Method for Longitudinally Stabilizing an Optical Cavity
The invention relates to a method for stabilizing, along the distance (L) between two mirrors (3, 4), an optical cavity (2), wherein said method comprises the steps of: injecting, into the cavity, an incident light beam in the form of a frequency comb; observing the spectrum of the light transmitted or reflected by the cavity using a photodiode (9) having at least two sensitive areas and arranged relative to the transmitted or reflected light such that, when the spectrum is centered, the two sensitive areas of the photodiode are also illuminated; modifying the distance (2) between the mirrors (3, 4) of the cavity (2) in order to cancel the offset of said spectrum relative to a situation in which said spectrum is centered.
PINEL OLIVIER [FR]; CHALOPIN BENOIT [FR]; TREPS NICOLAS [FR]
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