Investigation of coherent acoustic phonons in terahertz quantum cascade laser structures using femtosecond pump-probe spectroscopy

Autores
Bruchhausen, Axel Emerico; Lloyd Hughes, James; Hettich, Mike; Gebs, Raphael; Grossmann, Martin; Ristow, Oliver; Bartels, Albrecht; Fischer, Milan; Beck, Mattias; Scalari, Giacomo; Faist, Jérôme; Rudra, Alok; Gallo, Pascal; Kapon, Eli; Dekorsy, Thomas
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The dynamics of acoustic vibrations in terahertz quantum cascade laser structures (THz-QCLs) is studied by means of femtosecond pump-probe spectroscopy. The phonon modes are characterized by the folding of the acoustic dispersion into an effective reduced Brillouin zone. An accurate identification of this dispersion allows the sample structure and periodicity to be determined with high precision on the order of 0.1%. By temperature tuning the energy of the electronic levels of the system and performing wavelength dependent measurements, we are able to study the impulsive resonant generation and detection of coherent acoustic phonon modes. These results are supported by simulations of the electronic system that well explain the experimental observations. The effects of interface (IF) roughness on coherent acoustic phonon spectra are clearly observed for equal nominal THz-QCL structures but with different interface qualities.
Fil: Bruchhausen, Axel Emerico. University of Konstanz. Department of Physics and Center for Applied Photonics; Alemania. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Lloyd Hughes, James . University of Oxford; Reino Unido
Fil: Hettich, Mike . University of Konstanz. Department of Physics and Center for Applied Photonics; Alemania
Fil: Gebs, Raphael . University of Konstanz. Department of Physics and Center for Applied Photonics; Alemania
Fil: Grossmann, Martin . University of Konstanz. Department of Physics and Center for Applied Photonics; Alemania
Fil: Ristow, Oliver . University of Konstanz. Department of Physics and Center for Applied Photonics; Alemania
Fil: Bartels, Albrecht . University of Konstanz. Department of Physics and Center for Applied Photonics; Alemania
Fil: Fischer, Milan . Institute of Quantum Electronics; Suiza
Fil: Beck, Mattias . Institute of Quantum Electronics; Suiza
Fil: Scalari, Giacomo . Institute of Quantum Electronics; Suiza
Fil: Faist, Jérôme . Institute of Quantum Electronics; Suiza
Fil: Rudra, Alok . Ecole Polytechnique Federale de Lausanne; Suiza
Fil: Gallo, Pascal . Ecole Polytechnique Federale de Lausanne; Suiza
Fil: Kapon, Eli . Ecole Polytechnique Federale de Lausanne; Suiza
Fil: Dekorsy, Thomas . University of Konstanz. Department of Physics and Center for Applied Photonics; Alemania
Materia
High-speed optical techniques
Millimetre wave lasers
Visible spectroscopy
Quantum cascade lasers
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/11296
Acceder
id CONICETDig_5d4841f65d2fd9cfed333647605c6dcb
oai_identifier_str oai:ri.conicet.gov.ar:11336/11296
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Investigation of coherent acoustic phonons in terahertz quantum cascade laser structures using femtosecond pump-probe spectroscopyBruchhausen, Axel EmericoLloyd Hughes, James Hettich, Mike Gebs, Raphael Grossmann, Martin Ristow, Oliver Bartels, Albrecht Fischer, Milan Beck, Mattias Scalari, Giacomo Faist, Jérôme Rudra, Alok Gallo, Pascal Kapon, Eli Dekorsy, Thomas High-speed optical techniquesMillimetre wave lasersVisible spectroscopyQuantum cascade lasershttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1The dynamics of acoustic vibrations in terahertz quantum cascade laser structures (THz-QCLs) is studied by means of femtosecond pump-probe spectroscopy. The phonon modes are characterized by the folding of the acoustic dispersion into an effective reduced Brillouin zone. An accurate identification of this dispersion allows the sample structure and periodicity to be determined with high precision on the order of 0.1%. By temperature tuning the energy of the electronic levels of the system and performing wavelength dependent measurements, we are able to study the impulsive resonant generation and detection of coherent acoustic phonon modes. These results are supported by simulations of the electronic system that well explain the experimental observations. The effects of interface (IF) roughness on coherent acoustic phonon spectra are clearly observed for equal nominal THz-QCL structures but with different interface qualities.Fil: Bruchhausen, Axel Emerico. University of Konstanz. Department of Physics and Center for Applied Photonics; Alemania. