Study on optical storage and modulation properties of azobenzene organic films

The Optical storage and modulation properties of azobenzene conductive organic films were studied by use of photo-induced birefringence. The experimental results indicate that, the azobenzene side-chain polymers possess more excellent optical storage properties, however, the azobenzene doped polymers are the proper candidates for optical modulation. A new polarized-light-controlled holographic recording based on the optical enhancement/restraint of self-diffraction has been demonstrated in azobenzene doped polymer film. It is found that a continuous variation of the polarization status of the pumping light results in a continuous variation of self-diffraction efficiency with a range of 0^°-90^°.