M S Sodha
Articles written in Pramana – Journal of Physics
Volume 41 Issue 1 July 1993 pp 1-7
Underwater optical generation of sound: Oblique incidence
M S Sodha V Rai M P Verma S Konar K P Maheshwari
This paper addresses itself to the problem of thermoacoustic generation by an obliquely incident laser beam in a body of water. Far-field directivity pattern of thermoacoustic source (TS) has been studied analytically and numerically. Our study suggests the possibility of getting highly directional sound beams in a simple configuration.
Volume 42 Issue 2 February 1994 pp 141-148
Generation of ultrasonic waves in water by an elliptical Gaussian laser beam
M S Sodha S Konar M P Verma V Rai
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.
Volume 96, 2022
All articles
Continuous Article Publishing mode
Click here for Editorial Note on CAP Mode
© 2021-2022 Indian Academy of Sciences, Bengaluru.