Suppression RIN of CW fiber laser by nonlinear absorption effect

Weiqian Zhao; Chun Yang

doi:10.1117/12.2601001

31 August 2021 Suppression RIN of CW fiber laser by nonlinear absorption effect

Weiqian Zhao, Chun Yang

Proceedings Volume 11907, Sixteenth National Conference on Laser Technology and Optoelectronics; 119070C (2021) https://doi.org/10.1117/12.2601001
Event: Sixteenth National Conference on Laser Technology and Optoelectronics, 2021, Shanghai, China

Abstract

We analyze and demonstrate the suppression relative intensity noise (RIN) of continuous-wave (CW) fiber laser. The transfer functions of pump-rate and cavity-loss fluctuations are derived and used for calculating the RIN spectrum of the fiber laser. An CW fiber laser is built, and its RIN spectrum is measured. The RIN at the relaxation oscillation frequency of the laser is reduced by 19.8dB and 28.4 dB respectively under different pump powers by adding intra-cavity nonlinear absorber.

Citation Download Citation

Weiqian Zhao and Chun Yang "Suppression RIN of CW fiber laser by nonlinear absorption effect", Proc. SPIE 11907, Sixteenth National Conference on Laser Technology and Optoelectronics, 119070C (31 August 2021); https://doi.org/10.1117/12.2601001

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