Predictive circuit model for noise in quantum cascade detectors

Delga, Alexandre; Carras, Mathieu; Doyennette, Laetitia; Trinité, Virginie; Nedelcu, Alexandru; Berger, V.

doi:10.1063/1.3671328

Cited by 11 publications

(7 citation statements)

References 17 publications

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“…Using the obtained scattering rates, the resistance, the responsivity and the specific detectivity was calculated. The resistance was calculated based on the model from [23]. A variation of the doping density generates a change of the bandstructure through band-bending, that can be compensated by a careful quantum design.…”

Section: Quantum Designmentioning

confidence: 99%

Quantum cascade detector utilizing the diagonal-transition scheme for high quality cavities

Reininger¹,

Schwarz²,

Gansch³

et al. 2015

Opt. Express

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A diagonal optically active transition in a quantum cascade detector is introduced as optimization parameter to obtain quality factor matching between a photodetector and a cavity. A more diagonal transition yields both higher extraction efficiency and lower noise, while the reduction of the absorption strength is compensated by the resonant cavity. The theoretical limits of such a scheme are obtained, and the impact of losses and cavity processing variations are evaluated. By optimizing the quantum design for a high quality cavity, a specific detectivity of 10(9) Jones can be calculated for λ = 8μm and T = 300K.

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Section: Quantum Designmentioning

confidence: 99%

Quantum cascade detector utilizing the diagonal-transition scheme for high quality cavities

Reininger¹,

Schwarz²,

Gansch³

et al. 2015

Opt. Express

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“…A more general expression for the noise can be derived from the Shockley-Ramo theorem. This approach was developed and utilized for calculating the noise in intersubband quantum cascade detectors [19][20][21]. The Shockley-Ramo theorem gives a connection between the internal device dynamics and the corresponding charge that flows in the external circuit.…”

Section: Iib3 Noise Reduction In Multiple-stage Detectorsmentioning

confidence: 99%

Low Noise Mid-Wavelength IR Photodetectors

Yang¹

2014

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“…19 All the intersubband transitions verify micro-reversibility: the contrapropagating fluxes are equal. They nonetheless generate noise, 22,23 and their study is crucial to understand the detector performances. Once a bias is applied, the micro-reversibility condition is broken and dark current is generated.…”

Section: Dark Currentmentioning

confidence: 99%

Description of transport mechanisms in a very long wave infrared quantum cascade detector under strong magnetic field

Jasnot¹,

Maëro²,

Péré‐Laperne³

et al. 2012

Journal of Applied Physics

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Measurements of current have been performed on a very long wave infrared quantum cascade detector under strong magnetic field applied parallel to the growth axis, both under dark and light conditions. The analysis of dark current as a function of temperature highlights three regimes of transport involving the different energy levels of the structure. For photocurrent analysis, we developed a model based on a rate equation approach taking into account all the electronic levels of the structure. This model is in agreement with the oscillatory component of the experimental magnetophotocurrent. It allows to identify the key points controlling the electronic transport such as extraction from the upper level of the optically active quantum well, location of ionized impurities and scattering mechanisms involved in the structure. This work is valuable for the future conception of highperformance quantum cascade detectors in infrared and far infrared range.

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Predictive circuit model for noise in quantum cascade detectors

Cited by 11 publications

References 17 publications

Quantum cascade detector utilizing the diagonal-transition scheme for high quality cavities

Quantum cascade detector utilizing the diagonal-transition scheme for high quality cavities

Low Noise Mid-Wavelength IR Photodetectors

Description of transport mechanisms in a very long wave infrared quantum cascade detector under strong magnetic field

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