Terahertz imaging with quantum cascade lasers

Alan W. Lee; Tsung-Yu Kao; Ian A. Zimmerman; Naoki Oda; Qing Hu

doi:10.1117/12.2224140

26 May 2016 Terahertz imaging with quantum cascade lasers

Alan W. Lee, Tsung-Yu Kao, Ian A. Zimmerman, Naoki Oda, Qing Hu

Proceedings Volume 9854, Image Sensing Technologies: Materials, Devices, Systems, and Applications III; 98540R (2016) https://doi.org/10.1117/12.2224140
Event: SPIE Commercial + Scientific Sensing and Imaging, 2016, Baltimore, MD, United States

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.

Citation Download Citation

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

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