Stimulated Raman gain (SRG) spectroscopy using infrared pump pulses with narrow linewidth and a low-noise cw probe infrared laser was proposed. High-resolution Raman spectra of solutions were obtained. The SRG spectra of crystal GaP, benzene, and toluene were measured to confirm the spectral resolution and sensitivity over the terahertz (THz) region. We discuss the polarization dependence of the spectral measurement of carbon tetrachloride. Our system can detect organic molecules in aqueous solutions.
|Number of pages||12|
|Journal||International Journal of Infrared and Millimeter Waves|
|Publication status||Published - 2005 Jun|
- Low-noise cw probe infrared laser
- Stimulated Raman gain spectroscopy
- Terahertz vibrations