Abstract
Polarization-CARS (coherent anti-Stokes Raman scattering) system was developed in order to eliminate non-resonant back ground noise, and in order to enhance characteristics of CARS such as high sensitivity, non-intrusiveness, and chemically specific measurement. Two experiments were performed for comparison between CARS and polarization-CARS. The relationships between intensity of scattering light and concentration of Na_2SO_4 solution were obtained and solution mixing field was measured. Polarization-CARS reduced the errors observed in the case of the experiments using CARS at the same conditions. As a result, it was observed that polarization-CARS has an ability to eliminate non-resonant back ground noise.
