Wavelength-agile telescope system with diffractive wavefront control and acousto-optic spectral filter

Mark T. Gruneisen; Raymond C. Dymale; James R. Rotge; Donald L. Lubin; David G. Voelz; Melinda Deramo

doi:10.1117/12.561732

12 October 2004 Wavelength-agile telescope system with diffractive wavefront control and acousto-optic spectral filter

Mark T. Gruneisen, Raymond C. Dymale, James R. Rotge, Donald L. Lubin, David G. Voelz, Melinda Deramo

Proceedings Volume 5553, Advanced Wavefront Control: Methods, Devices, and Applications II; (2004) https://doi.org/10.1117/12.561732
Event: Optical Science and Technology, the SPIE 49th Annual Meeting, 2004, Denver, Colorado, United States

Abstract

Programmable diffractive optics (PDO) based on liquid-crystal (LC) technology has been demonstrated as a wavelength-agile means of compensating large aberrations over limited instantaneous spectral bandwidths. Acousto-optic tunable filters (AOTF) based on acousto-optic Bragg diffraction have been demonstrated as wavelength-agile means for selecting narrow spectral bands from white light with high rejection ratios. These technologies are integrated into a telescope system that includes a conventional primary mirror utilized off axis with more than 40 waves of aberration to view a white-light illuminated object bar chart. A high-resolution LC PDO, situated in a pupil plane, compensates for the large primary mirror aberration. The AOTF, operating in an image plane, rejects light outside a 2 nm spectral band centered about the wavelength at which the modulo-lambda phase profile of the PDO is defined. Wavelength-agile operation is achieved by synchronously tuning the PDO and AOTF over a 100nm spectral range. Near-diffraction-limited image quality is demonstrated.

Citation Download Citation

Mark T. Gruneisen, Raymond C. Dymale, James R. Rotge, Donald L. Lubin, David G. Voelz, and Melinda Deramo "Wavelength-agile telescope system with diffractive wavefront control and acousto-optic spectral filter", Proc. SPIE 5553, Advanced Wavefront Control: Methods, Devices, and Applications II, (12 October 2004); https://doi.org/10.1117/12.561732

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