Holographic reflection gratings in dye-doped polymer materials

The interaction of two coherent counterpropagating circu!ar po!arized beams (helicoida! standing wave) with cellu!ose acetate polymer fi!m doped with Disperse Red 1 (DR1) azo-dye is studied. Polarization properties of the recorded grating are simi!ar to cholecteric liquid crystals where the response ofthe system is different to left and right circularly polarized light.