Laser-induced damages in silica multimode optical fibers

Mario Ferraro, Fabio Mangini, Yifan Sun, Mario Zitelli, Rocco Crescenzi, Alioune Niang, Maria C. Crocco, Vincenzo Formoso, Raffaele G. Agostino, Riccardo Barberi, Antonio De Luca, Alessandro Tonello, Sergey A. Babin, Vincent Couderc, Stefan Wabnitz

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Abstract

We study multiphoton absorption-induced damages to standard silica multimode optical fibers, induced by means of femtosecond infrared laser beams. During the damaging process, the dynamics of beam propagation turns out to non-trivially evolve over a time scale of several hours. Such a long term evolution produces an irreversible drop of the optical transmission, which is accompanied by a drastic change of the output supercontinuum spectrum. A microscopic analysis of the damages was carried out by means of both optical microscopy and absorption-contrast computed X-ray tomography. This has permitted us to obtain information about the sign of the refractive index variation which is induced by the optical breakdown. Our results will find application in a wide array of emerging technologies employing high-power fiber optic beams, such as fiber lasers and micromachining.

Original languageEnglish
Title of host publicationFiber Lasers and Glass Photonics
Subtitle of host publicationMaterials through Applications III
EditorsMaurizio Ferrari, Angela B. Seddon, Stefano Taccheo, Stefano Taccheo
PublisherSPIE
ISBN (Electronic)9781510651609
DOIs
Publication statusPublished - 2022
EventFiber Lasers and Glass Photonics: Materials through Applications III 2022 - Virtual, Online
Duration: 9 May 202220 May 2022

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume12142
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceFiber Lasers and Glass Photonics: Materials through Applications III 2022
CityVirtual, Online
Period09.05.202220.05.2022

Keywords

  • laser damages
  • Multimode fibers
  • multiphoton ionization
  • X-ray tomography

OECD FOS+WOS

  • 1.03 PHYSICAL SCIENCES AND ASTRONOMY
  • 2.02 ELECTRICAL ENG, ELECTRONIC ENG

Fingerprint

Dive into the research topics of 'Laser-induced damages in silica multimode optical fibers'. Together they form a unique fingerprint.

Cite this