Optoacoustic effects accompanying laser-induced breakdowns on monodispersed solid aerosol particles

Sergei V. Shamanaev

doi:10.1117/12.411947

29 December 2000 Optoacoustic effects accompanying laser-induced breakdowns on monodispersed solid aerosol particles

Sergei V. Shamanaev

Proceedings Volume 4341, Seventh International Symposium on Atmospheric and Ocean Optics; (2000) https://doi.org/10.1117/12.411947
Event: 7th International Symposium on Atmospheric and Ocean Optics, 2000, Tomsk, Russian Federation

Abstract

Generation of acoustic radiation by local plasma formations initiated by solid aerosol particles is one of the nonlinear effects of interaction between high-power laser radiation and atmospheric aerosols. In the present report, time histories of acoustic pulses radiated by discrete plasma formations, initiated under the action of focused laser radiation on a single solid aerosol particle suspended in the laser beam caustic region or on an ensemble of solid monodisperse aerosol particles injected in the laser beam caustic region, are analyzed. The measurements have shown that each local plasma formation radiates a single spherical acoustic pulse, and the total acoustic signal represents a linear superposition of pulses from separate plasma formations. The shape of a single acoustic pulse is satisfactorily approximated by a sinusoid for particles of micron sizes and reproduces a blast N-wave for particles with sizes varying from several tens to several hundreds of micrometers. The average amplitudes and half- periods of acoustic pulses depend linearly on the effective particle diameters with the proportionality coefficients determined by the particle material. The inequality of amplitudes and durations of positive and negative half-periods of acoustic pulses radiated by local plasma formations was also found.

Citation Download Citation

Sergei V. Shamanaev "Optoacoustic effects accompanying laser-induced breakdowns on monodispersed solid aerosol particles", Proc. SPIE 4341, Seventh International Symposium on Atmospheric and Ocean Optics, (29 December 2000); https://doi.org/10.1117/12.411947

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available