Open AccessContinuous-wave and passively Q-switched pulsed 1.5 µm Er:Yb:Ba3Gd(PO4)3 lasers
Author(s) -
Jie Wu,
Jian Huang,
Yidong Huang,
Xinghong Gong,
Yanfu Lin,
Zhixun Luo,
Yujin Chen
Publication year - 2022
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.472438
Subject(s) - materials science , output coupler , laser , saturable absorption , optics , q switching , crystal (programming language) , slope efficiency , continuous wave , pulse duration , optoelectronics , fiber laser , physics , computer science , programming language
An eye-safe 1567 nm continuous-wave laser with a maximum output power of 50 mW and a slope efficiency of 21.1% was demonstrated in an Er:Yb:Ba 3 Gd(PO 4 ) 3 crystal. By using a Co 2+ :MgAl 2 O 4 crystal with an initial transmission of 95% as a saturable absorber, a stable passively Q-switched pulsed laser was also realized in the crystal. The effects of the output coupler transmission and cavity length on pulsed performance were investigated. At an absorbed pump power of 350 mW, a 1541 nm Er:Yb:Ba 3 Gd(PO 4 ) 3 pulsed laser with a repetition frequency of 0.86 kHz, duration of 38 ns, energy of 21.2 µJ, and peak output power of 0.56 kW was obtained.