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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 13, Iss. 13 — Jun. 27, 2005
  • pp: 4843–4847

Dual beam generation at a ray caustic by a multiplexing computer-generated hologram

Peng Su, Josh Hudman, Jose M. Sasian, and William J. Dallas  »View Author Affiliations

Optics Express, Vol. 13, Issue 13, pp. 4843-4847 (2005)

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Computer generated holograms (CGHs) are used for testing aspherical surfaces. They are also used for certifying null lens systems that are in turn used to test large aspheric mirrors. We demonstrate that, in order to minimize size, a null-corrector-certifying CGH can be located at a ray caustic. This placement minimizes the required size of the CGH and so makes it possible to certify some null correctors that otherwise, due to current size limitations of high-precision CGHs, could not be certified. Fabrication limits of precision CGHs are in the size range of 200–250 mm and one part in 105 in feature placement. Our proof of principle involves a CGH that is about 20mm in diameter with a fabrication tolerance of one part in 104.

© 2005 Optical Society of America

OCIS Codes
(090.1760) Holography : Computer holography
(220.1250) Optical design and fabrication : Aspherics
(220.4840) Optical design and fabrication : Testing

ToC Category:
Research Papers

Original Manuscript: May 12, 2005
Revised Manuscript: June 8, 2005
Published: June 27, 2005

Peng Su, Josh Hudman, Jose Sasian, and William Dallas, "Dual beam generation at a ray caustic by a multiplexing computer-generated hologram," Opt. Express 13, 4843-4847 (2005)

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