Ultrafast polarization conversion with plasmonic crystals

Autor:	Shcherbakov, M. R., Vabishchevich, P. P., Komarova, V. V., Dolgova, T. V., Fedyanin, A. A.
Rok vydání:	2011
Předmět:	Physics - Optics
Zdroj:	Phys. Rev. Lett. 108, 253903 (2012)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevLett.108.253903
Popis:	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. Comment: 4 pages, 5 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1105.4730 Zobrazit plný text záznamu View this record from Arxiv