Transient Dielectric Function of Fs-Laser Excited Bismuth

被引：0
|
作者：
Rode, Andrei V. [1 ]
Boschetto, Davide [2 ]
Garl, Thomas [2 ]
Rousse, Antoine [2 ]
机构：
[1] Australian Natl Univ, Laser Phys Ctr, Canberra, ACT 0200, Australia
[2] Ecole Polytech, ENSTA, Lab Optique Appl, Chemin huniere, Palaiseau, France
来源：
ULTRAFAST PHENOMENA XVI | 2009年 / 92卷
关键词：
D O I：
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中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We present time-resolved dual-angle single-wavelength pump-probe study of the reflectivity of femtosecond laser excited bismuth crystal. The recovered real and imaginary parts of the dielectric function show complex a transition to a new quasi-stable excited state at about 20 ps. This state lasts for about 4 ns after the excitation and is not an intermediate state between the solid and the liquid phase. The results suggest that the photo-excited state does not correspond to neither a warm nor a liquid phase, and open general questions on photo-excited phase transition.
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页码：217 / +
页数：2
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