The third-order nonlinear optical properties of novel styryl dyes

Seetharam Shettigar, G. Umesh, P. Poornesh, K. B. Manjunatha, Abdullah Mohammed Asiri

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)


The third-order nonlinear optical properties of two novel styryl dyes, namely, 1,3-diethyl-5-(4-methoxybenzylidene)-2-thioxodihydropyrimidine-4,6(1H,5H)-dione and 5-(3,4-dimethoxybenzylidene)-1,3-diethyl-2-thioxodihydropyrimidine-4,6(1H,5H)-dione were studied using the Z-scan technique employing 7 ns laser pulses at 532 nm. The nonlinear refractive index, nonlinear absorption coefficient, magnitude of effective third-order susceptibility and coupling factor were determined. The optical power limiting behavior of the colorants was ascribed to two-photon absorption phenomenon. Nonlinear absorption cross-section increased with increase in π electron density and the effective two-photon absorption cross-section was two orders of magnitude larger than those of commercially available azo compounds. The results suggest that these colorants offer promise as nonlinear optical materials for device applications.

Original languageEnglish
Pages (from-to)207-210
Number of pages4
JournalDyes and Pigments
Issue number2
Publication statusPublished - 01-11-2009

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Process Chemistry and Technology


Dive into the research topics of 'The third-order nonlinear optical properties of novel styryl dyes'. Together they form a unique fingerprint.

Cite this