Three-dimensional photonic confinement in imprinted liquid crystalline pillar microcavities
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We demonstrate the feasibility of a thermal imprint technology capable of structuring organic thin films with liquid crystalline properties forming feature sizes on a several micrometer scale. The imprint technique can directly be applied onto a variety of substrates including dielectric mirrors. The so fabricated three-dimensional microcavities have lateral extensions up to 20 µm and heights between 1 and 5 µm. Exemplarily, pillar microcavities were produced wherein three-dimensional photonic confinement is observed by the formation of 0D cavity mode patterns. The imprint technique further favors the formation of hemispherical pillar geometries rather than cylindrical pillars resulting in equidistant mode spacings of transversal cavity modes.
Dusel , M , Betzold , S , Brodbeck , S , Herbst , S , Würthner , F , Friedrich , D , Hecht , B , Höfling , S & Dietrich , C P 2017 , ' Three-dimensional photonic confinement in imprinted liquid crystalline pillar microcavities ' Applied Physics Letters , vol 110 , no. 20 , 201113 . DOI: 10.1063/1.4983565
Applied Physics Letters
© 2017 the Author(s). This work has been made available online in accordance with the publisher’s policies. This is the author created accepted version manuscript following peer review and as such may differ slightly from the final published version. The final published version of this work is available at aip.scitation.org / https://doi.org/10.1063/1.4983565
Sv.H. acknowledges financial support by the EPSRC ”Hybrid Polaritonics” Grant (EP/M025330/1). F.W. thanks the Deutsche Forschungsgemeinschaft (DFG) for financial support (WU317/18-1).
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