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NIST Authors in Bold
|Author(s):||John H. Lehman;|
|Title:||Improved Thermal Detector Coatings for Laser Radiometry at NIST|
|Published:||February 27, 2006|
|Abstract:||Nearly all of the radiometric standards for laser power and energy measurements at NIST and elsewhere in the world are based on thermal detectors. These detectors usually rely on a thermal absorber coating to enhance the detector responsivity. Ideally the composite detector and coating has low thermal mass (not exceeding that of the detector material) and high absorption efficiency (> 99 %) over a broad range of wavelengths (0.2 'm to 20 'm). We present investigations of the optical absorption and thermal efficiency of advanced coatings based on carbon nanotubes (CNTs). We present a summary of published results and opportunities for future research directed toward developing radiometric standards that are suited to ever-higher power and shorter (that is, ultraviolet) wavelengths.|
|Conference:||MSC 2006 "The Science, Technology, and Control of Measurements"|
|Dates:||February 27-March 3, 2006|
|Keywords:||carbon nanotubes,laser radiometry,optical detectors,thermal detectors|