Sub-four-cycle laser pulses directly from a high-repetition-rate optical parametric chirped-pulse amplifier at 3.4 μm

被引：64
|
作者：
Mayer, B. W. [1 ]
Phillips, C. R. [1 ,2 ]
Gallmann, L. [1 ]
Fejer, M. M. [2 ]
Keller, U. [1 ]
机构：
[1] ETH, Inst Quantum Elect, Dept Phys, CH-8093 Zurich, Switzerland
[2] Stanford Univ, Edward L Ginzton Lab, Stanford, CA 94305 USA
来源：
OPTICS LETTERS | 2013年 / 38卷 / 21期
基金：
瑞士国家科学基金会;
关键词：
QUASI-PHASEMATCHING GRATINGS; CYCLE MIDINFRARED PULSES; GENERATION; APODIZATION; 2.1-MU-M; DESIGN; POWER;
D O I：
10.1364/OL.38.004265
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We generate sub-four-cycle pulses (41.6 fs) with 12 mu J of pulse energy in the mid-infrared spectral range (center wavelength 3.4 mu m) from a high-repetition-rate, collinear three-stage optical parametric chirped-pulse amplifier (OPCPA) operating at 50 kHz. Apodized aperiodically poled MgO:LiNbO3 crystals with a negative chirp rate are employed as gain media to achieve ultrabroadband phase-matching while minimizing optical parametric generation. The seed pulses are obtained via a 1.56 mu m femtosecond fiber laser, which is spectrally broadened in a dispersion-shifted telecom fiber to support 1000 nm bandwidth idler pulses in the mid-infrared. (C) 2013 Optical Society of America
引用
收藏
页码：4265 / 4268
页数：4
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