УДК: 534.8, 544.032.65

Study of the optoacoustic response to the laser ablation of solids by the radiation of a fiber laser under a thin layer of liquid

Publication in Journal of Optical Technology

For Russian citation (Opticheskii Zhurnal):

Вейко В.П., Самохвалов А.А. Исследование оптоакустического отклика при лазерной абляции твердых тел излучением волоконного лазера под тонким слоем жидкости // Оптический журнал. 2014. Т. 81. № 5. С. 88–92.

Veiko V.P., Samokhvalov A.A. Study of the optoacoustic response to the laser ablation of solids by the radiation of a fiber laser under a thin layer of liquid [in Russian] // Opticheskii Zhurnal. 2014. V. 81. № 5. P. 88–92.

For citation (Journal of Optical Technology):

V. P. Veĭko and A. A. Samokhvalov, "Study of the optoacoustic response to the laser ablation of solids by the radiation of a fiber laser under a thin layer of liquid," Journal of Optical Technology. 81(5), 294-297 (2014). https://doi.org/10.1364/JOT.81.000294

Abstract:

This paper discusses the characteristics of the optoacoustic response to the laser ablation of a steel target under a thin layer of liquid by the radiation of a pulsed fiber laser in the range of power densities 107–2×108 W/cm2. The dependence of the intensity of the principal peak (5.6 kHz) of the Fourier spectrum of the optoacoustic signal on the power density of the laser radiation is determined. It is established that the character of the growth of the acoustic signal amplitude substantially depends on the properties and conditions of the appearance of a near-surface plasma.

Keywords:

laser ablation, optoacoustic response, fiber laser, laser plasma, high-speed video recording

Acknowledgements:

This work was carried out with state financial support of the leading universities of the Russian Federation (Subsidy 074-U01) and a grant of the President of the RF for the support of the leading scientific schools NSh 1364.2014.02.

OCIS codes: 350.3390, 110.5125

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