27 March 2013 3D terahertz beam profiling
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Abstract
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, Andrew C. Strikwerda, Tianwu Wang, Maksim Zalkovskij, 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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