New techniques of characterisation

Guérineau, Nicolas; Rommeluère, Sylvain; Mambro, Emmanuel Di; Ribet, Isabelle; Primot, Jérôme

doi:10.1016/j.crhy.2003.10.019

Cited by 14 publications

(8 citation statements)

References 18 publications

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“…The main drawback is that they often require complex optics to produce these fringes. Guérineau et al [5] developed an original technique based on the projection of high-spatial resolution patterns onto the whole sensor without classic optics but using the self-imaging property (known as the Talbot effect) of a diffracting element called Continuously Self-Imaging Grating (CSIG). The CSIG is illuminated by a plane wave, the projection of the pattern onto the detector is optic-less, the test bench alignment budget is low.…”

Section: B the Resultsmentioning

confidence: 99%

“…The MTF is estimated by projecting onto the detector a pattern with a known spatial frequency content. Guérineau et al [5] have developed an original technique based on this Fourier-transform approach. It is based on the projection of high-spatial resolution periodic patterns onto the whole sensor without classic optics such as lens or other focusing components but using the self-imaging property (known as the Talbot effect) of a particular class of diffracting gratings illuminated by a plane wave.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Intrapixel measurement techniques on large focal plane arrays for astronomical applications: a comparative study

Ketchazo

Viale

Boulade

et al. 2017

International Conference on Space Optics — ICSO 2016

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Section: B the Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Intrapixel measurement techniques on large focal plane arrays for astronomical applications: a comparative study

Ketchazo

Viale

Boulade

et al. 2017

International Conference on Space Optics — ICSO 2016

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“…The PTF describes the pixel filtering effects (as the modulation transfer function (MTF) does in optics field). To sample the PTF, our approach consists to project high-resolution periodic patterns onto the sensor using the self-imaging property (known as the Talbot effect) of a continuously self-imaging grating (CSIG) illuminated by a plane wave [8] (Fig. 1).…”

Section: Description Of Our Ipsv Measurement Techniquementioning

confidence: 99%

A new technique of characterization of intrapixel response dedicated to astronomical detectors

Ketchazo

Viale

Boulade

et al. 2015

Nuclear Instruments and Methods in Physics Research Section A:

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“…[19][20][21][22] As LWIR e-APD focal plane arrays have no readout integrated circuits (ROICs), direct acquisition of the interferogram image was replaced by a 2D displacement (x and y) of the continuously self-imaging grating in front of the pixel using two linear stages. The high background photocurrent was another major difficulty of this measurement.…”

Section: Spectral and Spatial Response At Zero Biasmentioning

confidence: 99%

Experimental Performance and Monte Carlo Modeling of Long Wavelength Infrared Mercury Cadmium Telluride Avalanche Photodiodes

Derelle

Bernhardt

Haïdar

et al. 2009

Journal of Elec Materi

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We evaluated the performance of long-wavelength infrared (LWIR, k c = 9.0 lm at 80 K) mercury cadmium telluride electron-injected avalanche photodiodes (e-APDs) in terms of gain, excess noise factor, and dark current, and also spectral and spatial response at zero bias. We found an exponential gain curve up to 23 at 100 K and a low excess noise factor close to unity (F = 1-1.25). These properties are indicative of a single carrier multiplication process, which is electron impact ionization. The dark current is prevailed by a diffusion current at low reverse bias. However, tunneling currents at higher reverse bias limited the usable gain. The measurements of the pixel spatial response showed that the collection width, and, especially, the amplitude of the response peak, increased with temperature. Furthermore, we developed a Monte Carlo model to understand the multiplication process in HgCdTe APDs. The first simulation results corroborated experimental measurements of gain and excess noise factor in mid-wavelength infrared (MWIR, x = 0.3) and LWIR (x = 0.235) e-APDs at 80 K. This model makes it possible for phenomenological studies to be performed to identify the main physical effects and technological parameters that influence the gain and excess noise. The study of the effect of the n À -layer thickness on APD performance demonstrated the existence of an optimum value in terms of gain.

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New techniques of characterisation

Cited by 14 publications

References 18 publications

Intrapixel measurement techniques on large focal plane arrays for astronomical applications: a comparative study

Intrapixel measurement techniques on large focal plane arrays for astronomical applications: a comparative study

A new technique of characterization of intrapixel response dedicated to astronomical detectors

Experimental Performance and Monte Carlo Modeling of Long Wavelength Infrared Mercury Cadmium Telluride Avalanche Photodiodes

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