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Self-limited underdense microplasmas in bulk silicon induced by ultrashort laser pulses

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dc.contributor.authorMouskeftaras, Alexandros
dc.contributor.authorRode, Andrei V.
dc.contributor.authorClady, Raphaël
dc.contributor.authorSentis, Marc
dc.contributor.authorUtéza, Olivier
dc.contributor.authorGrojo, David
dc.date.accessioned2015-04-09T06:26:39Z
dc.date.available2015-04-09T06:26:39Z
dc.date.issued2014-11-10
dc.date.updated2015-12-10T09:52:48Z
dc.description.abstractTwo-photon ionization by focused femtosecond laser pulses initiates the development of micrometer-scale plasmas in the bulk of silicon. Using pump-and-probe transmission microscopy with infrared light, we investigate the space-time characteristics of these plasmas for laser intensities up to 10¹²W/cm². The measurements reveal a self-limitation of the excitation at a maximum free-carrier density of ffi1019 cm3, which is more than one order of magnitude below the threshold for permanent modification. The plasmas remain unchanged in the 100 ps timescale revealing slow carrier kinetics. The results underline the limits in local control of silicon dielectric permittivity, which are inherent to the use of single near-infrared ultrashort Gaussian pulses.
dc.description.sponsorshipThis research has received financial support from the French National Research Agency (ANR 2010-JCJC-913- 01), the French Carnot Star Institute (Via-LASER), and the CNRS PICS Program No. 45052. A.R. is grateful for partial support by the Australian Research Council’s (Discovery Project DP 120102980) and by the Air Force Office of Scientific Research (USA, Grant No. FA 9550-12-1-0482).en_AU
dc.format5 pages
dc.identifier.issn0003-6951en_AU
dc.identifier.urihttp://hdl.handle.net/1885/13207
dc.publisherAmerican Institute of Physics
dc.relationhttp://purl.org/au-research/grants/arc/DP120102980
dc.rightshttp://www.sherpa.ac.uk/romeo/issn/0003-6951/..."Publishers version/PDF may be used on author's personal website or institutional website" from SHERPA/RoMEO site (as at 09/04/15)
dc.sourceApplied Physics Letters
dc.titleSelf-limited underdense microplasmas in bulk silicon induced by ultrashort laser pulses
dc.typeJournal article
dcterms.dateAccepted2014-10-31
local.bibliographicCitation.issue19en_AU
local.bibliographicCitation.lastpage4
local.bibliographicCitation.startpage191103en_AU
local.contributor.affiliationRode, R. V., Laser Physics Centre, Research School of Physics and Engineering, The Australian National Universityen_AU
local.contributor.authoruidu8913168en_AU
local.identifier.absfor020500 - OPTICAL PHYSICS
local.identifier.absseo970102 - Expanding Knowledge in the Physical Sciences
local.identifier.ariespublicationa383154xPUB1044
local.identifier.citationvolume105en_AU
local.identifier.doi10.1063/1.4901528en_AU
local.identifier.scopusID2-s2.0-84922458218
local.identifier.thomsonID000345216100003
local.type.statusPublished Versionen_AU

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