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Using an original optical process, we are able to photoinduce a surface relief grating (SRG) whose wave-vector direction depends on the light polarization only. The material used in this report is an efficient photoactive azo-polymer derivative. Thickness of the polymer films is around 1 /spl mu/m, with absorbance equal to 1.6 at /spl lambda/=476.5 nm-working wavelength. SRG are produced in a one step irradiation process in standard laboratory conditions. Typical laser beam intensity is 450 mW/cm/sup 2/. We characterize the photoinduced SRG by diffraction studies and atomic force microscopy (AFM).

Multistate polarization addressing using one single beam in an azo polymer film