COHERENT PHONON DETECTION FROM ULTRAFAST SURFACE VIBRATIONS

被引：174

作者：

WRIGHT, OB

KAWASHIMA, K

机构：

[1] Electronics Research Laboratories, Nippon Steel Corporation, Sagamihara, Kanagawa 229

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 69卷 / 11期

关键词：

D O I：

10.1103/PhysRevLett.69.1668

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using an optical technique, ultrafast vibrations of the surface of thin opaque films in the 0.1-THz range have been directly observed in the time domain. We propose a new type of phonon detection by monitoring the surface velocity, and demonstrate an exceptional sensitivity to atomic-scale inhomogeneities by observing an anomalous reflection from a buried film of monolayer order in thickness.

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页码：1668 / 1671

页数：4

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