Achieving BLIP performance in a direct injection readout hybrid focal plane array

Vishnu Gopal

doi:10.1117/12.179708

15 July 1994 Achieving BLIP performance in a direct injection readout hybrid focal plane array

Vishnu Gopal

Proceedings Volume 2225, Infrared Detectors and Focal Plane Arrays III; (1994) https://doi.org/10.1117/12.179708
Event: SPIE's International Symposium on Optical Engineering and Photonics in Aerospace Sensing, 1994, Orlando, FL, United States

Abstract

An analytical expression for calculating the effective injection efficiency (A.C. injection efficiency) in direct injection readout hybrid focal plane array (FPA) is presented in this paper. The theory takes care of the shunt resistance due to surface leakage currents and the shift of operating point of the pixel with the variation in detector current. A study of effective injection efficiency as a function of RA (product of diode's dynamic impedance at the operating point and the area of diode) product in Hg_1-xCd_xTe hybrid focal plane array is reported and the role of buffered direct injection circuit in improving the effective injection efficiency has been investigated. This effective injection efficiency is then used to calculate the temporal noise. It is concluded that the BDI interface circuit plays an important role in achieving BLIP operation of FPA.

Citation Download Citation

Vishnu Gopal "Achieving BLIP performance in a direct injection readout hybrid focal plane array", Proc. SPIE 2225, Infrared Detectors and Focal Plane Arrays III, (15 July 1994); https://doi.org/10.1117/12.179708

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