Hundred-watt level high-order mode all-fiberized random distributed feedback Raman fiber laser with high mode purity

Yang Li; Xiulu Hao; Yi An; Yi Zhu; Tianfu Yao; Xianglong Zeng; Pu Zhou

doi:10.3788/COL202321.021406

Journals >Chinese Optics Letters >Volume 21 >Issue 2 >Page 021406 > Article

Chinese Optics Letters
Vol. 21, Issue 2, 021406 (2023)

Hundred-watt level high-order mode all-fiberized random distributed feedback Raman fiber laser with high mode purity

Yang Li¹, Xiulu Hao¹, Yi An¹, Yi Zhu², Tianfu Yao^1、*, Xianglong Zeng^2、**, and Pu Zhou¹

Author Affiliations

¹College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China

²Key Laboratory of Specialty Fiber Optics and Optical Access Networks, Joint International Research Laboratory of Specialty Fiber Optics and Advanced Communication, Shanghai Institute for Advanced Communication and Data Science, Shanghai University, Shanghai 200444, China

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DOI: 10.3788/COL202321.021406 Cite this Article Set citation alerts

Yang Li, Xiulu Hao, Yi An, Yi Zhu, Tianfu Yao, Xianglong Zeng, Pu Zhou. Hundred-watt level high-order mode all-fiberized random distributed feedback Raman fiber laser with high mode purity[J]. Chinese Optics Letters, 2023, 21(2): 021406 Copy Citation Text

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Abstract

An all-fiberized random distributed feedback Raman fiber laser (RRFL) with

{LP}_{11}

mode output at 1134 nm has been demonstrated experimentally, where an intracavity acoustically induced fiber grating is employed for modal switching. The maximum output power of

{LP}_{11}

mode is 93.8 W with the modal purity of 82%, calculated by numerical mode decomposition technology based on stochastic parallel-gradient descent algorithm. To our best knowledge, this is the highest output power with high purity of

{LP}_{11}

mode generated from the RRFL. This work may pave a path towards advanced fiber lasers with special temporal and spatial characteristics for applications.

Keywords

acoustically induced fiber grating LP11 mode mode decomposition random distributed feedback Raman fiber laser