About: Dynamics of electron-hole liquid condensation in CVD diamond studied by femtosecond pump and probe spectroscopy

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About: Dynamics of electron-hole liquid condensation in CVD diamond studied by femtosecond pump and probe spectroscopy Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://dx.doi.org/10.1016/j.diamond.2013.01.008
Description	We report on the femtosecond pump and probe study of the condensation dynamics of electron-hole liquid in CVD IIa type diamond. The parameters of electron-hole liquid created after carrier excitation by one- and two-photon absorption were determined on the basis of die analysis of spectral shape of time-integrated photoluminescence. The dynamics of condensation of carriers into electron-hole liquid was probed by measuring the time evolution of changes in infrared light absorption. These changes were interpreted in terms of the density dependent carrier scattering time according to the Drude model of free-carrier absorption. Measured condensation times range from 50 to 500 ps depending on the initial carrier density (3 x 10(16) cm(-3)-5 x 10(18) cm(-3)) and the sample temperature (13-130 K). The measured dynamics was reproduced very well by a rate equation model of electron-hole droplet formation for low photoexcited carrier densities. A similar to 10 ps delay in initial stage of condensation observed for high carier densities was interpreted in terms of density dependent carrier cooling rate. We report on the femtosecond pump and probe study of the condensation dynamics of electron-hole liquid in CVD IIa type diamond. The parameters of electron-hole liquid created after carrier excitation by one- and two-photon absorption were determined on the basis of die analysis of spectral shape of time-integrated photoluminescence. The dynamics of condensation of carriers into electron-hole liquid was probed by measuring the time evolution of changes in infrared light absorption. These changes were interpreted in terms of the density dependent carrier scattering time according to the Drude model of free-carrier absorption. Measured condensation times range from 50 to 500 ps depending on the initial carrier density (3 x 10(16) cm(-3)-5 x 10(18) cm(-3)) and the sample temperature (13-130 K). The measured dynamics was reproduced very well by a rate equation model of electron-hole droplet formation for low photoexcited carrier densities. A similar to 10 ps delay in initial stage of condensation observed for high carier densities was interpreted in terms of density dependent carrier cooling rate. (en)
Title	Dynamics of electron-hole liquid condensation in CVD diamond studied by femtosecond pump and probe spectroscopy Dynamics of electron-hole liquid condensation in CVD diamond studied by femtosecond pump and probe spectroscopy (en)
skos:prefLabel	Dynamics of electron-hole liquid condensation in CVD diamond studied by femtosecond pump and probe spectroscopy Dynamics of electron-hole liquid condensation in CVD diamond studied by femtosecond pump and probe spectroscopy (en)
skos:notation	RIV/00216208:11320/13:10173366!RIV14-GA0-11320___
http://linked.open...avai/riv/aktivita	P S
http://linked.open...avai/riv/aktivity	P(GD202/09/H041), S
http://linked.open...iv/cisloPeriodika	January 2013
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Popelář, Tomáš Kozák, Martin Malý, Petr Trojánek, František
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Karlova v Praze / Matematicko-fyzikální fakulta
http://linked.open...dnocenehoVysledku	70960
http://linked.open...ai/riv/idVysledku	RIV/00216208:11320/13:10173366
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Phase transition; Optical high excitation of diamond; Pump and probe spectroscopy; Electron-hole liquid (en)
http://linked.open.../riv/klicoveSlovo	Phase transition Electron-hole liquid Optical high excitation of diamond Pump and probe spectroscopy
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[8C68ADBEFB79]
http://linked.open...i/riv/nazevZdroje	Diamond and Related Materials
http://linked.open...in/vavai/riv/obor	BH
http://linked.open...ichTvurcuVysledku	4 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...vavai/riv/projekt	Physics of nanostructures
http://linked.open...UplatneniVysledku	2013
http://linked.open...v/svazekPeriodika	34
http://linked.open...iv/tvurceVysledku	Malý, Petr Kozák, Martin Trojánek, František Popelář, Tomáš
http://linked.open...ain/vavai/riv/wos	000317795400003
issn	0925-9635
number of pages	6 (xsd:int)
http://bibframe.org/vocab/doi	10.1016/j.diamond.2013.01.008
http://localhost/t...ganizacniJednotka	11320

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