高强度三次谐波转换中位相扰动的变化  

Variation of phase perturbation in high power third harmonics conversion

作　　者：李强[1] 张彬[1] 粟敬钦[2] 马驰[2] 蔡邦维[1] 魏晓峰[2] 

机构地区：[1]四川大学电子信息学院,四川成都610064 [2]中国工程物理研究院激光聚变研究中心,四川绵阳621900

出　　处：《强激光与粒子束》2004年第3期313-316,共4页High Power Laser and Particle Beams

基　　金：国家863计划项目资助课题

摘　　要：　以I/II类角度失谐三倍频方案为例,详细讨论了在高强度三次谐波转换过程中入射基频光的位相扰动和振幅调制对三倍频光位相扰动的影响,定量分析了基频光和三倍频光的位相扰动之间的变化关系。模拟结果表明,三倍频光的位相扰动幅度近似为基频光的三倍;入射基频光的位相分布对三倍频光的影响比振幅调制的影响更加明显,但是当入射功率密度较大时,基频光的振幅调制对三倍频光位相分布的影响明显增大。In this paper, taking type I/II angle-detuning scheme as an example, the effect of phase perturbation and amplitude modulation of the high power incident fundamental field on phase perturbation of the tripling field has been discussed in details. The transformation relation between the phase perturbation of fundamental field and tripling field has been analyzed quantitatively. The results of simulation indicate that the amplitude of phase perturbation of the tripling field is about three times as that of the fundamental field. The effect of phase perturbation of the fundamental field on the phase distribution of the tripling field is much more important than that of the amplitude modulation. However, the effect of the amplitude modulation becomes more important as the power density of the fundamental field increases.

关 键 词：Ⅰ/Ⅱ角度失谐 振幅调制 位相扰动 三次谐波转换 

分 类 号：O437.1[机械工程—光学工程]