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Effects of optical paramerters on the coherent combination of laser array in the far field
Author(s): 
Pages: 256-259
Year: Issue:  2
Journal: Optical Technique

Keyword:  Fourier-opticscoherent combinationoptical paramertersfar field characteristic;
Abstract: 利用傅里叶光学方法,获得了相干合束远场光强的解析表达式,讨论了相位、振幅和发光单元数目等光学参数对远场光束质量的影响.研究结果表明:随着参与合束的发光单元数目的增加,尖峰变锐;同相模的光能集中在更小的立体角内,使得相干合束的亮度增加;异相模的光束能量较为分散,其峰值光强有所降低;随着振幅比β的减少,相干合束远场光强的峰值相对变化率增加,远场光强分布出现了本底现象,远场干涉条纹对比度降低.
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