Phase-locked multi-terahertz electric fields exceeding 13 MV/cm at 190 kHz repetition rate
Abstract
We demonstrate a compact source of energetic and phase-locked multi-terahertz pulses at a repetition rate of 190 kHz. Difference frequency mixing of the fundamental output of an Yb:KGW amplifier with the idler of an optical parametric amplifier in GaSe and LiGaS2 crystals yields a passively phase-locked train of waveforms tunable between 12 and 42 THz. The shortest multi-terahertz pulses contain 1.8 oscillation cycles within the intensity FWHM. Pulse energies of up to 0.16 {\mu}J and peak electric fields of 13 MV/cm are achieved. Electro-optic sampling reveals a phase stability better than 0.1 over multiple hours combined with free CEP tunability. The scalable scheme opens the door to strong-field terahertz optics at unprecedented repetition rates.
Keywords
Cite
@article{arxiv.1712.04359,
title = {Phase-locked multi-terahertz electric fields exceeding 13 MV/cm at 190 kHz repetition rate},
author = {Matthias Knorr and Jürgen Raab and Maximilian Tauer and Philipp Merkl and Dominik Peller and Emanuel Wittmann and Eberhard Riedle and Christoph Lange and Rupert Huber},
journal= {arXiv preprint arXiv:1712.04359},
year = {2017}
}
Comments
6 pages, 5 figures \copyright 2017 Optical Society of America. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited