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Proceedings Paper

Carbon-based coatings for thermal detectors: laser damage and thermal efficiency
Author(s): Krishna Ramadurai; Laurence Lewis; Chris Cromer; Roop L. Mahajan; Katherine E. Hurst; John H. Lehman
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Paper Abstract

The laser damage threshold and absorption efficiency of a variety of carbon based thermal coatings for laser power and energy measurements have been investigated. Carbon based paint, carbon fibers, as well as single wall carbon nanotubes (SWCNTs) and multiwalled carbon nanotubes (MWCNTs), were applied to a water cooled copper substrate. The heating of the water was measured to determine power absorbed by the sample during laser exposure. Before and after exposure to 10.6 µm laser radiation, optical and electron microscopy as well as Raman spectroscopy were employed to evaluate the coating topology and composition. These early measurement results demonstrate that a MWCNT coating has a damage threshold of approximately 1686 W/cm2, which is four times as large as that measured for SWCNTs and fifteen times greater than that of carbon based paint.

Paper Details

Date Published: 15 January 2007
PDF: 8 pages
Proc. SPIE 6403, Laser-Induced Damage in Optical Materials: 2006, 64031G (15 January 2007); doi: 10.1117/12.695849
Show Author Affiliations
Krishna Ramadurai, Univ. of Colorado (United States)
Laurence Lewis, National Institute of Standards and Technology (United States)
Chris Cromer, National Institute of Standards and Technology (United States)
Roop L. Mahajan, Virginia Polytechnic Institute and State Univ. (United States)
Katherine E. Hurst, National Institute of Standards and Technology (United States)
John H. Lehman, National Institute of Standards and Technology (United States)

Published in SPIE Proceedings Vol. 6403:
Laser-Induced Damage in Optical Materials: 2006
Gregory J. Exarhos; Arthur H. Guenther; Keith L. Lewis; Detlev Ristau; M. J. Soileau; Christopher J. Stolz, Editor(s)

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