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Applied Optics

Applied Optics


  • Vol. 43, Iss. 6 — Feb. 20, 2004
  • pp: 1255–1260

Telecentric confocal optics for aberration correction of acousto-optic tunable filters

Dennis R. Suhre, Louis J. Denes, and Neelam Gupta  »View Author Affiliations

Applied Optics, Vol. 43, Issue 6, pp. 1255-1260 (2004)

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A telecentric confocal optical arrangement is presented that greatly reduces the diffraction aberrations of the acousto-optic tunable filter (AOTF). Analytical expressions for the aberrations were identified based on the fundamental properties of Bragg diffraction, and additional aberrations due to focusing through the AOTF were also included. The analysis was verified by use of a geometrical ray trace optical code, and an experimental AOTF system was analyzed. Considerable improvement in the potential spatial resolution is predicted with confocal optics, which could accommodate large pixel-limited image fields of greater than 106 pixels. When the image quality of the experimental system was assessed, the resolution was found to be improved by the confocal optics and was diffraction limited. Higher resolution could have been obtained with the use of larger optics to increase the throughput before being limited by the aberrations.

© 2004 Optical Society of America

OCIS Codes
(080.2740) Geometric optics : Geometric optical design
(120.4570) Instrumentation, measurement, and metrology : Optical design of instruments
(220.1000) Optical design and fabrication : Aberration compensation
(230.1040) Optical devices : Acousto-optical devices

Original Manuscript: August 28, 2003
Revised Manuscript: October 29, 2003
Published: February 20, 2004

Dennis R. Suhre, Louis J. Denes, and Neelam Gupta, "Telecentric confocal optics for aberration correction of acousto-optic tunable filters," Appl. Opt. 43, 1255-1260 (2004)

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