Control of condensation and evaporation of electron-hole liquid in diamond by femtosecond laser pulses

被引：8
|
作者：
Kozak, Martin [1 ]
Trojanek, Frantisek [1 ]
Popelar, Tomas [1 ]
Maly, Petr [1 ]
机构：
[1] Charles Univ Prague, Fac Math & Phys, CR-12116 Prague 2, Czech Republic
来源：
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS | 2013年 / 7卷 / 04期
关键词：
diamond; electron-hole liquid; phase transitions; ultrafast control; DROPS;
D O I：
10.1002/pssr.201307030
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We demonstrate the ultrafast control of condensation and evaporation of an electron-hole liquid in diamond prepared by chemical vapor deposition. The electron-hole liquid dynamics was measured using a three-pulse pump and probe experiment. The transient transmission changes in the presence of electron-hole drops were assigned to the increase in the Drude scattering rate in the model of free carrier absorption due to a high carrier density. The fast (similar to 1 ps) liquid evaporation was induced by infrared femtosecond pulses and its dynamics was investigated under different photon energies and fluences. The value of the electron-hole liquid binding energy per electron-hole pair 80 +/- 40 meV determined from the measured transient transmission signal agrees well with previously published values. (C) 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
引用
收藏
页码：278 / 281
页数：4
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