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Published on: January 28, 2019
Holographic injection locking of a broad area laser diode via a photorefractive thin-film device
P D van Voorst1, M R de Wit, H L Offerhaus
1Department of Physics, Twente University, Enschede, The Netherlands. p.d.vanvoorst@utwente.nl
Abstract:
We demonstrate locking of a high power broad area laser diode to a single frequency using holographic feedback from a photorefractive polymer thin-film device for the first time. A four-wave mixing setup is used to generate feedback for the broad area diode at the wavelength of the single frequency source (Ti:Sapphire laser) while the spatial distribution adapts to the preferred profile of the broad area diode. The result is an injection-locked broad area diode emitting with a linewidth comparable to the Ti:Sapphire laser.
