Band-limited wavefront reconstruction with unity frequency response from Shack-Hartmann slopes measurements.
The analytic frequency responses of the traditional wavefront reconstructors of Hudgin, Fried, and Southwell are presented, which exhibit amplification or attenuation of the original signal at high spatial frequencies. To overcome this problem, a reconstructor with unity frequency response is developed based on a band-limited derivative calculation. The algorithm is both numerically and experimentally confirmed.
Bahk
Seung-Whan
SW
Laboratory for Laser Energetics, University of Rochester, Rochester, NY 14623, USA. sbah@lle.rochester.edu