All-optical poling kinetics of azophenylcarbazoles influenced by attached anchor

Author

Getautis, J. ; Balcytis, A. ; Tomasiunas, R. ; Petruskevicius, R. ; Urnikaite, S. ; Getautis, V.

Author_Institution

Inst. of Appl. Res., Vilnius Univ., Vilnius, Lithuania

fYear

2015

Firstpage

1

Lastpage

4

Abstract

Second order non-linear optical features of anchor attached azophenylcarbazole based derivative 9-(2,3-epoxy)propyl-2-(2,3-epoxy)propoxy-3-(4-nitrophenyl)azo-9H-carbazole dispersed in polycarbonate was investigated. Using all-optical poling technique writing and reading kinetics of second order susceptibility gratings were measured. Theoretical modelling of the experimental results revealed one cis-trans thermoisomerization rates k₁= 1.44×10^-3 s^-1, which is twice or more times less than for the branched donors, depended on branching. Two arguments have been raised to explain the anchor influenced decrease in cis isomer flexibility. The investigated input of orientational diffusion confirmed the conclusion.

Keywords

dielectric polarisation; diffraction gratings; isomerisation; nonlinear optical susceptibility; 9-(2,3epoxy)propyl-2-(2,3-epoxy)propoxy-3-(4-nitrophenyl)azo-9H-carbazole; all-optical poling kinetic; anchor attached azophenylcarbazole; cis-trans thermoisomerization; isomer flexibility; polycarbonate; second order nonlinear optical feature; second order susceptibility grating; Glass; Integrated optics; Kinetic theory; Laser beams; Mathematical model; Measurement by laser beam; Nonlinear optics; all-optical poling; anchor; azophenylcarbazoles; thermo-isomerisation rate;

fLanguage

English

Publisher

ieee

Conference_Titel

Transparent Optical Networks (ICTON), 2015 17th International Conference on

Conference_Location

Budapest

Type

conf

DOI

10.1109/ICTON.2015.7193542

Filename

7193542