Optically addressable liquid-crystal spatial light modulators for recording hologram correctors in observational optical systems

This paper presents the results of the development or negative-type optical ly addressable liquid-crystal spatial light modulators that are promising f or recording dynamic hologram-correctors, with an amorphous hydrogenated si licon carbide photoconductor and a ferroelectric liquid crystal. The distor ted-helix-ferroelectric effect is used to record the hologram-corrector. Wh en diffraction gratings were recorded with a spatial carrier frequency of 3 0 mm(-1) and a reversibility of 300 Hz, the technical diffraction efficienc y was at least 20%. (C) 2001 The Optical Society of America.