Open AccessTunable narrowband THz pulse generation in scalable large area photoconductive antennas
Author(s) -
Johannes Krause,
Martin Wagner,
Stephan Winnerl,
Manfred Helm,
D. Stehr
Publication year - 2011
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.19.019114
Subject(s) - terahertz radiation , narrowband , optics , common emitter , optoelectronics , materials science , electric field , excitation , physics , quantum mechanics
The generation and characterization of narrowband THz pulses by means of chirped pulse difference frequency generation in Auston-switch type photoconductive antennas is reported. Using optical pulses with energies in the range from 1 nJ to 1 µJ, we generate THz pulses with up to 50 pJ in energy and electric field strengths on the order of 1 kV/cm. Two emitter concepts are investigated and circumvention of the fast saturation for small area excitation by scaling of the THz emitter is demonstrated.