Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Spectroradiometric Sources

Published

Author(s)

Howard W. Yoon, Charles E. Gibson

Abstract

rth climate modeling and global impacts of particles and gases in the atmosphere are some of the studies that benefit from the use of spectroradiometers calibrated for spectral irradiance. Spectral irradiance is the optical power incident per unit area of a surface per wavelength interval in typical units of W cm-2 nm-1.Calibrations of the spectroradiometers are performed using spectral irradiance standards traceable to the International System (generally referred to as SI, from the French Le Syst me International d'Unit s) of base units maintained at the National Measurement Institutes (NMI). In the United States the National Institute of Standards and Technology (NIST) is the NMI. NIST issues 1000 W (ANSI designation, FEL) quartz-tungsten halogen lamps as standards of spectral irradiance calibrated from 250 nm to 2400 nm at discrete wavelength intervals.
Citation
Optical Engineering Magazine

Keywords

absolute radiometry, radiometer, spectral irradiance, standard lamps

Citation

Yoon, H. and Gibson, C. (2008), Spectroradiometric Sources, Optical Engineering Magazine (Accessed June 10, 2023)
Created October 16, 2008