Fabrication of hybrid Fabry-Pérot microcavity using two-photon lithography for single-photon sources

Ortiz-Huerta, Felipe, Chen, Lifeng, Taverne, Mike, Hadden, John P., Johnson, Mack, Ho, Daniel and Rarity, John G. (2018) Fabrication of hybrid Fabry-Pérot microcavity using two-photon lithography for single-photon sources. Optics Express, 26 (25). pp. 33245-33252. ISSN 1094-4087

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Abstract

For an efficient single-photon source a high-count rate into a well-defined spectral and spatial mode is desirable. Here we have developed a hybrid planar Fabry-Pérot microcavity by using a two-photon polymerization process (2PP) where coupling between single-photon sources (diamond colour centres) and resonance modes is observed. The first step consists of using the 2PP process to build a polymer table structure around previously characterized nitrogen-vacancy (NV) centres on top of a distributed Bragg reflector (DBR) with a high reflectivity at the NV zero-phonon line (ZPL). Afterwards, the polymer structure is covered with a silver layer to create a weak (low Q) cavity where resonance fluorescence measurements from the NVs are shown to be in good agreement with analytical and Finite Difference Time Domain (FDTD) results.

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