Sub-kHz linewidth VECSEL for cold atoms experiments

Moriya, P. H. and Hastie, J.E.; (2018) Sub-kHz linewidth VECSEL for cold atoms experiments. In: Advanced Solid State Lasers 2018. Optical Society of America, USA. ISBN 978-1-943580-48-4 (

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We report sub-kHz linewidth operation of a frequency-stabilized, AlGaInP-based vertical-external-cavity surface-emitting laser (VECSEL) at 689nm, suitable for Strontium cold atom experiments. 170mW was emitted with linewidth ≤200Hz, determined via an optical beat note measurement.