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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 41, Iss. 28 — Oct. 1, 2002
  • pp: 5872–5878

Long-term temporal stability of the National Institute of Standards and Technology spectral irradiance scale determined with absolute filter radiometers

Howard W. Yoon and Charles E. Gibson  »View Author Affiliations


Applied Optics, Vol. 41, Issue 28, pp. 5872-5878 (2002)
http://dx.doi.org/10.1364/AO.41.005872


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Abstract

The temporal stability of the National Institute of Standards and Technology (NIST) spectral irradiance scale as measured with broadband filter radiometers calibrated for absolute spectral irradiance responsivity is described. The working standard free-electron laser (FEL) lamps and the check standard FEL lamps have been monitored with radiometers in the ultraviolet and the visible wavelength regions. The measurements made with these two radiometers reveal that the NIST spectral irradiance scale as compared with an absolute thermodynamic scale has not changed by more than 1.5% in the visible from 1993 to 1999. Similar measurements in the ultraviolet reveal that the corresponding change is less than 1.5% from 1995 to 1999. Furthermore, a check of the spectral irradiance scale by six different filter radiometers calibrated for absolute spectral irradiance responsivity based on the high-accuracy cryogenic radiometer shows that the agreement between the present scale and the detector-based scale is better than 1.3% throughout the visible to the near-infrared wavelength region. These results validate the assigned spectral irradiance of the widely disseminated NIST or NIST-traceable standard sources.

© 2002 Optical Society of America

OCIS Codes
(120.3930) Instrumentation, measurement, and metrology : Metrological instrumentation
(120.3940) Instrumentation, measurement, and metrology : Metrology
(120.4800) Instrumentation, measurement, and metrology : Optical standards and testing
(120.5630) Instrumentation, measurement, and metrology : Radiometry

History
Original Manuscript: January 2, 2002
Revised Manuscript: May 30, 2002
Published: October 1, 2002

Citation
Howard W. Yoon and Charles E. Gibson, "Long-term temporal stability of the National Institute of Standards and Technology spectral irradiance scale determined with absolute filter radiometers," Appl. Opt. 41, 5872-5878 (2002)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-41-28-5872

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