GENERATION OF ULTRASONIC-WAVES IN WATER BY AN ELLIPTIC GAUSSIAN LASER-BEAM

被引：1
|
作者：
SODHA, MS
KONAR, S
VERMA, MP
RAI, V
机构：
[1] DEVI AHILYA VISHWAVIDYALAYA,SCH PHYS,INDORE 452001,INDIA
[2] UNIV LUCKNOW,LUCKNOW 226007,UTTAR PRADESH,INDIA
来源：
PRAMANA-JOURNAL OF PHYSICS | 1994年 / 42卷 / 02期
关键词：
THERMAL GENERATION OF SOUND; THERMOACOUSTIC SOURCE; FAR-FIELD DIRECTIVITY PATTERN; DIRECTIONAL ACOUSTIC SOURCES;
D O I：
10.1007/BF02847509
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The paper presents an analysis of ultrasonic wave generation in water by intensity modulated elliptical Gaussian laser beams. It is found that generated acoustic radiation is highly directional both in polar and azimuthal directions. An increase in the assymmetry of the transverse intensity distribution from the Gaussian dependence enhances the source directivity considerably. An obvious conclusion is that elliptical Gaussian beams are better choice in applications where it is desired to communicate in an approximately prescribed small solid angle.
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页码：141 / 148
页数：8
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