Space-time wave packets propagating a kilometer in air
Optics
2022-09-08 v1
Abstract
We report on the diffraction-free propagation of space-time wave packets (STWPs) -- a class of propagation-invariant pulsed beams -- for km in an open-air laser range in a low-turbulence scenario. Making use of -fs pulses (bandwidth nm) at a wavelength of m, we construct an STWP with a transverse width of mm that expands to mm after m, and another that expands from mm to mm after 1 km. The propagation of the STWPs is compared to Gaussian wave packets of the same transverse spatial width and bandwidth. We establish a theoretical model that accounts for the significant factors limiting the STWP propagation distance and suggests the path to further extending this distance.
Cite
@article{arxiv.2209.03309,
title = {Space-time wave packets propagating a kilometer in air},
author = {Layton A. Hall and Miguel A. Romer and Bryan L. Turo and Tina M. Hayward and Rajesh Menon and Ayman F. Abouraddy},
journal= {arXiv preprint arXiv:2209.03309},
year = {2022}
}