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Proceedings Paper

Brighter incandescent light sources from the black metal
Author(s): Anatoliy Y. Vorobyev; Chunlei Guo
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Paper Abstract

In this work, by applying the femtosecond laser blackening technique directly to a tungsten incandescent lamp filament, we dramatically brighten the tungsten lamp and enhance its emission efficiency by 60%. This process in fact leads the tungsten incandescent light bulb to approach the 100% emission efficiency. A comparison study of emission and absorption for the structured metal surface shows that Kirchhoff's law is applicable for the black metal. More importantly, we demonstrate that we can even obtain partially polarized light as well as control the spectral range of the optimal light emission from the laser-blackened tungsten lamp.

Paper Details

Date Published: 25 February 2010
PDF: 8 pages
Proc. SPIE 7589, Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications X, 758916 (25 February 2010); doi: 10.1117/12.847901
Show Author Affiliations
Anatoliy Y. Vorobyev, The Institute of Optics, Univ. of Rochester (United States)
Chunlei Guo, The Institute of Optics, Univ. of Rochester (United States)


Published in SPIE Proceedings Vol. 7589:
Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications X
Alexander Heisterkamp; Joseph Neev; Stefan Nolte; Rick P. Trebino, Editor(s)

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