Terahertz imaging with quantum cascade lasers
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Milliwatt average power terahertz quantum cascade lasers (THz-QCLs) combined with microbolometer focal plane array cameras allow for acquisition rates on the order of 1106pixels/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. 2016 SPIE. Keywords: terahertz quantum cascade laser, spectroscopy, heterodyne
Date issued
2016-05Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer ScienceJournal
Proceedings Volume 9854, Image Sensing Technologies: Materials, Devices, Systems, and Applications III
Publisher
SPIE
Citation
Lee, Alan W. et al. “Terahertz Imaging with Quantum Cascade Lasers.” Proceedings Volume 9854: Image Sensing Technologies: Materials, Devices, Systems, and Applications III, 17-21 April, 2016, Baltimore, Maryland, edited by Nibir K. Dhar and Achyut K. Dutta, SPIE, 2016, pp. 9629–9653 © 2016 Society of Photo-Optical Instrumentation Engineers (SPIE)
Version: Final published version