Dispersion filter for spectral and spatial resolution of pure rotational Raman scattering. Academic Article uri icon


  • A new filtering technique for Raman spectroscopy utilizes atomic vapor to suppress strong elastic and Rayleigh scattering while simultaneously resolving individual rotational Raman lines. Filtered images capture high-resolution spectral information in one dimension and spatial resolution in the other dimension. The filter is based on resonance enhanced dispersion, where the index of refraction varies dramatically. In a simple prism geometry the vapor disperses incident radiation according to frequency. A mercury-vapor-based dispersion filter has been fabricated, modeled, and demonstrated to capture pure rotational Raman scattering from CO(2).

published proceedings

  • Opt Lett

author list (cited authors)

  • Finkelstein, N. D., Yalin, A. P., Lempert, W. R., & Miles, R. B.

citation count

  • 17

complete list of authors

  • Finkelstein, ND||Yalin, AP||Lempert, WR||Miles, RB

publication date

  • October 1998