NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.
Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.
An official website of the United States government
Here’s how you know
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 Detector Measurements: Ultraviolet, Visible, and Near Infrared Detectors for Spectral Power
Published
Author(s)
Thomas C. Larason, Jeanne M. Houston
Abstract
The National Institute of Standards and Technology supplies calibrated photodiode standards and special tests of photodetectors for spectral radiant power responsivity from 200 nm to 1800 nm. The scale of spectral radiant power responsivity is based solely on detector measurements traceable to the NIST reference absolute cryogenic radiometer maintained by the National Institute of Standards and Technology. Silicon photodiode light trapping detectors are used to transfer the optical power unit from this cryogenic radiometer to monochromator based facilities where routine measurements are performed. A description of current measurement services is given along with the procedures, equipment, and techniques used to perform these calibrations. Detailed estimates and procedures for determining uncertainties of the reported values are also present
Larason, T.
and Houston, J.
(2008),
Spectroradiometric Detector Measurements: Ultraviolet, Visible, and Near Infrared Detectors for Spectral Power, Special Publication (NIST SP), National Institute of Standards and Technology, Gaithersburg, MD, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=841061
(Accessed October 9, 2025)