Multidither Adaptive Algorithms
Abstract
The use of Zernike-polynomial modal-control coherent optical adaptive techniques (COAT) in a multidither adaptive optical system has been studied analytically. The studies have defined those modes which will be implemented into an experimental COAT system for studying thermal blooming compensation. No apparent advantage in degree of phase correction has been established for modal versus zonal multidither control. A 37-element, all-beryllium, deformable mirror has been constructed. Preliminary tests show a surface deformation sensitivity of 0.28 microns/150 V and a usable frequency response to 30 kHz. Corrected irradiance-tailoring results reaffirm an earlier conclusion that thermal blooming is best minimized by making the transmitter aperture as large as possible and the irradiance distribution as uniform as possible.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1976
- Accession Number
- ADA344816
Entities
People
- Chia-Yi Yeh
- J. E. Pearson
- M. L. Minden
- S. Hanson
Organizations
- HRL Laboratories