A new type of organic donor-π-acceptor compounds with third-order nonlinear optical properties
Abstract
Ten new organic donor-π-acceptor compounds were synthesized and characterized by UV, IR, 1H NMR and elemental analysis. Off-resonant third-order nonlinear optical properties of the compounds were measured using femtosecond laser and degenerate four-wave mixing technique. The third-order nonlinear optical susceptibilities χ(3) were 3.50-4.29 × 10 -13 esu. The nonlinear refractive indexes n2 were 6.42-7.89 × 10 -12 esu. The second-order hyperpolarizabilities γ of the molecules were 3.63-4.47 × 10 -31 esu. The response times were 69-112 fs. The results show that these compounds have potential nonlinear optical applications.
- Publication:
-
Optical Materials
- Pub Date:
- June 2009
- DOI:
- 10.1016/j.optmat.2008.12.003
- Bibcode:
- 2009OptMa..31.1128C