Two-photon induced polarization spectroscopy of xenon 7p[1/2]0.

ABSTRACT

A novel experimental setup for two-photon induced polarization spectroscopy of xenon using a single dye laser is demonstrated. The experimental setup for probing this two-photon xenon transition using this technique has been developed in the High Enthalpy Flow Diagnostics Group of the Institute of Space Systems. The characterization of the setup is achieved through a polarization lineshape modelling approach accounting for absorption, dispersion, and imperfections in the alignment of the analyzing polarizer for asymmetrical polarization profiles. It is demonstrated that the lineshape modelling approach yields consistent results for measurements with pronounced asymmetrical lineshape properties as well as for those with symmetrical lineshapes. For the first time, data on pressure broadening and pressure dependent redshift of the absorption center wavelength of xenon 7p[1/2]0 is presented. The results show a pressure broadening of 1.475 pm/bar full width at half maximum and a redshift of 0.8425 pm/bar.