Phase Conjugation and Negative Refraction Using Nonlinear Active Metamaterials
Optics
2010-09-20 v1
Abstract
We present experimental demonstration of phase conjugation using nonlinear metamaterial elements. Active split-ring resonators loaded with varactor diodes are demonstrated theoretically to act as phase-conjugating or time-reversing discrete elements when parametrically pumped and illuminated with appropriate frequencies. The metamaterial elements were fabricated and shown experimentally to produce a time reversed signal. Measurements confirm that a discrete array of phase-conjugating elements act as a negatively-refracting time reversal RF lens only 0.12 thick.
Cite
@article{arxiv.1008.1999,
title = {Phase Conjugation and Negative Refraction Using Nonlinear Active Metamaterials},
author = {Alexander R. Katko and Shi Gu and John P. Barrett and Bogdan-Ioan Popa and Gennady Shvets and Steven A. Cummer},
journal= {arXiv preprint arXiv:1008.1999},
year = {2010}
}