Ultrafast polarization conversion with plasmonic crystals
Abstract
Femtosecond-scale polarization state conversion is experimentally found in optical response of a plasmonic nanograting by means of time-resolved polarimetry. Simultaneous measurements of the Stokes parameters as a function of time with an averaging time-gate of 130 fs reveal a remarkable alteration of polarization state inside a single fs-pulse reflected from a plasmonic crystal. Time-dependent depolarization is experimentally found and described within an analytical model which predicts the four-fold enhancement of the polarization conversion effect with the use of the narrower gate. The effect is attributed to excitation of time-delayed polarization-sensitive surface plasmons with a highly birefringent Fano-type spectral profile.
Cite
@article{arxiv.1105.4730,
title = {Ultrafast polarization conversion with plasmonic crystals},
author = {M. R. Shcherbakov and P. P. Vabishchevich and V. V. Komarova and T. V. Dolgova and A. A. Fedyanin},
journal= {arXiv preprint arXiv:1105.4730},
year = {2014}
}
Comments
4 pages, 5 figures