Semiconductor saturable absorber mirror passively Q-switched 2.97 μm fluoride fiber laser

Jianfeng Li; Hongyu Luo; Yulian He; Yong Liu; Binbin Luo; Zhongyuan Sun; Lin Zhang; Sergei K. Turitsyn

doi:10.1117/12.2053893

1 May 2014 Semiconductor saturable absorber mirror passively Q-switched 2.97 μm fluoride fiber laser

Jianfeng Li, Hongyu Luo, Yulian He, Yong Liu, Binbin Luo, Zhongyuan Sun, Lin Zhang, Sergei K. Turitsyn

Proceedings Volume 9135, Laser Sources and Applications II; 913504 (2014) https://doi.org/10.1117/12.2053893
Event: SPIE Photonics Europe, 2014, Brussels, Belgium

Abstract

A diode-cladding-pumped mid-infrared passively Q-switched Ho³⁺-doped fluoride fiber laser using a reverse designed broad band semiconductor saturable mirror (SESAM) was demonstrated. Nonlinear reflectivity of the SESAM was measured using an in-house Yb³⁺-doped mode-locked fiber laser at 1062 nm. Stable pulse train was produced at a slope efficient of 12.1% with respect to the launched pump power. Maximum pulse energy of 6.65 μJ with a pulse width of 1.68 μs and signal to noise ratio (SNR) of ~50 dB was achieved at a repetition rate of 47.6 kHz and center wavelength of 2.971 μm. To the best of our knowledge, this is the first 3 μm region SESAM based Q-switched fiber laser with the highest average power and pulse energy, as well as the longest wavelength from mid-infrared passively Q-switched fluoride fiber lasers.

Citation Download Citation

Jianfeng Li, Hongyu Luo, Yulian He, Yong Liu, Binbin Luo, Zhongyuan Sun, Lin Zhang, and Sergei K. Turitsyn "Semiconductor saturable absorber mirror passively Q-switched 2.97 μm fluoride fiber laser", Proc. SPIE 9135, Laser Sources and Applications II, 913504 (1 May 2014); https://doi.org/10.1117/12.2053893

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