Title :
Optical properties of azo (EO) chromophore (DR1) doped in poly amic acid (PAM)
Author :
Hamedi, Samaneh ; Rashidi, Arman ; Dehdashti Jahromi, Hamed ; Gharavi, Alireza
Author_Institution :
Dept. of Electr. Eng., Shiraz Univ., Shiraz, Iran
Abstract :
In this work, we studied the effects of annealing on the structural and optical properties of an azo electro optic (EO) polymer, Disperse Red1 (DR1), doped in Poly Amic Acid (PAM). Thin films were deposited on glass substrates by spin coating technique. The films were annealed at 195°C. The Structural and optical properties of the doped films were investigated by using UV-VIS spectra, Atomic Force Microscopy (AFM) and Prism Coupling technique. The number of modes, angles of coupling, thickness and refractive index were compared before and after annealing. The experimental results, showed 24nm blue shift in the photon absorption peak and number of modes and surface roughness of thin films decreased after annealing. Thickness was reduced about 1um and refractive index was increased by 0.03.
Keywords :
annealing; atomic force microscopy; electro-optical effects; polymer films; polymer structure; refractive index; spectral line shift; spin coating; surface roughness; ultraviolet spectra; visible spectra; AFM; SiO2; UV-visible spectra; annealing; atomic force microscopy; azo electro-optic chromophore; azo electro-optic polymer; blue shift; coupling angles; disperse Red1; glass substrates; mode number; optical properties; photon absorption; poly amic acid; prism coupling technique; refractive index; spin coating; structural properties; surface roughness; temperature 195 degC; thin film thickness; Conferences; Decision support systems; Electrical engineering; Dr1; abroption; anneal; azo chromophore; optical; poly amic acid; waveguiding;
Conference_Titel :
Electrical Engineering (ICEE), 2015 23rd Iranian Conference on
Conference_Location :
Tehran
Print_ISBN :
978-1-4799-1971-0
DOI :
10.1109/IranianCEE.2015.7146414
