Compact Polygonal Active-Mirror Laser With Composite Nd:YAG/YAG Gain Medium

A compact polygonal active-mirror (PAM) laser with composite Nd: YAG/YAG multithin-disk gain medium has been demonstrated with total internal reflection scheme. Five Nd:YAG thin disks with a neodymium concentration of 0.7 at.% and thickness of ∼0.2 mm were...

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Bibliographic Details
Main Authors: Yanzhong Chen, Ye Lang, Lifen Liao, Zhongwei Fan, Jianguo He, Guangyan Guo, Weiran Lin, Yunfeng Ma, Hongbo Zhang, Jian Zhang
Format: Article
Language:English
Published: IEEE 2017-01-01
Series:IEEE Photonics Journal
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Online Access:https://ieeexplore.ieee.org/document/8003271/
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Summary:A compact polygonal active-mirror (PAM) laser with composite Nd: YAG&#x002F;YAG multithin-disk gain medium has been demonstrated with total internal reflection scheme. Five Nd:YAG thin disks with a neodymium concentration of 0.7 at.&#x0025; and thickness of &#x223C;0.2&#x00A0;mm were bonded to five different surfaces of a hexagonal YAG substrate. With no heat sink, output power of 1.03 W at 1064 nm and beam quality of M<sup>2</sup> &#x003D; 1.21 was obtained from a short-cavity oscillator based on the PAM architecture, under an absorption pump power of 2.30 W, with a slope efficiency and optical to optical efficiency of 55.8&#x0025; and 44.8&#x0025;, respectively.
ISSN:1943-0655