27 March 2013 3D terahertz beam profiling
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We present a characterization of THz beams generated in both a two-color air plasma and in a LiNbO3 crystal. Using a commercial THz camera, we record intensity images as a function of distance through the beam waist, from which we extract 2D beam profiles and visualize our measurements into 3D beam profiles. For the two-color air-plasma, we measure a conical beam profile that is focused to a bell-shape at the beam waist, whereas we observe a Gaussian beam profile for the THz beam generated from the LiNbO3 crystal.
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Pernille Klarskov, Pernille Klarskov, Andrew C. Strikwerda, Andrew C. Strikwerda, Tianwu Wang, Tianwu Wang, Maksim Zalkovskij, Maksim Zalkovskij, Peter Uhd. Jepsen, Peter Uhd. Jepsen, "3D terahertz beam profiling", Proc. SPIE 8624, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications VI, 86240D (27 March 2013); doi: 10.1117/12.2002009; https://doi.org/10.1117/12.2002009

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