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20 December 2022 High-efficiency Brillouin random fiber laser based on dynamic fiber grating-incorporated half-open linear cavity
Zizhou Wei, Haozhe Shou, Han Wang, Yichun Li, Yikun Jiang, Jilin Zhang, Haoran Xie, Fufei Pang, Liang Zhang
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Proceedings Volume 12314, Optoelectronic Devices and Integration XI; 123140I (2022) https://doi.org/10.1117/12.2643687
Event: SPIE/COS Photonics Asia, 2022, Online Only
Abstract
We proposed and demonstrated a high-efficiency Brillouin random fiber laser (BRFL) in a half-open linear random cavity incorporating with a self-inscribed dynamic fiber grating (DFG) for laser frequency stabilization. The DFG can be produced when the ion population distribution along erbium-doped fibers is periodically modulated by two coherent counter-propagating standing waves via the spatial hole-burning effect. Consequently, a BRFL with the linear half-open-cavity exhibited an optimized laser efficiency while the embedded DFG effectively purified the random modes and suppress the frequency drift caused by multiple random mode hopping. With a low laser threshold of 13.9 mW, the laser efficiency of up to 19.3% was observed, which is four times higher than that of the BRFL with a half-open ring cavity. It suggests that the proposed BRFLs could be beneficial to practical applications in fiber-optic sensing and coherent communication
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Zizhou Wei, Haozhe Shou, Han Wang, Yichun Li, Yikun Jiang, Jilin Zhang, Haoran Xie, Fufei Pang, and Liang Zhang "High-efficiency Brillouin random fiber laser based on dynamic fiber grating-incorporated half-open linear cavity", Proc. SPIE 12314, Optoelectronic Devices and Integration XI, 123140I (20 December 2022); https://doi.org/10.1117/12.2643687
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KEYWORDS
Fiber lasers
Laser stabilization
Rayleigh scattering
Random lasers
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