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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 21 — Jul. 20, 2010
  • pp: 4108–4112

Design and fabrication of a polarization-independent wideband transmission fused-silica grating

Hongchao Cao, Changhe Zhou, Jijun Feng, Peng Lu, and Jianyong Ma  »View Author Affiliations


Applied Optics, Vol. 49, Issue 21, pp. 4108-4112 (2010)
http://dx.doi.org/10.1364/AO.49.004108


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Abstract

A fused-silica polarization-independent wideband transmission grating used in the 1 st order (Littrow mounting) for chirped-pulse-amplification, high-power lasers is designed and manufactured. An approximate grating profile can be obtained by using the simplified modal method with consideration for the corresponding accumulated phase difference of two excited propagating grating modes. An exact grating profile is optimized by using the rigorous coupled-wave analysis. With the optimized profile parameters, the gratings can theoretically exhibit diffraction efficiencies of greater than 97% at a wavelength of 800 nm for both of TE- and TM-polarized waves. Diffraction efficiencies of greater than 92% can be obtained in a 100 nm bandwidth (from 750 to 850 nm ) for both TE- and TM-polarized waves. Holographic recording technology and inductively coupled plasma etching are used to manufacture the fused-silica grating. Experimental results agree well with the theoretical values.

© 2010 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: April 7, 2010
Manuscript Accepted: June 18, 2010
Published: July 19, 2010

Citation
Hongchao Cao, Changhe Zhou, Jijun Feng, Peng Lu, and Jianyong Ma, "Design and fabrication of a polarization-independent wideband transmission fused-silica grating," Appl. Opt. 49, 4108-4112 (2010)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-49-21-4108

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