Femtosecond resonance enhanced CARS for background-free detection of organic molecules

Aleksander Rebane *, Mikhail Drobizhev, Mikalai Kruk, Aliaksandr Karotki, Imbi Tehver, Marlan Scully
2005 Journal of Modern Optics  
We study the coherent excitation profile (CEP) of resonance enhanced femtosecond CARS in a model system zinc phthalocyanine in a polymer film host as a prospective technique for detection and identification of molecular species in ambient environments. A new method of suppressing the non-resonant FWM background is demonstrated. Transform theory is applied to calculate CEP based on the absorption spectrum, and good agreement between theory and experiment is obtained.
doi:10.1080/09500340512331329091 fatcat:khgyqtgsrbdivgum3ey7gn4ara