Chinese Optics Letters, 2009, 7 (11): 1024, Published Online: Nov. 11, 2009
High power doubly resonant all-intracavity deep blue laser at 447 nm based on sum-frequency-mixing technology 
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深蓝激光器 和频 复合腔 激光二极管侧面泵浦 140.3530 Lasers, neodymium 140.3480 Lasers, diode-pumped 140.4780 Optical resonators 140.7300 Visible lasers
Abstract
A high power continuous-wave deep blue laser at 447 nm is obtained by using a doubly cavity and a type critical phase matching KTP crystal for intracavity sum-frequency-mixing. With the incident pump power of 240 W for the Nd:YAP crystal and 120 W for the other Nd:YAP crystal, the deep blue laser output of 5.7 W at 447 nm with near fundamental mode is obtained, and the beam quality M<sup>2</sup> value equals 2.53 in both horizontal and vertical directions at the maximum output power. The power stability is better than 2% at the maximum output power during half an hour. The experimental results show that the intracavity sum-frequency mixing by doubly resonant is an effective method for high power blue laser.
Yongji Yu, Guangyong Jin, Chao Wang, Xinyu Chen, Jiaxi Guo, Yibo Wang. High power doubly resonant all-intracavity deep blue laser at 447 nm based on sum-frequency-mixing technology[J]. Chinese Optics Letters, 2009, 7(11): 1024.
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