Investigation of multiple holographic recording in azo-dye-doped nematic liquid-crystal film.
We report multiple holographic recording and optical address recognition schemes in Methyl Red-doped liquid-crystal film without an applied electric field. Ten gratings are recorded at a single location of a 5 mm2 area by using optical multiplexing methods, and the diffraction efficiencies are studied for multiplexed gratings. Diffraction behavior of angular and peristrophic multiplexed gratings is discussed, and two methods that involve recording angles and peristrophic rotation angles are presented for optical recognition.
Gao
Hongyue
H
State Key Laboratory for Advanced Photonic Materials and Devices, Department of Optical Science and Engineering, Fudan University, Shanghai 200433, China. gaohongyuehit@sohu.com
Liu
Jianhua
J
Gan
Fuxi
F
Ma
Bo
B