强激光与粒子束2011，Vol.23Issue(1)：39-44,6.DOI:10.3788/HP1PB20112301.0039
激光相干合成中单元的相位和振幅波动对合成光束远场分布的影响
Effect of phase and amplitude fluctuation of single laser element on far field characteristics of coherently combined beam
摘要
Abstract
With Fourier optics, the general expression of far-field intensity of coherently combined beam has been derived,which is affected by single beam's phase and amplitude fluctuation due to jitters in the system.The analysis using one-dimensional laser array shows that, the intensity peak becomes sharper and the energy centers in a smaller angle as the number of combined beams increases.The maximum intensity of far field reduces due to the jitters and the background appears, deteriorating the symmetry and quality of far field.Therefore, the stochastic fluctuation of phase should be controlled within 3π/8 for single light source of the laser array; the more the beams are combined, the less the influence of the system jitters on far field characteristics is.关键词
傅里叶光学/相干合束/相位波动/振幅波动/远场特性Key words
Fourier optics/ coherent combination/ phase fluctuation/ swing fluctuation/ far field characteristics分类
数理科学引用本文复制引用
李松柏,陈建国,窦汝海,史晓刚..激光相干合成中单元的相位和振幅波动对合成光束远场分布的影响[J].强激光与粒子束,2011,23(1):39-44,6.基金项目
国家自然科学基金项目(60578013) （60578013）
重庆市教委科技基金项目(KJ091307) （KJ091307）
