Carbon Based Coatings for Thermal Detectors: Laser Damage and Thermal Efficiency

Published

September 25, 2006

Author(s)

Krishna Ramadurai, Laura H. Lewis, Christopher L. Cromer, Roop Mahajan, Katie Hurst, John H. Lehman

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 multiwall 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 ??m 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 greater than that measured for SWCNTs and fifteen times greater than that of carbon based paint.

Proceedings Title

Annual Symposium on Optical Materials for High Power Lasers

Conference Dates

September 25-27, 2006

Conference Location

Boulder, CO

Conference Title

Boulder Damage Symposium XXXVIII

Pub Type

Conferences

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Keywords

carbon nanotubes, laser damage, Raman spectroscopy, thermal detector

Citation

Ramadurai, K. , Lewis, L. , Cromer, C. , Mahajan, R. , Hurst, K. and Lehman, J. (2006), Carbon Based Coatings for Thermal Detectors: Laser Damage and Thermal Efficiency, Annual Symposium on Optical Materials for High Power Lasers, Boulder, CO, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=32531 (Accessed February 7, 2025)