Effect of laser-radiation polarization on the nonlinear scattering of light in nanodiamond suspensions |
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Authors: | G M Mikheev V V Vanyukov T N Mogileva A P Puzyr’ V S Bondar’ Yu P Svirko |
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Affiliation: | 1. Institute of Mechanics, Ural Branch, Russian Academy of Sciences, Izhevsk, 426067, Russia
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Abstract: | The effect of laser radiation polarization on the nonlinear scattering of light in aqueous suspensions of detonation nanodiamonds (DNDs) in a regime of optical power limiting (OPL) has been studied. It is established that the nonlinear transmission coefficient of DND suspension in the OPL regime in a field of nanosecond laser pulses with a wavelength of 532 nm is independent of the polarization of incident radiation. The nonlinear scattering of light observed at an angle of 90° in the plane perpendicular to the plane of polarization of the incident radiation depends on the polarization angle in accordance with a trigonometric law. It is shown that the ratio of the signals of scattered radiation for the vertical and horizontal polarizations exhibits nonmonotonic dependence on the laser-beam power density. The results are explained by the Rayleigh-Mie scattering and a change in the size of scattering centers as a result of the effect of a laser upon the DND suspension. |
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