Open AccessGeneration of 3.5W high efficiency blue-violet laser by intracavity frequency-doubling of an all-solid-state tunable Ti:sapphire laser
Author(s) -
Xin Ding,
R. Wang,
H. Zhang,
Wuqi Wen,
Lei Huang,
Peisheng Wang,
Jianquan Yao,
Xiaoyang Yu,
Z. Li
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.16.004582
Subject(s) - materials science , laser , sapphire , optics , blue laser , energy conversion efficiency , second harmonic generation , ti:sapphire laser , optoelectronics , laser pumping , slope efficiency , laser beam quality , laser power scaling , wavelength , fiber laser , laser beams , physics
In this paper, we report a high power, high efficiency blue-violet laser obtained by intracavity frequency-doubling of an all-solid-state Q-switched tunable Ti:sapphire laser, which was pumped by a 532 nm intracavity frequency-doubled Nd:YAG laser. A beta-BaB2O4 (BBO) crystal was used for frequency-doubling of the Ti:sapphire laser and a V-shape folded three-mirror cavity was optimized to obtain high power high efficiency second harmonic generation (SHG). At an incident pump power of 22 W, the tunable output from 355 nm to 475 nm was achieved, involving the maximum average output of 3.5 W at 400 nm with an optical conversion efficiency of 16% from the 532 nm pump laser to the blue-violet output. The beam quality factor M(2) was measured to be Mx(2)=2.15, My(2)=2.38 for characterizing the tunable blue laser.