ISSN:
0377-0486
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
Generalized phase matching conditions for the four-wave mixing process of coherent anti-Stokes Raman scattering (CARS) is examined. The use of three incident laser beams leads to better spectral and angular separation of the CARS signal than is possible in standard two beam CARS experiments. Furthermore, large background reduction is shown possible through the use of three frequencies. Special attention is paid to the universal phase matching geometry where two of the laser beams counterpropagate (COPCARS). Experimental results obtained with the COPCARS are presented. The technique is especially useful for studying small frequency shifts such as those associated with rotational Raman, Brillouin and Rayleigh wing scatterings.
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/jrs.1250100118
Permalink
