Year: 2011
Type: article
Abstract: Recent times have seen a surge of research activity on systems combining fluid mechanics and electromagnetic fields. In radiation optics, whenever information about the distribution of pressure in a dielectric fluid is required, the contribution from electrostriction becomes important. In the present paper, we calculate how the local pressure varies with position and time when a laser beam is imposed in a uniform fluid. A Gaussian intensity profile of arbitrary time dependence is assumed for the beam, and general results are derived in this case. For demonstration, we analyze two different cases: first, that the beam is imposed suddenly (mathematically in the form of a step function) and second, that the beam is switched on in a soft way. In both cases, simple analytical expressions for the pressure distribution are found.
Source: Physics of Fluids
DOI: 10.1063/1.3638130
Authors: Simen Å. Ellingsen, Iver Brevik
Institution: Norwegian University of Science and Technology
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2054820593