Nonlinear effects in optical pumping of a cold and slow atomic beam

Handle URI:
http://hdl.handle.net/10754/579845
Title:
Nonlinear effects in optical pumping of a cold and slow atomic beam
Authors:
Porfido, N.; Bezuglov, N. N.; Bruvelis, M.; Shayeganrad, G.; Birindelli, S.; Tantussi, F.; Guerri, I.; Viteau, M.; Fioretti, A.; Ciampini, D.; Allegrini, M.; Comparat, D.; Arimondo, E.; Ekers, Aigars ( 0000-0001-9141-7597 ) ; Fuso, F.
Abstract:
By photoionizing hyperfine (HF) levels of the Cs state 62P3/2 in a slow and cold atom beam, we find how their population depends on the excitation laser power. The long time (around 180μs) spent by the slow atoms inside the resonant laser beam is large enough to enable exploration of a unique atom-light interaction regime heavily affected by time-dependent optical pumping. We demonstrate that, under such conditions, the onset of nonlinear effects in the population dynamics and optical pumping occurs at excitation laser intensities much smaller than the conventional respective saturation values. The evolution of population within the HF structure is calculated by numerical integration of the multilevel optical Bloch equations. The agreement between numerical results and experiment outcomes is excellent. All main features in the experimental findings are explained by the occurrence of “dark” and “bright” resonances leading to power-dependent branching coefficients.
KAUST Department:
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Citation:
Nonlinear effects in optical pumping of a cold and slow atomic beam 2015, 92 (4) Physical Review A
Publisher:
American Physical Society (APS)
Journal:
Physical Review A
Issue Date:
12-Oct-2015
DOI:
10.1103/PhysRevA.92.043408
Type:
Article
ISSN:
1050-2947; 1094-1622
Additional Links:
http://link.aps.org/doi/10.1103/PhysRevA.92.043408
Appears in Collections:
Articles; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorPorfido, N.en
dc.contributor.authorBezuglov, N. N.en
dc.contributor.authorBruvelis, M.en
dc.contributor.authorShayeganrad, G.en
dc.contributor.authorBirindelli, S.en
dc.contributor.authorTantussi, F.en
dc.contributor.authorGuerri, I.en
dc.contributor.authorViteau, M.en
dc.contributor.authorFioretti, A.en
dc.contributor.authorCiampini, D.en
dc.contributor.authorAllegrini, M.en
dc.contributor.authorComparat, D.en
dc.contributor.authorArimondo, E.en
dc.contributor.authorEkers, Aigarsen
dc.contributor.authorFuso, F.en
dc.date.accessioned2015-10-18T14:43:54Zen
dc.date.available2015-10-18T14:43:54Zen
dc.date.issued2015-10-12en
dc.identifier.citationNonlinear effects in optical pumping of a cold and slow atomic beam 2015, 92 (4) Physical Review Aen
dc.identifier.issn1050-2947en
dc.identifier.issn1094-1622en
dc.identifier.doi10.1103/PhysRevA.92.043408en
dc.identifier.urihttp://hdl.handle.net/10754/579845en
dc.description.abstractBy photoionizing hyperfine (HF) levels of the Cs state 62P3/2 in a slow and cold atom beam, we find how their population depends on the excitation laser power. The long time (around 180μs) spent by the slow atoms inside the resonant laser beam is large enough to enable exploration of a unique atom-light interaction regime heavily affected by time-dependent optical pumping. We demonstrate that, under such conditions, the onset of nonlinear effects in the population dynamics and optical pumping occurs at excitation laser intensities much smaller than the conventional respective saturation values. The evolution of population within the HF structure is calculated by numerical integration of the multilevel optical Bloch equations. The agreement between numerical results and experiment outcomes is excellent. All main features in the experimental findings are explained by the occurrence of “dark” and “bright” resonances leading to power-dependent branching coefficients.en
dc.language.isoenen
dc.publisherAmerican Physical Society (APS)en
dc.relation.urlhttp://link.aps.org/doi/10.1103/PhysRevA.92.043408en
dc.rightsArchived with thanks to Physical Review Aen
dc.titleNonlinear effects in optical pumping of a cold and slow atomic beamen
dc.typeArticleen
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Divisionen
dc.identifier.journalPhysical Review Aen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionDipartimento di Fisica Enrico Fermi, Università di Pisa, 56127 Pisa, Italyen
dc.contributor.institutionFaculty of Physics, St. Petersburg State University, 198904 St. Petersburg, Russiaen
dc.contributor.institutionDepartment of Physics, University ITMO, 197101 St. Petersburg, Russiaen
dc.contributor.institutionInstitute of Atomic Physics and Spectroscopy, University of Latvia, LV-1586 Riga, Latviaen
dc.contributor.institutionOrsay Physics, TESCAN Orsay, 13710 Fuveau, Franceen
dc.contributor.institutionIstituto Nazionale di Ottica, INO-CNR, 56124 Pisa, Italyen
dc.contributor.institutionConsorzio Nazionale Interuniversitario per le Scienze Fisiche della Materia, CNISM, Sezione di Pisa, 56127 Pisa, Italyen
dc.contributor.institutionLaboratoire Aimé Cotton, CNRS, Université Paris-Sud, ENS Cachan, 91405 Orsay, Franceen
dc.contributor.institutionASML, 5504 DR Veldhoven, Netherlandsen
dc.contributor.institutionFakultät Physik, Zentrum für Synchrotronstrahlung, Technische Universität Dortmund, 44227 Dortmund, Germanyen
dc.contributor.institutionDepartment of Applied Physics, Technische Universiteit Eindhoven, 5612 AJ Eindhoven, Netherlandsen
dc.contributor.institutionIstituto Italiano di Tecnologia, 16136 Genova, Italyen
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
kaust.authorEkers, Aigarsen
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