Novel black phosphorus saturable absorber based all-fiber lasers generating cylindrical vector beam pulses

Huaqing Song; Rumao Tao; Shan Huang; Xi Feng; Min Li; Xuan Tang; Benjian Shen; Li Li; Jianjun Wang

doi:10.1117/12.2564980

17 April 2020 Novel black phosphorus saturable absorber based all-fiber lasers generating cylindrical vector beam pulses

Huaqing Song, Rumao Tao, Shan Huang, Xi Feng, Min Li, Xuan Tang, Benjian Shen, Li Li, Jianjun Wang

Author Affiliations +

Proceedings Volume 11455, Sixth Symposium on Novel Optoelectronic Detection Technology and Applications; 114554N (2020) https://doi.org/10.1117/12.2564980
Event: Sixth Symposium on Novel Photoelectronic Detection Technology and Application, 2019, Beijing, China

Abstract

In this paper, we demonstrated an all fiber laser passively Q-switched by black phosphorus saturable absorber with cylindrical vector beam output. A piece of few-mode fiber Bragg grating was used as the mode-selective output coupler. The repetition rate of the pulse trains increased from 16kHz to 24.9kHz when the pump power tuned from 364mW to 460mW. The maximum pulse energy was 305.2nJ with the shortest pulse duration of 7.5μs under the pump power of 460mW.Both radial polarized and azimuthal polarized pulse output could be achieved by adjusting the polarization controllers. The purity of the cylindrical vector beam output was estimated to be over 95%.

Citation Download Citation

Huaqing Song, Rumao Tao, Shan Huang, Xi Feng, Min Li, Xuan Tang, Benjian Shen, Li Li, and Jianjun Wang "Novel black phosphorus saturable absorber based all-fiber lasers generating cylindrical vector beam pulses", Proc. SPIE 11455, Sixth Symposium on Novel Optoelectronic Detection Technology and Applications, 114554N (17 April 2020); https://doi.org/10.1117/12.2564980

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