高能量激光二极管侧面抽运风冷Nd∶YAG脉冲激光器  

High-Energy LD Side-Pumped Q-Switched Air Cooling Nd∶YAG Laser

作　　者：杨晓涛[1] 马修真 刘友[1] 

机构地区：[1]哈尔滨工程大学动力装置电控技术研究所,黑龙江哈尔滨150001

出　　处：《激光与光电子学进展》2011年第11期131-134,共4页Laser & Optoelectronics Progress

摘　　要：介绍了一种激光二极管侧面抽运的风冷高能量Nd：YAG激光器，当重复频率为30Hz时，峰值功率可达到12Mw，脉冲宽度为11ns。激光器重复频率为1～30Hz可调，光光转换效率达到13．2％，激光输出波长为1064．2nm，带宽为1nm，光束质量因子M2为2．85。针对以往大功率激光器的冷却系统体积大的问题，采用半导体热电制冷（TEC）配合风扇的风冷系统，省去了体积庞大的水冷系统，为整机的小型化提供了可能性。We report a high-energy LD side-pumped Nd： YAG Q-switched laser with air cooling system. The peak power is 12 MW, and the pulse width is 11 ns when the repetition rate is 30 Hz. The repetition rate is tunable from 1 to 30 Hz with 1000 mJ pump energy. The optical-to-optical efficiency is 13. 2%. The central wavelength is 1064.2 nm with bandwidth of about 1 nm. The beam quality facter M2 is 2. 85. We adopt a semiconductor thermoelectricity cooling （TEC） system with fan air-cooling system, eliminating the need for a bulky cooling system as that in traditional high-power lasers. This offers the possibility of miniaturization of the whole laser system.

关 键 词：激光器 风冷 激光二极管侧面抽运 Nd∶YAG晶体 

分 类 号：O434.3[机械工程—光学工程]