Multicolor femtosecond pump-probe system with single-electron sensitivity at low temperatures and high magnetic fields

Loading...
Thumbnail Image
Date
2019
Editors
Contact
Journal ISSN
Electronic ISSN
ISBN
Bibliographical data
Publisher
Series
DOI (citable link)
ArXiv-ID
International patent number
Link to the license
EU project number
Project
Open Access publication
Collections
Restricted until
Title in another language
Research Projects
Organizational Units
Journal Issue
Publication type
Journal article
Publication status
Published
Published in
Review of scientific instruments ; 90 (2019), 12. - 123003. - ISSN 0034-6748. - eISSN 1089-7623
Abstract
We present an ultrafast spectroscopy system designed for temporal and spectral resolution of transient transmission changes after excitation of single electrons in solid-state quantum structures. The system is designed for optimum long-term stability, offering the option of hands-off operation over several days. Pump and probe pulses are generated in a versatile Er:fiber laser system where visible photon energies may be tuned independently from 1.90 eV to 2.51 eV in three parallel branches. Bandwidth-limited pulse durations between 100 fs and 10 ps are available. The solid-state quantum systems under investigation are mounted in a closed-cycle superconducting magnet cryostat providing temperatures down to 1.6 K and magnetic fields of up to 9 T. The free-standing cryomagnet is coupled to the laser system by means of a high-bandwidth active beam steering unit to eliminate residual low-frequency mechanical vibrations of the pulse tube coolers. High-NA objective lenses inside the sample chamber are employed for focusing femtosecond laser pulses onto the sample and recollection of the transmission signal. The transmitted probe light is dispersed in a grating monochromator equipped with a liquid nitrogen-cooled CCD camera, enabling a frame rate of 559 Hz. In order to eliminate spurious background effects due to low-frequency changes in the thermal equilibrium of the sample, we operate with a lock-in scheme where, instead of the pump amplitude, the pump-probe timing is modulated. This feature is provided without any mechanical action by an electro-optic timing unit inside the femtosecond Er:fiber system. The performance of the instrument is tested with spectrally resolved pump-probe measurements on a single negatively charged CdSe/ZnSe quantum dot under a magnetic field of 9 T. Selective initialization and readout of charge and spin states is carried out via two different femtosecond laser pulses. High-quality results on subpicosecond intraband relaxation dynamics after single-electron excitation motivate a broad variety of future experiments in ultrafast quantum optics and few-fermion quantum dynamics.
Summary in another language
Subject (DDC)
530 Physics
Keywords
Conference
Review
undefined / . - undefined, undefined. - (undefined; undefined)
Cite This
ISO 690TRAUM, Christian, Philipp HENZLER, Stefan LOHNER, H. BECKER, David NABBEN, Pascal GUMBSHEIMER, Christopher HINZ, Jan SCHMIDT, Denis V. SELETSKIY, Alfred LEITENSTORFER, 2019. Multicolor femtosecond pump-probe system with single-electron sensitivity at low temperatures and high magnetic fields. In: Review of scientific instruments. 90(12), 123003. ISSN 0034-6748. eISSN 1089-7623. Available under: doi: 10.1063/1.5126157
BibTex
@article{Traum2019-12-01Multi-48283,
  year={2019},
  doi={10.1063/1.5126157},
  title={Multicolor femtosecond pump-probe system with single-electron sensitivity at low temperatures and high magnetic fields},
  number={12},
  volume={90},
  issn={0034-6748},
  journal={Review of scientific instruments},
  author={Traum, Christian and Henzler, Philipp and Lohner, Stefan and Becker, H. and Nabben, David and Gumbsheimer, Pascal and Hinz, Christopher and Schmidt, Jan and Seletskiy, Denis V. and Leitenstorfer, Alfred},
  note={Article Number: 123003}
}
RDF
<rdf:RDF
    xmlns:dcterms="http://purl.org/dc/terms/"
    xmlns:dc="http://purl.org/dc/elements/1.1/"
    xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
    xmlns:bibo="http://purl.org/ontology/bibo/"
    xmlns:dspace="http://digital-repositories.org/ontologies/dspace/0.1.0#"
    xmlns:foaf="http://xmlns.com/foaf/0.1/"
    xmlns:void="http://rdfs.org/ns/void#"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > 
  <rdf:Description rdf:about="https://kops.uni-konstanz.de/server/rdf/resource/123456789/48283">
    <dc:contributor>Traum, Christian</dc:contributor>
    <dcterms:issued>2019-12-01</dcterms:issued>
