Optically Induced High Efficiency Gratings in Azo Polymer Films
QUEEN'S UNIV KINGSTON (ONTARIO) DEPT OF CHEMISTRY
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Going beyond the usual orientation of azobenzene groups within amorphous polymers, an increased amount of incident light may produce physical gratings of the order of magnitude of the wavelength. The diffraction efficiency of such gratings can reach 28 or even more. The surface profile of the grating can be observed with an atomic force microscope. Such gratings can be used to couple beams optically into the film and out of the film, as well as for waveguides. Diffraction gratings, Efficiency, Azo polymers.
- Organic Chemistry
- Polymer Chemistry