Journal ArticleDOI
Characterization of Photodiodes in the UV and Visible Spectral Region Based on Cryogenic Radiometry
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TLDR
In this article, the Hamamatsu S1337 photodiode was found to be the best suited for use as a high accuracy transfer standard for both the visible and UV spectral regions.Abstract:
Different types of photodiode have been characterized with respect to uniformity, linearity, stability of responsivity and temperature coefficient at several wavelengths between 257 nm and 799 nm based on cryogenic radiometry and intensity stabilized lasers. The Hamamatsu S1337 photodiode was found to be the best suited for use as a high accuracy transfer standard for both the visible and UV spectral regions. For low-level radiant power measurement, this kind of photodiode can be calibrated via a cryogenic radiometer with a total uncertainty as low as ±0,02% in the visible and ±0,25% in the UV.read more
Citations
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Journal ArticleDOI
National Institute of Standards and Technology high-accuracy cryogenic radiometer
TL;DR: A high-accuracy cryogenic radiometer has been developed at the National Institute of Standards and Technology to serve as a primary standard for optical power measurements.
Journal ArticleDOI
Mean energy required to produce an electron-hole pair in silicon for photons of energies between 50 and 1500 eV
TL;DR: In this paper, the photon energy dependence of the mean energy required to produce an electron-hole pair in silicon for photons with energies between 50 and 1500 eV was determined from the spectral responsivity of selected silicon photodiodes.
Journal ArticleDOI
Realization of a scale of absolute spectral response using the National Institute of Standards and Technology high-accuracy cryogenic radiometer
TL;DR: Using the National Institute of Standards and Technology high-accuracy cryogenic radiometer (HACR), a scale of absolute spectral response between 406 and 920 nm is realized, and modeling of the quantum efficiency of these detectors yields their responsivity throughout this range with comparable accuracy.
Journal ArticleDOI
Accurate determination of the spectral responsivity of silicon trap detectors between 238 nm and 1015 nm using a laser-based cryogenic radiometer
TL;DR: In this article, the Physikalisch-Technische Bundesanstalt has further improved and extended its spectral responsivity scale based on the laser-operated radiation thermometry cryogenic radiometer.
Journal ArticleDOI
Synchrotron-radiation-operated cryogenic electrical-substitution radiometer as the high-accuracy primary detector standard in the ultraviolet, vacuum-ultraviolet, and soft-x-ray spectral ranges.
Hans Rabus,V. Persch,Gerhard Ulm +2 more
TL;DR: The accuracy of detector calibration in the UV, vacuum-ultraviolet, and soft-x-ray spectral ranges could be significantly improved by the use of the synchrotron radiation electrical substitution radiometer (SYRES) as the primary detector standard.
References
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Journal ArticleDOI
A Cryogenic Radiometer for Absolute Radiometric Measurements
J E Martin,Nigel Fox,P J Key +2 more
TL;DR: In this article, a new electrical-substitution absolute radiometer operating at 5 K, based on a standard commercial helium cryostat, which has been developed at NPL for optical radiant power measurements, is described.
Journal ArticleDOI
Silicon photodiode device with 100% external quantum efficiency
TL;DR: A device utilizing four inversion layer photodiodes in a light-trapping arrangement was constructed and tested and it was found that applying a reverse bias voltage extended the high quantum efficiency response over the entire visible spectrum and up to the highest radiant power level studied.
Journal ArticleDOI
Trap Detectors and their Properties
TL;DR: In this article, the authors describe a new solid state detector which fulfils all the requirements of the ideal detector for optical radiation measurements, which is spatially uniform, linear, stable and has a predictable relative spectral response.
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Silicon detector nonlinearity and related effects.
TL;DR: An explanation is put forth for the observed nonlinearity in the red spectral region of the response of silicon photodiodes, and correlation of non linearity with spatial nonuniformity of response is demonstrated.
Journal ArticleDOI
Absolute Spectral Radiometric Determination of the Thermodynamic Temperatures of the Melting/Freezing Points of Gold, Silver and Aluminium
TL;DR: In this paper, narrow band filter radiometers have been used to measure the spectral radiance of black bodies held at the melting/freezing points of aluminium, silver and gold with an accuracy of 0.04%.