Inhibition and enhancement of linear and nonlinear optical effects by conical phase front shaping for femtosecond laser material processing

Abstract The emergence of high-powered femtosecond lasers presents the opportunity for large volume processing inside of transparent materials, wherein a myriad of nonlinear optical and aberration effects typically convolves to distort the focused beam shape. In this paper, convex and concave conica...

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Autores principales:	Ehsan Alimohammadian, Erden Ertorer, Erick Mejia Uzeda, Jianzhao Li, Peter R. Herman
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/3a0d000ccd96432594a1b904ac718dfe
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spelling	oai:doaj.org-article:3a0d000ccd96432594a1b904ac718dfe2021-12-02T12:33:14ZInhibition and enhancement of linear and nonlinear optical effects by conical phase front shaping for femtosecond laser material processing10.1038/s41598-020-78373-42045-2322https://doaj.org/article/3a0d000ccd96432594a1b904ac718dfe2020-12-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-78373-4https://doaj.org/toc/2045-2322Abstract The emergence of high-powered femtosecond lasers presents the opportunity for large volume processing inside of transparent materials, wherein a myriad of nonlinear optical and aberration effects typically convolves to distort the focused beam shape. In this paper, convex and concave conical phase fronts were imposed on femtosecond laser beams and focussed into wide-bandgap glass to generate a vortex beam with tuneable Gaussian-Bessel features offset from the focal plane. The influence of Kerr lensing, plasma defocussing, and surface aberration on the conical phase front shaping were examined over low to high pulse energy delivery and for shallow to deep processing tested to 2.5 mm focussing depth. By isolating the underlying processes, the results demonstrate how conical beams can systematically manipulate the degree of nonlinear interaction and surface aberration to facilitate a controllable inhibition or enhancement of Kerr lensing, plasma defocussing, and surface aberration effects. In this way, long and uniform filament tracks have been generated over shallow to deep focussing by harnessing surface aberration and conical beam shaping without the destabilizing Kerr lensing and plasma defocussing effects. A facile means for compressing and stretching of the focal interaction volume is presented for controlling the three-dimensional micro- and nano-structuring of transparent materials.Ehsan AlimohammadianErden ErtorerErick Mejia UzedaJianzhao LiPeter R. HermanNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-13 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Ehsan Alimohammadian Erden Ertorer Erick Mejia Uzeda Jianzhao Li Peter R. Herman Inhibition and enhancement of linear and nonlinear optical effects by conical phase front shaping for femtosecond laser material processing
description	Abstract The emergence of high-powered femtosecond lasers presents the opportunity for large volume processing inside of transparent materials, wherein a myriad of nonlinear optical and aberration effects typically convolves to distort the focused beam shape. In this paper, convex and concave conical phase fronts were imposed on femtosecond laser beams and focussed into wide-bandgap glass to generate a vortex beam with tuneable Gaussian-Bessel features offset from the focal plane. The influence of Kerr lensing, plasma defocussing, and surface aberration on the conical phase front shaping were examined over low to high pulse energy delivery and for shallow to deep processing tested to 2.5 mm focussing depth. By isolating the underlying processes, the results demonstrate how conical beams can systematically manipulate the degree of nonlinear interaction and surface aberration to facilitate a controllable inhibition or enhancement of Kerr lensing, plasma defocussing, and surface aberration effects. In this way, long and uniform filament tracks have been generated over shallow to deep focussing by harnessing surface aberration and conical beam shaping without the destabilizing Kerr lensing and plasma defocussing effects. A facile means for compressing and stretching of the focal interaction volume is presented for controlling the three-dimensional micro- and nano-structuring of transparent materials.
format	article
author	Ehsan Alimohammadian Erden Ertorer Erick Mejia Uzeda Jianzhao Li Peter R. Herman
author_facet	Ehsan Alimohammadian Erden Ertorer Erick Mejia Uzeda Jianzhao Li Peter R. Herman
author_sort	Ehsan Alimohammadian
title	Inhibition and enhancement of linear and nonlinear optical effects by conical phase front shaping for femtosecond laser material processing
title_short	Inhibition and enhancement of linear and nonlinear optical effects by conical phase front shaping for femtosecond laser material processing
title_full	Inhibition and enhancement of linear and nonlinear optical effects by conical phase front shaping for femtosecond laser material processing
title_fullStr	Inhibition and enhancement of linear and nonlinear optical effects by conical phase front shaping for femtosecond laser material processing
title_full_unstemmed	Inhibition and enhancement of linear and nonlinear optical effects by conical phase front shaping for femtosecond laser material processing
title_sort	inhibition and enhancement of linear and nonlinear optical effects by conical phase front shaping for femtosecond laser material processing
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/3a0d000ccd96432594a1b904ac718dfe
work_keys_str_mv	AT ehsanalimohammadian inhibitionandenhancementoflinearandnonlinearopticaleffectsbyconicalphasefrontshapingforfemtosecondlasermaterialprocessing AT erdenertorer inhibitionandenhancementoflinearandnonlinearopticaleffectsbyconicalphasefrontshapingforfemtosecondlasermaterialprocessing AT erickmejiauzeda inhibitionandenhancementoflinearandnonlinearopticaleffectsbyconicalphasefrontshapingforfemtosecondlasermaterialprocessing AT jianzhaoli inhibitionandenhancementoflinearandnonlinearopticaleffectsbyconicalphasefrontshapingforfemtosecondlasermaterialprocessing AT peterrherman inhibitionandenhancementoflinearandnonlinearopticaleffectsbyconicalphasefrontshapingforfemtosecondlasermaterialprocessing
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Inhibition and enhancement of linear and nonlinear optical effects by conical phase front shaping for femtosecond laser material processing

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