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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 53, Iss. 13 — May. 1, 2014
  • pp: 2802–2805

High-efficiency fused-silica reflection grism

Hongchao Cao, Changhe Zhou, Jianyong Ma, Jun Wu, and Shubin Li  »View Author Affiliations


Applied Optics, Vol. 53, Issue 13, pp. 2802-2805 (2014)
http://dx.doi.org/10.1364/AO.53.002802


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Abstract

A fused-silica reflection grism (combination of grating and prism) based on the phenomenon of total internal reflection (TIR), and used in the 1st order, is designed and fabricated. The grism is etched directly into the fused-silica prism, which greatly facilitates the use of the TIR grating as no other angle coupling devices are involved. The grating profile is optimized by the use of the rigorous coupled-wave analysis method. Diffraction efficiency of larger than 99% at a wavelength of 980 nm for TM-polarized waves can be theoretically obtained. Two-beam interference lithography and inductively coupled plasma etching techniques are used to manufacture such grism. Diffraction efficiencies of larger than 95% are experimentally demonstrated.

© 2014 Optical Society of America

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(060.4510) Fiber optics and optical communications : Optical communications
(230.1360) Optical devices : Beam splitters
(050.6624) Diffraction and gratings : Subwavelength structures

ToC Category:
Diffraction and Gratings

History
Original Manuscript: January 14, 2014
Revised Manuscript: March 20, 2014
Manuscript Accepted: March 26, 2014
Published: April 24, 2014

Citation
Hongchao Cao, Changhe Zhou, Jianyong Ma, Jun Wu, and Shubin Li, "High-efficiency fused-silica reflection grism," Appl. Opt. 53, 2802-2805 (2014)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-53-13-2802

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