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

doi:10.1364/OE.19.010824

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

Opt Express. 2011 May 23;19(11):10824-33. doi: 10.1364/OE.19.010824.

Authors

Marko Laurila¹, Julien Saby, Thomas T Alkeskjold, Lara Scolari, Benjamin Cocquelin, Francois Salin, Jes Broeng, Jesper Lægsgaard

Affiliation

¹ DTU Fotonik, Department of Photonics Engineering, Technical University of Denmark, 2800 Kgs Lyngby, Denmark. malau@fotonik.dtu.dk

PMID: 21643339
DOI: 10.1364/OE.19.010824

Abstract

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 59μm. 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.

Publication types

Research Support, Non-U.S. Gov't