Holographic recording of visible-light spectra in thin AgCl-Ag waveguide films

Holographic recording of visible-light spectra is carried out in vacuum-dep osited thin AgCl-Ag films, serving as waveguide media. In the film, periodi c structures, consisting of periodically redistributed colloidal silver par ticles, are recorded as a result of the interference between a linearly pol arized incident beam and the TE-modes in the waveguide. The reconstructed s pectra appear normal to the film surface, reproducing the original colour a nd polarization characteristics of the recorded light. When the holographic spectra are recorded through a polarizer in conjunction with a birefringen t crystalline plate, the characteristic coloured band patterns appear on re construction which are similar to the patterns of polarized wave interferen ce in crystalline plates.