Coherent Beam Combination Using a General Model-Based Method
HUANG Lin-Hai1,2**
1The Key Lab on Adaptive Optics, Chinese Academy of Sciences, Chengdu 610209 2The Lab on Adaptive Optics, Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209
Abstract：Coherent beam combination techniques can increase the output laser power from a single gain medium. We demonstrate coherent beam combination using the general model-based wavefront error correction method. The experiments for wavefront error correction are performed by using a 7-segment deformable mirror. Both the general model-based method and the stochastic parallel gradient descent algorithm are used to correct the wavefront error generated by a turbulent simulator. The experimental results show that the residual error is obviously reduced in comparison with that by using the SPGD method.
2014, Vol. 31 
