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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)
http://dx.doi.org/10.1364/OE.15.014573


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Abstract

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

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

Citation
Alfred D. Ducharme, "Microlens diffusers for efficient laser speckle generation," Opt. Express 15, 14573-14579 (2007)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-15-22-14573


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References

  1. RPC Photonics, Engineered Diffusers and HiLAM diffusers, http://www.rpcphotonics.com>.
  2. A. Daniels, G. D. Boreman, A. D. Ducharme, and E. Sapir, "Random transparency targets for modulation transfer function measurement in the visible and infrared regions," Opt. Eng. 34, 860-868 (1995). [CrossRef]
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  6. A. M. Pozo and M. Rubiño, "Comparative analysis of techniques for measuring the modulation transfer functions of charge-coupled devices based on the generation of laser speckle," Appl. Opt. 44, 1543-1547 (2005). [CrossRef] [PubMed]
  7. G. Boreman, Y. Sun, and A. James, "Generation of laser speckle with an integrating sphere," Opt. Eng. 29, 339-342 (1990). [CrossRef]
  8. J. W. Goodman, Statistical Properties of Laser Speckle Patterns in Laser Speckle and Related Phenomena (Springer-Verlag, 1984), Chap. 2, pp. 15-19.
  9. J. W. Goodman, Statistical Properties of Laser Speckle Patterns in Laser Speckle and Related Phenomena (Springer-Verlag, 1984), Chap. 2, pp. 46-54.
  10. J. W. Goodman, Statistical Properties of Laser Speckle Patterns in Laser Speckle and Related Phenomena (Springer-Verlag, 1984), Chap. 2, p. 40.
  11. J. D. Gaskill, Linear Systems, Fourier Transforms, and Optics, (John Wiley & Sons, 1978), Chap. 3.

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