YDF-DC-40/400-PM-TPR - Photodarkening free Yb-doped Double Clad Polarization-Maintaining tapeted fiber

YDF-DC-40/400-PM-TPR - Photodarkening free Yb-doped Double Clad Polarization-Maintaining tapeted fiber

FORC-Photonics

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YDF-DC-40/400-PM-TPR

Count

  • Core NA 
  •  0.085 ± 0.01
  • Clad NA 
  •  > 0.26 
  • Clad shape 
  •  PANDA with F-doped second cladding
  • Clad absorption (915 nm) 
  •  > 2.5  dB/m
  • Clad absorption (976 nm) 
  •  > 10 dB/m
  • Description
  • Features

YDF-DC-40/400-PM-TPR series is designed for operation without any power degradation in extremely high-peak-power cladding-pumped amplifiers. The new tapered fiber design have a single-mode end (typical dimension is 8/80 µm) for signal input and a very-large-mode-area end (typical dimension is 40/400 µm) for signal output and pump input. The all-glass double-clad fiber design (based on highly F-doped second cladding with typical NA=0.26) allow simple polishing of the thick 400 µm fiber end. Due to a high Yb concentration and a short tapered fiber length amplifiers based on this fiber has the highest threshold of nonlinear effects over the market (up to 0.5 MW) together with the diffraction limited beam quality at the output.

Fiber specifications

Type of signal  Signal input end  Signal output / pump input end 
Core diameter, µm  9 ± 1  > 40 
Clad diameter, µm  90 ± 10 450 ± 100
Cutoff wavelength, µm  <1.0 -
MFD, µm  10.0 ± 2.0 > 20 (25-30 typical)

Other parameters including PM version are available on the request

JSC «Leningrad Laser Systems» (LLS) is the official distributor of FORC-Photonics and offers full technical support and worldwide shipping of products.

Features
  • Parameter
    Value
  • Core NA 
     0.085 ± 0.01
  • Clad NA 
     > 0.26 
  • Clad shape 
     PANDA with F-doped second cladding
  • Clad absorption (915 nm) 
     > 2.5  dB/m
  • Clad absorption (976 nm) 
     > 10 dB/m
  • Background loss (1150 nm) 
     <  50  dB/km
  • Photodarkening resistance 
     > 20 times better compare to the Al2O3-SiO2 Yb-doped fiber