Simultaneous observation of rotational coherent Stokes Raman scattering and coherent anti-Stokes Raman scattering in air and nitrogen

Abstract
We report the first simultaneous observation to our knowledge of pure rotational coherent Stokes Raman scattering (CSRS) and coherent anti-Stokes Raman scattering (CARS) using broadband generation and detection. Three-dimensional small-angle phase-matching conditions for CSRS and CARS processes are discussed.