УДК: 533.9.082.5

Nanostructuring of the surface of silicate glass by femtosecond laser pulses in the UV range

Ionin, A.A., Kudryashov, S.I., Seleznev, L.V., Sinitsyn, D.V., Apostolova, Ts.

Publication in Journal of Optical Technology

For Russian citation (Opticheskii Zhurnal):

Ионин А.А., Кудряшов С.И., Селезнев Л.В., Синицын Д.В., Апостолова Ц. Наноструктурирование поверхности силикатного стекла фемтосекундными лазерными импульсами ультрафиолетового диапазона // Оптический журнал. 2014. Т. 81. № 5. С. 43–54.

Ionin A.A., Kudryashov S.I., Seleznev L.V., Sinitsyn D.V., Apostolova Ts. Nanostructuring of the surface of silicate glass by femtosecond laser pulses in the UV range [in Russian] // Opticheskii Zhurnal. 2014. V. 81. № 5. P. 43–54.

For citation (Journal of Optical Technology):

A. A. Ionin, S. I. Kudryashov, L. V. Seleznev, D. V. Sinitsyn, and T. Apostolova, "Nanostructuring of the surface of silicate glass by femtosecond laser pulses in the UV range," Journal of Optical Technology. 81(5), 262-269 (2014). https://doi.org/10.1364/JOT.81.000262

Abstract:

The electron dynamics and surface ablation of silicate glass excited by single UV femtosecond pulses have been studied by photoluminescence and contact ultrasound diagnostics. At low energy densities of the laser radiation, the photoluminescence signal reveals the linear character of the photogeneration of the electron–hole plasma, accompanied by its radiative recombination, carrier autolocalization, and point-defect generation. At high energy densities, rapid Auger recombination of the dense electron–hole plasma saturates the luminescence output, allowing only ultrasound diagnostics of the photoexcitation and subsequent thermal processes, including spallation and fragmentation ablation. The results of the experimental studies of the electron dynamics are confirmed by the results of its numerical modelling in terms of the quantum kinetic model, based on a solution of the Boltzmann equation. Surface nanolattices are generated on the surface of the glass in the multipulse laser-excitation regime.

Keywords:

UV femtosecond laser pulses, silicate glass, electron dynamics, ablation and surface nanostructuring

Acknowledgements:

The authors are grateful for support to the Russian Foundation for Basic Research (Project No. 13-02-00971) and also to the Presidium of the Russian Academy of Sciences (Program Nos. 13 and 24).

OCIS codes: 320.7130

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