Title :
THz laser power meter comparison
Author :
Lehman, John H. ; Dowell, Marla ; Popovic, Nina Basta ; Grossman, Erich N.
Author_Institution :
Nat. Inst. of Stand. & Technol., Boulder, CO, USA
Abstract :
We have undertaken a comparison of seven commercially available laser power meters along with a thermopile having an absorber made from vertically aligned carbon nanotubes. A molecular gas laser was femployed to generate 119 μm (2.5 THz) and 394 μm (0.76 THz) wavelength radiation. We describe the measurement procedure and apparatus for measuring the detector´s responsivity and spatial uniformity.
Keywords :
carbon nanotubes; power meters; spatial variables measurement; submillimetre wave measurement; thermopiles; THz laser power meter; absorber; detector responsivity measurement; frequency 0.76 THz; frequency 2.5 THz; measurement apparatus; measurement procedure; molecular gas laser; spatial uniformity measurement; thermopile; vertically aligned carbon nanotubes; wavelength 119 mum; wavelength 394 mum; Arrays; Carbon nanotubes; Detectors; Gas lasers; Measurement by laser beam; NIST; Wavelength measurement;
Conference_Titel :
Precision Electromagnetic Measurements (CPEM), 2012 Conference on
Conference_Location :
Washington, DC
Print_ISBN :
978-1-4673-0439-9
DOI :
10.1109/CPEM.2012.6250995
