Microphotoluminescence and second-harmonic microscopy were used to study is
lands formed inside phosphate and fluorophosphate optical glasses with full
erene dopants. Scanning microphotoluminescence and second-harmonic microsco
py indicated that fullerene dopants an subjected to strong influence from t
he glass matrix, which causes distortion of molecular symmetry, enhancement
of fluorescence, and occurrence of noncentrosymmetry required by the macro
scopic second-order optical nonlinearity.