Dual-Pump CARS Measurements in Counter-Flow Flames using OPO

Dual-Pump CARS Measurements in Counter-Flow Flames using OPO

Application of Dual-Pump Coherent Anti-Stokes Raman Scattering technique in counter-flow flames using injection-seeded optical parametric pump source

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A new laser system has been developed to measure temperature and major species concentrations using dual-pump N2-CO2 coherent anti-Stokes Raman scattering (CARS). The second harmonic output from an injection-seeded Nd:YAG laser was used as one of the narrowband pump beams.The second narrowband pump beam was generated from an optical parametric oscillator injection-seeded at the idler wavelength using an external cavity diode laser.A broadband dye laser produced the Stokes beam. The three beams were focused between two opposing nozzles of a counter-flow burner facility to measure temperature an...