    <dc:creator>Hinz, Christopher</dc:creator>
    <dc:creator>Gumbsheimer, Pascal</dc:creator>
    <dc:creator>Schmidt, Jan</dc:creator>
    <dc:creator>Leitenstorfer, Alfred</dc:creator>
    <bibo:uri rdf:resource="https://kops.uni-konstanz.de/handle/123456789/48283"/>
    <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2020-01-20T13:14:24Z</dcterms:available>
    <dcterms:rights rdf:resource="https://rightsstatements.org/page/InC/1.0/"/>
    <dc:contributor>Nabben, David</dc:contributor>
    <dcterms:abstract xml:lang="eng">We present an ultrafast spectroscopy system designed for temporal and spectral resolution of transient transmission changes after excitation of single electrons in solid-state quantum structures. The system is designed for optimum long-term stability, offering the option of hands-off operation over several days. Pump and probe pulses are generated in a versatile Er:fiber laser system where visible photon energies may be tuned independently from 1.90 eV to 2.51 eV in three parallel branches. Bandwidth-limited pulse durations between 100 fs and 10 ps are available. The solid-state quantum systems under investigation are mounted in a closed-cycle superconducting magnet cryostat providing temperatures down to 1.6 K and magnetic fields of up to 9 T. The free-standing cryomagnet is coupled to the laser system by means of a high-bandwidth active beam steering unit to eliminate residual low-frequency mechanical vibrations of the pulse tube coolers. High-NA objective lenses inside the sample chamber are employed for focusing femtosecond laser pulses onto the sample and recollection of the transmission signal. The transmitted probe light is dispersed in a grating monochromator equipped with a liquid nitrogen-cooled CCD camera, enabling a frame rate of 559 Hz. In order to eliminate spurious background effects due to low-frequency changes in the thermal equilibrium of the sample, we operate with a lock-in scheme where, instead of the pump amplitude, the pump-probe timing is modulated. This feature is provided without any mechanical action by an electro-optic timing unit inside the femtosecond Er:fiber system. The performance of the instrument is tested with spectrally resolved pump-probe measurements on a single negatively charged CdSe/ZnSe quantum dot under a magnetic field of 9 T. Selective initialization and readout of charge and spin states is carried out via two different femtosecond laser pulses. High-quality results on subpicosecond intraband relaxation dynamics after single-electron excitation motivate a broad variety of future experiments in ultrafast quantum optics and few-fermion quantum dynamics.</dcterms:abstract>
    <dcterms:title>Multicolor femtosecond pump-probe system with single-electron sensitivity at low temperatures and high magnetic fields</dcterms:title>
    <dc:contributor>Schmidt, Jan</dc:contributor>
    <dc:contributor>Lohner, Stefan</dc:contributor>
    <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/>
    <dcterms:hasPart rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/48283/1/Traum_2-fvc5xkrzg3sf1.pdf"/>
    <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/>
    <foaf:homepage rdf:resource="http://localhost:8080/"/>
    <dc:creator>Nabben, David</dc:creator>
    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2020-01-20T13:14:24Z</dc:date>
    <dc:contributor>Hinz, Christopher</dc:contributor>
    <dc:language>eng</dc:language>
    <dc:contributor>Seletskiy, Denis V.</dc:contributor>
    <dc:contributor>Leitenstorfer, Alfred</dc:contributor>
    <dc:creator>Traum, Christian</dc:creator>
    <dc:creator>Henzler, Philipp</dc:creator>
    <dc:contributor>Becker, H.</dc:contributor>
    <dc:rights>terms-of-use</dc:rights>
    <dc:creator>Becker, H.</dc:creator>
    <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/>
    <dc:creator>Seletskiy, Denis V.</dc:creator>
    <dc:contributor>Gumbsheimer, Pascal</dc:contributor>
    <dspace:hasBitstream rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/48283/1/Traum_2-fvc5xkrzg3sf1.pdf"/>
    <dc:creator>Lohner, Stefan</dc:creator>
    <dc:contributor>Henzler, Philipp</dc:contributor>
  </rdf:Description>
</rdf:RDF>
Internal note
xmlui.Submission.submit.DescribeStep.inputForms.label.kops_note_fromSubmitter
Contact
URL of original publication
Test date of URL
Examination date of dissertation
Method of financing
Comment on publication
Alliance license
Corresponding Authors der Uni Konstanz vorhanden
International Co-Authors
Bibliography of Konstanz
Yes
Refereed
Yes