Optically switchable gratings based on azo-dye-doped, polymer-dispersed liquid crystals.
We report a holographically fabricated, optically switchable grating using azo-dye-doped, polymer-dispersed liquid crystals (LCs). Our experiments show that upon photoirradiation, the diffraction of the grating was decreased significantly. We believe that this switching behavior is due to two factors--nematic-isotropic phase transition of LCs and thermal expansion of the grating structure.
Liu
Yan Jun
YJ
Department of Engineering Science, The Pennsylvania State University, University Park, Pennsylvania 16802, USA.
Zheng
Yue Bing
YB
Shi
Jinjie
J
Huang
Hua
H
Walker
Thomas R
TR
Huang
Tony Jun
TJ