High energy single transverse mode Q-switched fiber laser based on multi-mode large mode area erbium doped fiber

High energy single transverse mode Q-switched fiber laser based on multi-mode large mode area erbium doped fiber

We demonstrate that appropriately designed doped multi-mode fibers provide robust single mode output when used within a fiber laser cavity. Using a novel large mode area fiber we demonstrate record single mode (M2 < 1.2) pulse energies of > 0.5mJ from a Q-switched fiber laser and even higher p...

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Bibliographic Details
Main Authors: Offerhaus, H.L (Author), Broderick, N.G.R (Author), Richardson, D.J (Author), Sammut, R.A (Author), Caplen, J. (Author), Dong, L. (Author)
Format: Article
Language:English
Published: 1998.
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Summary:We demonstrate that appropriately designed doped multi-mode fibers provide robust single mode output when used within a fiber laser cavity. Using a novel large mode area fiber we demonstrate record single mode (M2 < 1.2) pulse energies of > 0.5mJ from a Q-switched fiber laser and even higher pulse energies (as high as 0.85mJ) with slightly compromised spatial mode quality (M2 < 2.0). The approach offers significant scope for extending the range of single mode output powers and energies achievable from fiber laser/amplifier systems.

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