Large mode area fibers for high power applications

Large mode area fibers for high power applications

We review our recent work toward designing large mode area fibers for high power applications. We show that appropriately designed doped multi-mode fibers can be used to provide robust single-mode output when used in fiber laser cavities. Single-mode (SM) fiber mode field diameters of ~35µm are demo...

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Bibliographic Details
Main Authors: Broderick, N.G.R (Author), Offerhaus, H.L (Author), Richardson, D.J (Author), Sammut, R.A (Author), Caplen, J. (Author), Dong, L. (Author)
Format: Article
Language:English
Published: 1999-04.
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Summary:We review our recent work toward designing large mode area fibers for high power applications. We show that appropriately designed doped multi-mode fibers can be used to provide robust single-mode output when used in fiber laser cavities. Single-mode (SM) fiber mode field diameters of ~35µm are demonstrated with record SM pulse energies of 0.5mJ at 1550nm with a repetition rate of 200Hz. Energies approaching 1mJ are obtained with a slight compromise in mode quality. A modification in the laser cavity results in a passively modelocked laser giving femtosecond pulses with nanojoule energies.

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