Tm/Ho Doped Fibers

Lasers & Amplifiers Fibers

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For fiber lasers from 1.9 to 2.2 µm

iXblue proposes a wide range of Thulium/Holmium doped optical fibers for amplifiers and fiber lasers.

For high power CW and pulsed lasers ~2 µm

Triple clad design to be used in high power regime for amplifiers and fiber lasers configuration.


Benefits & Features

  • CW and pulsed fiber lasers @ 2 µm
  • High pump and consistent absorption
  • Low M² and NA
  • Large mode area
  • High efficiency
  • High Tm₂0₃ concentration
  • High efficiency
  • Heat dissipation
  • Eye-safe lasers


  • 2 µm CW & pulsed lasers
  • 2 µm amplifiers
  • Military and commercial LIDAR
  • Laser weapon

Main Specifications



Polarization Maintaining (PM)
Fiber type
Product Specification Datasheet
Double Clad Fibers
IXF-2CF-TmHo-O-6-130-0.21 6 µm core diameter PDF More info
IXF-2CF-TmHo-O-25-250 24 µm core diameter PDF More info
IXF-2CF-TmHo-PM-6-130-0.021 6 µm core diameter
PM Panda structrure
PDF More info
IXF-2CF-TmHo-PM-20-300 20 µm core diamater
PM Panda structure
PDF More info
IXF-2CF-TmHo-PM-25-300-0.09 25 µm core diameter
PM Panda structrure
More info
Triple Clad Fibers
IXF-3CF-TmHo-PM-18-270-300-0.09 18 µm core diameter
PM Panda structure
PDF More info


  • P195-w continuous wave laser emission at 2.09 μm from a Tm3+,Ho3+-codoped single-oscillator monolithic fiber laserower efficient all-fiberized 12-core erbium/ytterbium doped optical amplifier

    C. Louot, A. Hildenbrand-Dhollande, N. Dalloz, A. Motard (French-german research Institute of Saint-Louis); T. Robin, B. Cadier (iXblue); I. Manek-Hönninger (Université Bordeaux, CNRS CEA, CELIA)

    OSA Laser Congress – OCTOBER 2020

    We report on a high efficiency (45%) single-oscillator monolithic Tm3+, Ho3+-codoped fiber laser emitting 195 W at 2.09 µm in CW mode of operation, with a beam quality near the diffraction limit (M2 = 1.08).

    Learn more
  • High peak power single-frequency amplifier based on a er-yb doped polarization maintaining lma fiber

    A. Durécu, P. Bourdon, F. Gustave, H. Jacqmin, J. Le Gouët & L. Lombard (ONERA)

    Conference on Lasers and Electro-Optics (CLEO) – May 2018

    We report on single-frequency all-fiber amplifiers based on PM Er-Yb doped P2O5-Al2O3-SiO2 fibers. Peak power up to 700W at 1545nm for 730ns pulse duration has been obtained with a good beam quality and a 17dB PER was measured.

    Learn more
  • Ixnews 2018 photonics west special issue: erbium-ytterbium doped optical fibers

    T. Robin (iXblue)

    iXnews Photonics West Special Issue CTO iXblue Specialty Fibers division, on Er/Yb doped optical fibers Volume, #1 p.3 – 37 – January 2018

    When iXFiber was created in 2006, most of the team had some experience with Erbium-Ytterbium co-doped double clad fibers.