-stage femtosecond mid-IR light sources is presented. The setup, based on parametric amplification in BBO and subsequent difference-frequency mixing in AgGaS2, delivers similar to 100-fs mid-IR pulses with 1-2-muJ energy. Exceptionally low pulse-energy fluctuations of only 0.2% in the mid-IR (lambda approximate to 3-6 mum) are found, which are much smaller than the Ti:sapphire amplifer noise. The noise suppression is analyzed and found to stem from the interplay between dispersion and pump depletion. (C) 2000 Optical Society of America.
引用
收藏
页码:1798 / 1800
页数:3
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