Transient grating measurements of picosecond acoustic pulses in metal films

被引：51

作者：

Crimmins, TF ^{[1
]}

Maznev, AA ^{[1
]}

Nelson, KA ^{[1
]}

机构：

[1] MIT, Dept Chem, Cambridge, MA 02139 USA

来源：

APPLIED PHYSICS LETTERS | 1999年 / 74卷 / 09期

关键词：

D O I：

10.1063/1.123545

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A transient grating technique is used to detect picosecond acoustic pulses in supported metal films. Crossed femtosecond laser pulses generate acoustic responses with longitudinal components propagating normal to the film plane and surface acoustic wave components propagating in the film plane. Surface "ripple'' associated with both components is detected through the diffraction of a probe beam. The measurements yield enhanced information content for characterization of film thickness and mechanical properties. (C) 1999 American Institute of Physics. [S0003-6951(99)01208-5].

引用

页码：1344 / 1346

页数：3

共 15 条

[1]

Auld B.A., 1973, ACOUSTIC FIELDS WAVE

[2] REAL-TIME OPTICAL CHARACTERIZATION OF SURFACE ACOUSTIC MODES OF POLYIMIDE THIN-FILM COATINGS [J].