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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 22 — Oct. 29, 2007
  • pp: 14573–14579

Microlens diffusers for efficient laser speckle generation

Alfred D. Ducharme  »View Author Affiliations

Optics Express, Vol. 15, Issue 22, pp. 14573-14579 (2007)

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Laser Speckle is the optical phenomena resulting from the random interference of coherent light. This phenomenon can be utilized to measure the Modulation Transfer Function (MTF) of detector arrays. Common devices used for speckle generation, such as integrating spheres and ground glass, suffer from low efficiencies less than 20%. Microlens diffusers are shown to be more efficient alternatives for speckle generation. An analysis of the statistical behavior of microlens diffusers is presented with emphasis on their application to MTF testing of detector arrays in the visible spectrum.

© 2007 Optical Society of America

OCIS Codes
(030.6140) Coherence and statistical optics : Speckle
(110.4100) Imaging systems : Modulation transfer function

ToC Category:
Coherence and Statistical Optics

Original Manuscript: July 3, 2007
Revised Manuscript: August 13, 2007
Manuscript Accepted: August 17, 2007
Published: October 19, 2007

Alfred D. Ducharme, "Microlens diffusers for efficient laser speckle generation," Opt. Express 15, 14573-14579 (2007)

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