Broadband terahertz emission from two-color fs-laser-induced microplasmas
Optics
2017-11-15 v1
Abstract
We investigate terahertz emission from two-color fs-laser-induced microplasmas. Under strongest focusing conditions, microplasmas are shown to act as point-sources for broadband terahertz-to-far-infrared radiation, where the emission bandwidth is determined by the plasma density. Semi-analytical modeling allows us to identify scaling laws with respect to important laser parameters. In particular, we find that the optical-to-THz conversion efficiency crucially depends on the focusing conditions. We use this insight to demonstrate by means of Maxwell-consistent 3D simulations, that for only 10-J laser energy a conversion efficiency well above can be achieved.
Cite
@article{arxiv.1703.10949,
title = {Broadband terahertz emission from two-color fs-laser-induced microplasmas},
author = {Illia Thiele and Pedro Gonzalez de Alaiza Martinez and Rachel Nuter and Alisee Nguyen and Luc Berge and Stefan Skupin},
journal= {arXiv preprint arXiv:1703.10949},
year = {2017}
}