Resonance Raman measurements utilizing a deep UV source

摘要: Raman scattering techniques have long been used as unique identifiers for spectral fingerprints of chemical and biological species. lidar has utilized on a routine basis to remotely measure several constituents in the atmosphere. While is very reliable uniquely identifying molecules, it suffers from small scattering cross sections that diminish its usefulness at increased ranges and decreased concentrations the species of interest. By utilizing resonance technique, where laser excitation tuned near an electronic absorption band, possible increase section. An optical parametric oscillator (OPO) with UV tuning range ~220 nm - 355 explore wavelength dependence for diamond, water, benzene, toluene. Resonance enhancements spectra studied.