title: Coherent anti-Stokes Raman scattering in a high-finesse microcavity.
abstract: We report the measurement of degenerate coherent anti-Stokes Raman scattering (CARS) in a high-finesse optical microcavity, with an atmospheric gas as the nonlinear medium. Unlike the well-known bulk process in which index-dispersion compensation is required for phase-matching, efficient microcavity CARS involves a resonant coupling at the Stokes, pump, and anti-Stokes frequencies which can be described using coupled-mode analysis. We show how the interaction is thereby dramatically enhanced in a microscopic sample volume and illustrate the technique for the measurement of CO₂ in air.
authors.forename: Benjamin
authors.initials: B
authors.lastname: Petrak
authors.forename: Nicholas
authors.initials: N
authors.lastname: Djeu
authors.forename: Andreas
authors.initials: A
authors.lastname: Muller