High-resolution spectroscopy with and frequency stabilization of a cw dye laser

Wulfhard K. Lange, J. Luther, B. Nottbeck +1 more

J. Dirscherl, B. Neizert, T. Wegener +1 more

Jeffrey A. Paisner

김중복, Jung-Bog Kim

P. F. Liao, John E. Bjorkholm

We report direct observation of optically induced shifts of atomic energy levels in sodium vapor that occur in two-photon absorption. These shifts must be considered in high-resolution two-photon spectroscopy. Two cw dye laser beams of different frequencies and propagating in opposite directions are utilized to obtain high-resolution spectra. The intensity and frequency dependence of the level shifts are examined.

Theodor W. Hänsch, Kenneth C. Harvey, G. Meisel +1 more