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Optical Engineering

Wavelength-dependent characteristics of a telescope system with diffractive wavefront compensation
Author(s): Mark T. Gruneisen; Raymond C. Dymale; James R. Rotgé; Lewis F. DeSandre; Donald L. Lubin
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Paper Abstract

Diffractive wavefront control with programmable optically efficient modulo λ gratings was previously demonstrated as a means of extending the capabilities of a telescope system by compensating large aberrations associated with variations in object range and field angle within the telescope's field of regard. Inherent in diffraction phenomenon, however, are wavelength dependences that impose limitations on operating spectral bandwidths. This paper builds on past work integrating a programmable diffractive element of large pixel count with a telescope system. We present a theoretical evaluation of the wavelength-dependent performance characteristics of a modulo λ diffractive aberration compensator and experimental demonstrations of wavelength-tunable and extended spectral bandwidth operation. Near-diffraction-limited-resolution imaging is demonstrated within the spectral operating limits imposed by diffraction theory.

Paper Details

Date Published: 1 June 2005
PDF: 8 pages
Opt. Eng. 44(6) 068002 doi: 10.1117/1.1922287
Published in: Optical Engineering Volume 44, Issue 6
Show Author Affiliations
Mark T. Gruneisen, Air Force Research Lab. (United States)
Raymond C. Dymale, The Boeing Co. (United States)
James R. Rotgé, The Boeing Co. (United States)
Lewis F. DeSandre, Air Force Research Lab. (United States)
Donald L. Lubin, The Boeing Co. (United States)

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