Experimental study of speckle patterns generated by low-coherence semiconductor laser light

Speckle is a wave interference phenomenon that has been studied in various fields, including optics, hydrodynamics, and acoustics. Speckle patterns contain spectral information of the interfering waves and of the scattering medium that generates the pattern. Here, we study experimentally the speckle...

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Autores: Halpaap Halpaap, Herbert Donatus, Marconi, Mathias, Yacomotti, Alejandro M., Tiana Alsina, Jordi|||0000-0001-8359-9378, Masoller Alonso, Cristina|||0000-0003-0768-2019
Tipo de recurso: artículo
Fecha de publicación:2020
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/329164
Acceso en línea:https://hdl.handle.net/2117/329164
https://dx.doi.org/10.1063/5.0006007
Access Level:acceso abierto
Palabra clave:Semiconductor lasers
Signal processing
Interference (Light)
Instabilities and Nonequilibrium Structures
Coherence
Interference
Optical properties
Làsers de semiconductors
Tractament del senyal
Interferència (Llum)
Àrees temàtiques de la UPC::Física
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spelling Experimental study of speckle patterns generated by low-coherence semiconductor laser lightHalpaap Halpaap, Herbert DonatusMarconi, MathiasYacomotti, Alejandro M.Tiana Alsina, Jordi|||0000-0001-8359-9378Masoller Alonso, Cristina|||0000-0003-0768-2019Semiconductor lasersSignal processingInterference (Light)Instabilities and Nonequilibrium StructuresCoherenceSemiconductor lasersSignal processingInterferenceOptical propertiesLàsers de semiconductorsTractament del senyalInterferència (Llum)Àrees temàtiques de la UPC::FísicaSpeckle is a wave interference phenomenon that has been studied in various fields, including optics, hydrodynamics, and acoustics. Speckle patterns contain spectral information of the interfering waves and of the scattering medium that generates the pattern. Here, we study experimentally the speckle patterns generated by the light emitted by two types of semiconductor lasers: conventional laser diodes, where we induce low-coherence emission by optical feedback or by pump current modulation, and coupled nanolasers. In both cases, we analyze the intensity statistics of the respective speckle patterns to inspect the degree of coherence of the light. We show that the speckle analysis provides a non-spectral way to assess the coherence of semiconductor laser light.Institute of Physics (IOP)20202020-06-0120202020-09-23journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/329164https://dx.doi.org/10.1063/5.0006007reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivs 3.0 Spainhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/3291642026-05-27T15:37:01Z
dc.title.none.fl_str_mv Experimental study of speckle patterns generated by low-coherence semiconductor laser light
title Experimental study of speckle patterns generated by low-coherence semiconductor laser light
spellingShingle Experimental study of speckle patterns generated by low-coherence semiconductor laser light
Halpaap Halpaap, Herbert Donatus
Semiconductor lasers
Signal processing
Interference (Light)
Instabilities and Nonequilibrium Structures
Coherence
Semiconductor lasers
Signal processing
Interference
Optical properties
Làsers de semiconductors
Tractament del senyal
Interferència (Llum)
Àrees temàtiques de la UPC::Física
title_short Experimental study of speckle patterns generated by low-coherence semiconductor laser light
title_full Experimental study of speckle patterns generated by low-coherence semiconductor laser light
title_fullStr Experimental study of speckle patterns generated by low-coherence semiconductor laser light
title_full_unstemmed Experimental study of speckle patterns generated by low-coherence semiconductor laser light
title_sort Experimental study of speckle patterns generated by low-coherence semiconductor laser light
dc.creator.none.fl_str_mv Halpaap Halpaap, Herbert Donatus
Marconi, Mathias
Yacomotti, Alejandro M.
Tiana Alsina, Jordi|||0000-0001-8359-9378
Masoller Alonso, Cristina|||0000-0003-0768-2019
author Halpaap Halpaap, Herbert Donatus
author_facet Halpaap Halpaap, Herbert Donatus
Marconi, Mathias
Yacomotti, Alejandro M.
Tiana Alsina, Jordi|||0000-0001-8359-9378
Masoller Alonso, Cristina|||0000-0003-0768-2019
author_role author
author2 Marconi, Mathias
Yacomotti, Alejandro M.
Tiana Alsina, Jordi|||0000-0001-8359-9378
Masoller Alonso, Cristina|||0000-0003-0768-2019
author2_role author
author
author
author
dc.subject.none.fl_str_mv Semiconductor lasers
Signal processing
Interference (Light)
Instabilities and Nonequilibrium Structures
Coherence
Semiconductor lasers
Signal processing
Interference
Optical properties
Làsers de semiconductors
Tractament del senyal
Interferència (Llum)
Àrees temàtiques de la UPC::Física
topic Semiconductor lasers
Signal processing
Interference (Light)
Instabilities and Nonequilibrium Structures
Coherence
Semiconductor lasers
Signal processing
Interference
Optical properties
Làsers de semiconductors
Tractament del senyal
Interferència (Llum)
Àrees temàtiques de la UPC::Física
description Speckle is a wave interference phenomenon that has been studied in various fields, including optics, hydrodynamics, and acoustics. Speckle patterns contain spectral information of the interfering waves and of the scattering medium that generates the pattern. Here, we study experimentally the speckle patterns generated by the light emitted by two types of semiconductor lasers: conventional laser diodes, where we induce low-coherence emission by optical feedback or by pump current modulation, and coupled nanolasers. In both cases, we analyze the intensity statistics of the respective speckle patterns to inspect the degree of coherence of the light. We show that the speckle analysis provides a non-spectral way to assess the coherence of semiconductor laser light.
publishDate 2020
dc.date.none.fl_str_mv 2020
2020-06-01
2020
2020-09-23
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/329164
https://dx.doi.org/10.1063/5.0006007
url https://hdl.handle.net/2117/329164
https://dx.doi.org/10.1063/5.0006007
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Institute of Physics (IOP)
publisher.none.fl_str_mv Institute of Physics (IOP)
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300719

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