< back to main site

Publications

Absolute linearity measurements on a gold-black coated deuterated L-alamine-doped Triglycine sulphate pyroelectric detector.

Theocharous, E (2008) Absolute linearity measurements on a gold-black coated deuterated L-alamine-doped Triglycine sulphate pyroelectric detector. Appl. Opt., 47 (21). pp. 3731-3736.

Full text not available from this repository.

Abstract

The non-linearity characteristics of a commercially-available DLATGS pyroelectric detector were experimentally investigated at high levels of illumination using the NPL detector linearity characterization facility. The detector was shown to exhibit a super-linear response at high levels of illumination. Moreover, the linearity factor was shown to be a function of the area of the spot on the detector active area being illuminated, i.e. a function of the incident irradiance. Possible reasons for the observed behaviour are proposed and discussed. The temperature coefficient of response of the DLATGS pyroelectric detector was measured and found to be higher than +2.5% oC-1. This large and positive temperature coefficient of response is the most likely cause of the super-linear behaviour of the DLATGS pyroelectric detector. Variations in the slopes of the plots of the linearity factor versus irradiance for different areas being illuminated have been assigned to the spatial uniformity of response of the same detector, since the spatial uniformity was shown to vary by 40% over the active area of the detector.

Item Type: Article
Keywords: DLATGS detectors, Infrared, Linearity of response, Pyroelectric detectors, Super-linearity, Temperature coefficient of response
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/4226

Actions (login required)

View Item View Item