Efficient middle-infrared generation in LiGaS2 by simultaneous spectral broadening and difference-frequency generation

被引：27
|
作者：
Chen, B-H. [1 ,2 ]
Nagy, T. [3 ]
Baum, P. [1 ,2 ]
机构：
[1] Ludwig Maximilians Univ Munchen, Coulombwall 1, D-85748 Garching, Germany
[2] Max Planck Inst Quantum Opt, Hans Kopfermann Str 1, D-85748 Garching, Germany
[3] Max Born Inst Nonlinear Opt & Short Pulse Spect, Max Born Str 2A, D-12489 Berlin, Germany
来源：
OPTICS LETTERS | 2018年 / 43卷 / 08期
基金：
欧盟地平线“2020”;
关键词：
HIGH-HARMONIC GENERATION; SELF-PHASE MODULATION; PULSE-COMPRESSION; MIDINFRARED PULSES; REPETITION RATE; FIBERS; POWER; KHZ; MICROSCOPY;
D O I：
10.1364/OL.43.001742
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report a surprisingly broadband and efficient midin-frared pulse generation in LiGaS2 (Langasite, LGS) by invoking a simultaneous interplay of intrapulse difference-frequency generation, self-phase modulation, and dispersion. This cascaded mechanism expands the output bandwidth and output power at the same time. With 30-fs driving pulses centered at 1030-nm wavelength we obtain a broadband middle-infrared spectrum of 8-11 mu m with an LGS crystal as thick as 4 mm, which is eight times longer than the walk-off length. (C) 2018 Optical Society of America
引用
收藏
页码：1742 / 1745
页数：4
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