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Article Dans Une Revue Measurement Science and Technology Année : 2020

Gouy phase shift measurement in a high-finesse cavity by optical feedback frequency locking

Résumé

We demonstrate a simple and robust scheme to measure the relative position of transverse cavity modes with high precision. This is based on robust optical-feedback frequency locking of a diode laser to a cavity resonance. A fraction of the laser power is then frequency shifted and used to re-inject other cavity resonances to obtain their positions relative to the locking resonance. This delivers the Gouy phase shift of the cavity modes with precision down to 6.4 × 10 −8 rad, comparable to previous state of the art based on a more complex setup. This should also be of interest for high precision/accuracy measurement of distance and displacement.
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Dates et versions

hal-02935349 , version 1 (12-11-2020)

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Léo Djevahirdjian, Guillaume Méjean, Daniele Romanini. Gouy phase shift measurement in a high-finesse cavity by optical feedback frequency locking. Measurement Science and Technology, 2020, 31 (3), pp.035013. ⟨10.1088/1361-6501/ab501b⟩. ⟨hal-02935349⟩

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