Polarization-independent photochromic diffraction in a dye-doped liquid crystal.
We report the observation of polarization-independent photochromic diffraction in an azo-dye-doped liquid crystal. The generation of the phase grating is more than 90% independent of the polarization of the writing beams, and the diffraction by the phase grating is more than 90% independent of the polarization of the probe beam. Unpolarized lamp light was also used to generate real-time phase gratings and self-diffraction. For the first time to our knowledge, photochromic phase modulation and light diffraction that exhibit more than 90% polarization independence for both writing and probe beams were produced in an anisotropic liquid-crystalline material.
Wang
Yong-Jing
YJ
Philips Components, 345 Scarborough Road, Briarcliff Manor, New York 10582, USA.
Pei
Manlin
M
Carlisle
Gene O
GO