用于紫外倍频的CLBO晶体最佳切割方式研究

李修; 陈秀艳; 李路海

光电技术应用, 2013, 28 (4): 30, 网络出版: 2013-07-29

用于紫外倍频的CLBO晶体最佳切割方式研究

Research on Optimal Cutting Method of CLBO Crystal for UV Frequency Multiplication

论文大纲

李修 ¹陈秀艳 ²李路海 ¹

作者单位

¹ 北京印刷学院, 北京市印刷电子工程技术研究中心印刷与包装工程学院, 北京 102600

² 沈阳师范大学物理科学与技术学院, 辽宁沈阳 110034

紫外倍频切割方式偏振匹配减反射 o光 e光布儒斯特角 UV frequency multiplication cutting mode ploarization matching antireflection o light e light Bruset angle

摘要

研究了不同切割方式下 CLBO晶体四倍频光反射损失情况, 同时给出了激光倍频晶体实现减反射的优化布氏切割方法。对于非线性晶体来说, 适用于激光晶体的布氏切割方法已经不能达到减反射的目的, 这是由于光通过激光晶体后没有新频率产生, 不改变光的偏振状态, 而经过非线性晶体后却有新频率的激光产生, 而这种新产生频率的振动状态与入射光的振动状态总不相同, 这是由相位匹配条件和偏振匹配条件共同决定的, 因而以布儒斯特角将两通光面平行切割的方法不再适合于此类晶体中。通过分析还得出, 采取两通光面以互相垂直的布氏角切割晶体, 可以达到对紫外光减反射的目的。

Abstract

Losses of light reflection of cesium lithium borate (CLBO) crystal with four frequency muliplication at different cutting modes is researched. Optimal Bruset cutting method of antirefelction implemented by laser multiplication frequency crystal is given. For nonlinear crystal, antireflection effect can not be got by the method which is suitable to laser crystal. The reason is that new frequency is not produced when light pass through the laser crystal and ploariztion states of the light are not changed. But new frequency is produced when light pass through nonlinear crystal. The vibration states of new frequency are always different from those of incident light. It is determined by matching conditions of phase and polariztion together. So the method of two pass light surface cutting in parallel at Bruset angle is not suitable to the crystal any more. By analysis, if the crystal is cut by two pass light surface at Bruset angle perpendicular each other, UV light antireflection effect can be got.

参考文献

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李修, 陈秀艳, 李路海. 用于紫外倍频的CLBO晶体最佳切割方式研究[J]. 光电技术应用, 2013, 28(4): 30. LI Xiu, CHEN Xiu-yan, LI Lu-hai. Research on Optimal Cutting Method of CLBO Crystal for UV Frequency Multiplication[J]. Electro-Optic Technology Application, 2013, 28(4): 30.

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