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Optical Engineering

Airclad fiber laser technology
Author(s): Kim Per Hansen; Jes Broeng; Martin D. Maack; Thomas T. Alkeskjold; Thomas Nikolajsen; Peter M. W. Skovgaard; Mads H. Sørensen; Mark Denninger; Christian Jakobsen; Harald R. Simonsen; Christina B. Olausson; Danny Noordegraaf; Marko Laurila
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Paper Abstract

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 μm 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.

Paper Details

Date Published: 1 November 2011
PDF: 10 pages
Opt. Eng. 50(11) 111609 doi: 10.1117/1.3631872
Published in: Optical Engineering Volume 50, Issue 11
Show Author Affiliations
Kim Per Hansen, NKT Photonics A/S (Denmark)
Jes Broeng, NKT Photonics A/S (Denmark)
Martin D. Maack, NKT Photonics A/S (Denmark)
Thomas T. Alkeskjold, NKT Photonics A/S (Denmark)
Thomas Nikolajsen, NKT Photonics A/S (Denmark)
Peter M. W. Skovgaard, NKT Photonics A/S (Denmark)
Mads H. Sørensen, NKT Photonics A/S (Denmark)
Mark Denninger, NKT Photonics A/S (Denmark)
Christian Jakobsen, NKT Photonics A/S (Denmark)
Harald R. Simonsen, NKT Photonics A/S (Denmark)
Christina B. Olausson, NKT Photonics A/S (Denmark)
Danny Noordegraaf, NKT Photonics A/S (Denmark)
Marko Laurila, Technical Univ. of Denmark (Denmark)


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