Abstract
The influence of the conjugation length on the first hyperpolarizability of a series of five fluorescent hemicyanine homologues is studied by femtosecond hyper-Rayleigh scattering. A frequency-resolved detection scheme has been used to suppress the multi-photon fluorescence contributions to the HRS signal. The obtained fluorescence-free first hyperpolarizabilities are compared with theoretical values.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 353-358 |
| Number of pages | 6 |
| Journal | Molecular Crystals and Liquid Crystals Science and Technology Section B: Nonlinear Optics |
| Volume | 25 |
| Issue number | 1-4 |
| State | Published - 2000 |
| Externally published | Yes |
Keywords
- DAST homologues
- First hyperpolarizability
- HRS
ASJC Scopus subject areas
- Control and Systems Engineering
- Condensed Matter Physics