Nd:YAG fluorescence from high excited levels (A)

Monica L. Minden, Hans W. Bruesselbach

We report the detection of frequéncy-doubled Q-switched Nd:YAG laser radiation at 532.24 nm by an active rubidium atomic resonance filter. The Rb 5p level was populated by using a diode laser operating at 795 nm. The 532-nm laser excited atoms to the 10s level; these decay through p levels to the ground state. Signals were observed at 420/422 nm and 359 nm, corresponding to fluorescence from states 6p and 7p. Fluorescence noise was observed only on the 420/422-nm transition; the 359-nm signal had no detectable noise.

Voicu Lupei

Hugh R. Gray, Carlos R. Stroud

Chengfei Wang, Zhankui Jiang, Zhou Dafan +1 more

The natural radiative lifetime of some low-lying excited levels in Tm atoms have been determined from measurements of time-resolved laser-induced fluorescence in atomic beam. The levels were selectively populated by the light from a pulsed tunable dye laser pumped by an excimer laser or a Nd:YAG laser.

Frank Schlawin

Changhwan Lim, U. Izawa

In order to study autoionizing states of zirconium, we performed three-photon polarization spectroscopy. Three dye lasers were used as atomic excitation sources. The first two dye lasers charged with rhodamine 570 were pumped by the second harmonics of a Nd:YAG laser. Atoms in the high-lying even parity levels were excited to autoionizing states and ionized by scanning the third dye laser, which was pumped by the third harmonics of the Nd:YAG laser.