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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 40, Iss. 13 — May. 1, 2001
  • pp: 2148–2158

Optical scattering from rough-rolled aluminum surfaces

Mats Rönnelid, Monika Adsten, Tomas Lindström, Per Nostell, and Ewa Wäckelgård  »View Author Affiliations


Applied Optics, Vol. 40, Issue 13, pp. 2148-2158 (2001)
http://dx.doi.org/10.1364/AO.40.002148


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Abstract

Bidirectional, angular resolved scatterometry was used to evaluate the feasibility of using rolled aluminum as reflectors in solar thermal collectors and solar cells. Two types of rolled aluminum with different surface roughnesses were investigated. The results show that the smoother of the two samples [rms height, (0.20 ± 0.02) µm] can be used as a nonimaging, concentrating reflector with moderate reflection losses compared with those of optically smooth aluminum reflectors. The sample with the rougher surface [rms height, (0.6 ± 0.1) µm] is not suitable as a concentrating element but can be used as planar reflectors. The orientation of the rolling grooves is then of importance for minimizing reflection losses in the system.

© 2001 Optical Society of America

OCIS Codes
(160.3900) Materials : Metals
(240.5770) Optics at surfaces : Roughness
(260.3910) Physical optics : Metal optics
(290.5820) Scattering : Scattering measurements
(290.5880) Scattering : Scattering, rough surfaces
(350.6050) Other areas of optics : Solar energy

History
Original Manuscript: June 25, 2000
Revised Manuscript: December 21, 2000
Published: May 1, 2001

Citation
Mats Rönnelid, Monika Adsten, Tomas Lindström, Per Nostell, and Ewa Wäckelgård, "Optical scattering from rough-rolled aluminum surfaces," Appl. Opt. 40, 2148-2158 (2001)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-40-13-2148

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