Coherent beam combination of Yb: YAG single-crystal rod amplifiers

被引：43

作者：

Kienel, Marco ^{[1
,2
]}

Mueller, Michael ^{[1
]}

Demmler, Stefan ^{[1
]}

Rothhardt, Jan ^{[1
,2
]}

Klenke, Arno ^{[1
,2
]}

Eidam, Tino ^{[1
,2
]}

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

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

机构：

[1] Univ Jena, Abbe Ctr Photon, Inst Appl Phys, D-07745 Jena, Germany

[2] Helmholtz Inst Jena, D-07743 Jena, Germany

[3] Fraunhofer Inst Appl Opt & Precis Engn, D-07745 Jena, Germany

来源：

OPTICS LETTERS | 2014年 / 39卷 / 11期

基金：

欧洲研究理事会;

关键词：

PULSE AMPLIFICATION; HIGH-POWER; FEMTOSECOND; ENERGY; SYSTEM; MJ;

D O I：

10.1364/OL.39.003278

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Coherent combination of ultrashort laser pulses emitted from spatially separated amplifiers is a promising power-scaling technique for ultrafast laser systems. It has been successfully applied to fiber amplifiers, since guidance of the signal provides the advantage of an excellent beam quality and straightforward superposition of beams as compared to bulk-type amplifier implementations. Herein we demonstrate, for the first time to our knowledge, a two-channel combining scheme employing Yb: YAG single-crystal rod amplifiers as an energy booster in a fiber chirped-pulse amplification system. In this proof-of-principle experiment, combined and compressed pulses with a duration of 695 fs and an energy of 3 mJ (3.7 GW of peak power) are obtained. The combining efficiency is as high as 94% and the beam quality of the combined output is characterized by a measured M-2-value of 1.2. (C) 2014 Optical Society of America

引用

页码：3278 / 3281

页数：4

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