Adiabatic frequency shifting in epsilon-near-zero materials: the role of group velocity

Khurgin, J. B. et al. (2020) Adiabatic frequency shifting in epsilon-near-zero materials: the role of group velocity. Optica, 7(3), pp. 226-231. (doi: 10.1364/OPTICA.374788)

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Abstract

The conversion of a photon’s frequency has long been a key application area of nonlinear optics. It has been discussed how a slow temporal variation of a material’s refractive index can lead to the adiabatic frequency shift (AFS) of a pulse spectrum. Such a rigid spectral change has relevant technological implications, for example, in ultrafast signal processing. Here, we investigate the AFS process in epsilon-near-zero (ENZ) materials and show that the frequency shift can be achieved in a shorter length if operating in the vicinity of Re{

Item Type:Articles
Additional Information:National Science Foundation (1741694); UK Research and Innovation (EP/S001573/1); Air Force Office of Scientific Research (FA9550-1-18-0151, FA9550-18-1- 0002); Engineering and Physical Sciences Research Council (EP/P019994/1, EP/P006078/2); Defense Advanced Research Projects Agency (HR00111820063); U.S. Department of Energy (DE-SC0017717); Royal Society (RGS/R1/191426); Office of Naval Research (N00014-20-1-2199).
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Bruno, Mr Vincenzo and Clerici, Dr Matteo and Faccio, Professor Daniele
Authors: Khurgin, J. B., Clerici, M., Bruno, V., Caspani, L., DeVault, C., Kim, J., Shaltout, A., Boltasseva, A., Shalaev, V. M., Ferrera, M., Faccio, D., and Kinsey, N.
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:Optica
Publisher:The Optical Society
ISSN:2334-2536
ISSN (Online):2334-2536
Copyright Holders:Copyright © 2020 Optical Society of America
First Published:First published in Optica 7(3):226-231
Publisher Policy:Reproduced under a Creative Commons License
Data DOI:10.5525/gla.researchdata.954

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
302459Infrared time-domain quantum opticsMatteo ClericiEngineering and Physical Sciences Research Council (EPSRC)EP/S001573/1ENG - Electronics & Nanoscale Engineering
303021Black Hole Superradiance in Rotating Fluids (SURF)Daniele FaccioEngineering and Physical Sciences Research Council (EPSRC)EP/P006078/2P&S - Physics & Astronomy