title: Three-beam phase-modulation technique for coherent Raman spectroscopy.
abstract: A new nonlinear optical technique is applied to coherent Raman spectroscopy of gases. Two orthogonal pump beams with relative phase modulation are generated in an electro-optic modulator and mixed with a linearly polarized probe. Shot-noise-limited detection and signals linear in either real or imaginary parts of the third-order susceptibility are demonstrated for NO and N(2).
authors.forename: G J
authors.initials: GJ
authors.lastname: Rosasco
authors.forename: W S
authors.initials: WS
authors.lastname: Hurst
authors.forename: W
authors.initials: W
authors.lastname: Lempert