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Authors: Michael Scalora 1 ; Maria Vincenti 2 ; Domenico de Ceglia 1 ; Neset Akozbek 3 ; Mark Bloemer 1 ; Jose Trull 4 and Crina Cojocaru 4

Affiliations: 1 Charles M. Bowden Research Center, United States ; 2 University of Brescia, Italy ; 3 AEgis Technologies, United States ; 4 Universitat Politècnica de Catalunya, Spain

Keyword(s): Harmonic Generation, Nonlinear Frequency Conversion, Plasmonics, Electron Cloud, Metal Optics.

Abstract: We discuss a dynamical model of harmonic generation that arises from surfaces that demarcate regions of discontinuous free electron densities. These circumstances can arise from a simple metal mirror, to more complex structures such as layered structures composed of different metals or a metal and a conducting oxide. Using a modified hydrodynamic model we examine the simple case of a metal mirror, assuming the surface is characterized by an electron cloud that spills out into vacuum and shields the internal portions of the remaining medium. We also assess the relative importance of additional nonlinear sources that arise when a free electron discontinuity is present, and show that under the right circumstances both second and third harmonic generation can be very sensitive to the nature, density and thickness of the free electron cloud. Our findings suggest the possibility to control surface harmonic generation through surface charge engineering.

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Paper citation in several formats:
Scalora, M.; Vincenti, M.; de Ceglia, D.; Akozbek, N.; Bloemer, M.; Trull, J. and Cojocaru, C. (2018). The Role of a Discontinuous Free-Electron Density in Harmonic Generation from Metal Surfaces. In Proceedings of the 6th International Conference on Photonics, Optics and Laser Technology - PHOTOPTICS; ISBN 978-989-758-286-8; ISSN 2184-4364, SciTePress, pages 98-104. DOI: 10.5220/0006645800980104

@conference{photoptics18,
author={Michael Scalora. and Maria Vincenti. and Domenico {de Ceglia}. and Neset Akozbek. and Mark Bloemer. and Jose Trull. and Crina Cojocaru.},
title={The Role of a Discontinuous Free-Electron Density in Harmonic Generation from Metal Surfaces},
booktitle={Proceedings of the 6th International Conference on Photonics, Optics and Laser Technology - PHOTOPTICS},
year={2018},
pages={98-104},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0006645800980104},
isbn={978-989-758-286-8},
issn={2184-4364},
}

TY - CONF

JO - Proceedings of the 6th International Conference on Photonics, Optics and Laser Technology - PHOTOPTICS
TI - The Role of a Discontinuous Free-Electron Density in Harmonic Generation from Metal Surfaces
SN - 978-989-758-286-8
IS - 2184-4364
AU - Scalora, M.
AU - Vincenti, M.
AU - de Ceglia, D.
AU - Akozbek, N.
AU - Bloemer, M.
AU - Trull, J.
AU - Cojocaru, C.
PY - 2018
SP - 98
EP - 104
DO - 10.5220/0006645800980104
PB - SciTePress

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