Electrical network model for SPRITE detectors

Whitlock, James A.; Boreman, Glenn D.; Brown, H.K.; Plogstedt, Allen E.

doi:10.1117/12.56003

Cited by 2 publications

(3 citation statements)

References 11 publications

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“…The boundaries of the bar, as mentioned above, are nominally either ohmic or insulating. Observations on actual devices, 10 however, indicate behavior that differs from ideal conduction or insulation. Although real surfaces are difficult to describe fully, we take the first level of complexity, which is to ascribe a surface velocity V s to the passivated surfaces and to the contacts.…”

Section: Transport Problemmentioning

confidence: 99%

Modal analysis of transport processes in SPRITE detectors

Effenberger

Boreman

1995

Appl. Opt.

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Carrier transport in signal-processing-in-the-element (SPRITE) detectors is an important phenomenon because it determines properties such as the responsivity and the modulation transfer function (MTF). The previous literature has presented approximate solutions to the transport problem that neglect boundary effects, which have long been thought to play a major role in SPRITE behavior. We present a new solution to the problem through the use of modal analysis. This method intrinsically includes boundary conditions and thus is more complete than the previous analysis. Furthermore we use this solution to derive expressions for the MTF. The effects of the boundary conditions on the MTF are studied to determine their optimum values.

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Section: Transport Problemmentioning

confidence: 99%

Modal analysis of transport processes in SPRITE detectors

Effenberger

Boreman

1995

Appl. Opt.

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“…We notice that the time equation is of first order, and has the solution T(t') = exp(_k2tP) (10) The x, y, and z equations are second order and have general solutions:…”

Section: Tile Modal Solutionsmentioning

confidence: 99%

“…1% in very few terms (on the order of 10). This inaccuracy is in the computation only, and can be arbitrarily reduced through the inclusion of more terms in the series and by the use of higher-precision computation.…”

Section: [K+jc I) +K]mentioning

confidence: 99%

<title>Modal analysis of SPRITE transport processes</title>

Effenberger

Boreman

1995

SPIE Proceedings

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Carrier transport in Signal Processing In The Element (SPRITE) detectors is an important phenomenon because it determines properties such as the responsivity and the modulation transfer function (MTF). The previous literature has presented approximate solutions to the transport problem that neglect boundary effects, which have long been thought to play a major role in SPRITE behavior. In this paper we present a new solution to the problem through the use of modal analysis. This method intrinsically includes the three dimensional boundary conditions, and thus is more complete than the previous analysis. Through the analysis, certain dimensionless numbers arise which can be used to characterize SPRITE structure paranieters and clarify how these parameters impact device performance. Fmther, we use this solution to derive an expression for the MTF. The effects ofthe boundary conditions and the device geometry on MTF are investigated using the new theory. Our results show that the quality ofthe passivated surfaces has a weak influence on the MTF; however, the device width affects the MTF performance more strongly when the passivation is poor. The effect of blocking at the contacts is investigated. It is found that while marginal improvements in MTF roll-off could be achieved by making the contacts highly ohmic, the maximum signal amplitude is obtained with partially blocking contacts.

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Electrical network model for SPRITE detectors

Cited by 2 publications

References 11 publications

Modal analysis of transport processes in SPRITE detectors

Modal analysis of transport processes in SPRITE detectors

<title>Modal analysis of SPRITE transport processes</title>

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