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Proceedings Paper

Extraction of the frequency spectrum of the noise of a HAWAII2RG NIR detector and impact on low-flux measurements
Author(s): C. Cerna; G. Smadja; A. Castera; A. Ealet
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Paper Abstract

The readout noise of a H2RG HgCdTe NIR detector from Teledyne is measured at a temperature T=110K. It is shown that a Fowler mode with n = 240 allows to reach a noise of 2.63e (single read). A description of the power spectrum in terms of 3 parameters reproduces the variation of the noise as a function the number of Fowler samples, as well as its dependence on the periodicity of the sampling. The variance of the noise decreases with frequency with an effective power of 0.62 in our measurement domain. The behaviour of the detector under different experimental conditions can then be predicted.

Paper Details

Date Published: 20 July 2010
PDF: 7 pages
Proc. SPIE 7742, High Energy, Optical, and Infrared Detectors for Astronomy IV, 77421J (20 July 2010); doi: 10.1117/12.856724
Show Author Affiliations
C. Cerna, Ctr. de Physique des Particules de Marseille (France)
G. Smadja, Institut de Physique Nucléaire de Lyon (France)
A. Castera, Institut de Physique Nucléaire de Lyon (France)
A. Ealet, Ctr. de Physique des Particules de Marseille (France)


Published in SPIE Proceedings Vol. 7742:
High Energy, Optical, and Infrared Detectors for Astronomy IV
Andrew D. Holland; David A. Dorn, Editor(s)

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