Affiliation:
1. Radboud University
2. MIREA – Russian Technological University
3. Tver State University
Abstract
The effect of optical rectification (OR) in the terahertz range (THz
rectification, TR) is experimentally demonstrated. The effect consists
of generating a DC voltage on the faces of a ferroelectric triglycine
sulfate (TGS) single crystal under the action of pulsed radiation with
a frequency of 1.57 and 1.96 THz and an electric field strength per
pulse of 1.3 and 1.5 MV/m, respectively.
The FLARE FELIX free-electron laser system (Radboud University, The
Netherlands) was used as a THz radiation source. The TR effect makes
it possible to directly determine the nonlinear susceptibilities of
media (including those under conditions of strong absorption) without
any reference or optical channel calibration and also without the need
of Fourier transform.
Funder
Russian Science Foundation
Ministry of Education and Science of the
Russian Federation
Nederlandse Organisatie voor
Wetenschappelijk Onderzoek
European Research Council
Subject
Atomic and Molecular Physics, and Optics