Abstract
We have studied a new heterogeneous liquid-crystalline material where H-bonded polymer–azo-dye complexes are used as dopants to the liquid crystal (LC) bulk at a very low concentration. Double enhancement of the holographic gratings’ diffraction efficiency occurred in the complex-doped LC compared to dye-doped LC. The grating formation/relaxation processes in complex-doped LC showed anomalies that were explained by the presence of polymer with H bonds. The gratings appeared to be formed due to a change of both the absorption coefficient and refractive index. Using such complexes as dopants gives perspectives for tuning and control of the LC properties, and for possible optical applications.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
