Optical power and transmittance measurements and their use in detector-based realization of the luminous intensity scale

Petri Kaerhae; Antti Lassila; Hanne Ludvigsen; Farshid Manoochehri; Heidi Fagerlund; Erkki Ikonen

doi:10.1117/12.208095

1 September 1995 Optical power and transmittance measurements and their use in detector-based realization of the luminous intensity scale

Petri Kaerhae, Antti Lassila, Hanne Ludvigsen, Farshid Manoochehri, Heidi Fagerlund, Erkki Ikonen

Author Affiliations +

Optical Engineering, Vol. 34, Issue 9, (September 1995). https://doi.org/10.1117/12.208095

Abstract

Responsivity calibrations of trap detectors with a cryogenic absolute radiometer and a power-stabilized 543.51 6-nm He-Ne laser are described. The trap detectors are used as transfer standards of optical power at visible wavelengths because they have a predictable spectral responsivity. New results on transmittance measurements of PRC Krochmann V(λ) filters are presented, especially the angle and temperature dependence of the transmittance. The characterized trap detector and the V(λ) filter are used for a novel realization of the SI base unit of luminous intensity, the candela. Test measurements indicate a good agreement with previous photometric scales.

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Petri Kaerhae, Antti Lassila, Hanne Ludvigsen, Farshid Manoochehri, Heidi Fagerlund, and Erkki Ikonen "Optical power and transmittance measurements and their use in detector-based realization of the luminous intensity scale," Optical Engineering 34(9), (1 September 1995). https://doi.org/10.1117/12.208095

Published: 1 September 1995

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