A method is presented to detect entire beam path aberrations of many laser systems, especially the SG-III inertial confinement fusion (ICF) laser system, which is under construction in China. Instead of a Hartman–Shack (HS) sensor, a CCD will be introduced into the target chamber of the ICF laser system. The HS sensor and the CCD could record the near-field wavefront distributions and the intensity signals of their corresponding focal spots, respectively. An amendatory phase-retrieval method is introduced to reconstruct the aberrations of the entire beam path from near-field wavefront distributions and their corresponding focal spots intensity. Principle experimental results indicate that the aberrations of the entire beam path of a laser system can be precisely detected based on this method.
© 2009 Optical Society of America
Lasers and Laser Optics
Original Manuscript: November 4, 2008
Revised Manuscript: December 28, 2008
Manuscript Accepted: January 2, 2009
Published: February 25, 2009
Ping Yang, Mingwu Ao, Bing Xu, and Xiao Yuan, "Way of detecting entire beam path aberrations of laser systems based on a phase-retrieval method," Appl. Opt. 48, 1402-1407 (2009)