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              Continuous-wave terahertz spectrometerThe continuous-wave terahertz spectrometer makes use of two near-infrared lasers. The first laser is a fixed-frequency cw ring Ti:Saph laser operating near 840
  Nonlinear Optical SpectroscopyVibrationally-Resonant Sum Frequency Spectroscopy (VR-SFS): A nonlinear vibrational spectroscopy in which two colors of light, one in the visible and one in the
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