Cargando…

A magnetic non-reciprocal isolator for broadband terahertz operation

A Faraday isolator is an electromagnetic non-reciprocal device, a key element in photonics. It is required to shield electromagnetic sources against the effect of back-reflected light, as well as to limit the detrimental effect of back-propagating spontaneous emissions. A common isolator variant, th...

Descripción completa

Detalles Bibliográficos
Autores principales: Shalaby, Mostafa, Peccianti, Marco, Ozturk, Yavuz, Morandotti, Roberto
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Pub. Group 2013
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3615378/
https://www.ncbi.nlm.nih.gov/pubmed/23463001
http://dx.doi.org/10.1038/ncomms2572
_version_ 1782265005099450368
author Shalaby, Mostafa
Peccianti, Marco
Ozturk, Yavuz
Morandotti, Roberto
author_facet Shalaby, Mostafa
Peccianti, Marco
Ozturk, Yavuz
Morandotti, Roberto
author_sort Shalaby, Mostafa
collection PubMed
description A Faraday isolator is an electromagnetic non-reciprocal device, a key element in photonics. It is required to shield electromagnetic sources against the effect of back-reflected light, as well as to limit the detrimental effect of back-propagating spontaneous emissions. A common isolator variant, the circulator, is widely used to obtain a complete separation between forward- and backward-propagating waves, thus enabling the realization of a desired transfer function in reflection only. Here we demonstrate a non-reciprocal terahertz Faraday isolator, operating on a bandwidth exceeding one decade of frequency, a necessary requirement to achieve isolation with the (few-cycle) pulses generated by broadband sources. The exploited medium allows a broadband rotation, up to 194°/T, obtained using a SrFe(12)O(19) terahertz-transparent permanent magnet. This in turn enables the design of a stand-alone complete terahertz isolator without resorting to an external magnetic field bias, as opposed to all the optical isolators realized so far.
format Online
Article
Text
id pubmed-3615378
institution National Center for Biotechnology Information
language English
publishDate 2013
publisher Nature Pub. Group
record_format MEDLINE/PubMed
spelling pubmed-36153782013-04-03 A magnetic non-reciprocal isolator for broadband terahertz operation Shalaby, Mostafa Peccianti, Marco Ozturk, Yavuz Morandotti, Roberto Nat Commun Article A Faraday isolator is an electromagnetic non-reciprocal device, a key element in photonics. It is required to shield electromagnetic sources against the effect of back-reflected light, as well as to limit the detrimental effect of back-propagating spontaneous emissions. A common isolator variant, the circulator, is widely used to obtain a complete separation between forward- and backward-propagating waves, thus enabling the realization of a desired transfer function in reflection only. Here we demonstrate a non-reciprocal terahertz Faraday isolator, operating on a bandwidth exceeding one decade of frequency, a necessary requirement to achieve isolation with the (few-cycle) pulses generated by broadband sources. The exploited medium allows a broadband rotation, up to 194°/T, obtained using a SrFe(12)O(19) terahertz-transparent permanent magnet. This in turn enables the design of a stand-alone complete terahertz isolator without resorting to an external magnetic field bias, as opposed to all the optical isolators realized so far. Nature Pub. Group 2013-03-05 /pmc/articles/PMC3615378/ /pubmed/23463001 http://dx.doi.org/10.1038/ncomms2572 Text en Copyright © 2013, Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. http://creativecommons.org/licenses/by-nc-nd/3.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/3.0/
spellingShingle Article
Shalaby, Mostafa
Peccianti, Marco
Ozturk, Yavuz
Morandotti, Roberto
A magnetic non-reciprocal isolator for broadband terahertz operation
title A magnetic non-reciprocal isolator for broadband terahertz operation
title_full A magnetic non-reciprocal isolator for broadband terahertz operation
title_fullStr A magnetic non-reciprocal isolator for broadband terahertz operation
title_full_unstemmed A magnetic non-reciprocal isolator for broadband terahertz operation
title_short A magnetic non-reciprocal isolator for broadband terahertz operation
title_sort magnetic non-reciprocal isolator for broadband terahertz operation
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3615378/
https://www.ncbi.nlm.nih.gov/pubmed/23463001
http://dx.doi.org/10.1038/ncomms2572
work_keys_str_mv AT shalabymostafa amagneticnonreciprocalisolatorforbroadbandterahertzoperation
AT pecciantimarco amagneticnonreciprocalisolatorforbroadbandterahertzoperation
AT ozturkyavuz amagneticnonreciprocalisolatorforbroadbandterahertzoperation
AT morandottiroberto amagneticnonreciprocalisolatorforbroadbandterahertzoperation
AT shalabymostafa magneticnonreciprocalisolatorforbroadbandterahertzoperation
AT pecciantimarco magneticnonreciprocalisolatorforbroadbandterahertzoperation
AT ozturkyavuz magneticnonreciprocalisolatorforbroadbandterahertzoperation
AT morandottiroberto magneticnonreciprocalisolatorforbroadbandterahertzoperation