High-Power Semiconductor Lasers
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LIEKKI™ YTTERBIUM FIBERS
nLIGHT’s ytterbium fiber product series offers moderate to extremely high dopant concentrations resulting in application lengths suitable for multiple applications. Our direct nanoparticle deposition (DND) fiber production technology allows creating fibers with very high homogeneity minimizing clustering and photodarkening.

LIEKKI™ ytterbium fibers are available in the following fiber types
  • Single mode and large mode area (LMA)
  • Single, double and triple cladding
  • Polarization maintaining (PM) and non-PM

Our LIEKKI™ Yb700, Yb1200 and Yb2000 product series covers the broad application field of ytterbium fibers ranging from low-power preamplifiers to high-average-power pulsed amplifiers and high-continuous wave (CW) power fiber lasers.

Explanation for LIEKKI™ fiber product codes
AABBBB-CC/DDOpt 1 – Opt 2 – Opt 3 AA = Fiber dopant
BBBB = Peak core absorption at 976nm for ytterbium
Peak core absorption at 1530nm for erbium
CC = Core diameter
DD = Cladding diameter
Opt 1 = Double clad/DC
Opt 2 = Polarization maintaining/PM
Opt 3 = High cutoff/HC

For academic users we offer a special product package. Please contact us for more information.
LIEKKI™ Yb700-20/125
LIEKKI™ Yb700-20/125 fibers are amplifier fibers for low to medium output powers. The fibers have high photodarkening resistivity and a short application length.
LIEKKI™ Yb700-25/250
LIEKKI™ Yb700-25/250 fibers are amplifier fibers for medium to high output powers. The fibers have high photodarkening resistivity and a short application length.
LIEKKI™ Yb700-30/250
LIEKKI™ Yb700-30/250 fibers are amplifier fibers for medium to high output powers. The fibers have high photodarkening resistivity and a short application length.
LIEKKI™ Yb1200-4/125
LIEKKI™ Yb1200-4/125 fibers are highly doped single mode ytterbium fibers for low-noise, low-nonlinearity preamplifiers and lasers.
LIEKKI™ Yb1200-6/125
LIEKKI™ Yb1200-6/125 fibers are highly doped single mode ytterbium 
fibers for medium-power fiber laser and amplifier applications.
LIEKKI™ Yb1200-10/125
LIEKKI™ Yb1200-10/125 fibers are highly doped large mode area ytterbium fibers for medium-power fiber laser and amplifier applications.
LIEKKI™ Yb1200-12/125
LIEKKI™ Yb1200-12/125 fibers are highly doped ytterbium fibers for medium-power fiber laser and amplifier applications.
LIEKKI™ Yb1200-20/125
LIEKKI™ Yb1200-20/125 fibers are highly doped ytterbium fibers ideally suited for compact high-average-power pulsed amplifier applications where large mode area and short fiber length are critical for suppression of nonlinear effects.
LIEKKI™ Yb1200-20/400
LIEKKI™ Yb1200-20/400 fibers are highly doped ytterbium fibers for medium-power fiber lasers and amplifiers.
LIEKKI™ Yb1200-25/250
LIEKKI™ Yb1200-25/250 fibers are highly doped ytterbium fibers which feature very high cladding absorption, high efficiency per application length and excellent beam quality.
LIEKKI™ Yb1200-30/250
LIEKKI™ Yb1200-30/250 fibers are highly doped ytterbium fibers which feature very high cladding absorption, high efficiency per application length and excellent beam quality.
LIEKKI™ Yb2000-7/125
LIEKKI™ Yb2000-7/125 fibers are highly doped, have very high photodarkening resistivity and are suitable for low-power amplifier or laser applications.
LIEKKI™ Yb2000-10/125

LIEKKI™ Yb2000-10/125 fibers are highly doped, have very high photodarkening resistivity and are suitable for low-power amplifier or laser applications.

EASY SPLICE SOFTWARE
LIEKKI™ EasySplice is complimentary software that provides you with optimal splicing parameters for all LIEKKI™ fibers.

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