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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 32, Iss. 7 — Mar. 1, 1993
  • pp: 1154–1167

Antireflection structured surfaces for the infrared spectral region

Daniel H. Raguin and G. Michael Morris  »View Author Affiliations


Applied Optics, Vol. 32, Issue 7, pp. 1154-1167 (1993)
http://dx.doi.org/10.1364/AO.32.001154


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Abstract

Antireflection structured (ARS) surfaces on GaAs substrates for application with normally incident, randomly polarized, 10.6-μm-wavelength radiation are designed and analyzed. Both one-dimensional (1-D) and two-dimensional (2-D) multilevel profiles are examined with special attention given to multilevel approximations of 1-D triangular and 2-D pyramidal profiles. The 1-D profiles are designed by using second-order effective medium theory (EMT), as we have found zeroth-order EMT to be insufficient when ARS surfaces are designed for use with optically dense materials, e.g., most materials used in the infrared spectral region. We analyze both 1-D and 2-D profiles by using rigorous coupled-wave analysis and find that the more levels the profile contains, the better the ARS surface’s response to bias angles, wavelength detunings, and errors in etch depth. Although both 1-D and 2-D profiles can efficiently suppress reflections for unpolarized light, 2-D gratings are advantageous when randomly polarized light is of interest.

© 1993 Optical Society of America

History
Original Manuscript: March 12, 1992
Published: March 1, 1993

Citation
Daniel H. Raguin and G. Michael Morris, "Antireflection structured surfaces for the infrared spectral region," Appl. Opt. 32, 1154-1167 (1993)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-32-7-1154

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