29 May 2001 Terahertz imaging and spectroscopy of human skin in vivo
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We demonstrate the application of terahertz pulse imaging for the in-vivo study of human tissue, in this case the upper layers of human skin. The terahertz pulses comprise frequencies from below 100 GHz to over 2 THz and are generated using optical pulse excited semiconductor devices with a conversion efficiency of better than 10-3. The terahertz pulses are used to obtain tomographic information on the skin surface tissue. From the data the stratum corneum thickness and hydration may be mapped or cross-sectional images displayed.
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Bryan E. Cole, Ruth M. Woodward, David A. Crawley, Vincent P. Wallace, Donald D. Arnone, Michael Pepper, "Terahertz imaging and spectroscopy of human skin in vivo", Proc. SPIE 4276, Commercial and Biomedical Applications of Ultrashort Pulse Lasers; Laser Plasma Generation and Diagnostics, (29 May 2001); doi: 10.1117/12.428010; https://doi.org/10.1117/12.428010

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