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Optical concentrati...
Optical concentration in fully delineated mid-wave infrared T2SL detectors arrays
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- Ramos Santesmases, David (author)
- KTH,Elektronik och inbyggda system,IRnova AB, Isafjordsgatan 26 - 5C, Kista, Sweden
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- Delmas, M. (author)
- IRnova AB, Isafjordsgatan 26 - 5C, Kista, Sweden
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- Höglund, L. (author)
- IRnova AB, Isafjordsgatan 26 - 5C, Kista, Sweden
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- Ivanov, R. (author)
- IRnova AB, Isafjordsgatan 26 - 5C, Kista, Sweden
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- Žurauskaitė, L. (author)
- IRnova AB, Isafjordsgatan 26 - 5C, Kista, Sweden
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- Evans, D. (author)
- IRnova AB, Isafjordsgatan 26 - 5C, Kista, Sweden
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- Rihtnesberg, D. (author)
- IRnova AB, Isafjordsgatan 26 - 5C, Kista, Sweden
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- Bendrot, L. (author)
- IRnova AB, Isafjordsgatan 26 - 5C, Kista, Sweden
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- Smuk, S. (author)
- IRnova AB, Isafjordsgatan 26 - 5C, Kista, Sweden
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- Smuk, A. (author)
- IRnova AB, Isafjordsgatan 26 - 5C, Kista, Sweden
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- Becanovic, S. (author)
- IRnova AB, Isafjordsgatan 26 - 5C, Kista, Sweden
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- Almqvist, S. (author)
- IRnova AB, Isafjordsgatan 26 - 5C, Kista, Sweden
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- Tinghag, P. (author)
- IRnova AB, Isafjordsgatan 26 - 5C, Kista, Sweden
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- Fattala, S. (author)
- IRnova AB, Isafjordsgatan 26 - 5C, Kista, Sweden
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- Costard, E. (author)
- IRnova AB, Isafjordsgatan 26 - 5C, Kista, Sweden
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- Hellström, Per-Erik, 1970- (author)
- KTH,Elektronik och inbyggda system
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(creator_code:org_t)
- AIP Publishing, 2023
- 2023
- English.
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In: Applied Physics Letters. - : AIP Publishing. - 0003-6951 .- 1077-3118. ; 123:18
- Related links:
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
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- The dependence of quantum efficiency (QE) on fill factor and pixel pitch is studied theoretically and experimentally in fully delineated type-II superlattice (T2SL) detectors. Theoretically, a 2-dimensional simulation model is used to compute the absorption in the array geometry, which shows an insensitivity of the optical response to the fill factor. This is a result of the photodiode array (PDA) geometry concentrating the light in the pixel area. QE measurements on PDAs with varying pixel pitch (from 225 to 10 μm) and fill factors (from 98% to 64%) confirm this independence of the QE on the fill factor and results in a 50% increase in the photocurrent density in 10 μm pitch PDAs compared to 225 μm pitch PDAs. Furthermore, measurements of the dark current density vs pixel size revealed an absence of surface leakage in these PDAs, which, combined with the increased photocurrent density results in an improved signal-to-noise ratio when reducing the pitch in these T2SL detectors. Finally, this result resolves the QE-modulation transfer function trade-off, as the electrical isolation of the pixel is carried out without impacting the QE of the array.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Telekommunikation (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Telecommunications (hsv//eng)
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Ramos Santesmase ...
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Delmas, M.
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Höglund, L.
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Ivanov, R.
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Žurauskaitė, L.
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Evans, D.
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show more...
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Rihtnesberg, D.
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Bendrot, L.
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Smuk, S.
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Smuk, A.
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Becanovic, S.
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Almqvist, S.
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Tinghag, P.
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Fattala, S.
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Costard, E.
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Hellström, Per-E ...
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- About the subject
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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and Electrical Engin ...
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and Telecommunicatio ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Atom and Molecul ...
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Applied Physics ...
- By the university
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Royal Institute of Technology