Ultra-compact synthesis of space-time wave packets
Abstract
Space-time wave packets (STWPs) are pulsed fields in which a strictly prescribed association between the spatial and temporal frequencies yields surprising and useful behavior. However, STWPs to date have been synthesized using bulky free-space optical systems that require precise alignment. We describe a compact system that makes use of a novel optical component: a chirped volume Bragg grating that is rotated by 45 degrees with respect to the plane-parallel device facets. By virtue of this grating's unique structure, cascaded gratings resolve and recombine the spectrum without free-space propagation or collimation. We produce STWPs by placing a phase plate that spatially modulates the resolved spectrum between such cascaded gratings, with a device volume of 25x25x8 mm3, which is orders of magnitude smaller than previous arrangements.
Keywords
Cite
@article{arxiv.2212.12091,
title = {Ultra-compact synthesis of space-time wave packets},
author = {Murat Yessenov and Oussama Mhibik and Lam Mach and Tina M. Hayward and Rajesh Menon and Leonid Glebov and Ivan Divliansky and Ayman F. Abouraddy},
journal= {arXiv preprint arXiv:2212.12091},
year = {2023}
}
Comments
5 pages, 5 figures