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Proceedings Paper

Terahertz imaging with quantum cascade lasers
Author(s): Alan W. Lee; Tsung-Yu Kao; Ian A. Zimmerman; Naoki Oda; Qing Hu
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Paper Abstract

Milliwatt average power terahertz quantum cascade lasers (THz-QCLs) combined with microbolometer focal plane array cameras allow for acquisition rates on the order of 1×106 pixels/s. This system enables real-time imaging in transmission and reflection modes with signal to noise ratios of >25 dB per pixel. While these system allow rapid imaging for fairly transparent samples, signal to noise ratios of > 90 dB can be achieved with single element detectors where the samples are more opaque or require higher SNR. Systems using LongWave's terahertz QCLs and single/multi-element detectors will be presented.

Paper Details

Date Published: 26 May 2016
PDF: 10 pages
Proc. SPIE 9854, Image Sensing Technologies: Materials, Devices, Systems, and Applications III, 98540R (26 May 2016); doi: 10.1117/12.2224140
Show Author Affiliations
Alan W. Lee, LongWave Photonics LLC (United States)
Tsung-Yu Kao, LongWave Photonics LLC (United States)
Ian A. Zimmerman, LongWave Photonics LLC (United States)
Naoki Oda, NEC Corp. (Japan)
Qing Hu, Massachusetts Institute of Technology (United States)

Published in SPIE Proceedings Vol. 9854:
Image Sensing Technologies: Materials, Devices, Systems, and Applications III
Nibir K. Dhar; Achyut K. Dutta, Editor(s)

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