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Nkt Photonics As | Date: 2010-08-30

A method and a laser system for generating a pulsed laser signal with a laser signal wavelength and a laser signal repetition rate, the laser system includes a fiber laser unit includes a cladding pumped fiber laser includes a fiber laser light guiding region surrounded by a pump cladding, the fiber laser light guiding region includes at least one active element; at least one pump laser unit for launching a pump signal into the cladding pumped fiber laser, the pump signal unit includes at least one pump diode emitting a signal at a pump signal wavelength; and a modulating unit for modulating the pump signal into a plurality of pump pulses.

Hansen K.P.,NKT Photonics AS | Olausson C.B.,NKT Photonics AS | Olausson C.B.,Technical University of Denmark | Broeng J.,NKT Photonics AS | And 11 more authors.
Optical Engineering

High-power fiber lasers and amplifiers have gained tremendous momentum in the last 5 years. Many of the traditional manufacturers of gas and solid-state lasers are now pursuing the fiber-based systems, which are displacing the conventional technology in many areas. High-power fiber laser systems require reliable fibers with large cores, stable mode quality, and good power handling capabilities-requirements that are all met by the airclad fiber technology. In the present paper we go through many of the building blocks needed to build high-power systems and we show an example of a complete airclad laser system. We present the latest advancements within airclad fiber technology including a new 100 m single-mode polarization-maintaining rod-type fiber capable of amplifying to megawatt power levels. Furthermore, we describe the novel airclad-based pump combiners and their use in a completely monolithic 350 W cw fiber laser system with an M2 of less than 1.1. © 2011 Society of Photo-Optical Instrumentation Engineers (SPIE). Source

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