Femtosecond polarization relaxation in CdSe nanocrystals

被引：0
|
作者：
Tortschanoff, A. [1 ]
Al Salman, A. [1 ]
Tonti, D. [1 ]
Mohamed, M. B. [1 ]
van der Zwan, G. [2 ]
van Mourlk, F. [1 ]
Chergui, M. [1 ]
机构：
[1] Ecole Polytech Fed Lausanne, ISIC, Lab Spect Ultarapide, CH-1015 Lausanne, Switzerland
[2] Vrije Univ Amsterdam, Fac Sci, Analyt Chem & Appl Spectroscopy, NL-1081 HV Amsterdam, Netherlands
来源：
PHYSICS OF SEMICONDUCTORS, PTS A AND B | 2007年 / 893卷
关键词：
CdSe nanodots; anisotropy; ultrafast spectroscopy; exciton fine structure;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We present ultrafast pump-probe studies on chemically prepared CdSe nanocrystals. Upon pulsed optical excitation we find pronounced oscillations, indicating strong coupling to a LO phonon mode. From the polarization dependence of the signal additional information about the very first coherent events of exciton dynamics is obtained. The observed anisotropy behaviour suggests strongly driven dynamics and rapid coherent motion.
引用
收藏
页码：971 / +
页数：2
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