Interaction of doughnut-shaped laser pulses with glasses

0481237 - FZÚ 2018 RIV US eng J - Článek v odborném periodiku
Zhukov, V.P. - Rubenchik, A.M. - Fedoruk, M.P. - Bulgakova, Nadezhda M.
Interaction of doughnut-shaped laser pulses with glasses.
Journal of the Optical Society of America. B. Roč. 34, č. 2 (2017), s. 463-471. ISSN 0740-3224. E-ISSN 1520-8540
Grant CEP: GA MŠMT LO1602; GA MŠMT EF15_003/0000445; GA MŠMT LM2015086
Grant ostatní: OP VVV - BIATRI(XE) CZ.02.1.01/0.0/0.0/15_003/0000445
Institucionální podpora: RVO:68378271
Klíčová slova: femtosecond-laser * transparent materials * wave-guides * photonic devices * fused-silica * dielectrics * media * filamentation * fabrication * ionization
Obor OECD: Optics (including laser optics and quantum optics)
Impakt faktor: 2.048, rok: 2017

Non-Gaussian laser beams can open new opportunities for microfabrication, including ultrashort laser direct writing. Using a model based on Maxwell's equations, we have investigated the dynamics of doughnut-shaped laser beams focused inside fused silica glass, in comparison with Gaussian pulses of the same energy. The laser propagation dynamics reveals intriguing features of beam splitting and sudden collapse toward the beam axis, overcoming the intensity clamping effect. The resulting structure of light absorption represents a very hot, hollow nanocylinder, which can lead to an implosion process that brings matter to extreme thermodynamic states.
Trvalý link: http://hdl.handle.net/11104/0276831