Passive Q-switching dynamics in all-fiber lasers with ring interferometer

Lin Huang; Yongzhi Liu; Zhiyong Dai; Qianshu Zhang

doi:10.1117/12.830906

21 May 2009 Passive Q-switching dynamics in all-fiber lasers with ring interferometer

Lin Huang, Yongzhi Liu, Zhiyong Dai, Qianshu Zhang

Proceedings Volume 7282, 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies; 728228 (2009) https://doi.org/10.1117/12.830906
Event: AOMATT 2008 - 4th International Symposium on Advanced Optical Manufacturing, 2008, Chengdu, Chengdu, China

Abstract

The cooperation of Rayleigh scattering (RS) in fiber interference loop and stimulated Brillouin scattering (SBS) in fiber can change Q factor in resonant cavity, based on which a all-fiber Er-doped Q-switched fiber laser with interference loop is designed. During experiment, the attributes of output laser exploiting interference loops with different coupling ratios and lengths is investigated. A train of pulse laser with pulse duration of 7.2ns, pulse period of 4.709μs, average output power of 5.4mW at pump power of 37mW is obtained which has a good waveform and a peak power fluctuation of : 30%. The results show that interference loop with too high coupling ratio has no contribution to the generation of pulse laser and the coupling ratio of 10% is suit for it. Even if the coupling ratio of : 10% is chosen, the length of the loop has influence to the attribute of the output laser pulse and the length around 2m is conducive to obtaining good output.

Citation Download Citation

Lin Huang, Yongzhi Liu, Zhiyong Dai, and Qianshu Zhang "Passive Q-switching dynamics in all-fiber lasers with ring interferometer", Proc. SPIE 7282, 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 728228 (21 May 2009); https://doi.org/10.1117/12.830906

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