Loss characterization in rhodamine 6G doped polymer film waveguide by side illumination fluorescence

Abstract

We report the position dependent tuning of fluorescence emission from rhodamine 6G doped polymethylmethacrylate film waveguide using a side illumination technique. The transmitted fluorescence as a function of the distance from the point of illumination is measured by translating the waveguide horizontally across a monochromatic light source. This technique has been utilized to characterize the optical loss in dye doped waveguides. We observe that the optical loss coefficients for shorter and longer distances of propagation through the dye doped waveguide are different. At longer distance of propagation a decrease in optical loss coefficient is observed.

Thirty Years of Luminescent Solar Concentrator Research: Solar Energy for the Built Environment

“…These re-absorptions are not necessarily a loss themselves, but become a loss if the reabsorbing fluorophore does not again emit a photon (due to nonradiative relaxation pathways) or if it does emit, but in a direction within the escape cone of the waveguide. [33,[81][82][83][84] One manner in which the problem of re-absorption events has been approached is in the design of new luminophores with larger Stokes shifts. By reducing the overlap in the absorption and emission spectra of the luminophores, the re-absorption losses are minimized.…”

A fast and effective procedure for the optical efficiency determination of luminescent solar concentrators

“…Moreover, the laboratory research in LSC technology should be aimed at the optimization of the single parameters which affect the overall LSC performances, so that they can be optimized and implemented together in a functional and less expensive system (Desmet et al, 2012;Geetha et al, 2004;Earp et al, 2011).…”

Fabrication and characterization of dye-doped polymer optical fiber as a light amplifier

“…[10][11][12][13][14][15] The range of tun· ability of laser dyes such as Rhodamine B and Ri» damine 6G usually lies between 570 and 640 nm. Tbe advantage of incorporating laser dyes in solid matrices such as POF is that it is easier and safer to handle them than when they are in liquid form.…”