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Lloyd Hughes, James . University of Oxford; Reino UnidoFil: Hettich, Mike . University of Konstanz. Department of Physics and Center for Applied Photonics; AlemaniaFil: Gebs, Raphael . University of Konstanz. Department of Physics and Center for Applied Photonics; AlemaniaFil: Grossmann, Martin . University of Konstanz. Department of Physics and Center for Applied Photonics; AlemaniaFil: Ristow, Oliver . University of Konstanz. Department of Physics and Center for Applied Photonics; AlemaniaFil: Bartels, Albrecht . University of Konstanz. Department of Physics and Center for Applied Photonics; AlemaniaFil: Fischer, Milan . Institute of Quantum Electronics; SuizaFil: Beck, Mattias . Institute of Quantum Electronics; SuizaFil: Scalari, Giacomo . Institute of Quantum Electronics; SuizaFil: Faist, Jérôme . Institute of Quantum Electronics; SuizaFil: Rudra, Alok . Ecole Polytechnique Federale de Lausanne; SuizaFil: Gallo, Pascal . Ecole Polytechnique Federale de Lausanne; SuizaFil: Kapon, Eli . Ecole Polytechnique Federale de Lausanne; SuizaFil: Dekorsy, Thomas . University of Konstanz. Department of Physics and Center for Applied Photonics; AlemaniaAmerican Institute Of Physics2012-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/11296Bruchhausen, Axel Emerico; Lloyd Hughes, James ; Hettich, Mike ; Gebs, Raphael ; Grossmann, Martin ; et al.; Investigation of coherent acoustic phonons in terahertz quantum cascade laser structures using femtosecond pump-probe spectroscopy; American Institute Of Physics; Journal of Applied Physics; 112; 8-2012; 33517-335170021-8979enginfo:eu-repo/semantics/altIdentifier/url/http://aip.scitation.org/doi/10.1063/1.4745044info:eu-repo/semantics/altIdentifier/doi/10.1063/1.4745044info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T12:17:27Zoai:ri.conicet.gov.ar:11336/11296instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 12:17:27.293CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Investigation of coherent acoustic phonons in terahertz quantum cascade laser structures using femtosecond pump-probe spectroscopy
title Investigation of coherent acoustic phonons in terahertz quantum cascade laser structures using femtosecond pump-probe spectroscopy
spellingShingle Investigation of coherent acoustic phonons in terahertz quantum cascade laser structures using femtosecond pump-probe spectroscopy
Bruchhausen, Axel Emerico
High-speed optical techniques
Millimetre wave lasers
Visible spectroscopy
Quantum cascade lasers
title_short Investigation of coherent acoustic phonons in terahertz quantum cascade laser structures using femtosecond pump-probe spectroscopy
title_full Investigation of coherent acoustic phonons in terahertz quantum cascade laser structures using femtosecond pump-probe spectroscopy
title_fullStr Investigation of coherent acoustic phonons in terahertz quantum cascade laser structures using femtosecond pump-probe spectroscopy
title_full_unstemmed Investigation of coherent acoustic phonons in terahertz quantum cascade laser structures using femtosecond pump-probe spectroscopy
title_sort Investigation of coherent acoustic phonons in terahertz quantum cascade laser structures using femtosecond pump-probe spectroscopy
dc.creator.none.fl_str_mv Bruchhausen, Axel Emerico
Lloyd Hughes, James
Hettich, Mike
Gebs, Raphael
Grossmann, Martin
Ristow, Oliver
Bartels, Albrecht
Fischer, Milan
Beck, Mattias
Scalari, Giacomo
Faist, Jérôme
Rudra, Alok
Gallo, Pascal
Kapon, Eli
Dekorsy, Thomas
author Bruchhausen, Axel Emerico
author_facet Bruchhausen, Axel Emerico
Lloyd Hughes, James
Hettich, Mike
Gebs, Raphael
Grossmann, Martin
Ristow, Oliver
Bartels, Albrecht
Fischer, Milan
Beck, Mattias
Scalari, Giacomo
Faist, Jérôme
Rudra, Alok
Gallo, Pascal
Kapon, Eli
Dekorsy, Thomas
author_role author
author2 Lloyd Hughes, James
Hettich, Mike
Gebs, Raphael
Grossmann, Martin
Ristow, Oliver
Bartels, Albrecht
Fischer, Milan
Beck, Mattias
Scalari, Giacomo
Faist, Jérôme
Rudra, Alok
Gallo, Pascal
Kapon, Eli
Dekorsy, Thomas
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv High-speed optical techniques
Millimetre wave lasers
Visible spectroscopy
Quantum cascade lasers
topic High-speed optical techniques
Millimetre wave lasers
Visible spectroscopy
Quantum cascade lasers
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The dynamics of acoustic vibrations in terahertz quantum cascade laser structures (THz-QCLs) is studied by means of femtosecond pump-probe spectroscopy. The phonon modes are characterized by the folding of the acoustic dispersion into an effective reduced Brillouin zone. An accurate identification of this dispersion allows the sample structure and periodicity to be determined with high precision on the order of 0.1%. By temperature tuning the energy of the electronic levels of the system and performing wavelength dependent measurements, we are able to study the impulsive resonant generation and detection of coherent acoustic phonon modes. These results are supported by simulations of the electronic system that well explain the experimental observations. The effects of interface (IF) roughness on coherent acoustic phonon spectra are clearly observed for equal nominal THz-QCL structures but with different interface qualities.
