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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 40, Iss. 34 — Dec. 1, 2001
  • pp: 6260–6264

Reflectance and scattering properties of highly absorbing black appliqués over a broadband spectral region

Steven R. Meier  »View Author Affiliations


Applied Optics, Vol. 40, Issue 34, pp. 6260-6264 (2001)
http://dx.doi.org/10.1364/AO.40.006260


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Abstract

I present angle-dependent directional hemispherical reflectance (DHR) and bidirectional reflectance distribution function (BRDF) measurements of three highly absorbing black appliqués in the 250–2000-nm broadband spectral region. DHR measurements of Energy Science Laboratories, Inc. (ESLI), Rippey, and Rodel appliqués were obtained at incidence angles of 8°, 50°, and 70°. For an incidence angle of 8°, the ESLI appliqué exhibited the lowest DHR value of 0.3% across this entire spectral region, whereas the Rippey and Rodel had DHR values of 1.5% and 2.0–2.5%, respectively. In-plane BRDF measurements of the appliqués, obtained at a wavelength of 633 nm and incidence angle of 10°, yielded Lambertian profiles from -80° to +80° with values ranging from ∼10-3 sr-1 for the ESLI, 6 × 10-3 sr-1 for the Rippey, and 9 × 10-3 sr-1 for the Rodel appliqué. In addition, rms surface roughness and correlation lengths for the Rippey and the Rodel appliqués were determined. The in-plane BRDF data were used to estimate the reflected specular component from Beckmann’s scattering theory, and excellent agreement was found.

© 2001 Optical Society of America

OCIS Codes
(120.5700) Instrumentation, measurement, and metrology : Reflection
(120.5820) Instrumentation, measurement, and metrology : Scattering measurements
(160.4670) Materials : Optical materials
(160.4760) Materials : Optical properties
(290.5880) Scattering : Scattering, rough surfaces

History
Original Manuscript: June 22, 2001
Revised Manuscript: August 29, 2001
Published: December 1, 2001

Citation
Steven R. Meier, "Reflectance and scattering properties of highly absorbing black appliqués over a broadband spectral region," Appl. Opt. 40, 6260-6264 (2001)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-40-34-6260

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