Nonlinear optical properties of semiconducting nanocrystals in fused silica

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dc.contributor.author Dowd, A
dc.contributor.author Samoc, M
dc.contributor.author Luther-Davies, B
dc.contributor.author Elliman, RG
dc.date.accessioned 2012-02-02T04:46:37Z
dc.date.issued 1999
dc.identifier.citation Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, 1999, 148 (1-4), pp. 964 - 968
dc.identifier.issn 0168-583X
dc.identifier.other C1UNSUBMIT en_US
dc.identifier.uri http://hdl.handle.net/10453/14566
dc.description.abstract Degenerate four-wave mixing (DFWM) is used to examine the nonlinear optical response of Ge nanocrystals in a silica matrix. The nanocrystals are formed by implanting 1.0 MeV Ge ions into silica to a dose of 3.0×10 17 Ge cm -2 and annealing at 1100°C. The particle size is well described by a log normal distribution with a mean particle diameter of 3.0 nm and a dimensionless geometric standard deviation of 0.25. The nonlinear optical response, measured at 800 nm with pulse lengths in the range 100-1000 fs, is found to exhibit two patterns of behaviour. For short (180 fs) pulses the DFWM signal is shown to exhibit a third-order dependence on pulse energy (Kerr nonlinearity) and to have a relaxation time of ∼≤ 1 ps, independent of energy. However, for long pulse lengths (600 fs) the signal exhibits a higher order (∼4th order) dependence on pulse energy and has a relaxation time (∼10 ps) which increases with increasing pulse energy. Extreme pulse energies are shown to cause irreversible changes in the sample. © 1999 Elsevier Science B.V. All rights reserved.
dc.language eng
dc.title Nonlinear optical properties of semiconducting nanocrystals in fused silica
dc.type Journal Article
dc.parent Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
dc.journal.volume 1-4
dc.journal.volume 148
dc.journal.number 1-4 en_US
dc.publocation Amsterdam en_US
dc.identifier.startpage 964 en_US
dc.identifier.endpage 968 en_US
dc.cauo.name SCI.Physics and Advanced Materials en_US
dc.conference Verified OK en_US
dc.for 0204 Condensed Matter Physics
dc.for 0205 Optical Physics
dc.personcode 030626
dc.percentage 50 en_US
dc.classification.name Optical Physics en_US
dc.classification.type FOR-08 en_US
dc.edition en_US
dc.custom en_US
dc.date.activity en_US
dc.location.activity ISI:000078575700180 en_US
dc.description.keywords Four-wave mixing
dc.description.keywords Four-wave mixing
dc.description.keywords Ion-implantation
dc.description.keywords Ion-implantation
dc.description.keywords Nanocrystals
dc.description.keywords Nanocrystals
dc.description.keywords Nonlinear optics
dc.description.keywords Nonlinear optics
dc.description.keywords Quantum confinement
dc.description.keywords Quantum confinement
pubs.embargo.period Not known
pubs.organisational-group /University of Technology Sydney
pubs.organisational-group /University of Technology Sydney/Faculty of Science
pubs.organisational-group /University of Technology Sydney/Strength - Materials and Technology for Energy Efficiency
pubs.organisational-group /University of Technology Sydney/Strength - Materials and Technology for Energy Efficiency
utslib.copyright.status Closed Access
utslib.copyright.date 2015-04-15 12:17:09.805752+10
utslib.copyright.date 2015-04-15 12:17:09.805752+10
pubs.consider-herdc false
pubs.consider-herdc false
utslib.collection.history Closed (ID: 3)


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