Presentation
10 June 2024 Enhancement of quantum efficiency via tuning electric-field distribution for long-wavelength infrared InAs/GaSb type-II superlattice detectors
Quankui Yang, Raphael Müller, Mark Wobrock, Wolfgang Luppold, Volker Daumer, Robert Rehm
Author Affiliations +
Abstract
In this contribution, we will present a finite element method modelling study for the optimization of QE in LWIR InAs/GaSb type-II superlattice detectors via the employment of metastructures. Experiments to realize these devices will also be presented. In our approach, the average integrated QE for a structure with an absorber thickness of 2.1 µm is theoretically improved from 35% to 73%, corresponding to an improvement of 108%. For a detector with a thin absorber layer of 0.9 µm, the average integrated QE is improved from 21% to 59%, corresponding to an increasement of 180%.
Conference Presentation
© (2024) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Quankui Yang, Raphael Müller, Mark Wobrock, Wolfgang Luppold, Volker Daumer, and Robert Rehm "Enhancement of quantum efficiency via tuning electric-field distribution for long-wavelength infrared InAs/GaSb type-II superlattice detectors", Proc. SPIE 13046, Infrared Technology and Applications L, 130460G (10 June 2024); https://doi.org/10.1117/12.3013274
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KEYWORDS
Quantum efficiency

Long wavelength infrared

Electric fields

Superlattices

Quantum enhancement

Coating thickness

Detector arrays

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