Observation of mode-mixing in the eigenmodes of an optical microcavity

Corné Koks; Martin P. van Exter

doi:10.1117/12.2621447

24 May 2022 Observation of mode-mixing in the eigenmodes of an optical microcavity

Corné Koks, Martin P. van Exter

Proceedings Volume PC12131, Nanophotonics IX; PC121311F (2022) https://doi.org/10.1117/12.2621447
Event: SPIE Photonics Europe, 2022, Strasbourg, France

Conference Poster

Abstract

We present a method to determine the complex coupling parameter of a two-coupled-modes system by directly measuring the coupled eigenmodes rather than their eigenvalues. This method is useful because mode-mixing can be observed even if frequency shifts can not be measured. It also allows to determine the complex coupling parameter, from which we conclude that the observed coupling is mainly conservative. We observe mode-mixing in an optical microcavity, where the modes couple primarily at the mirror surface, as confirmed by AFM measurements. The presented method is general and can be applied to other systems to measure mode coupling more accurately and to determine the nature of the coupling.

Citation Download Citation

Corné Koks and Martin P. van Exter "Observation of mode-mixing in the eigenmodes of an optical microcavity", Proc. SPIE PC12131, Nanophotonics IX, PC121311F (24 May 2022); https://doi.org/10.1117/12.2621447

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