nLight offer active and passive optical fibers (produced in Finland) for CW, quasi-CW and short-pulsed fiber laser and amplifier applications extending from the low to the high power regime.​​ LIEKKI® active optical fibers are fabricated using our proprietary direct nano-particle deposition process resulting in high performance and high reliability. Active fibers are available with either Ytterbium (Yb), Erbium (Er) or Thulium (Tm) and offered over a range of dopant concentration levels, cladding types and core diameters. ​

Proven reliability

Unmatched reliability proven over the years with thousands of high power lasers deployed across a variety of industries and applications.​

Independent core profile control

nLIGHT Liekki fiber provides precise profile and doping control with hundreds of layers of nanoparticles.

Direct nanoparticle deposition process

nLIGHT’s proprietary single-step deposition process reduces background loss and application length to provide higher efficiency.​​​​

realNA

The most accurate fiber core NA measurements coupled with excellent homogeneity and batch-to-batch uniformity provide consistent performance.

Features and Benefits

Absorption for ultra-fast pulsed fiber lasers

  • Highest absorptions enable shortest fiber lengths.
  • Application lengths reduce by up to 30% compared to industry standard.
  • Breadth of polarization maintaining fibers optimized for beam quality and high nonlinearity threshold.
  • Ideal for your ultra-fast fiber laser.

Power and reliability for continuous wave fiber lasers

  • Leading high-power CW fiber laser manufacturers trust LIEKKI fibers.
  • Thousands of multi-kW class fiber lasers with nLIGHT fibers in the field.
  • Proven long-term reliability at multi-kW power levels.
  • Low background loss and high efficiency.
  • Coatings support high power, temperature and humidity for consistent performance in any environment.

High-power delivery in diode lasers and fiber lasers

  • nLIGHT passive fibers for any component in your fiber laser: designed to match.
  • Choose from a variety of multimode fibers to meet your power delivery needs.
  • nLIGHT delivery fibers support multi-kW applications for thousands of hours and performance.

Batch-to-batch consistency

  • Precise radial control of dopants and RIP deliver batch-to-batch uniformity and the best core NA tolerances in the industry.
  • Leading fiber laser manufacturers choose nLIGHT fibers for reliability, consistency and performance.

Download Liekki Fiber datasheet here.