Omnidirectional iridescence via cylindrically-polarized femtosecond laser processing

We report the femtosecond (fs) laser fabrication of biomimetic omnidirectional iridescent metallic surfaces exhibiting efficient diffraction for practically any angle of light incidence. Such diffractive behavior is realized by means of multi-directional low-spatial-frequency, laser-induced periodic...

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Autores principales:	Livakas Nikolaos, Skoulas Evangelos, Stratakis Emmanuel
Formato:	article
Lenguaje:	EN
Publicado:	Institue of Optics and Electronics, Chinese Academy of Sciences 2020
Materias:	laser processing structural colors radial polarisation Optics. Light QC350-467
Acceso en línea:	https://doaj.org/article/86bd7c20a45f43e19ed314edac5ad9c8
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id	oai:doaj.org-article:86bd7c20a45f43e19ed314edac5ad9c8
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spelling	oai:doaj.org-article:86bd7c20a45f43e19ed314edac5ad9c82021-11-10T10:12:43ZOmnidirectional iridescence via cylindrically-polarized femtosecond laser processing2096-457910.29026/oea.2020.190035https://doaj.org/article/86bd7c20a45f43e19ed314edac5ad9c82020-05-01T00:00:00Zhttp://www.oejournal.org/article/doi/10.29026/oea.2020.190035https://doaj.org/toc/2096-4579We report the femtosecond (fs) laser fabrication of biomimetic omnidirectional iridescent metallic surfaces exhibiting efficient diffraction for practically any angle of light incidence. Such diffractive behavior is realized by means of multi-directional low-spatial-frequency, laser-induced periodic surface structures (LSFL) formed upon exploiting the cylindrical symmetry of a cylindrical vector (CV) fs field. We particularly demonstrate that the multi-directional gratings formed on stainless steel surface by a radially polarized fs beam, could mimic the omnidirectional structural coloration properties found in some natural species. Accordingly, the fabricated grating structures can spatially disperse the incident light into individual wavelength with high efficiency, exhibiting structural iridescence at all viewing angles. Analytical calculations using the grating equation reproduced the characteristic variation of the vivid colors observed as a function of incident angle. We envisage that our results will significantly contribute to the development of new photonic and light sensing devices.Livakas NikolaosSkoulas EvangelosStratakis EmmanuelInstitue of Optics and Electronics, Chinese Academy of Sciencesarticlelaser processingstructural colorsradial polarisationOptics. LightQC350-467ENOpto-Electronic Advances, Vol 3, Iss 5, Pp 190035-1-190035-8 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	laser processing structural colors radial polarisation Optics. Light QC350-467
spellingShingle	laser processing structural colors radial polarisation Optics. Light QC350-467 Livakas Nikolaos Skoulas Evangelos Stratakis Emmanuel Omnidirectional iridescence via cylindrically-polarized femtosecond laser processing
description	We report the femtosecond (fs) laser fabrication of biomimetic omnidirectional iridescent metallic surfaces exhibiting efficient diffraction for practically any angle of light incidence. Such diffractive behavior is realized by means of multi-directional low-spatial-frequency, laser-induced periodic surface structures (LSFL) formed upon exploiting the cylindrical symmetry of a cylindrical vector (CV) fs field. We particularly demonstrate that the multi-directional gratings formed on stainless steel surface by a radially polarized fs beam, could mimic the omnidirectional structural coloration properties found in some natural species. Accordingly, the fabricated grating structures can spatially disperse the incident light into individual wavelength with high efficiency, exhibiting structural iridescence at all viewing angles. Analytical calculations using the grating equation reproduced the characteristic variation of the vivid colors observed as a function of incident angle. We envisage that our results will significantly contribute to the development of new photonic and light sensing devices.
format	article
author	Livakas Nikolaos Skoulas Evangelos Stratakis Emmanuel
author_facet	Livakas Nikolaos Skoulas Evangelos Stratakis Emmanuel
author_sort	Livakas Nikolaos
title	Omnidirectional iridescence via cylindrically-polarized femtosecond laser processing
title_short	Omnidirectional iridescence via cylindrically-polarized femtosecond laser processing
title_full	Omnidirectional iridescence via cylindrically-polarized femtosecond laser processing
title_fullStr	Omnidirectional iridescence via cylindrically-polarized femtosecond laser processing
title_full_unstemmed	Omnidirectional iridescence via cylindrically-polarized femtosecond laser processing
title_sort	omnidirectional iridescence via cylindrically-polarized femtosecond laser processing
publisher	Institue of Optics and Electronics, Chinese Academy of Sciences
publishDate	2020
url	https://doaj.org/article/86bd7c20a45f43e19ed314edac5ad9c8
work_keys_str_mv	AT livakasnikolaos omnidirectionaliridescenceviacylindricallypolarizedfemtosecondlaserprocessing AT skoulasevangelos omnidirectionaliridescenceviacylindricallypolarizedfemtosecondlaserprocessing AT stratakisemmanuel omnidirectionaliridescenceviacylindricallypolarizedfemtosecondlaserprocessing
_version_	1718440115396673536

Omnidirectional iridescence via cylindrically-polarized femtosecond laser processing

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