Coherent addition of fiber-amplified ultrashort laser pulses

被引：70

作者：

Seise, Enrico ^{[1
,3
]}

Klenke, Arno ^{[1
]}

Limpert, Jens ^{[1
,2
,3
]}

Tuennermann, Andreas ^{[1
,2
,3
]}

机构：

[1] Univ Jena, Inst Appl Phys, Jena, Germany

[2] Fraunhofer Inst Appl Opt & Precis Engn, Jena, Germany

[3] Helmholtz Inst Jena, Jena, Germany

来源：

OPTICS EXPRESS | 2010年 / 18卷 / 26期

基金：

欧洲研究理事会;

关键词：

POWER; AMPLIFICATION; KW;

D O I：

10.1364/OE.18.027827

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report on a novel approach of performance scaling of ultrafast lasers by means of coherent combination. Pulses from a single mode-locked laser are distributed to a number of spatially separated fiber amplifiers and coherently combined after amplification. Splitting and combination is achieved by polarization cubes, i.e. the approach bases on polarization combining. A Hansch-Couillaud detector measures the polarization state at the output. The error signal (deviation from linear polarization) is used to stabilize the synchronization of different channels. In a proof-of-principle experiment the combination of two femtosecond fiber-based CPA systems is presented. A combining efficiency as high as 97% has been achieved. The technique offers a unique scaling potential and can be applied to all ultrafast amplification schemes independent of the architecture of the gain medium. (C) 2010 Optical Society of America

引用

页码：27827 / 27835

页数：9

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