应用光学, 2011, 32 (6): 1139, 网络出版: 2012-01-11
点阵式上转换板在激光光斑采集中的应用研究
Laser spot acquisition by lattice up-conversion board
点阵式上转换板 低频窄脉冲激光光斑 评价模型 lattice up-conversion board low-frequency narrow- pulse laser spot evaluation model
摘要
通过在镜头前加装上转换板,利用其快速的红外上转换功能可以提高CCD对于低频窄脉冲光斑的采集效率。然而在利用传统面阵式工艺制成的上转换板采集光斑的过程中,普遍存在因上转换材料内部漫反射及局部饱和效应造成的光斑形状和光强分布的失真。针对上述问题,提出了一种新的点阵式上转换板制作工艺,并设计了点阵式上转换板光斑采集成像质量对比实验。实验结果表明,点阵式上转换板对低频窄脉冲光斑有更好的采集效果。为评价点阵式上转换板所采集光斑的成像质量,建立了相应的评价模型。
Abstract
Up-conversion board fitted on the lens could enhance the efficiency of CCD acquisition for low-frequency narrow-pulse laser spot because it is capable of changing infrared light into visible light. The up-conversion board made by traditional craft causes internal diffuse reflection and partial saturation effect which leads to the distortion of laser spot shape and intensity distribution. We put forward a new craft called lattice up-conversion board technique, and designed an experiment to compare the photographs acquired by the two crafts. The experimental results show that the lattice up-conversion board has better acquisition on low-frequency narrow- pulse laser spot. In order to evaluate the photographs of the laser spot acquired by lattice up-conversion board, a corresponding model is established.
陈志斌, 刘羽翔, 薛明晰, 侯章亚, 刘宝华. 点阵式上转换板在激光光斑采集中的应用研究[J]. 应用光学, 2011, 32(6): 1139. CHEN Zhi-bin, LIU Yu-xiang, XUE Ming-xi, HOU Zhang-ya, LIU Bao-hua. Laser spot acquisition by lattice up-conversion board[J]. Journal of Applied Optics, 2011, 32(6): 1139.