Diffraction of ultrashort pulse on a nanoscale conductive cone


Surface plasmon polariton is collective oscillation of the free electrons at metal dielectric interface. As a wave phenomenon, surface plasmon polaritons can be focused using appropiate excitation geometry of metallic structures. We theoretically demonstrate the possibility of controlling nanoscale short pulse superfocusing based on the generation of radially polarized surface plasmon polariton mode of conical metallic tip. Numerical simulation for femtosecond pulse propagation along a silver nano-needle is discussed. The spatial distribution for a near field strongly depends on a linear chirp of the laser pulse which can partially compensate the wave dispersion. Field distribution is calculated for different chirp values, opening angle 0.1, distances ri = 1000 nm and rf = 250 nm. For a pulse with a chirp β =-0.013 fs1, pulse duration becomes shorter and changes from 32 fs to 18.8 fs, and field amplification is equal to 42.7.

Publication DOI: https://doi.org/10.1109/DD.2015.7354844
Divisions: College of Engineering & Physical Sciences > Aston Institute of Photonics Technology (AIPT)
Additional Information: © 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Event Title: International Conference Days on Diffraction, DD 2015
Event Type: Other
Event Dates: 2015-05-25 - 2015-05-29
Uncontrolled Keywords: Chirp,Nanoscale devices,Optical pulse shaping,Optical surface waves,Plasmons,Surface waves,Ultrafast optics,Electronic, Optical and Magnetic Materials,Electrical and Electronic Engineering,Acoustics and Ultrasonics,Radiation,Surfaces and Interfaces
ISBN: 9781467386357
Last Modified: 08 Jan 2024 09:58
Date Deposited: 14 Oct 2019 12:29
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Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
https://ieeexpl ... ocument/7354844 (Publisher URL)
PURE Output Type: Conference contribution
Published Date: 2015-12-11
Authors: Golovinski, P. A.
Astapenko, V. A.
Manuylovich, E. S. (ORCID Profile 0000-0002-5722-0122)



Version: Accepted Version

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