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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 47, Iss. 1 — Jan. 1, 2008
  • pp: 30–37

Analysis and fabrication of hybrid metal-dielectric omnidirectional Bragg reflectors

Nakeeran Ponnampalam and Ray G. DeCorby  »View Author Affiliations


Applied Optics, Vol. 47, Issue 1, pp. 30-37 (2008)
http://dx.doi.org/10.1364/AO.47.000030


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Abstract

We describe chalcogenide glass and polymer based Bragg reflectors with a metallic underlayer and use a transfer matrix model to analyze their performance. The angle-averaged reflectance of a hybrid mirror approaches unity for only a few periods and is much higher than that for a nonmetallized Bragg reflector or for the metallic layer alone. For an angle-averaged reflectance greater than 0.99, the addition of a metallic underlayer enables nearly a tripling of the omnidirectional bandwidth (from 110 to 305   nm ) concurrent with a significant reduction in the number of required periods (from 10.5 to 4.5). Hybrid mirrors of 4.5 periods, with a 50   nm Au underlayer and overall thickness of 2   μm , were fabricated atop silicon substrates and characterized. They exhibit an omnidirectional stop band in the 1450 1750   nm wavelength range, in good agreement with theoretical predictions.

© 2008 Optical Society of America

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(160.2750) Materials : Glass and other amorphous materials
(230.4170) Optical devices : Multilayers

ToC Category:
Integrated Optics

History
Original Manuscript: July 19, 2007
Manuscript Accepted: October 15, 2007
Published: December 20, 2007

Citation
Nakeeran Ponnampalam and Ray G. DeCorby, "Analysis and fabrication of hybrid metal-dielectric omnidirectional Bragg reflectors," Appl. Opt. 47, 30-37 (2008)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-47-1-30

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