摘要
采用几何光学的方法分析了离轴棱镜对在不同离轴偏移量的情况下光线的传输特性。通过光线追踪技术建立了离轴棱镜对内光线传输的数值模型,得到离轴偏移量d与棱镜斜边L的数值关系。讨论了3种情况下棱镜对间光线传输次数、传输方向和分布特性。结果表明,当d=L/2n(n=1,2,3…)时,光线在棱镜对内等间距的传输便于增益的均匀提取,更有利于光线在板条状增益介质中的多程传输与放大。
The ray transmission characteristics of off-axis prism-pair are analyzed using geometrical optics method at different offset. The numerical model of off-axis prism-pair is built by ray tracing. The numerical relationship between the offset d and hypotenuse L of the off-axis prism-pair is obtained. The transmission direction, the number of ray transmission and the distribution of ray in the off-axis prism-pair are discussed at three different cases. The results show that the rays transmitting in the off-axis prism-pair have equal distance space distribution pattern when d=L/2n （n= 1,2,3...）so it is much more benefit to obtain unform gain for each pass of rays and to realize multi-pass and amplification of slab-shaped gain medium.
出处
《中国激光》
EI
CAS
CSCD
北大核心
2009年第8期2019-2022,共4页
Chinese Journal of Lasers
基金
华中科技大学研究生科技创新基金项目(HF-05-02-2007-230)资助课题
关键词
几何光学
直角棱镜
多程传输
离轴棱镜对
板条激光器
geometrical optics
right-angled prism
multi-pass
off-axis prism-pair
slab laser
