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.
Proceedings of Spie, the International Society for Optical Engineering, 2013, Vol 8624
THz; Beam profiling; THz camera; 3D beam visualization
Main Research Area:
SPIE Photonics West : Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications VI, 2013