Full optical confinement in 1D Mesoscopic Photonic Crystal-based microcavities: A preliminary experimental demonstration

In this contribution we present the preliminary results of the experimental characterisation of Mesoscopic Photonic Crystal membrane-based microcavities. Thanks to the Mesoscopic Self-Collimation phenomenon, it is possible to achieve a full light confinement for non-paraxial excitation even in all positive-index, right-handed linear material based 1D Fabry-Pérot-like cavities having straight mirrors. The translational invariance offered by this geometry and the high Q factor make these cavities captivating for biochemical sensing, optical tweezing and nanoparticle manipulation.