| 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" |
| Location: |
Anaheim, CA |
| Dates: |
February 27-March 3, 2006 |
| Keywords: |
carbon nanotubes;laser radiometry;optical detectors;thermal detectors |
| Research Areas: |
Optoelectronics |
