title: Red-green-blue laser emissions from dye-doped poly(vinyl alcohol) films.
abstract: A microscope slide acting as a passive waveguide was coated by three separate poly(vinyl alcohol) films that were doped with Coumarin 460, Disodium Fluorescein, and Rhodamine 640 perchlorate. On collinear pumping by a nitrogen laser, these dyes furnished primary red-green-blue laser emissions that were collected and waveguided by the microscope slide but exited from both ends. Frosting the waveguide exit introduced light scattering at the glass-air interface and spatially overlaid the red-green-blue laser emissions that emerged as a uniform white-light beam.
authors.affiliation: Institute of Postgraduate Studies, University of Malaya, Kuala Lumpur 50603, Malaysia.
authors.forename: Seong-Shan
authors.initials: SS
authors.lastname: Yap
authors.forename: Wee-Ong
authors.initials: WO
authors.lastname: Siew
authors.forename: Teck-Yong
authors.initials: TY
authors.lastname: Tou
authors.forename: Seik-Weng
authors.initials: SW
authors.lastname: Ng