Mapping optical standing-waves of an open-access Fabry–Perot cavity with a tapered fiber
Résumé
We describe a method to map the standing-wave pattern inside an open-access Fabry–Perot optical cavity with sub-wavelength resolution by perturbing it with a commercially available tapered fiber. The method is applied to a fiber Fabry–Perot microcavity. We demonstrate its use in determining the relative position of the antinodes at two different wavelengths. In addition, we use the tapered optical fiber as a point-like source, allowing precise positioning of a microscope objective with respect to the cavity mode.
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