Few-Cycle Surface Plasmon Polariton Generation by Rotating Wavefront Pulses

Year: 2018

Authors: Pisani F., Fedeli L., Macchi A.

Autors Affiliation: 1) Enrico Fermi Department of Physics, University of Pisa, 56127 Pisa, Italy
2) Department of Energy, Politecnico di Milano, 20133 Milano, Italy
3) National Institute of Optics, National Research Council (CNR/INO), A.Gozzini unit, 56124 Pisa, Italy

Abstract: A concept for the efficient generation of surface plasmon polaritons (SPPs) with ultrashort duration close to the single-cycle limit is presented. The scheme is based on grating coupling and laser pulses with wavefront rotation (WFR), so that the resonance condition for SPP excitation is satisfied only for a time window shorter than the driving pulse. The feasibility and robustness of the technique is investigated by means of simulations with realistic parameters. In optimal conditions, we find that a 29.5 fs pulse with an 800 nm wavelength can excite SPPs with <4 fs duration (∼1.5 laser cycles) and a peak field amplitude ∼2.7 times the peak value for the laser pulse. Journal/Review: ACS PHOTONICS

Volume: 5 (3)      Pages from: 1068  to: 1073

KeyWords: plasmonics; ultrafast optics; rotating wavefront; few-cycle pulses;
DOI: 10.1021/acsphotonics.7b01347

Citations: 7
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