Abstract
We consider in this work a high resolution, Doppler-free, one-photon, optical absorption differential spectroscopy of a mixture of two different mutually interacting gases or vapors in order to display the effects of this interaction directly in the optical spectra. Those interactions are restricted to binary collisions and they are treated in the so-called impact approximation (hard collisions). Usually, the high resolution, Doppler-free optical spectra are observed when two counterpropagating laser beams pass through the gas cell. One beam is strong enough to saturate the optical transition to several different degrees. The other beam is a weak probe absorbed by the saturated atomic or molecular pair of energy levels (a two-energy level system with angular frequency ω0). The laser beams are supposed to have different angular frequencies and to be linearly polarized. In order to achieve the Doppler-free differential optical absorption one-photon spectra, a convenient geometrical experimental set up is proposed.
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More From: Zeitschrift f�r Physik D Atoms, Molecules and Clusters
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