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Article information
2017 , Volume 22, ¹ 6, p.48-56
Zhukov V.P., Bulgakova N.M., Fedoruk M.P.
Modelling of impact of a sequence of laser pulses with different wavelengths on glass
The following scheme of materials fabrication by a sequence of two laser pulses with different wavelength is investigated by numerical modelling. At first, the glass is irradiated by a shortwave pulse, which produces seed electrons in the conductive zone of a small size (in order to several cubic wavelengths) volume due to photoionization. The long wavelength second pulse provides the further increase of conductive electrons density due to impact ionization and high absorption of radiative energy. The absorbed energy is so large, so it provides the modification of material. Thereby the material modification is created in a small volume of space, which is determined by the smallest wavelength. The energies of both pulses could be well below the energy required for the modification by single pulse. The modelling was done in the frame of nonlinear Maxwell equations supplemented by hydrodynamic type equations for the plasma of conductive zone electrons. The features of used finite-difference scheme are also discussed.
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Keywords: femtosecond laser pulses, dichromatic laser pulse, nonlinear Maxwells equations
Author(s):
Zhukov Vladimir Petrovich
Dr.
Position: Senior Research Scientist
Office: Federal Research Center for Information and Computational Technologies
Address: 630090, Russia, Novosibirsk, Ac. Lavrentiev ave., 6
Phone Office: (383) 330 97 72
E-mail: zuk@ict.nsc.ru
Bulgakova Nadezhda Mikhailovna
Dr. , Senior Scientist
Position: General Scientist
Office: Kutateladze Institute of Thermophysics Siberian Branch of the RAS
Address: 630090, Russia, Novosibirsk, 1, Ac. Lavrentieva ave
Phone Office: (383) 330-70-50
E-mail: nbul@itp.nsc.ru
Fedoruk Mikhail Petrovich
Dr. , Academician RAS, Professor
Position: Chancellor
Office: Novosibirsk State University, Federal Research Center for Information and Computational Technologies
Address: 630090, Russia, Novosibirsk, str. Pirogova, 2
Phone Office: (3832) 349105
E-mail: mife@net.ict.nsc.ru
SPIN-code: 4929-8753 References:
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Bibliography link:
Zhukov V.P., Bulgakova N.M., Fedoruk M.P. Modelling of impact of a sequence of laser pulses with different wavelengths on glass // Computational technologies. 2017. V. 22. ¹ 6. P. 48-56
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