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Presentations

    Fourier transform heterodyne spectroscopy: a simple novel technique with ultrahigh (150 mHz) resolution, at EICOLS '87 Conference (Åre, Sweden), Monday, June 1, 1987
    Light beating spectroscopy has been used from the early days of the laser to study light scattering. By detecting the beating signal between the scattered light and a 'local oscillator' field derived from the same laser, resolving powers of 10^14 have been achieved. The Fourier transform heterodyne spectroscopy presented here is simpler and more direct than the conventional heterodyne techniques using autocorrelators or spectrum analyzers.
    Light scattering from nonequilibrium liquid interfaces, at Tenth Symposium on Thermophysical Properties (Gaithersburg, MD), Wednesday, June 1, 1988
    The asymmetry of the two Brillouin peaks of light scattered from capillary waves on a water-nitrogen interface subject to a temperature gradient has been observed using a Fourier transform heterodyne technique. The local oscillator is frequency-shifted by a few kHz to separate the Stokes and anti-Stokes components. Although the sign and the order of magnitude of the effect agree with linear theory, the magnitude of the experimental asymmetry is about one half of the one predicted by linear fluctuating hydrodynamics.

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