Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7909040 | Optical Materials | 2015 | 9 Pages |
Abstract
Synthesis and measurements of third-order optical nonlinearity and optical limiting of conducting copolymers of aniline are presented. Single beam z-scan technique was employed for the nonlinear optical studies. Continuous wave He-Ne laser operating at 633 nm was used as the source of excitation. Copolymer samples exhibited reverse saturable absorption (RSA) process. The nonlinear refraction studies depict that the copolymers exhibit self-defocusing property. The estimated values of βeff, n2 and Ï(3) were found to be of the order of 10â2 cm/W, 10â5 esu and 10â7 esu respectively. Self-diffraction rings were observed due to refractive index change when exposed to the laser beam. A good optical limiting and clamping of power of â¼0.9 mW and â¼0.05 mW was observed. Therefore, copolymers of aniline emerge as a potential candidate for photonic device applications.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
S. Pramodini, P. Poornesh,