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Modeling of Polarization-Selective Light-Coupling in Quantum Well Infrared Photodetectors with Small Pixel Sizes

Bendrot, Linnéa LU ; Delmas, Marie ; Pettersson, Håkan LU ; Fu, Ying ; Ivanov, Ruslan ; Visser, Dennis ; Evans, Dean ; Rihtnesberg, David ; Buldu, Dilara G. and Smuk, Anton , et al. (2025) In Physica Status Solidi (A) Applications and Materials Science
Abstract

Herein, a model is developed to study the polarization-selective light-coupling in quantum well infrared photodetector arrays with 15 and 30 μm pixel pitch. The polarization-selective light-coupling is achieved using 1D lamella gratings with varying grating orientation and studied through 2D and 3D finite-element method simulations. The extracted absorption quantum efficiency ηabs, derived from the field distribution, shows excellent agreement with experimental data in terms of absorption peak position for both pitch sizes. Several factors impacting the simulated absorptance level are discussed and a good agreement between the simulation and measured ηabs is achieved. Thanks to the developed 3D model, the... (More)

Herein, a model is developed to study the polarization-selective light-coupling in quantum well infrared photodetector arrays with 15 and 30 μm pixel pitch. The polarization-selective light-coupling is achieved using 1D lamella gratings with varying grating orientation and studied through 2D and 3D finite-element method simulations. The extracted absorption quantum efficiency ηabs, derived from the field distribution, shows excellent agreement with experimental data in terms of absorption peak position for both pitch sizes. Several factors impacting the simulated absorptance level are discussed and a good agreement between the simulation and measured ηabs is achieved. Thanks to the developed 3D model, the polarization-selective light-coupling in pixels with 0° and 45° grating orientation is explored. The developed model paves the way for future studies on enhanced light-coupling in small pitch infrared detectors using resonance structures.

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organization
publishing date
type
Contribution to journal
publication status
in press
subject
keywords
diffraction, finite-element method modeling, gratings, long-wave infrared, polarization-selectivity, quantum well infrared photodetectors
in
Physica Status Solidi (A) Applications and Materials Science
publisher
Wiley-VCH Verlag
external identifiers
  • scopus:85213549398
ISSN
1862-6300
DOI
10.1002/pssa.202400691
language
English
LU publication?
yes
id
61e807e3-1a55-47e6-a25a-5c07e8d4a9eb
date added to LUP
2025-03-25 15:02:54
date last changed
2025-04-04 13:57:44
@article{61e807e3-1a55-47e6-a25a-5c07e8d4a9eb,
  abstract     = {{<p>Herein, a model is developed to study the polarization-selective light-coupling in quantum well infrared photodetector arrays with 15 and 30 μm pixel pitch. The polarization-selective light-coupling is achieved using 1D lamella gratings with varying grating orientation and studied through 2D and 3D finite-element method simulations. The extracted absorption quantum efficiency η<sub>abs</sub>, derived from the field distribution, shows excellent agreement with experimental data in terms of absorption peak position for both pitch sizes. Several factors impacting the simulated absorptance level are discussed and a good agreement between the simulation and measured η<sub>abs</sub> is achieved. Thanks to the developed 3D model, the polarization-selective light-coupling in pixels with 0° and 45° grating orientation is explored. The developed model paves the way for future studies on enhanced light-coupling in small pitch infrared detectors using resonance structures.</p>}},
  author       = {{Bendrot, Linnéa and Delmas, Marie and Pettersson, Håkan and Fu, Ying and Ivanov, Ruslan and Visser, Dennis and Evans, Dean and Rihtnesberg, David and Buldu, Dilara G. and Smuk, Anton and Sehlin, Susann and Almqvist, Susanne and Englund, Maria and Tinghag, Pia and Costard, Eric and Höglund, Linda}},
  issn         = {{1862-6300}},
  keywords     = {{diffraction; finite-element method modeling; gratings; long-wave infrared; polarization-selectivity; quantum well infrared photodetectors}},
  language     = {{eng}},
  publisher    = {{Wiley-VCH Verlag}},
  series       = {{Physica Status Solidi (A) Applications and Materials Science}},
  title        = {{Modeling of Polarization-Selective Light-Coupling in Quantum Well Infrared Photodetectors with Small Pixel Sizes}},
  url          = {{http://dx.doi.org/10.1002/pssa.202400691}},
  doi          = {{10.1002/pssa.202400691}},
  year         = {{2025}},
}