Transient strain driven by a dense electron-hole plasma

被引：37

作者：

DeCamp, MF ^{[1
]}

Reis, DA

Cavalieri, A

Bucksbaum, PH

Clarke, R

Merlin, R

Dufresne, EM

Arms, DA

Lindenberg, AM

MacPhee, AG

Chang, Z

Lings, B

Wark, JS

Fahy, S

机构：

[1] Univ Michigan, FOCUS Ctr, Ann Arbor, MI 48109 USA

[2] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA

[3] Univ Calif Berkeley, Dept Phys, Berkeley, CA USA

[4] Kansas State Univ, Dept Phys, Manhattan, KS 66506 USA

[5] Univ Oxford, Dept Phys, Clarendon Lab, Oxford OX1 3PU, England

[6] Univ Coll, Dept Phys, Cork, Ireland

[7] Univ Coll, NMRC, Cork, Ireland

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 91卷 / 16期

关键词：

D O I：

10.1103/PhysRevLett.91.165502

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We measure transient strain in ultrafast laser-excited Ge by time-resolved x-ray anomalous transmission. The development of the coherent strain pulse is dominated by rapid ambipolar diffusion. This pulse extends considerably longer than the laser penetration depth because the plasma initially propagates faster than the acoustic modes. X-ray diffraction simulations are in agreement with the observed dynamics.

引用

收藏

页码：165502 / 165502

页数：4

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