Real-time modal decomposition of fiber laser beams using a spatial mode multiplexer

被引：0
|
作者：
Tu, Yiming [1 ,2 ,3 ]
Jauregui, Cesar [1 ]
Kholaif, Sobhy [1 ]
Limpert, Jens [1 ,2 ,3 ,4 ]
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] Fraunhofer Inst Appl Opt & Precis Engn, Albert Einstein Str 7, D-07745 Jena, Germany
来源：
OPTICS LETTERS | 2025年 / 50卷 / 02期
关键词：
D O I：
10.1364/OL.546209
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A novel, to the best of our knowledge, approach for the modal decomposition of a fiber laser beam is demonstrated using a spatial mode multiplexer. Since the modal decomposition is carried out optically, this approach is able to obtain the modal content at speeds up to the GHz level. In order to demonstrate such performance, we have applied this approach to the modal analysis of a Q-switched pulse generated in a multimode fiber with alternating intra-pulse mode content. (c) 2025 Optica Publishing Group. All rights, includand similar technologies, are reserved.
引用
收藏
页码：690 / 693
页数：4
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