摘要
为了提高光束质量和能量集中度,在SILEX-I超强超短脉冲钛宝石激光装置上进行了自适应光学波前校正系统实验研究,研究了波前校正系统对波前畸变、远场焦斑及能量集中度的改善情况。该系统基于相位共轭原理,主要由哈特曼波前传感器、变形镜、电控单元及控制软件等组成。实验结果表明:进行波前校正后,波前峰谷值从1.885μm下降到0.438μm,均方根值从0.379μm下降到0.052μm;远场焦斑有明显改善;超过峰值通量1/e2的区域的能量与总能量之比为72.4%。
To improve beam quality and focusability performance, an adaptive optical system, which is based on the phase-conjugated principle and consists of Hartmann-Shack sensor, deformable mirror, control unit and software, was installed in the SILEX I laser facility to correct its wavefront aberrations. The wavefront data and far-field focal spots were measured and ana- lyzed. The results show that, the peak valley value of the wavefront decreases from 1. 885 μm to 0. 438 μm and the root mean square value reduces from 0. 379 μm to 0. 052 μm with this adaptive optical system. In addition, the far-field focal spot is im- proved and the energy in the region where the intensity of each point is greater than 1/e^2 of the laser beam peak intensity is 72.4% of the total energy after the wavefront aberrations are corrected.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2010年第7期1433-1435,共3页
High Power Laser and Particle Beams
基金
国家高技术发展计划项目
关键词
激光技术
波前校正
自适应光学系统
超短脉冲激光装置
光束质量
laser technology
wavefront correction
adaptive optical system
ultra short pulse laser facility
beam quality
作者简介
谢娜（1976-），女，硕士，主要从事高功率固体激光技术研究；Ha_xie@126．com
