Ionization behavior and dynamics of picosecond laser filamentation in sapphire

Currently, laser-induced structural modifications in optical materials have been an active field of research. In this paper, we reported structural modifications in the bulk of sapphire due to picosecond (ps) laser filamentation and analyzed the ionization dynamics of the filamentation. Numerical si...

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Autores principales:	Amina, Ji Lingfei, Yan Tianyang, Ma Rui
Formato:	article
Lenguaje:	EN
Publicado:	Institue of Optics and Electronics, Chinese Academy of Sciences 2019
Materias:	structural modifications sapphire picosecond laser filamentation ionization dynamics Optics. Light QC350-467
Acceso en línea:	https://doaj.org/article/75ed6add12914658b9f34946926e1e76
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spelling	oai:doaj.org-article:75ed6add12914658b9f34946926e1e762021-11-11T09:53:12ZIonization behavior and dynamics of picosecond laser filamentation in sapphire2096-457910.29026/oea.2019.190003https://doaj.org/article/75ed6add12914658b9f34946926e1e762019-08-01T00:00:00Zhttp://www.oejournal.org/article/doi/10.29026/oea.2019.190003https://doaj.org/toc/2096-4579Currently, laser-induced structural modifications in optical materials have been an active field of research. In this paper, we reported structural modifications in the bulk of sapphire due to picosecond (ps) laser filamentation and analyzed the ionization dynamics of the filamentation. Numerical simulations uncovered that the high-intensity ps laser pulses generate plasma through multi-photon and avalanche ionizations that leads to the creation of two distinct types of structural changes in the material. The experimental bulk modifications consist of a void like structures surrounded by cracks which are followed by a submicrometer filamentary track. By increasing laser energy, the length of the damage and filamentary track appeared to increase. In addition, the transverse diameter of the damage zone increased due to the electron plasma produced by avalanche ionizations, but no increase in the filamentary zone diameter was observed with increasing laser energy.AminaJi LingfeiYan TianyangMa RuiInstitue of Optics and Electronics, Chinese Academy of Sciencesarticlestructural modificationssapphirepicosecond laserfilamentationionization dynamicsOptics. LightQC350-467ENOpto-Electronic Advances, Vol 2, Iss 8, Pp 190003-1-190003-7 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	structural modifications sapphire picosecond laser filamentation ionization dynamics Optics. Light QC350-467
spellingShingle	structural modifications sapphire picosecond laser filamentation ionization dynamics Optics. Light QC350-467 Amina Ji Lingfei Yan Tianyang Ma Rui Ionization behavior and dynamics of picosecond laser filamentation in sapphire
description	Currently, laser-induced structural modifications in optical materials have been an active field of research. In this paper, we reported structural modifications in the bulk of sapphire due to picosecond (ps) laser filamentation and analyzed the ionization dynamics of the filamentation. Numerical simulations uncovered that the high-intensity ps laser pulses generate plasma through multi-photon and avalanche ionizations that leads to the creation of two distinct types of structural changes in the material. The experimental bulk modifications consist of a void like structures surrounded by cracks which are followed by a submicrometer filamentary track. By increasing laser energy, the length of the damage and filamentary track appeared to increase. In addition, the transverse diameter of the damage zone increased due to the electron plasma produced by avalanche ionizations, but no increase in the filamentary zone diameter was observed with increasing laser energy.
format	article
author	Amina Ji Lingfei Yan Tianyang Ma Rui
author_facet	Amina Ji Lingfei Yan Tianyang Ma Rui
author_sort	Amina
title	Ionization behavior and dynamics of picosecond laser filamentation in sapphire
title_short	Ionization behavior and dynamics of picosecond laser filamentation in sapphire
title_full	Ionization behavior and dynamics of picosecond laser filamentation in sapphire
title_fullStr	Ionization behavior and dynamics of picosecond laser filamentation in sapphire
title_full_unstemmed	Ionization behavior and dynamics of picosecond laser filamentation in sapphire
title_sort	ionization behavior and dynamics of picosecond laser filamentation in sapphire
publisher	Institue of Optics and Electronics, Chinese Academy of Sciences
publishDate	2019
url	https://doaj.org/article/75ed6add12914658b9f34946926e1e76
work_keys_str_mv	AT amina ionizationbehavioranddynamicsofpicosecondlaserfilamentationinsapphire AT jilingfei ionizationbehavioranddynamicsofpicosecondlaserfilamentationinsapphire AT yantianyang ionizationbehavioranddynamicsofpicosecondlaserfilamentationinsapphire AT marui ionizationbehavioranddynamicsofpicosecondlaserfilamentationinsapphire
_version_	1718439228270968832

Ionization behavior and dynamics of picosecond laser filamentation in sapphire

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