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We offer active and passive specialty optical fibers for CW, quasi-CW and short-pulsed fiber laser and amplifier applications extending from the low to the high power regime. 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. Both standard and custom designs are possible. Target markets range from industrial (cutting, welding, additive manufacturing, LIDAR), microfabrication, aerospace and defense, medical to telecom. 

LIEKKI® active optical fibers are fabricated using our proprietary direct nano-particle deposition process resulting in high performance and field-proven reliability. All our optical fibers are developed and manufactured in Lohja, Finland.

nLIGHT Finland is part of the vertically integrated nLIGHT, Inc. – headquarter in Camas WA, USA. nLIGHT is a leading provider of high-power semiconductor and fiber lasers for industrial, microfabrication, and aerospace and defense applications.