Modulation transfer function measurement of an infrared focal plane array by use of the self-imaging property of a canted periodic target

Guérineau, Nicolas; Primot, Jérôme; Tauvy, Michel; Caes, Marcel

doi:10.1364/ao.38.000631

Cited by 20 publications

(15 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[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

View full text Add to dashboard Cite

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.

show abstract

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

View full text Add to dashboard Cite

show abstract

“…This method has been extended to a 1D periodic target that is canted with respect to the pixel grid. This way, no conditions are required for d [9].…”

Section: Technique Developed At Oneramentioning

confidence: 99%

New techniques of characterisation

Guérineau

Rommeluère

Mambro

et al. 2003

Comptes Rendus. Physique

Self Cite

View full text Add to dashboard Cite

“…3,4 For measuring the MTF of solid-state cameras, the literature cites different methods that differ essentially in the type of target or pattern used as the object. Thus, for example, methods use bar targets, 5 random targets, 6,7 canted self-imaging targets, 8 and interferometric fringes. 9,10 One of the methods to measure the MTF, established in our laboratory, is based on using a laser-speckle pattern as the object.…”

Section: Introductionmentioning

confidence: 99%

Measuring the image quality of digital-camera sensors by a ping-pong ball

et al. 2014

View full text Add to dashboard Cite

In this work, we present a low-cost experimental setup to evaluate the image quality of digital-camera sensors, which can be implemented in undergraduate and postgraduate teaching. The method consists of evaluating the modulation transfer function (MTF) of digital-camera sensors by speckle patterns using a ping-pong ball as a diffuser, with two handmade circular apertures acting as input and output ports, respectively. To specify the spatial-frequency content of the speckle pattern, it is necessary to use an aperture; for this, we made a slit in a piece of black cardboard. First, the MTF of a digital-camera sensor was calculated using the ping-pong ball and the handmade slit, and then the MTF was calculated using an integrating sphere and a high-quality steel slit. Finally, the results achieved with both experimental setups were compared, showing a similar MTF in both cases.

show abstract

Modulation transfer function measurement of an infrared focal plane array by use of the self-imaging property of a canted periodic target

Cited by 20 publications

References 6 publications

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

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

New techniques of characterisation

Measuring the image quality of digital-camera sensors by a ping-pong ball

Contact Info

Product

Resources

About