1 Department of Photonics Engineering, Technical University of Denmark2 Teraherts Technologies and Biophotonics, Department of Photonics Engineering, Technical University of Denmark3 Plasmonics and Metamaterials, Department of Photonics Engineering, Technical University of Denmark4 Center for Nanostructured Graphene, Center, Technical University of Denmark
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