Subwavelength focusing inside an open disordered medium by time reversal at a single point antenna
Optics
2015-06-12 v2
Abstract
We study theoretically light focusing at subwavelength scale inside a disordered strongly scattering open medium. We show that broadband time reversal at a single point antenna, in conjunction with near-field interactions and multiple scattering, produces spatial focusing with a quality comparable to that obtained in an ideal closed cavity. This gives new perspectives for super-resolved optical imaging and coherent control of single nanosources or absorbers in complex media.
Keywords
Cite
@article{arxiv.1211.5320,
title = {Subwavelength focusing inside an open disordered medium by time reversal at a single point antenna},
author = {Romain Pierrat and Cédric Vandenbem and Mathias Fink and Rémi Carminati},
journal= {arXiv preprint arXiv:1211.5320},
year = {2015}
}