Boosting terahertz-radiation power with two-color circularly polarized midinfrared laser pulses
Abstract
A way to considerably enhance terahertz radiation, emitted in the interaction of intense mid-infrared laser pulses with atomic gases, in both the total energy and the electric-field amplitude is suggested. The scheme is based on the application of a two-color field consisting of a strong circularly polarized mid-infrared pulse with wavelengths of and its linearly or circularly polarized second harmonic of lower intensity. By combining the strong-field approximation for the ionization of a single atom with particle-in-cell simulations of the collective dynamics of the generated plasma it is shown that the application of such two-color circularly polarized laser pulses may lead to an order-of-magnitude increase in the energy emitted in the terahertz frequency domain as well as in a considerable enhancement in the maximal electric field of the terahertz pulse. Our results support recently reported experimental and numerical findings.
Keywords
Cite
@article{arxiv.1810.08834,
title = {Boosting terahertz-radiation power with two-color circularly polarized midinfrared laser pulses},
author = {V. A. Tulsky and M. Baghery and U. Saalmann and S. V. Popruzhenko},
journal= {arXiv preprint arXiv:1810.08834},
year = {2018}
}
Comments
9 pages, 6 figures