Open AccessWatt-level passively Q-switched Yb:LuPO4 miniature crystal laser with few-layer MoS2 saturable absorber
Author(s) -
Xiaodan Dou,
Jie Yang,
Min Zhu,
Honghao Xu,
Wenjuan Han,
Degao Zhong,
Bing Teng,
Junhai Liu
Publication year - 2018
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.26.014232
Subject(s) - saturable absorption , materials science , laser , optics , q switching , pulse duration , resonator , pulse (music) , pulse width modulation , fiber laser , crystal (programming language) , slope efficiency , optoelectronics , power (physics) , physics , quantum mechanics , detector , computer science , programming language
We demonstrate a Yb:LuPO 4 miniature crystal laser that is formed with a 5 mm long plane-parallel resonator, and is passively Q-switched by a few-layer MoS 2 saturable absorber. With 6.53 W of pump power absorbed, an average output power of 2.06 W at 1020.8 nm is generated at a pulse repetition rate of 429 kHz with a slope efficiency of 50%; the resulting pulse energy, duration, and peak power are respectively 4.8 μJ, 83 ns, and 57.8 W. While operating at 1010.5 nm, the laser is capable of producing an average output power of 1.53 W at a repetition rate of 870 kHz, with pulse duration being shortened to 61 ns. These results represent a significant progress in the development of Yb- or Nd-ion lasers passively Q-switched by two-dimensional MoS 2 .