Degenerate optical nonlinear enhancement in epsilon-near-zero transparent conducting oxides

Carnemolla, E. G., Caspani, L., DeVault, C., Clerici, M. , Vezzoli, S., Bruno, V., Shalaev, V. M., Faccio, D. , Boltasseva, A. and Ferrera, M. (2018) Degenerate optical nonlinear enhancement in epsilon-near-zero transparent conducting oxides. Optical Materials Express, 8(11), pp. 3392-3400. (doi:10.1364/OME.8.003392)

[img]
Preview
Text
170788.pdf - Published Version
Available under License Creative Commons Attribution.

2MB

Abstract

We report the simultaneous increase of both nonlinear Kerr coefficient n2 and third-order nonlinear susceptibility X(a) in aluminum zinc oxide (AZO) attained by pumpprobe spectroscopy in a frequency degenerate configuration. Our experiments demonstrate a 6-fold enhancement in the third-order nonlinear susceptibility and over one order of magnitude increase in the nonlinear Kerr coefficient, while also determining two distinct operational wavelengths for optimal modulation of either the real or the imaginary part of the complex refractive index. These results, besides providing a broader spectral characterization of the third-order nonlinearity in AZO thin films, also show the fundamental advantages of performing nonlinear optics via degenerate excitation near the ENZ wavelength.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Bruno, Mr Vincenzo and Faccio, Professor Daniele and Clerici, Dr Matteo and Vezzoli, Dr Stefano
Authors: Carnemolla, E. G., Caspani, L., DeVault, C., Clerici, M., Vezzoli, S., Bruno, V., Shalaev, V. M., Faccio, D., Boltasseva, A., and Ferrera, M.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
College of Science and Engineering > School of Physics and Astronomy
Journal Name:Optical Materials Express
Publisher:Optical Society of America
ISSN:2159-3930
ISSN (Online):2159-3930
Published Online:17 October 2018
Copyright Holders:Copyright © 2018 The Optical Society
First Published:First published in Optical Materials Express 8(11): 3392-3400
Publisher Policy:Reproduced under a Creative Commons License
Data DOI:10.17861/f9701bb5-2534-4f91-bd25-2e605b22e0f0

University Staff: Request a correction | Enlighten Editors: Update this record

Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
3024590Infrared time-domain quantum opticsMatteo ClericiEngineering and Physical Sciences Research Council (EPSRC)EP/S001573/1ENG - Electronics & Nanoscale Engineering
3018050Polarisation Entangled Photon EmitterMatteo ClericiEngineering and Physical Sciences Research Council (EPSRC)EP/R043299/1ENG - Electronics & Nanoscale Engineering
3030220The Physics and Technology of Photonic Metadevices and MetasystemsDaniele FaccioEngineering and Physical Sciences Research Council (EPSRC)EP/M009122/2P&S - Physics & Astronomy