Understanding the effect of wet etching on damage resistance of surface scratches

Abstract Fused silica optics often exhibit surface scratches after polishing that radically reduce their damage resistance at the wavelength of 351 nm in the nanosecond regime. Consequently, chemical treatments after polishing are often used to increase the damage threshold and ensure a safe operati...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Benoit Da Costa Fernandes, Mathilde Pfiffer, Philippe Cormont, Marc Dussauze, Bruno Bousquet, Evelyne Fargin, Jerome Neauport
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/a72e76f10a9c4440adaf80a17bc066d5
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:a72e76f10a9c4440adaf80a17bc066d5
record_format	dspace
spelling	oai:doaj.org-article:a72e76f10a9c4440adaf80a17bc066d52021-12-02T15:08:50ZUnderstanding the effect of wet etching on damage resistance of surface scratches10.1038/s41598-018-19716-02045-2322https://doaj.org/article/a72e76f10a9c4440adaf80a17bc066d52018-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-19716-0https://doaj.org/toc/2045-2322Abstract Fused silica optics often exhibit surface scratches after polishing that radically reduce their damage resistance at the wavelength of 351 nm in the nanosecond regime. Consequently, chemical treatments after polishing are often used to increase the damage threshold and ensure a safe operation of these optics in large fusion-scale laser facilities. Here, we investigate the reasons for such an improvement. We study the effect of an HF-based wet etching on scratch morphology and propose a simple analytic model to reflect scratch widening during etching. We also use a finite element model to evaluate the effect of the morphological modification induced by etching on the electric field distribution in the vicinity of the scratch. We evidence that this improvement of the scratch damage resistance is due to a reduction of the electric field enhancement. This conclusion is supported by secondary electron microscopy (SEM) imaging of damage sites initiated on scratches after chemical treatment.Benoit Da Costa FernandesMathilde PfifferPhilippe CormontMarc DussauzeBruno BousquetEvelyne FarginJerome NeauportNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-9 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Benoit Da Costa Fernandes Mathilde Pfiffer Philippe Cormont Marc Dussauze Bruno Bousquet Evelyne Fargin Jerome Neauport Understanding the effect of wet etching on damage resistance of surface scratches
description	Abstract Fused silica optics often exhibit surface scratches after polishing that radically reduce their damage resistance at the wavelength of 351 nm in the nanosecond regime. Consequently, chemical treatments after polishing are often used to increase the damage threshold and ensure a safe operation of these optics in large fusion-scale laser facilities. Here, we investigate the reasons for such an improvement. We study the effect of an HF-based wet etching on scratch morphology and propose a simple analytic model to reflect scratch widening during etching. We also use a finite element model to evaluate the effect of the morphological modification induced by etching on the electric field distribution in the vicinity of the scratch. We evidence that this improvement of the scratch damage resistance is due to a reduction of the electric field enhancement. This conclusion is supported by secondary electron microscopy (SEM) imaging of damage sites initiated on scratches after chemical treatment.
format	article
author	Benoit Da Costa Fernandes Mathilde Pfiffer Philippe Cormont Marc Dussauze Bruno Bousquet Evelyne Fargin Jerome Neauport
author_facet	Benoit Da Costa Fernandes Mathilde Pfiffer Philippe Cormont Marc Dussauze Bruno Bousquet Evelyne Fargin Jerome Neauport
author_sort	Benoit Da Costa Fernandes
title	Understanding the effect of wet etching on damage resistance of surface scratches
title_short	Understanding the effect of wet etching on damage resistance of surface scratches
title_full	Understanding the effect of wet etching on damage resistance of surface scratches
title_fullStr	Understanding the effect of wet etching on damage resistance of surface scratches
title_full_unstemmed	Understanding the effect of wet etching on damage resistance of surface scratches
title_sort	understanding the effect of wet etching on damage resistance of surface scratches
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/a72e76f10a9c4440adaf80a17bc066d5
work_keys_str_mv	AT benoitdacostafernandes understandingtheeffectofwetetchingondamageresistanceofsurfacescratches AT mathildepfiffer understandingtheeffectofwetetchingondamageresistanceofsurfacescratches AT philippecormont understandingtheeffectofwetetchingondamageresistanceofsurfacescratches AT marcdussauze understandingtheeffectofwetetchingondamageresistanceofsurfacescratches AT brunobousquet understandingtheeffectofwetetchingondamageresistanceofsurfacescratches AT evelynefargin understandingtheeffectofwetetchingondamageresistanceofsurfacescratches AT jeromeneauport understandingtheeffectofwetetchingondamageresistanceofsurfacescratches
_version_	1718388019282575360

Understanding the effect of wet etching on damage resistance of surface scratches

Ejemplares similares