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arXiv · 1911.05134

Mapping standing-wave cavity modes with a commercial scanning near-field microscope tip

Francesco Ferri·Sébastien Garcia·Mohamed Baghdad·Jakob Reichel·Romain Long
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Abstract

We describe a method to map the standing-wave pattern inside a Fabry-Perot optical cavity with sub-wavelength resolution by perturbing it with a commercially available scanning near-field optical microscope (SNOM) tip. The method is applied to a fiber Fabry-Perot microcavity. We demonstrate its use to determine the relative position of the antinodes at two different wavelengths. In addition, we use the SNOM tip as a point-like source allowing precise positioning of a microscope objective with respect to the cavity mode.

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Francesco Ferri, Sébastien Garcia, Mohamed Baghdad, Jakob Reichel, Romain Long. 2019-11-12. Mapping standing-wave cavity modes with a commercial scanning near-field microscope tip. https://doi.org/10.1063/1.5142709

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