26 May 2016 Terahertz imaging with quantum cascade lasers
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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.
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Alan W. Lee, Alan W. Lee, Tsung-Yu Kao, Tsung-Yu Kao, Ian A. Zimmerman, Ian A. Zimmerman, Naoki Oda, Naoki Oda, Qing Hu, Qing Hu, "Terahertz imaging with quantum cascade lasers", Proc. SPIE 9854, Image Sensing Technologies: Materials, Devices, Systems, and Applications III, 98540R (26 May 2016); doi: 10.1117/12.2224140; https://doi.org/10.1117/12.2224140
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