Optimization of corrugated-QWIPs for large format, high quantum efficiency, and multi-color FPAs

Kwong Kit Choi, Carlos Monroy, Venkataraman Swaminathan, Theodor Tamir, Kok-Ming Leung, John Devitt, David Forrai, Darrel Endres

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    Previously, we demonstrated a large format 1024 × 1024 corrugated quantum well infrared photodetector focal plane array (C-QWIP FPA). The FPA has a cutoff at 8.6 μm and is BLIP at 76 K with f/1.8 optics. The pixel had a shallow trapezoidal geometry that simplified processing but limited the quantum efficiency QE. In this paper, we will present two approaches to achieve a larger QE for the C-QWIPs. The first approach increases the size of the corrugations for more active volume and adopts a nearly triangular pixel geometry for larger light reflecting surfaces. With these improvements, QE is predicted to be about 35% for a pair of inclined sidewalk, which is more than twice the previous value. The second approach is to use Fabry-Perot resonant oscillations inside the corrugated cavities to enhance the vertical electric field strength. With this approach, a larger QE of 50% can be achieved within certain spectral regions without using either very thick active layers or anti-reflection coatings. The former approach has been adopted to produce a series single color FPAs, and the experimental results will be discussed in a companion paper. In this paper, we also describe using voltage tunable detector materials to achieve multi-color capability for these FPAs.

    Original languageEnglish (US)
    Title of host publicationInfrared Technology and Applications XXXII
    Volume6206 I
    DOIs
    StatePublished - 2006
    EventInfrared Technology and Applications XXXII - Kissimmee, FL, United States
    Duration: Apr 17 2006Apr 21 2006

    Other

    OtherInfrared Technology and Applications XXXII
    CountryUnited States
    CityKissimmee, FL
    Period4/17/064/21/06

    Fingerprint

    quantum well infrared photodetectors
    Quantum efficiency
    format
    quantum efficiency
    Pixels
    pixels
    Quantum well infrared photodetectors
    Color
    color
    Antireflection coatings
    optimization
    Focal plane arrays
    Geometry
    antireflection coatings
    electric field strength
    focal plane devices
    geometry
    Optics
    cut-off
    Electric fields

    Keywords

    • EM modeling
    • FPA
    • Optical coupling
    • QWIP

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering
    • Condensed Matter Physics

    Cite this

    Choi, K. K., Monroy, C., Swaminathan, V., Tamir, T., Leung, K-M., Devitt, J., ... Endres, D. (2006). Optimization of corrugated-QWIPs for large format, high quantum efficiency, and multi-color FPAs. In Infrared Technology and Applications XXXII (Vol. 6206 I). [62060B] https://doi.org/10.1117/12.663960

    Optimization of corrugated-QWIPs for large format, high quantum efficiency, and multi-color FPAs. / Choi, Kwong Kit; Monroy, Carlos; Swaminathan, Venkataraman; Tamir, Theodor; Leung, Kok-Ming; Devitt, John; Forrai, David; Endres, Darrel.

    Infrared Technology and Applications XXXII. Vol. 6206 I 2006. 62060B.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Choi, KK, Monroy, C, Swaminathan, V, Tamir, T, Leung, K-M, Devitt, J, Forrai, D & Endres, D 2006, Optimization of corrugated-QWIPs for large format, high quantum efficiency, and multi-color FPAs. in Infrared Technology and Applications XXXII. vol. 6206 I, 62060B, Infrared Technology and Applications XXXII, Kissimmee, FL, United States, 4/17/06. https://doi.org/10.1117/12.663960
    Choi KK, Monroy C, Swaminathan V, Tamir T, Leung K-M, Devitt J et al. Optimization of corrugated-QWIPs for large format, high quantum efficiency, and multi-color FPAs. In Infrared Technology and Applications XXXII. Vol. 6206 I. 2006. 62060B https://doi.org/10.1117/12.663960
    Choi, Kwong Kit ; Monroy, Carlos ; Swaminathan, Venkataraman ; Tamir, Theodor ; Leung, Kok-Ming ; Devitt, John ; Forrai, David ; Endres, Darrel. / Optimization of corrugated-QWIPs for large format, high quantum efficiency, and multi-color FPAs. Infrared Technology and Applications XXXII. Vol. 6206 I 2006.
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