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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 38, Iss. 14 — May. 10, 1999
  • pp: 3019–3024

Holographic diffractive collimators based on recording with homocentric diverging beams for diode lasers

Miroslav Miler, Ivo Koudela, and Ivo Aubrecht  »View Author Affiliations


Applied Optics, Vol. 38, Issue 14, pp. 3019-3024 (1999)
http://dx.doi.org/10.1364/AO.38.003019


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Abstract

A single collimating transmission off-axis blazed surface-relief holographic diffractive element that corrects the ellipticity and the astigmatism of a diode-laser beam was designed. The procedure was applied to a hypothetical laser operating at a wavelength of 633 nm that possesses extremely large astigmatism and relatively small ellipticity together with small diverging angles of the laser beam. The element was recorded with only homocentric diverging beams that had pure spherical wave fronts. Because of the off-axis nature of the element, the aberration of asymmetry had to be corrected. The element was tested in a reciprocal way when the incident wave was a collimated He–Ne laser beam. A diffraction-limited beam was obtained that was as large as approximately half of the designed aperture.

© 1999 Optical Society of America

OCIS Codes
(050.1970) Diffraction and gratings : Diffractive optics
(090.2890) Holography : Holographic optical elements
(140.3300) Lasers and laser optics : Laser beam shaping

History
Original Manuscript: July 27, 1998
Revised Manuscript: December 7, 1998
Published: May 10, 1999

Citation
Miroslav Miler, Ivo Koudela, and Ivo Aubrecht, "Holographic diffractive collimators based on recording with homocentric diverging beams for diode lasers," Appl. Opt. 38, 3019-3024 (1999)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-38-14-3019

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