Coherent anti‐Stokes Raman spectroscopy (CARS): Improved experimental design and observation of new higher‐order processes

摘要: The development of the optical and electronic arrangement which has permitted straightforward measurement coherent anti‐Stokes Raman spectra (CARS) higher‐order processes not previously reported is described in this paper. CARS spectrum a dilute solution diphenyloctatetraene benzene presented. This demonstrates significantly greater signal‐to‐noise ratio possible with as compared to conventional techniques. Higher‐order spectral excitation studies (HORSES) are indicate presence six‐wave or second‐order four‐wave mixing process.