Numerical investigation of the effect of the temporal pulse shape on modification of fused silica by femtosecond pulses

Alexandr V. Dostovalov, A.A. Wolf, Sergei A. Babin, Mykhaylo V. Dubov, Vladimir K. Mezentsev

Research output: Contribution to journalArticle

Abstract

We report the results of numerical studies of the impact of asymmetric femtosecond pulses focused in the bulk of the material on the femtosecond modification of fused silica. It is shown that such pulses lead to localisation of absorption in the process of femtosecond modification and to a decrease in the threshold energy of modification. It is found that the optimal asymmetry parameters for reaching the maximum plasma density in the focusing region depend on the pulse energy: at an initial energy of about 100 nJ, it is preferable to use pulses with positive TOD; however, when the energy is increased, it is preferable to use pulses with negative TOD. This is explained by differences in the dynamics of the processes of absorption of energy of a pulse propagating in the material.
Original languageEnglish
Pages (from-to)799-804
Number of pages6
JournalQuantum Electronics
Volume42
Issue number9
DOIs
Publication statusPublished - 2012

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Fused silica
Ultrashort pulses
Laser pulses
silicon dioxide
Plasma density
Energy absorption
pulses
energy
plasma density
asymmetry
thresholds

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Dostovalov, Alexandr V. ; Wolf, A.A. ; Babin, Sergei A. ; Dubov, Mykhaylo V. ; Mezentsev, Vladimir K. / Numerical investigation of the effect of the temporal pulse shape on modification of fused silica by femtosecond pulses. In: Quantum Electronics. 2012 ; Vol. 42, No. 9. pp. 799-804.
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Numerical investigation of the effect of the temporal pulse shape on modification of fused silica by femtosecond pulses. / Dostovalov, Alexandr V.; Wolf, A.A.; Babin, Sergei A.; Dubov, Mykhaylo V.; Mezentsev, Vladimir K.

In: Quantum Electronics, Vol. 42, No. 9, 2012, p. 799-804.

Research output: Contribution to journalArticle

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