Open AccessHigh efficient 156 μm laser operation of Czochralski grown Er:Yb:Sr_3Y_2(BO_3)_4 crystal
Author(s) -
Jianhua Huang,
Yujin Chen,
Yanfu Lin,
Xinghong Gong,
Zhixun Luo,
Yinbo Huang
Publication year - 2008
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.16.017243
Subject(s) - materials science , laser , crystal (programming language) , output coupler , optics , slope efficiency , doping , laser diode , diode , optoelectronics , czochralski method , active laser medium , fiber laser , laser power scaling , physics , computer science , programming language
An Er:Yb:Sr(3)Y(2)(BO(3))(4) crystal doped with 0.9 at.% Er(3+) and 18.6 at.% Yb(3+) ions was grown by the Czochralski method. End-pumped by diode laser at 970 nm in a hemispherical cavity, 1.3 W quasi-cw laser output around 1.56 microm was achieved in a 1.1-mm-thick Z-cut Er:Yb:Sr(3)Y(2)(BO(3))(4) crystal when the transmission of output coupler is 1.5%. The absorbed pump threshold and slop efficiency of the laser are 4.26 W and 20%, respectively. This crystal has flat and broad gain curve peaked around 1.56 microm, which shows that it is also a potential gain medium for tunable and short pulse lasers.