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Poster

On the problem of the initial conditions for tightly-focused ultrashort laser pulses in the modeling of laser beam propagation in transparent solids

Wednesday (24.06.2020)
13:22 - 13:25 Room 1
Part of:
Line-Up:
- Poster Periodic microstructuring of metal moulds using direct laser interference patterning for nanoimprint replication 1 Dr. Marcos Soldera
- Poster Comparison of structural colors achieved by laser induced periodic surface structures and direct laser interference patterning 1 Dr. Marcos Soldera
- Poster *student* Wetting properties of the aluminium surface structures fabricated using Direct Laser Interference Patterning with picosecond and femtosecond pulses 1 Dipl.-Ing. Stephan Milles
- Poster The numerical realization of a model of interaction of ultrashort laser pulses with solid 1 Prof. Vladimir Zhukov
- Poster On the problem of the initial conditions for tightly-focused ultrashort laser pulses in the modeling of laser beam propagation in transparent solids 1 Prof. Vladimir Zhukov
- Poster Innovative polymer coating systems – applied by laser sintering technique 1 Dr. Anna Buling
- Poster Tangential laser turning of fused silica usin ultra-short laser pulses 1 Julian Zettl
- Poster Process optimization of Direct Laser Interference Patterning 1 Dr. Bogdan Voisiat
- Poster Dynamic aberration correction via spatial light modulator (SLM) for femtosecond direct laser writing 1 Gabrielius Kontenis
- Poster Modification of metal nanoparticles via femtosecond laser pulses and their application for SERS 1 Dr. Asta Tamuleviciene
- Poster Ultraviolet and Infrared Femtosecond Laser Irradiation of Thermoplastics PET and PA66 1 Dr. Xxx Sedao
- Poster High pulse energy femtosecond laser machining station for the interference and parallel processing 1 Dr. Simonas Indrisiunas
- Poster Laser material processing with a multi-beam setup based on Excited State Absorption 1 Sebastian Engel
- Poster GO-neutral red nanocomposite reduction by pulsed laser irradiation 1 Dr. Romualdas Trusovas
- Poster *student* Numerical simulation of energy relaxation in Mo thin films exposed to femtosecond laser pulse 1 Kryštof Hlinomaz
- Poster Modification of medical-grade poly(L-lactide) using femtosecond laser filamentation 1 Dr. Bogusz Stepak
Session Chair


Session PS: Poster Session 02
Belongs to:
Topic PS: Poster Session


Sophisticated numerical modeling of interaction of ultrashort laser pulses with the bulk of transparent dielectrics offers a great potential for the fundamental understanding the laser-induced processes and optimizing the irradiation regimes for specific applications. However, in the case of tightly-focused beams, mathematical modeling faces the problem of setting up the correct initial conditions for the laser field. In the presented work, we investigate the “parabolic mirror” initial condition. For these aims, the technique of the Stratton-Chu integral is applied. It is shown that, for obtaining the physically meaningful solutions, it is necessary to calculate temporal evolution of the beam in a special way. To do this, the generalization of the Stratton-Chu integral for the time dependence of the propagating laser pulse has been proposed. A numerical code has been developed, which enables efficient calculations of the generalized Stratton-Chu integral.

Speaker:
Prof. Vladimir Zhukov
Czech Academy of Sciences
Additional Authors:
  • Prof. Nadezhda Bulgakova
    HiLASE Centre, Institute of Physics of the Czech Academy of Sciences

Dateien

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