Optical cavity enhancement infrared photodetector

摘要: An infrared detector array includes a plurality of pixel structures, each which comprises elongate quantum well radiation absorbing photoconductor (QWIP) elements. The group QWIP elements are spaced such that they comprise diffraction grating for the received infrared radiation. Top and bottom longitudinal contacts are provided on opposite surfaces to provide current flow transverse the axis element required bias voltage. optical cavity enhancement coating applied surface can be applied as fill space between extends above top the array if desired. may be in multiple layers. infrared radiation reflector is form an cavity receiving A structures combined focal plane array. Each structure produces signal transmitted through conductive bump terminal read out integrated circuit. The group signals from image corresponding radiation.