1 September 2005 Reduction of Zernike wavefront errors using a micromirror array
Author Affiliations +
Optical Engineering, 44(9), 098001 (2005). doi:10.1117/1.2048367
Abstract
Arrays of micromirrors are used to correct residual wavefront aberrations in optical systems. Each micromirror typically has either one or three actuators so it can locally correct either the piston error in the wavefront, or the piston error plus the tip and tilt errors. An array of 1000 piston-only micromirrors is compared with an array of 333 piston-tip-tilt micromirrors with the same number of actuators. The piston-tip-tilt micromirror arrays are better in all comparisons. They reduce defocus and astigmatism by 300×versus 30× for piston-only (Zernike terms Z4, Z5, and Z6). The wavefront error due to third-order spherical (Z9) is reduced by 33×versus 6×, and the fifth-order spherical (Z16) is reduced by 6×versus 2×. The micromirror array pattern is also studied. Hexagonal arrays reduce the aberrations roughly 10% more than do square arrays.
William C. Sweatt, "Reduction of Zernike wavefront errors using a micromirror array," Optical Engineering 44(9), 098001 (1 September 2005). http://dx.doi.org/10.1117/1.2048367
JOURNAL ARTICLE
6 PAGES


SHARE
KEYWORDS
Micromirrors

Received signal strength

Wavefronts

Monochromatic aberrations

Spherical lenses

Mirrors

Actuators

RELATED CONTENT

Design and testing of a one meter membrane mirror with...
Proceedings of SPIE (August 18 2005)
Kinetics of XeF lasers
Proceedings of SPIE (June 29 1998)
Revisiting parallel catadioptric goniophotometers
Proceedings of SPIE (May 13 2013)
Optical System Design for the WAMDII Instrument
Proceedings of SPIE (October 31 1986)

Back to Top