Q-switching and efficient harmonic generation from a single-mode LMA photonic bandgap rod fiber laser

Marko Laurila, Julien Saby, Thomas T. Alkeskjold, Lara Scolari, Benjamin Cocquelin, Francois Salin, Jes Broeng, Jesper Lægsgaard

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We demonstrate a Single-Mode (SM) Large-Mode-Area (LMA) ytterbium-doped PCF rod fiber laser with stable and close to diffraction limited beam quality with 110W output power. Distributed-Mode-Filtering (DMF) elements integrated in the cladding of the rod fiber provide a robust spatial mode with a Mode-Field-Diameter (MFD) of 59 mu m. We further demonstrate high pulse energy Second-Harmonic-Generation (SHG) and Third Harmonic Generation (THG) using a simple Q-switched single-stage rod fiber laser cavity architecture reaching pulse energies up to 1mJ at 515nm and 0.5mJ at 343nm. (C) 2011 Optical Society of America
Original languageEnglish
JournalOptics Express
Issue number11
Pages (from-to)10824-10833
Publication statusPublished - 2011

Bibliographical note

This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org.globalproxy.cvt.dk/abstract.cfm?URI=oe-19-11-10824. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.


  • Micro structured fibers
  • Lasers, fibers
  • Fiber Optics


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