KOPS - The Institutional Repository of the University of Konstanz

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

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

Cite This

Files in this item

Files Size Format View

There are no files associated with this item.

TRAUM, Christian, Philipp HENZLER, Stefan LOHNER, H. BECKER, David NABBEN, Pascal GUMBSHEIMER, Christopher HINZ, Jan Frederik LIPPMANN, 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

@article{Traum2019-12-01Multi-48283, title={Multicolor femtosecond pump-probe system with single-electron sensitivity at low temperatures and high magnetic fields}, year={2019}, doi={10.1063/1.5126157}, 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 Lippmann, Jan Frederik and Seletskiy, Denis V. and Leitenstorfer, Alfred}, note={Article Number: 123003} }

<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/rdf/resource/123456789/48283"> <dc:creator>Henzler, Philipp</dc:creator> <dc:creator>Lippmann, Jan Frederik</dc:creator> <dc:contributor>Gumbsheimer, Pascal</dc:contributor> <dc:contributor>Henzler, Philipp</dc:contributor> <dc:creator>Leitenstorfer, Alfred</dc:creator> <dcterms:title>Multicolor femtosecond pump-probe system with single-electron sensitivity at low temperatures and high magnetic fields</dcterms:title> <dc:contributor>Lohner, Stefan</dc:contributor> <dc:contributor>Seletskiy, Denis V.</dc:contributor> <dc:creator>Lohner, Stefan</dc:creator> <dc:contributor>Hinz, Christopher</dc:contributor> <dc:contributor>Becker, H.</dc:contributor> <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/> <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/rdf/resource/123456789/41"/> <dcterms:issued>2019-12-01</dcterms:issued> <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/rdf/resource/123456789/41"/> <dc:creator>Traum, Christian</dc:creator> <dc:contributor>Nabben, David</dc:contributor> <dc:contributor>Leitenstorfer, Alfred</dc:contributor> <foaf:homepage rdf:resource="http://localhost:8080/jspui"/> <dc:creator>Becker, H.</dc:creator> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2020-01-20T13:14:24Z</dc:date> <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2020-01-20T13:14:24Z</dcterms:available> <dc:creator>Hinz, Christopher</dc:creator> <dc:language>eng</dc:language> <dc:creator>Nabben, David</dc:creator> <bibo:uri rdf:resource="https://kops.uni-konstanz.de/handle/123456789/48283"/> <dc:creator>Gumbsheimer, Pascal</dc:creator> <dc:creator>Seletskiy, Denis V.</dc:creator> <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> <dc:contributor>Lippmann, Jan Frederik</dc:contributor> <dc:contributor>Traum, Christian</dc:contributor> </rdf:Description> </rdf:RDF>

This item appears in the following Collection(s)

Search KOPS


Browse

My Account