Model of small-scale self-focusing and spatial noise in high power laser driver  

作　　者：胡巍 傅喜泉 喻松 郭弘 

出　　处：《Science China(Technological Sciences)》2002年第4期373-382,共10页中国科学（技术科学英文版）

基　　金：This work is partially supported by the Key Project of the National Natural Science Foundation of China (Grant No. 69789801) the Team Project of Natural Science Foundation of Guangdong Province (Grant No. 20003061) the Funds of National Hi-Tech Committee

摘　　要：A linearization model was used to analyze the laser beam propagation in a high power laser driver and the influence of the small-scale self-focusing and spatial phase noise on beam quality in disk amplifiers. The quantitative relations between intensities of spatial phase noise, B-integral, and beam intensity contrast in near field are given explicitly. A spectrum specification of phase noise has been obtained by setting a limit to the contrast of an output beam.A linearization model was used to analyze the laser beam propagation in a high power laser driver and the influence of the small-scale self-focusing and spatial phase noise on beam quality in disk amplifiers. The quantitative relations between intensities of spatial phase noise, B-integral, and beam intensity contrast in near field are given explicitly. A spectrum specification of phase noise has been obtained by setting a limit to the contrast of an output beam.

关 键 词：SMALL-SCALE self-focusing  beam quality  MODULATION contrast  phase noise  B-integral. 

分 类 号：TN244[电子电信—物理电子学]