Open AccessPassive Q-Switching of a Diode-Pumped Pr:LiYF4 Visible Laser Using WS2 as Saturable Absorber
Author(s) -
Yongjie Cheng,
Jian Peng,
Bin Xu,
Han Yang,
Zhengqian Luo,
Huiying Xu,
Zhiping Cai,
Jian Weng
Publication year - 2016
Publication title -
ieee photonics journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.725
H-Index - 73
eISSN - 1943-0655
pISSN - 1943-0647
DOI - 10.1109/jphot.2016.2550804
Subject(s) - engineered materials, dielectrics and plasmas , photonics and electrooptics
Q-switched laser operation of a blue-diode-pumped Pr:LiYF4 laser is demonstrated at 640 nm for the first time by using a tungsten disulfide (WS2) nanosheet material as a saturable absorber. Stable laser pulses of 630 ns are obtained with a pulse repetition rate of 88 kHz, a pulse energy of about 0.24 μJ, and an average output power of 21.5 mW. This paper broadens the application of WS2-like 2-D nanosheet saturable absorbers from the near- and mid-infrared to the visible domain.