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Transient Reflectivity of Gallium Films Induced by Femtosecond Laser

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dc.contributor.authorGamaly, Eugene G
dc.contributor.authorRode, Andrei V
dc.contributor.authorUteza, O
dc.contributor.authorSamoc, Marek
dc.contributor.authorLuther-Davies, Barry
dc.date.accessioned2015-12-13T23:23:03Z
dc.date.issued2002
dc.date.updated2015-12-12T09:13:52Z
dc.description.abstractThe transient reflectivity of gallium films induced by 150fs laser pulses has been studied by the pump-probe technique at the pump intensities of 109-1012W/cm2. The time-resolved reflectivity rise of the femtosecond probe in the first 1-4ps after the pump pulse excitation depends strongly on the pump pulse intensity. We demonstrate that the transient electron-phonon collision rate extracted from the reflectivity data is a strong function of the temperature, and thus the laser intensity. This collision rate is drastically different from that observed under equilibrium conditions. The scenario for the microscopic kinetics of the phase transition on the femtosecond time scale is discussed, and new experiments for observation of time-resolved optical properties are proposed.
dc.identifier.issn0169-4332
dc.identifier.urihttp://hdl.handle.net/1885/91733
dc.publisherElsevier
dc.sourceApplied Surface Science
dc.subjectKeywords: Gallium; Laser pulses; Light reflection; Optical switches; Phase transitions; Transient reflectivities; Surface properties Femtosecond pump-probe; Gallium films; Transient reflectivity; Ultrafast optical switching
dc.titleTransient Reflectivity of Gallium Films Induced by Femtosecond Laser
dc.typeJournal article
local.bibliographicCitation.lastpage736
local.bibliographicCitation.startpage730
local.contributor.affiliationGamaly, Eugene G, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationRode, Andrei V, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationUteza, O, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationSamoc, Marek, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationLuther-Davies, Barry, College of Physical and Mathematical Sciences, ANU
local.contributor.authoruidGamaly, Eugene G, u4018091
local.contributor.authoruidRode, Andrei V, u8913168
local.contributor.authoruidUteza, O, u4032140
local.contributor.authoruidSamoc, Marek, u9115357
local.contributor.authoruidLuther-Davies, Barry, u7601418
local.description.embargo2037-12-31
local.description.notesImported from ARIES
local.description.refereedYes
local.identifier.absfor020604 - Quantum Optics
local.identifier.ariespublicationMigratedxPub22587
local.identifier.citationvolume197-198
local.identifier.doi10.1016/S0169-4332(02)00401-4
local.identifier.scopusID2-s2.0-17044445537
local.type.statusPublished Version

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