85 μm core rod fiber amplifier delivering 350 W/m

Mette Marie Johansen, Mattia Michieletto, Torben Kristensen, Thomas Tanggaard Alkeskjold, Jesper Lægsgaard

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Abstract

An improved version of the distributed modal filtering (DMF) rod fiber is tested in a high power setup delivering 350 W/m of extracted signal average power limited by the available pump power. The rod fiber is thoroughly tested to record the transverse modal instability (TMI) behavior and also measure degradation of the TMI threshold with operation time due to induced absorption in the active material increasing the thermo-optical heat load. Multiple testing degrades the rod fiber and TMI threshold from >360 W to a satuarated power level of roughly 240 W.
Original languageEnglish
Title of host publicationProceedings of SPIE
Number of pages6
Volume9728
PublisherSPIE - International Society for Optical Engineering
Publication date2016
Article number97280I
DOIs
Publication statusPublished - 2016
EventFiber Lasers XIII: Technology, Systems, and Applications - The Moscone Center, San Francisco, United States
Duration: 13 Feb 201618 Feb 2016
Conference number: 9728

Conference

ConferenceFiber Lasers XIII: Technology, Systems, and Applications
Number9728
LocationThe Moscone Center
CountryUnited States
CitySan Francisco
Period13/02/201618/02/2016
SeriesProceedings of SPIE, the International Society for Optical Engineering
Volume9728
ISSN0277-786X

Keywords

  • Fibre lasers and amplifiers
  • Design of specific laser systems
  • Optical fibre testing and measurement of fibre parameters
  • Spectral and other filters
  • Other fibre optical devices and techniques
  • Optical coatings and filters
  • Fibre optics
  • laser stability
  • optical fibre amplifiers
  • optical fibre filters
  • optical fibre testing
  • optical pumping
  • thermo-optical effects
  • distributed modal filtering rod fiber
  • rod fiber amplifier
  • pump power
  • transverse modal instability threshold
  • absorption
  • size 85 mum
  • satuarated power thermo-optical
  • thermo-optical heat load
  • active material
  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Fiber
  • Fiber optics amplifiers and oscillators
  • Lasers
  • Thermal effects
  • Fiber lasers
  • Fibers
  • Laser applications
  • Active material
  • Induced absorption
  • Modal filtering
  • Modal instabilities
  • Multiple testing
  • Signal average
  • Thermo-optical
  • Fiber amplifiers

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