ISSN:
0377-0486
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
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 (Imax, Imin, Imid). 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.
Additional Material:
4 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/jrs.1250170508
