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New tunnel diode for zero-bias direct detection for millimeter-wave imagers

Croke, Edward T. and Schulman, Joel N. and Chow, David H. and Dunlap, Howard L. and Holabird, Kevin S. and Warren, Leslie D. and Morgan, Matthew A. and Weinreb, Sander (2001) New tunnel diode for zero-bias direct detection for millimeter-wave imagers. In: Passive Millimeter-Wave Imaging Technology V. Proceedings of SPIE. No.4373. Society of Photo-optical Instrumentation Engineers , Bellingham, WA, pp. 58-63.

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High-resolution passive millimeter wave imaging cameras require per pixel detector circuitry that is simple, has high sensitivity, low noise, and low power. Detector diodes that do not require bias or local oscillator input, and have high cutoff frequencies are strongly preferred. In addition, they must be manufacturable in large quantities with reasonable uniformity and reproducibility. Such diodes have not been obtainable for W-band and above. We are developing zero-bias square-law detector diodes based on InAs/Alsb/GaAlSb heterostructures which for the first time offer a cost-effective solution for large array formats. The diodes have a high frequency response and are relatively insensitive to growth and process variables. The large zero- bias non-linearity in current floor necessary for detection arises from interband tunneling between the InAs and the GaAlSb layers. Video resistance can be controlled by varying an Alsb tunnel barrier layer thickness. Our analysis shows that capacitance can be further decreased and sensitivity increased by shrinking the diode area, as the diode can have very high current density. DC and RF characterization of these devices and an estimate of their ultimate frequency performance in comparison with commercially available diodes are presented.

Item Type:Book Section
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URLURL TypeDescription
Weinreb, Sander0000-0002-9353-6204
Additional Information:© 2001 Society of Photo-optical Instrumentation Engineers. Partial support for this work was provided by the National Reconnaissance Office under Contract No. NRO000-00-C-0071, the Army Research Laboratory under Contract No. DAAL01-94-C-0100, and Trex Enterprises Corporation.
Funding AgencyGrant Number
National Reconnaissance OfficeNRO000-00-C-0071
Army Research LaboratoryDAAL01-94-C-0100
Trex Enterprises CorporationUNSPECIFIED
Subject Keywords:passive millimeter-wave imaging, backward diode, tunnel diode, direct detection, zero-bias diode
Series Name:Proceedings of SPIE
Issue or Number:4373
Record Number:CaltechAUTHORS:20180925-145741691
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Official Citation:Edward T. Croke, Edward T. Croke, Joel N. Schulman, Joel N. Schulman, David H. Chow, David H. Chow, Howard L. Dunlap, Howard L. Dunlap, Kevin S. Holabird, Kevin S. Holabird, Leslie D. Warren, Leslie D. Warren, Matthew A. Morgan, Matthew A. Morgan, Sander Weinreb, Sander Weinreb, } "New tunnel diode for zero-bias direct detection for millimeter-wave imagers", Proc. SPIE 4373, Passive Millimeter-Wave Imaging Technology V, (21 August 2001); doi: 10.1117/12.438136;
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:89932
Deposited By: Tony Diaz
Deposited On:25 Sep 2018 23:05
Last Modified:16 Nov 2021 00:39

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