Experimental research on application of Hartmann micro-lens array in coherent beam combination of two-dimensional laser array

• 来源期刊: 中国光学快报（英文版）
• 年，卷（期）: 2012,（8）
• 页码范围: 33-35
• 页数: 3页
• 语种: 英文
• DOI: 10.3788/COL201210.081402

摘要

We demonstrate experimentally the application of a phase error detection method in the coherent beam combination (CBC) of a laser array.The method is based on the Hartmann micro-lens array.Both the piston and tilt errors can be detected and corrected simultaneously by combining this method with adaptive optics-correcting technology.The far-field intensity pattern of the combined beam has high energy concentration and good beam quality.The power encircled in the main lobe of the far-field pattern is 41.3％,and the contrast of the pattern reaches 81.8％.Experimental results show the great potential of the Hartmann phasing method for use in the CBC of a large number of laser beams.