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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 18, Iss. 13 — Jul. 1, 1979
  • pp: 2152–2158

High efficiency multiple beam gratings

Wai-Hon Lee  »View Author Affiliations


Applied Optics, Vol. 18, Issue 13, pp. 2152-2158 (1979)
http://dx.doi.org/10.1364/AO.18.002152


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Abstract

Diffraction gratings are used in many optical systems as beam splitters. In these applications the diffraction grating must (1) have high diffraction efficiency and (2) produce uniform intensities in the central block of diffracted beams. High diffraction efficiency is attained by making the grating a phase grating. In this paper we discuss in some detail the use of pulse width modulation (PWM) and pulse position modulation (PPM) to create grating structures that produce uniform central diffracted beams. By using these modulation techniques and proper phase relief for the grating, the diffraction grating can have a diffraction efficiency of 70% or more. Some examples of multiple beam diffraction gratings produced by using PWM and PPM are shown.

© 1979 Optical Society of America

History
Original Manuscript: February 5, 1979
Published: July 1, 1979

Citation
Wai-Hon Lee, "High efficiency multiple beam gratings," Appl. Opt. 18, 2152-2158 (1979)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-18-13-2152

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