Title :
Photo-induced birefringence investigation of azo polymer with cyano substituted group
Author :
Marjan, E. Bagherzadeh Khajeh ; Kandjani, S. Ahmadi ; Zakerhamidi, M.S.
Author_Institution :
Res. Inst. for Appl. Phys. & Astron., Univ. of Tabriz, Tabriz, Iran
Abstract :
Light-induced behavior of polymethacrylate with side chain mesogenic groups of cyano azobenzene was investigated. The intensity of absorption peaks increase when the polymer film was illuminated by pump beam. The birefringence induced by high powers of linearly polarized light shows extraordinary behavior. When the polymer film was kept in the dark, a long-term stability was revealed. The birefringence can be induced by illumination of circularly polarized light. OPM photographs show liquid crystalline behavior of polymer.
Keywords :
birefringence; liquid crystal polymers; optical microscopy; optical polymers; optical pumping; polymer films; spectral line intensity; visible spectra; OPM photographs; absorption intensity; azo polymer; circularly polarized light; cyano azobenzene; cyano substituted group; illumination; light-induced behavior; linearly polarized light; liquid crystalline polymer; long-term stability; optical polarization microscope; photoinduced birefringence; polymer film; polymethacrylate; pump beam; side chain mesogenic groups; Laser beams; Laser excitation; Lighting; Measurement by laser beam; Optical films; Polymer films; Polymers;
Conference_Titel :
Advanced Optoelectronics and Lasers (CAOL), 2013 International Conference on
Conference_Location :
Sudak
Print_ISBN :
978-1-4799-0016-9
DOI :
10.1109/CAOL.2013.6657658
