Open AccessDiode-pumped passively Q-switched Er^3+:Yb^3+:Sr_3Lu_2(BO_3)_4 laser at 1534 nm
Author(s) -
Yujin Chen,
Jianhua Huang,
Yongqiang Zou,
Yanfu Lin,
Xinghong Gong,
Zhixun Luo,
Yidong Huang
Publication year - 2014
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.008333
Subject(s) - laser , materials science , optics , crystal (programming language) , diode , q switching , laser diode , pulse duration , pulse (music) , resonator , ion , optoelectronics , chemistry , physics , organic chemistry , detector , computer science , programming language
End-pumped by a 970 nm diode laser, 1534 nm pulse laser with about 16 μJ energy, 48 ns duration, and 21 kHz repetition rate was obtained at absorbed pump power of 11.8 W in a Z-cut 1.08-mm-thick Er(3+):Yb(3+):Sr(3)Lu(2)(BO(3))(4) crystal passively Q-switched by a Co(2+):Mg(0.4)Al(2.4)O(4) crystal. The effects of absorbed pump power and resonator cavity length on output performances of the pulse laser were investigated. Compared with that of the Er(3+):Yb(3+):LuAl(3)(BO(3))(4) laser in a similar experimental condition, higher pulse energy realized in the Er(3+):Yb(3+):Sr(3)Lu(2)(BO(3))(4) crystal may be originated from its smaller stimulated-emission cross section at 1534 nm and longer fluorescence lifetime of the (4)I(13/2) upper laser level of Er(3+) ions.