Resonance CARS line shape analysis for a concentration series of a dye solution—a practicable method for the evaluation of third-order susceptibilities
✍ Scribed by M. Pfeiffer; A. Lau; W. Werncke
- Publisher
- John Wiley and Sons
- Year
- 1986
- Tongue
- English
- Weight
- 430 KB
- Volume
- 17
- Category
- Article
- ISSN
- 0377-0486
No coin nor oath required. For personal study only.
✦ Synopsis
An extension of the Fleming and Johnson procedure is presented for determining the molecular third-order susceptibility parameters from three characteristic intensities within a CARS line profile ( I,,,, I,,+, &,id)+ For CARS excitation close to a molecular one-photon resonance, these three intensity values taken from one spectrum do not suffice for the determination of all relevant parameters. A simple procedure is given for overcoming this by combining the information from all the spectra within a concentration series, keeping the frequency of the CARS pump laser fixed. Uncertainty in the measured Imid value is overcome by applying a least-squares fit of the spectra.
Results obtained from resonance CARS measurements for Rhodamine 6G in ethanol are given.