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From localized laser energy absorption to absorption delocalization at volumetric glass modification with Gaussian and doughnut-shaped pulses
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SYSNO ASEP 0574315 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title From localized laser energy absorption to absorption delocalization at volumetric glass modification with Gaussian and doughnut-shaped pulses Author(s) Zukerstein, Martin (FZU-D) ORCID
Zhukov, Vladimir (FZU-D) ORCID
Meshcheryakov, Y.P. (RU)
Bulgakova, Nadezhda M. (FZU-D) ORCIDNumber of authors 4 Article number 882 Source Title Photonics. - : MDPI
Roč. 10, č. 8 (2023)Number of pages 13 s. Language eng - English Country CH - Switzerland Keywords volumetric modification ; femtosecond laser pulses ; laser processing ; fused silica ; Maxwell’s equations ; thermoelastoplastic modeling Subject RIV BH - Optics, Masers, Lasers OECD category Optics (including laser optics and quantum optics) R&D Projects EF15_003/0000445 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Open access Institutional support FZU-D - RVO:68378271 UT WOS 001056459800001 EID SCOPUS 85168919372 DOI 10.3390/photonics10080882 Annotation Volumetric modification of transparent materials by femtosecond laser pulses is successfully used in a wide range of practical applications. The level of modification is determined by the locally absorbed energy density, which depends on numerous factors. In this work, it is shown experimentally and theoretically that, in a certain range of laser pulse energies, the peak of absorption of laser radiation for doughnut-shaped (DS) pulses is several times higher than for Gaussian ones. This fact makes the DS pulses very attractive for material modification and direct laser writing applications. Details of the interactions of laser pulses of Gaussian and doughnut shapes with fused silica obtained by numerical simulations are presented for different pulse energies and compared with the experimentally obtained data. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2024 Electronic address https://hdl.handle.net/11104/0344661
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