TIME-RESOLVED CUSPIDAL STRUCTURE IN THE WAVE-FRONT OF SURFACE ACOUSTIC PULSES ON (111)GALLIUM-ARSENIDE

被引：28

作者：

MAZNEV, AA ^{[1
]}

KOLOMENSKII, AA ^{[1
]}

HESS, P ^{[1
]}

机构：

[1] UNIV HEIDELBERG,INST PHYS CHEM,D-69120 HEIDELBERG,GERMANY

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 75卷 / 18期

关键词：

D O I：

10.1103/PhysRevLett.75.3332

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The first experimental observation of the cuspidal structure in the surface acoustic wave (SAW) front propagating from a point source in a crystal is reported. Nanosecond SAW pulses are generated on the (111) surface of GaAs by focused nanosecond laser pulses and detected with a cw probe laser beam. Multiple SAW arrivals are observed in the cuspidal region near the [11(2) over bar] direction. A peak of the SAW amplitude due to ''phonon focusing'' is observed in the cusp direction. The measured SAW wave forms are well described by a model calculating the surface response to a localized pulsed force.

引用

页码：3332 / 3335

页数：4

共 26 条

[1] SURFACE WAVES IN ELASTIC MEDIA WITH CUBIC SYMMETRY
BUCHWALD, VT
DAVIS, A
[J]. QUARTERLY JOURNAL OF MECHANICS AND APPLIED MATHEMATICS, 1963, 16 (03) : 283 - &
[2] RAYLEIGH WAVES IN TRANSVERSELY ISOTROPIC MEDIA
BUCHWALD, VT
[J]. QUARTERLY JOURNAL OF MECHANICS AND APPLIED MATHEMATICS, 1961, 14 (03) : 293 - &
[3] PHONON FOCUSING AT SURFACES
CAMLEY, RE
MARADUDIN, AA
[J]. PHYSICAL REVIEW B, 1983, 27 (04): : 1959 - 1964
[4] PRECISION-MEASUREMENT OF THE SURFACE-ACOUSTIC-WAVE VELOCITY ON SILICON SINGLE-CRYSTALS USING OPTICAL-EXCITATION AND DETECTION
COUFAL, H
MEYER, K
GRYGIER, RK
HESS, P
NEUBRAND, A
[J]. JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 1994, 95 (02) : 1158 - 1160
[5] FARNELL GW, 1970, PHYSICAL ACOUSTICS, V6
[6] HELLWEGE KH, 1966, LANDOLTBORNSTEIN, V2
[7] HELLWEGE KH, 1966, LANDOLTBORNSTEIN, V1
[8] DIRECT DETERMINATION OF GROUP-VELOCITY SURFACES IN A CUSPIDAL REGION IN ZINC
KIM, KY
SACHSE, W
[J]. JOURNAL OF APPLIED PHYSICS, 1994, 75 (03) : 1435 - 1441
[9] PHONON-FOCUSING EFFECT WITH LASER-GENERATED ULTRASONIC SURFACE-WAVES
KOLOMENSKII, AA
MAZNEV, AA
[J]. PHYSICAL REVIEW B, 1993, 48 (19): : 14502 - 14508
[10] KOLOMENSKII AA, 1991, JETP LETT+, V53, P423

← 1 2 3 →