Guo JianzenG, Liu TieGen, WanG Zhenhua, et al. Method for lower order aberration correction based on beam shaping[J]. High Power Laser and Particle Beams, 2012, 24: 1797-1800. doi: 10.3788/HPLPB20122408.1797
Citation:
Guo JianzenG, Liu TieGen, WanG Zhenhua, et al. Method for lower order aberration correction based on beam shaping[J]. High Power Laser and Particle Beams, 2012, 24: 1797-1800. doi: 10.3788/HPLPB20122408.1797
Guo JianzenG, Liu TieGen, WanG Zhenhua, et al. Method for lower order aberration correction based on beam shaping[J]. High Power Laser and Particle Beams, 2012, 24: 1797-1800. doi: 10.3788/HPLPB20122408.1797
Citation:
Guo JianzenG, Liu TieGen, WanG Zhenhua, et al. Method for lower order aberration correction based on beam shaping[J]. High Power Laser and Particle Beams, 2012, 24: 1797-1800. doi: 10.3788/HPLPB20122408.1797
College of Precision Instrument and Optoelectronics Engineering,Tianjin University,Tianjin 300072,China; 2.The 718th Research Institute of CSIC,Handan 056027,China
To meet the requirements for far-field laser beam irradiation strength, and reduce the impact of thermal effect on the output beam performance, this paper introduces a lower order aberration correction method based on beam shaping. According to the beam wavefront distortion, the method dynamically adjusts the space between shaping mirrors to produce opposite aberrations to correct the aberrations of the first four orders, through the rapid action of the high-precision translation stage and the fast steering mirror, and then the output beam recovers and emits parallelly. The method significantly reduces the thermal drift and thermal distortion of the laser beam, and avoid the long-time continuous beam radiation while running. It features large correction range, control convenience and compact structure, and can greatly improve the quality of the laser output beam and the effect of the laser beam far-field.