Anisotropic photoluminescence from Er-TeO2 thin films photonic crystals for on-chip NIR light source
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Er3+-TeO2 thin film photonics crystals (PhCs) demonstrates anisotropic photoluminescence (PL) emission. By tuning the PhC periodicity, surface extraction mode or waveguide propagation mode can be selected which provides flexible on-chip light source. 2012 OSA.