title: Enhanced energy transfer between Co-dopants Pyronin-Y and Thionine incorporated into modified polymethyl methacrylate with addition of ZnO nanoparticles.
abstract: Using a prism dye cell arrangement, the study investigated spectral energy transfer between co-dopants Pyronin-Y and Thionine incorporated into ethanol-modified polymethyl methacrylate. The spectral parameters of the absorption and fluorescence spectra of the donor and acceptor dyes in the so designed solid-state dye laser were calculated theoretically. Fluorescence lasing properties and slope efficiency of the solid-state dye laser were investigated both with and without addition of ZnO nanoparticles. The dye pair generally improved lasing efficiency and tunability in the range from 582 to 689 nm.
authors.affiliation: Department of Physics, B.S. Abdur Rahman University, Chennai 600 048, India.
authors.forename: G V
authors.initials: GV
authors.lastname: Vijayaraghavan
authors.affiliation: Department of Physics, B.S. Abdur Rahman University, Chennai 600 048, India. Electronic address: basheerahamed@bsauniv.ac.in.
authors.forename: M
authors.initials: M
authors.lastname: Basheer Ahamed
keywords: PMMA; Solid state dye laser; Tunability