Nanophotonics

Experimental study of angular and frequency spectra of laser pulse diffraction on a planar periodic nanostructure of gold V antennas

M. V. Balabas, E. A. Efremova, A. Yu. Ivanov, A. I. Kantserov, I. R. Krylov, E. B. Pelyukhova, Yu. V. Petrov, U. V. Prokhorova, R. V. Silaev, O. Yu. Tret'yak, A. A. Shimko

Saint Petersburg State University

Abstract: Irradiation of a planar structure made of periodically spaced gold V antennas by a femtosecond pulsed laser has revealed several anomalously reflected and refracted waves, interpreted as diffraction maxima. Compression of the pulse spectrum in scattered light is observed. The degree of compression and wave polarisation are found to be determined by the scattering direction.

Keywords: metamaterial, nanoantennas, femtosecond pulse, planar optics, diffraction grating, left-handed media.

PACS: 42.25.Fx, 81.05.Xj, 78.67.Sc

Received: 20.02.2015
Revised: 07.06.2015

 English version: Quantum Electronics, 2015, 45:10, 914–916

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