1024 × 1024 pixel mid-wavelength and long-wavelength infrared QWIP focal plane arrays for imaging applications
Gunapala, S D; Bandara, S V; Liu, J K; Hill, C J; Rafol, S B; Mumolo, J M; Trinh, J T; Tidrow, M Z; LeVan, P D; Gunapala, S D; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA; Bandara, S V; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA; Liu, J K; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA; Hill, C J; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA; Rafol, S B; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA; Mumolo, J M; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA; Trinh, J T; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA; Tidrow, M Z; Missile Defense Agency/AS, 7100 Defense Pentagon, Washington, DC 20301, USA; LeVan, P D; Air Force Research Laboratory, Kirtland Air Force Base, NM 87117, USA
Журнал:
Semiconductor Science and Technology
Дата:
2005-05-01
Аннотация:
Mid-wavelength infrared (MWIR) and long-wavelength infrared (LWIR) 1024 × 1024 pixel quantum well infrared photodetector (QWIP) focal planes have been demonstrated with excellent imaging performance. The MWIR QWIP detector array has demonstrated a noise equivalent differential temperature (NEΔT) of 17 mK at a 95 K operating temperature with f/2.5 optics at 300 K background and the LWIR detector array has demonstrated a NEΔT of 13 mK at a 70 K operating temperature with the same optical and background conditions as the MWIR detector array after the subtraction of system noise. Both MWIR and LWIR focal planes have shown background limited performance (BLIP) at 90 K and 70 K operating temperatures respectively, with similar optical and background conditions. In this paper, we will discuss the performance in terms of quantum efficiency, NEΔT, uniformity, operability and modulation transfer functions.
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