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单轴晶体Ⅰ类匹配相位畸变光束二次谐波理论分析
Second-Harmonic Generation of Phase Aberrated Laser Beams by Type Ⅰ Phase Matching in Uniaxial Crystals
【摘要】 理论上研究了单轴晶体Ⅰ类匹配时相位畸变光束二次谐波的转换 ,其中考虑了衍射、离散效应 ,给出了相位畸变小信号解。在此基础上 ,以KDP晶体为例分析并给出了有像差高斯光束的转换效率随晶体长度的变化规律。对于任意光强分布和有任意相位畸变光束的谐波转换也是同样适用的
【Abstract】 The second-harmonic generation theory of phase aberrated laser beam in uniaxial crystals is discussed, in cluding the effects of diffraction and transverse walkoff. The solutions of the undepleted-pump approximation is given. The conversion efficiency of Gauss beams with aberrations is calculated according to the solutions. The solution can be used under any assumptions of intensity distribution and phase aberration of the pumping wave.
【关键词】 二次谐波；
相位畸变；
小信号解；
【Key words】 second-harmonic generation； phase aberration； solution under the small signal condition；
【Key words】 second-harmonic generation； phase aberration； solution under the small signal condition；
- 【文献出处】 光学学报 ,Acta Optica Sinica , 编辑部邮箱 ,2002年01期
- 【分类号】O734
- 【被引频次】2
- 【下载频次】98