Paper
15 January 2007 Carbon-based coatings for thermal detectors: laser damage and thermal efficiency
Krishna Ramadurai, Laurence Lewis, Chris Cromer, Roop L. Mahajan, Katherine E. Hurst, John H. Lehman
Author Affiliations +
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.
© (2007) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Krishna Ramadurai, Laurence Lewis, Chris Cromer, Roop L. Mahajan, Katherine E. Hurst, and John H. Lehman "Carbon-based coatings for thermal detectors: laser damage and thermal efficiency", Proc. SPIE 6403, Laser-Induced Damage in Optical Materials: 2006, 64031G (15 January 2007); https://doi.org/10.1117/12.695849
Advertisement
Advertisement
RIGHTS & PERMISSIONS
Get copyright permission  Get copyright permission on Copyright Marketplace
KEYWORDS
Carbon

Laser damage threshold

Optical coatings

Raman spectroscopy

Sensors

Absorption

Scanning electron microscopy

Back to Top