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Interferometric, modulation-free laser stabilization

Robins, Nicholas; Slagmolen, Bram; Shaddock, Daniel; Close, John; Gray, Malcolm


We demonstrate novel modulation-free frequency locking of a diode laser, utilizing a simple Sagnac interferometer to create an error signal from saturated-absorption spectroscopy. The interference condition at the output of the Sagnac is strongly affected by the sharp dispersion feature near an atomic resonance. Slight misalignment of the interferometer and subsequent spatially selective, or tilt, detection allows this phase change to be converted into an error signal. Tilt locking has...[Show more]

CollectionsANU Research Publications
Date published: 2002
Type: Journal article
Source: Optics Letters


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