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.
Domaines
Optique [physics.optics]
Origine : Fichiers produits par l'(les) auteur(s)