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1 February 2024 SBS suppression in a narrow-linewidth fiber amplifier with cylindrical vector mode transformation and nonlinear spectral compression
Hang Liu, Shixin Liu, Xinlei Shi, Lingfan Feng, Yujun Feng, Wanjing Peng, Yinhong Sun, Zhigang Zhao, Chun Tang
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Proceedings Volume 13068, Fifth International Conference on Optoelectronic Science and Materials (ICOSM 2023); 130680C (2024) https://doi.org/10.1117/12.3016408
Event: Fifth International Conference on Optoelectronic Science and Materials (ICOSM 2023), 2023, Hefei, China
Abstract
In this paper, we investigated the SBS suppression potential in a fiber amplifier with both cylindrical vector beam output and nonlinear spectral compression method applied. By applying different kinds of modes output and different spectral management schemes, the SBS threshold of a same fiber amplifier was measured to be 67 W, 95 W and 104 W. These schemes correspond to LP01 mode output with spectrum maintained, TM01 mode output with spectrum maintained and TM01 mode output with spectrum narrowed, respectively. Experimental results indicated that the SBS threshold of our fiber amplifier with cylindrical vector beam output and spectrum compressed can be enhanced by 1.56 times, comparing to the traditional Gaussian beam one. The combination of the two techniques can pave the way for mitigating the SBS effect in high-power narrow-linewidth fiber amplifiers.
(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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Hang Liu, Shixin Liu, Xinlei Shi, Lingfan Feng, Yujun Feng, Wanjing Peng, Yinhong Sun, Zhigang Zhao, and Chun Tang "SBS suppression in a narrow-linewidth fiber amplifier with cylindrical vector mode transformation and nonlinear spectral compression", Proc. SPIE 13068, Fifth International Conference on Optoelectronic Science and Materials (ICOSM 2023), 130680C (1 February 2024); https://doi.org/10.1117/12.3016408
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KEYWORDS
Fiber amplifiers
Phase modulation
Amplitude modulation
Fermium
Frequency modulation
Scanning probe microscopy
Modulation
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