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Applied Optics

Applied Optics


  • Vol. 37, Iss. 20 — Jul. 10, 1998
  • pp: 4366–4373

White-light-modified Talbot array illuminator with a variable density of light spots

Enrique Tajahuerce, Elvira Bonet, Pedro Andrés, Carlos J. Zapata-Rodríguez, and Vicent Climent  »View Author Affiliations

Applied Optics, Vol. 37, Issue 20, pp. 4366-4373 (1998)

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A flexible array illuminator, comprising only two conventional optical elements, with a variable density of bright white-light spots is presented. The key to our method is to obtain with a single diffractive lens an achromatic version of different fractional Talbot images, produced by free-space propagation, of the amplitude distribution at the back focal plane of a periodic refractive microlens array under a broadband point-source illumination. Some experimental results of our optical procedure are also shown.

© 1998 Optical Society of America

OCIS Codes
(050.1970) Diffraction and gratings : Diffractive optics
(070.2580) Fourier optics and signal processing : Paraxial wave optics
(070.2590) Fourier optics and signal processing : ABCD transforms
(070.6760) Fourier optics and signal processing : Talbot and self-imaging effects
(230.3990) Optical devices : Micro-optical devices

Original Manuscript: October 7, 1997
Revised Manuscript: February 25, 1998
Published: July 10, 1998

Enrique Tajahuerce, Elvira Bonet, Pedro Andrés, Carlos J. Zapata-Rodríguez, and Vicent Climent, "White-light-modified Talbot array illuminator with a variable density of light spots," Appl. Opt. 37, 4366-4373 (1998)

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