High-Resolution Passive Video-Rate Imaging at 350 GHz

Published

May 26, 2011

Author(s)

Daniel T. Becker

Abstract

We are developing a 350 GHz cryogenic passive video imaging system for use in standoff security applications. This demonstration system uses 800 photon-noise-limited superconducting transition edge sensor bolometers, read out using a time-division multiplexed readout system. It will image a 1~m $\times$ 1~m field of view at a standoff distance of 16 m to a resolution of approximately 1 cm at video frame rates (20 frames per second). High spatial resolution is achieved by the use of an f/2.0 Cassegrain optical system with 1.3 m primary mirror. Preliminary dark and optical testing of prototype detectors indicates that we can achieve a noise equivalent temperature difference (NETD) of 200 mK for the fully sampled 1 m x 1 m image at 20 frames per second. We report on the current status of development of this system.

Proceedings Title

Passive Millimeter-Wave Imaging Technology XIV

Conference Dates

April 25-29, 2011

Conference Location

Orlando, FL

Conference Title

SPIE Defense, Security, and Sensing

Pub Type

Conferences

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Citation

Becker, D. (2011), High-Resolution Passive Video-Rate Imaging at 350 GHz, Passive Millimeter-Wave Imaging Technology XIV, Orlando, FL, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=908550 (Accessed October 6, 2025)