Amplified spontaneous emission from dye-doped polymer film sandwiched by two opal photonic crystals

The authors observed amplified spontaneous emission (ASE) from dye-doped polymer film sandwiched by two opal photonic crystals (PhCs). The ASE effect occurred at 599 nm with a full width at half maximum of about 5.1 nm, which corresponds to the L-point gap edge of the opal PhCs. Photoluminescence lifetimes of both dye-doped polymer films with and without opal PhCs were measured and corroborated that the ASE of the dye-doped polymer film emission is due to the presence of the photonic stop band. (C) 2007 American Institute of Physics.