Rare-earth-doped silica-based glasses for photonic applications

Potential and limitations of rare-earth luminescence in inverse opals

“…While numerous authors have reported on organic dyes in photonic crystals, the literature reveals only very few investigations on rare earths. In these few, mostly spectral intensity redistributions between Stark components in the rareearth emission spectra, if they coincide with the photonic band gap [2][3][4][5][6][7][8], are described; a recent publication also analyses the angular dependence of Eu 3+ emissions on incorporation into an inverse MgSiO 3 opal [9]. Other than previous work on emissive properties, the question pursued by us focusses on possible absorption enhancements.…”