Coherent acoustic phonons in PbTe quantum dots

被引：48

作者：

Thoen, ER ^{[1
]}

Steinmeyer, G

Langlois, P

Ippen, EP

Tudury, GE

Cruz, CHB

Barbosa, LC

Cesar, CL

机构：

[1] MIT, Dept Elect Engn & Comp Sci, Elect Res Lab, Cambridge, MA 02139 USA

[2] MIT, Dept Phys, Cambridge, MA 02139 USA

[3] Univ Estadual Campinas, Inst Fis, BR-13083970 Campinas, SP, Brazil

来源：

APPLIED PHYSICS LETTERS | 1998年 / 73卷 / 15期

关键词：

D O I：

10.1063/1.122406

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Femtosecond pump-probe studies at 1.5 mu m of PbTe quantum dots in a glass matrix have revealed oscillations due to a spheroidal acoustic mode. The wavelength dependence of the observed frequencies indicates size selectivity. The frequency and damping of the mode as a function of wavelength agree with the predictions of an acoustic continuum model that suggests that the dominant damping mechanism is radiative loss from the dots to the surrounding glass. (C) 1998 American Institute of Physics. [S0003-6951(98)03241-0].

引用

页码：2149 / 2151

页数：3

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