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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 31 — Nov. 1, 2010
  • pp: 5983–5988

Ultralow reflectance metal surfaces by ultrafast laser texturing

Vikram V. Iyengar, Barada K. Nayak, and Mool C. Gupta  »View Author Affiliations


Applied Optics, Vol. 49, Issue 31, pp. 5983-5988 (2010)
http://dx.doi.org/10.1364/AO.49.005983


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Abstract

We report the fabrication of textured metal surfaces by ultrafast laser processing and its optical property characterization by measurement of reflection and scattering as a function of angle and wavelength. The ultrafast laser textured metal surface reflection combined with scattering can be reduced to low values of 3 % over a broad spectral and angular range. Furthermore, it is shown that surface optical reflection and scattering can be varied by parameters like laser fluence, number of laser pulses, and coating the textured surfaces with suitable absorbers. It is also shown that ultrafast laser textured metal surfaces can have low surface reflection and scattering properties even at high temperatures ( 500 ° C ) of operation.

© 2010 Optical Society of America

OCIS Codes
(220.0220) Optical design and fabrication : Optical design and fabrication
(230.0230) Optical devices : Optical devices
(240.0240) Optics at surfaces : Optics at surfaces
(290.0290) Scattering : Scattering
(350.3390) Other areas of optics : Laser materials processing

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: July 20, 2010
Manuscript Accepted: September 20, 2010
Published: October 21, 2010

Citation
Vikram V. Iyengar, Barada K. Nayak, and Mool C. Gupta, "Ultralow reflectance metal surfaces by ultrafast laser texturing," Appl. Opt. 49, 5983-5988 (2010)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-49-31-5983

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