Abstract

Two types of two-photon transitions are detected optically in a mixed alkali vapor of Na and K. Using a cw narrowband dye laser tunable from 5700 to 5850 Å, two-photon transitions free of Doppler broadening in NaK have been observed, while five Doppler-limited transitions have also been detected. The latter signals are due to two-photon hybrid resonances involving the photolysis of K₂ and a subsequent transition in the excited K atom.

© 1986 Optical Society of America

Observation and relaxation of the two-photon-excited trilevel echo in sodium vapor

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