B Gokbulut, M N Inci, Enhancement of the spontaneous emission rate of Rhodamine 6G molecules coupled into transverse Anderson localized modes in a wedge-type optical waveguide, Optics Express 27(11) 15996 (2019)
(a) SEM image of the cross-sectional area of three different wedge-waveguides. (b) The fluorescence microscopy image of the cross-sectional area of three waveguides.
Transverse Anderson localization scheme: A pump beam entering the disordered medium, which is random in the two transverse dimensions (xy-plane) but is considered to be almost invariant in the propagation direction (z)
(a) 2D and (b) 3D fluorescence intensity distributions of the excited dye molecules in the wedge-waveguide 1
(a) Fluorescence lifetime decay curves of the Rhodamine 6G dye molecules coupled into transverse Anderson localized mode 1, mode 2, and mode 3 in wedge-waveguide 1 and in bulk polymer medium; PL spectrum of the dye molecules coupled into (b) mode 1, (c) mode 2, and (d) mode 3.