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Proceedings Paper

Noise analysis of a CCD based ultra-violet spectrometry system
Author(s): J. J. Davenport; J. Hodgkinson; J. R. Saffell; R. P. Tatam
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Paper Abstract

We present the results of a study into the noise behaviour of an Avaspec-3648 CCD UV spectrometer for use in a spectroscopic gas detection system. A comparison was made between a deuterium UV lamp and a range of newly developed UV LEDs. A number of noise phenomena were identified and quantified including source fluctuation noise, photo-response non-uniformity (PRNU), dark current noise, fixed pattern noise (FPN) and read noise. For spectral measurements the dominant noise phenomenon was PRNU, giving a noise equivalent absorption (NEA) of 8 x 10-3 AU. A set of noise limitation techniques is presented, which decreases the NEA to 2 x 10-3 AU.

Paper Details

Date Published: 9 May 2012
PDF: 14 pages
Proc. SPIE 8439, Optical Sensing and Detection II, 84391P (9 May 2012); doi: 10.1117/12.922328
Show Author Affiliations
J. J. Davenport, Cranfield Univ. (United Kingdom)
J. Hodgkinson, Cranfield Univ. (United Kingdom)
J. R. Saffell, Alphasense Ltd. (United Kingdom)
R. P. Tatam, Cranfield Univ. (United Kingdom)


Published in SPIE Proceedings Vol. 8439:
Optical Sensing and Detection II
Francis Berghmans; Anna Grazia Mignani; Piet De Moor, Editor(s)

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