Light-induced director reorientation in dye-doped nematic liquid crystals was recently reported to be an efficient method of writing permanent holographic gratings with high sensitivity [Phys. Rev. Lett. 82, 1855 (1999)]. We report the achievement of stable director reorientation in the same materials by means of a single 4-ns pulse of the second harmonic of a Nd:YAG laser. Fast recording of high-resolution holographic gratings (more than 500 lines/mm) can be obtained with an energy density as low as 7×10-3J /cm2 .
© 1999 Optical Society of America
[Optical Society of America ]
L. Lucchetti, F. Simoni, and Y. Reznikov, "Fast optical recording in dye-doped liquid crystals," Opt. Lett. 24, 1062-1064 (1999)