中国激光, 2006, 33 (suppl): 45, 网络出版: 2006-04-21
应力双折射对Nd:YAG组合式片状激光振荡器转换效率和光强分布的影响
E-mail: Effect of Stress-Birefringence in Nd:YAG on Conversion Efficiency and Beam Profile in Combined Disks Laser
摘要
采用光弹性应力分析的理论,对大口径Nd:YAG介质由于生长缺陷产生的应力双折射效应进行了检测和理论分析。结合检测结果计算了应力双折射对大口径组合式片状Nd:YAG激光器转换效率的影响,计算表明在存在应力的区域会引起36.3%的平均损耗,并且损耗是一个空间调制函数,变化范围是0～0.9997。实验测量了激光器的静态透过率和近场光斑分布,验证了计算结果。
Abstract
Stress birefringence resulted from the growth defect of YAG crystal is tested and analyzed using the photoelastic stress theory. Combined with the test result, the effect of the stress birefringence on the conversion efficiency of large aperture multi-disks YAG laser is calculated. The result indicates that it causes 36.3% wasting in average where stress exists, which is a spatial modulated function, in the range of 0～0.9997. The static transmission rate and the near field spot distribution are measured in the experiment and validate the calculation.
蒋新颖, 袁晓东, 徐美健, 刘建国, 贺少勃, 曹丁象, 魏晓峰. 应力双折射对Nd:YAG组合式片状激光振荡器转换效率和光强分布的影响[J]. 中国激光, 2006, 33(suppl): 45. 蒋新颖, 袁晓东, 徐美健, 刘建国, 贺少勃, 曹丁象, 魏晓峰. E-mail: Effect of Stress-Birefringence in Nd:YAG on Conversion Efficiency and Beam Profile in Combined Disks Laser[J]. Chinese Journal of Lasers, 2006, 33(suppl): 45.
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