Broadband focal plane array sensors, operating in the 0.25 to 2.5 μm wavelength range, are an enabling technology for several imaging applications including atmospheric greenhouse gas monitoring. Currently, hyper-spectral imagers use separate image sensors for different spectral sub-bands, for example GaN for UV, Si for visible, and InGaAs for IR, thus requiring expensive component-level integration. Our approach is to manufacture a single image sensor with 0.25 to 2.5 μm spectral range using GaAs substrates, which are commercially available in diameters as large as 6 inches. The key challenges, namely achieving high UV efficiency, low dark current, and high speed operation, are addressed separately in a lattice-matched GaAs UV-to-Visible photodiode and a lattice-mismatched InGaAs NIR-to-SWIR photodiode. The method for monolithically combining the two structures into a single UV-to-SWIR photodiode / photodiode array is also presented.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Low-noise UV-to-SWIR broadband photodiodes for large-format focal plane array sensors


    Contributors:

    Conference:

    Sensors and Systems for Space Applications V ; 2012 ; Baltimore,Maryland,United States


    Published in:

    Publication date :

    2012-05-07





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Low-noise UV-to-SWIR broadband photodiodes for large-format focal plane array sensors (Invited Paper) [8385-05]

    Joshi, A. / Datta, S. / SPIE (Society) | British Library Conference Proceedings | 2012


    Large-format SWIR/MWIR HgCdTe infrared focal plane arrays for astronomy (Invited Paper) [3379-61]

    Vural, K. / Kozlowski, L. J. / Cabelli, C. et al. | British Library Conference Proceedings | 1998


    Geiger-mode focal plane arrays enable SWIR 3D imaging

    Itzler, M. / Entwistle, M. | British Library Online Contents | 2011


    Schottky Barrier Focal Plane Arrays for SWIR and MWIR

    Roca, E. | British Library Online Contents | 1992


    High-operability SWIR HgCdTe focal plane arrays [5209-03]

    Vydyanath, H. R. / Lamarre, P. / Tobin, S. P. et al. | British Library Conference Proceedings | 2003