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Applied Optics

Applied Optics


  • Vol. 41, Iss. 21 — Jul. 20, 2002
  • pp: 4411–4415

Enhanced signal coupling into periodically poled lithium niobate with microlens arrays

Christopher D. Brewer, Peter E. Powers, Sean M. Kirkpatrick, and Edward A. Watson  »View Author Affiliations

Applied Optics, Vol. 41, Issue 21, pp. 4411-4415 (2002)

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The return signal frequency of an eye-safe ladar system is upconverted from the infrared to the visible through sum-frequency generation by incorporation of periodically poled LiNbO3 into the receiver. A quantitative analysis of the angular acceptance and the quantum efficiency is then presented for a single macroscopic receiver optic and a multiaperture microlens array. Comparing both results, a 6× increase in the receiver field of regard and an 18% increase in beam coupling were realized for the microlens design over the macroscopic system.

© 2002 Optical Society of America

OCIS Codes
(070.4340) Fourier optics and signal processing : Nonlinear optical signal processing
(190.7220) Nonlinear optics : Upconversion
(280.3640) Remote sensing and sensors : Lidar

Original Manuscript: December 17, 2001
Revised Manuscript: April 25, 2002
Published: July 20, 2002

Christopher D. Brewer, Peter E. Powers, Sean M. Kirkpatrick, and Edward A. Watson, "Enhanced signal coupling into periodically poled lithium niobate with microlens arrays," Appl. Opt. 41, 4411-4415 (2002)

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