In-band pumped, Q-switched thulium-doped fiber laser system delivering 140 Wand 7 mJ pulse energy

被引：4

作者：

Lenski, Mathias ^{[1
]}

Heuermann, Tobias ^{[1
,2
,3
]}

Wang, Ziyao ^{[1
]}

Aleshire, Christopher ^{[1
]}

Gaida, Christian ^{[4
]}

Jauregui, Cesar ^{[1
,5
]}

Limpert, Jens ^{[1
,2
,3
,5
]}

机构：

[1] Friedrich Schiller Univ Jena, Inst Appl Phys, Abbe Ctr Photon, Albert Einstein Str 15, D-07745 Jena, Germany

[2] Helmholtz Inst Jena, Frobelstieg 3, D-07743 Jena, Germany

[3] GSI Helmholtzzentrum Schwerionenforschung, Planckstr 1, D-64291 Darmstadt, Germany

[4] Act Fiber Syst GmbH, Ernst Ruska Ring 17, D-07745 Jena, Germany

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

来源：

OPTICS LETTERS | 2024年 / 49卷 / 14期

基金：

欧洲研究理事会;

关键词：

AMPLIFIERS;

D O I：

10.1364/OL.528330

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report on a highly efficient, in-band pumped, Q-switched, Tm-doped, rod-type master oscillator power amplifier (MOPA) system delivering up to 140 W average output power and 7 mJ pulse energy with a slope efficiency of 77% at 20 kHz repetition rate. The amplifier is pumped with Raman-shifted fiber lasers centered at 1692 nm. This in-band pump scheme for Tm-doped fiber lasers can significantly mitigate their quantum defect-related heat load limitations. At the same time, this pump wavelength yields a similar amount of storable and extractable energy to the state-of-the-art pumping at 793 nm. This approach has allowed for the development of highly efficient Tm-doped fiber laser systems combining a high average power and a high output pulse energy. (c) 2024 Optica Publishing Group. All rights, including for text and data mining (TDM), Artificial Intelligence (AI) training, and similar technologies, are reserved.

引用

页码：4042 / 4045

页数：4

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