Spectroscopy within the Doppler line with the aid of a ring laser
Belenov E.M., Danileiko M.V., Kozubovskii V.R., Nedavnii A.P., Shpak M.T.
We indicate the possibility of laser spectroscopy within the Doppler contour, without using directly the effect of Lamb hole burning of the Doppler line. We show that a ring laser is a more sensitive spectroscope than a laser with a Fabry-Perot resonator.