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Vacuum-ultraviolet spectral-irradiance calibrations: method and applications
W R Ott1, J M Bridges, J Z Klose
1National Bureau of Standards, Washington, DC 20234, USA.
Optics Letters
|August 21, 2009
Summary
This study introduces a new method for measuring spectral irradiance in the vacuum ultraviolet region. The technique achieves high accuracy, with uncertainties below 10% for various light sources.
Area of Science:
- Physics
- Optical Engineering
- Metrology
Background:
- Accurate spectral irradiance measurements are crucial for various scientific and industrial applications.
- Traditional methods for vacuum ultraviolet (VUV) spectral irradiance determination face challenges in precision and standardization.
Purpose of the Study:
- To present a novel method for determining spectral irradiance in the VUV range.
- To establish a reliable measurement technique using advanced spectral radiance standards.
Main Methods:
- The method utilizes recently developed spectral radiance standards for calibration.
- Measurements were performed in the wavelength range of 138 to 310 nm.
- Absolute spectral irradiance scales were established for different radiation sources.
Main Results:
- The developed method successfully determined spectral irradiance in the VUV spectrum.
- Spectral irradiances of multiple light sources were measured on an absolute scale.
- Estimated uncertainties for the measurements were less than 10%.
Conclusions:
- The new method provides a precise and accurate way to measure VUV spectral irradiance.
- The use of spectral radiance standards enhances the reliability of these measurements.
- This advancement supports improved characterization of radiation sources in the VUV region.
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