Laser And Spectroscopic Characterization Of Thin Films

Renata Reisfelda; Valery Chernyak; Marek Eyal; Amotz Weitz

doi:10.1117/12.949937

6 March 1989 Laser And Spectroscopic Characterization Of Thin Films

Renata Reisfelda, Valery Chernyak, Marek Eyal, Amotz Weitz

Proceedings Volume 1016, Optical Materials Technology for Energy Efficiency and Solar Energy Conversion VII; (1989) https://doi.org/10.1117/12.949937
Event: 1988 International Congress on Optical Science and Engineering, 1988, Hamburg, Germany

Abstract

Transparent glass or polymer films doped by luminescent species are new promising materials for luminescent solar concentrat-ors, wave guides, two dimensional lasers and nonlinear materials. Polymethylmethacrylate (PMMA) and Polyvinylacetate (PVA) films containing Rhodamine 6G (Rh6G) and glass films containing Rh6G and/or inorganic ions were prepared. Chemical and spectroscopic properties of the doped films were determined by means of absorption and polarized emission spectroscopy and lifetimes of the dopants. Thicknesses of the films were determined by laser interferometry and absorption spectroscopy in the visible and infrared. Simultaneously absorption spectra of the dyes uniformly dispersed in the film in a monomeric form were measured and the film thickness and homogeneity determined from the molar extinction coefficient of the dye. The films may be prepared with controlled and predetermined thickness. The nonlinear properties of the doped films may be enhanced during their formation by orienting the dopants either in an electric field or by stretching the films uni-axially. Fluorescence depolarization allows energy transfer measurements.

Citation Download Citation

Renata Reisfelda, Valery Chernyak, Marek Eyal, and Amotz Weitz "Laser And Spectroscopic Characterization Of Thin Films", Proc. SPIE 1016, Optical Materials Technology for Energy Efficiency and Solar Energy Conversion VII, (6 March 1989); https://doi.org/10.1117/12.949937

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