
Proceedings Paper
Compensation of large-diameter optical system aberrations with spatial light modulators and deformable mirrorsFormat | Member Price | Non-Member Price |
---|---|---|
$14.40 | $18.00 |
![]() |
GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. | Check Access |
Paper Abstract
Compensation of slowly varying wavefront aberrations of low-cost meter-scale optical communication receiver mirror
systems is reported. Our goal is to reduce the surface wavefront error of a low-cost large aperture telescope mirror from
multiple waves to about 1-wave or less peak-to-valley (P-V). Both spatial light modulators and monolithic deformable
mirrors are applied in our active optical compensation systems. Spatial light modulators with only one wave stroke can
compensate for aberrations of over 10-waves P-V by using 2π phase wraps, while deformable mirrors are limited to 10-
wave aberrations (P-V), due to stroke limitations of commercially available systems. We demonstrate aberration
compensations of a low-cost 0.6-m diameter mirror using a deformable mirror and a 0.3-m diameter telescope using a
spatial light modulator. Upon aberration compensation, image quality is recovered close to the original, with the
residual distortion limited by the diffraction efficiency. The laser beam spot size is reduced by a factor of four, and the
measured received signal level is increased ten-fold.
Paper Details
Date Published: 24 February 2009
PDF: 7 pages
Proc. SPIE 7199, Free-Space Laser Communication Technologies XXI, 71990D (24 February 2009); doi: 10.1117/12.811894
Published in SPIE Proceedings Vol. 7199:
Free-Space Laser Communication Technologies XXI
Hamid Hemmati, Editor(s)
PDF: 7 pages
Proc. SPIE 7199, Free-Space Laser Communication Technologies XXI, 71990D (24 February 2009); doi: 10.1117/12.811894
Show Author Affiliations
Hamid Hemmati, Jet Propulsion Lab. (United States)
Yijiang Chen, Jet Propulsion Lab. (United States)
Published in SPIE Proceedings Vol. 7199:
Free-Space Laser Communication Technologies XXI
Hamid Hemmati, Editor(s)
© SPIE. Terms of Use
