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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 36, Iss. 21 — Jul. 20, 1997
  • pp: 4993–4998

Apodizing holographic gratings for the modal control of semiconductor lasers

Jean-François Lepage, Reza Massudi, Geneviève Anctil, Sébastien Gilbert, Michel Piché, and Nathalie McCarthy  »View Author Affiliations


Applied Optics, Vol. 36, Issue 21, pp. 4993-4998 (1997)
http://dx.doi.org/10.1364/AO.36.004993


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Abstract

We first present the fabrication technique of apodizing holographic gratings. Gratings with a spatially variable reflectivity profile were obtained by the interference of two Gaussian beams on a glass plate covered with a photoresist. When the exposure time was short enough to avoid saturation of the photoresist, gratings with a quasi-Gaussian reflectivity profile for the beam reflected in the -1 order were produced; the reflectivity at the center could be as high as 71%, and the half-width of the reflectivity profile at the e-1 position could be as small as 180 µm. Apodizing gratings were used as the end mirror of the external cavity of a broad-area semiconductor laser. Single longitudinal- and lateral-mode operation was observed over the full range of allowed injection currents.

© 1997 Optical Society of America

History
Original Manuscript: October 7, 1996
Revised Manuscript: January 22, 1997
Published: July 20, 1997

Citation
Jean-François Lepage, Reza Massudi, Geneviève Anctil, Sébastien Gilbert, Michel Piché, and Nathalie McCarthy, "Apodizing holographic gratings for the modal control of semiconductor lasers," Appl. Opt. 36, 4993-4998 (1997)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-36-21-4993

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