This paper describes a new technique to mitigate the effect of beam steering on CARS measurements in turbulent, variable density environments. The new approach combines Planar BOXCARS phase-matching with elliptical shaping of one of the beams to generate a signal insensitive to beam steering, while keeping the same spatial resolution. Numerical and experimental results are provided to demonstrate the effectiveness of this approach. One set of experiments investigated the effect of beam shaping in the presence of a controlled and well quantified displacement of the beams at the focal plane. Another set of experiments, more qualitative, proved the effectiveness of the technique in the presence of severe beam steering due to turbulence.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Beam Shaping for CARS Measurements in Turbulent Environments


    Contributors:

    Conference:

    48th AIAA Aerospace Sciences Meeting ; 2010 ; Orlando, FL, United States


    Publication date :

    2010-01-04


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English




    BEAM SHAPING FOR CARS MEASUREMENTS IN TURBULENT ENVIRONMENTS

    Magnotti, G. / Cutler, A. / Danehy, P. et al. | British Library Conference Proceedings | 2010


    Beam Shaping for CARS Measurements in Turbulent Environments

    Magnotti, Gaetano / Cutler, Andrew / Danehy, Paul | AIAA | 2010


    CARS system for turbulent flame measurements

    ANTCLIFF, R. R. / JARRETT, O. / ROGERS, R. C. | AIAA | 1985


    CARS system for turbulent flame measurements

    ANTCLIFF, R. / JARRETT, JR., O. / ROGERS, R. | AIAA | 1984


    CARS system for turbulent flame measurements

    Antcliff, R. R. / Jarrett, O., Jr. / Rogers, R. C. | NTRS | 1985