Active Q-switching operation of slab Ho:SYSO laser wing-pumped by fiber coupled laser diodes | Zendy

Xiaoming Duan | Zendy; Yingjie Shen | Zendy; Jing Gao | Zendy; Hongbo Zhu | Zendy; Chuanpeng Qian | Zendy; Liangbi Su | Zendy; Lihe Zheng | Zendy; Linjun Li | Zendy; Baoquan Yao | Zendy; Tongyu Dai | Zendy

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Active Q-switching operation of slab Ho:SYSO laser wing-pumped by fiber coupled laser diodes

Author(s) -

Xiaoming Duan,

Yingjie Shen,

Jing Gao,

Hongbo Zhu,

Chuanpeng Qian,

Liangbi Su,

Lihe Zheng,

Linjun Li,

Baoquan Yao,

Tongyu Dai

Publication year - 2019

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.27.011455

Subject(s) - optics , materials science , laser , diode , q switching , slab , pulse width modulation , fiber laser , slope efficiency , pulse (music) , laser pumping , power (physics) , optoelectronics , physics , quantum mechanics , geophysics , detector

In this paper, we demonstrate the continuous-wave and acousto-optical Q-switched performance of diode-pumped slab Ho:(Sc 0.5 Y 0.5 ) 2 SiO 5 (Ho:SYSO) laser at 2.1 µm for the first time. Two 1.91-µm laser diodes were used to pump the Ho:SYSO crystal. With a wing-pumping structure, at absorbed pump power of 44.7 W, the continuous wave slab Ho:SYSO laser produced 20.7 W maximum output power at 2097.9 nm, resulting in a slope efficiency of 53.1% with respect to the absorbed pump power. In the Q-switched regime, the slab Ho:SYSO laser produced up to 3.4 mJ pulse energy with 20 ns minimum pulse width at pulse repetition frequency of 5 kHz, corresponding to a peak power of 170 kW.

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