Chinese Optics Letters, 2012, 10 (8): 081402, Published Online: Apr. 18, 2012
Experimental research on application of Hartmann micro-lens array in coherent beam combination of two-dimensional laser array Download: 596次
Abstract
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.
Xiaohua Wang, Qiang Fu, Linhai Huang, Feng Shen, Changhui Rao. Experimental research on application of Hartmann micro-lens array in coherent beam combination of two-dimensional laser array[J]. Chinese Optics Letters, 2012, 10(8): 081402.