Fil: Bruchhausen, Axel Emerico. University of Konstanz. Department of Physics and Center for Applied Photonics; Alemania. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Lloyd Hughes, James . University of Oxford; Reino Unido
Fil: Hettich, Mike . University of Konstanz. Department of Physics and Center for Applied Photonics; Alemania
Fil: Gebs, Raphael . University of Konstanz. Department of Physics and Center for Applied Photonics; Alemania
Fil: Grossmann, Martin . University of Konstanz. Department of Physics and Center for Applied Photonics; Alemania
Fil: Ristow, Oliver . University of Konstanz. Department of Physics and Center for Applied Photonics; Alemania
Fil: Bartels, Albrecht . University of Konstanz. Department of Physics and Center for Applied Photonics; Alemania
Fil: Fischer, Milan . Institute of Quantum Electronics; Suiza
Fil: Beck, Mattias . Institute of Quantum Electronics; Suiza
Fil: Scalari, Giacomo . Institute of Quantum Electronics; Suiza
Fil: Faist, Jérôme . Institute of Quantum Electronics; Suiza
Fil: Rudra, Alok . Ecole Polytechnique Federale de Lausanne; Suiza
Fil: Gallo, Pascal . Ecole Polytechnique Federale de Lausanne; Suiza
Fil: Kapon, Eli . Ecole Polytechnique Federale de Lausanne; Suiza
Fil: Dekorsy, Thomas . University of Konstanz. Department of Physics and Center for Applied Photonics; Alemania
description The dynamics of acoustic vibrations in terahertz quantum cascade laser structures (THz-QCLs) is studied by means of femtosecond pump-probe spectroscopy. The phonon modes are characterized by the folding of the acoustic dispersion into an effective reduced Brillouin zone. An accurate identification of this dispersion allows the sample structure and periodicity to be determined with high precision on the order of 0.1%. By temperature tuning the energy of the electronic levels of the system and performing wavelength dependent measurements, we are able to study the impulsive resonant generation and detection of coherent acoustic phonon modes. These results are supported by simulations of the electronic system that well explain the experimental observations. The effects of interface (IF) roughness on coherent acoustic phonon spectra are clearly observed for equal nominal THz-QCL structures but with different interface qualities.
publishDate 2012
dc.date.none.fl_str_mv 2012-08
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/11296
Bruchhausen, Axel Emerico; Lloyd Hughes, James ; Hettich, Mike ; Gebs, Raphael ; Grossmann, Martin ; et al.; Investigation of coherent acoustic phonons in terahertz quantum cascade laser structures using femtosecond pump-probe spectroscopy; American Institute Of Physics; Journal of Applied Physics; 112; 8-2012; 33517-33517
0021-8979
url http://hdl.handle.net/11336/11296
identifier_str_mv Bruchhausen, Axel Emerico; Lloyd Hughes, James ; Hettich, Mike ; Gebs, Raphael ; Grossmann, Martin ; et al.; Investigation of coherent acoustic phonons in terahertz quantum cascade laser structures using femtosecond pump-probe spectroscopy; American Institute Of Physics; Journal of Applied Physics; 112; 8-2012; 33517-33517
0021-8979
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://aip.scitation.org/doi/10.1063/1.4745044
info:eu-repo/semantics/altIdentifier/doi/10.1063/1.4745044
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Institute Of Physics
publisher.none.fl_str_mv American Institute Of Physics
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1846782599731609600
score 12.982451

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