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Development of a switched integrator amplifier for high accuracy optical measurements

Mountford, J R; Porrovecchio, G*; Smid, M*; Smid, R* (2008) Development of a switched integrator amplifier for high accuracy optical measurements. Appl. Opt., 47 (31). pp. 5821-5828.

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Abstract

This article describes the development of a fully characterized current-voltage amplifier using the switched integrator technique. This work was conducted to see if the switched integrator is suit-able for purposes of high accuracy optical measurements. Two distinct systems have been developed in parallel at NPL and CMI laboratories. The main focus of the project was to obtain gain re-peatability and linearity better then 0.001% and a dynamic range from uA to 100 fA level. Initial results indicate that the sub 0.001% error level is achievable. The amplifiers developed have character-istics that make them suitable for applications measuring very low radiant flux with large area semiconductor detectors.

Item Type: Article
Keywords: Amplifiers, photodiode, optical measurement, low flux
Subjects: Optical Radiation and Photonics
Optical Radiation and Photonics > Radiometry and Detectors
Last Modified: 02 Feb 2018 13:15
URI: http://eprintspublications.npl.co.uk/id/eprint/4303

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