High power laser delivery using anti-resonant hollow core fiber

Amy van Newkirk, Julian Martinez Mercado, Enrique Antonio Lopez, Rodrigo Amezcua Correa, Axel Schulzgen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Currently, the power handling capability of optical fibers is primarily limited by glass damage thresholds and induced nonlinearities, including stimulated Brillouin scattering and stimulated Raman scattering. In order to mitigate unwanted nonlinear effects, a majority of high power delivery fibers have increased core sizes, which are generally used near the threshold of multimode operation. Under high power, thermal changes lead to transverse mode instabilities which degrade the overall beam quality. We have been investigating hollow core fibers based on the anti-resonant effect (ARHCF) due to their excellent guiding properties, such as low loss, large core sizes, wide transmission windows, and significantly increased optical nonlinearity and damage thresholds. Anti-resonant HCFs have significantly simpler designs compared to other microstructured fibers, namely photonic bandgap fibers, which leads to more flexibility and less complex fabrication. An ARHCF design was optimized in Comsol Multiphysics for single mode operation, low propagation loss, and low bending loss. The ARHCF was fabricated at the University of Central Florida. Initial testing has shown that power handling up to 170 W input, 0.7 GW/cm2 at the fiber facet is possible with no damage to the fiber.

Original languageEnglish (US)
Title of host publicationPhotonic Fiber and Crystal Devices
Subtitle of host publicationAdvances in Materials and Innovations in Device Applications XV
EditorsShizhuo Yin, Ruyan Guo
PublisherSPIE
ISBN (Electronic)9781510644908
DOIs
StatePublished - 2021
EventPhotonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications XV 2021 - San Diego, United States
Duration: Aug 1 2021Aug 5 2021

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume11826
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferencePhotonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications XV 2021
Country/TerritoryUnited States
CitySan Diego
Period8/1/218/5/21

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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