Terahertz aqueous photonics

Abstract

Contributors and Funding Sources xiv List of Figures xviTABLE OF CONTENTS v 3.2 Experimental Setup of the Two-Color Excitation Scheme . . .

Terahertz generation from laser-induced plasma

“…In most of the experiments, the linear dependence of THz intensity on the energy of laser pulse was observed before the saturation of THz signal 144,146 . However, there are measurements revealing that the THz energy scales quasi-quadratically with the optical pulse energy 146,147,154 . The difference of the observed dependence may result from the liquid target geometry and the excitation energy of the laser pulse.…”

Enhancement of Terahertz Emission by Silver Nanoparticles in a Liquid Medium

“…Laser-induced air plasma has been one of the most important terahertz sources in the last two decades, since it is cost-effective, simple in its structure, and does not cause permanent damage [ 1 , 2 , 3 , 4 , 5 ]. Liquids have a higher molecular density, lower ionization potential, and better self-healing properties compared with gases, so liquids have been demonstrated as a preferable medium for terahertz emission [ 6 , 7 , 8 , 9 , 10 ]. Since the first experiment of terahertz radiation from liquid water was performed [ 11 , 12 ], many approaches have been proposed to optimize experimental systems and boost terahertz radiation, such as multicolor excitation [ 13 ], double-pump excitation [ 14 , 15 ], tailoring laser beams [ 16 ], and so on.…”

Ti3C2Tx MXene‐Based Superhydrophobic Broadband Terahertz Absorber with Large Pore‐Size Foam Architecture

“…[ 4 ] Over the last decades, the field of THz has grown from a promising curiosity to a thriving research discipline, with ever‐increasing commercial application and scientific impact. [ 5,6 ] The use of THz spectroscopy for remote sensing, [ 7 ] astronomical detection [ 8 ] and cosmic background observations [ 9 ] has a long history, giving birth to ambitious programs such as ALMA, [ 10 ] CSO, [ 11 ] Planck [ 12 ] and CubeSat [ 13 ] mission, etc. The field of THz imaging has also been maturing and commercial equipment has been deployed in some airports and railway stations for security screening.…”