Related Experiment Video
Updated: Jun 11, 2026
Design, Fabrication, and Experimental Characterization of Plasmonic Photoconductive Terahertz Emitters
Published on: July 8, 2013
Impulsive terahertz radiation with high electric fields from an amplifier-driven large-area photoconductive antenna
1Department of Physics and Center for Applied Photonics, University of Konstanz, D-78457 Konstanz, Germany. Matthias.Beck@uni-konstanz.de
Abstract:
We report on the generation of impulsive terahertz (THz) radiation with 36 kV/cm vacuum electric field (1.5 mW average thermal power) at 250 kHz repetition rate and a high NIR-to-THz conversion efficiency of 2 x 10(-3). This is achieved by photoexciting biased large-area photoconductive emitter with NIR fs pulses of microJ pulse energy. We demonstrate focussing of the THz beam by tailoring the pulse front of the exciting laser beam without any focussing element for the THz beam. A high dynamic range of 10(4) signal-to-noise is obtained with an amplifier based system.
