Two-photon polarization spectroscopy of autoionizing states

Jong Hoon Yi, Hyun Min Park, Jong Min Lee

Jongmin Lee, Do-Young Jeong, Yongjoo Rhee

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.

Vanik E. Mkrtchian, V. O. Chaltykyan

Jonghoon Yi, Jongmin Lee, Hong Jin Kong

The autoionizing states of ytterbium (Yb) were investigated by three-photon polarization spectroscopy. Ytterbium atoms were excited to autoionizing states through the transition 6${\mathit{s}}^{2}$ $^{1}$${\mathit{S}}_{0}$--6s6p $^{3}$${\mathit{P}}_{1}$--4${\mathit{f}}^{13}$${(}^{2}$${\mathit{F}}_{7/2}$)6${\mathit{s}}^{2}$6${\mathit{p}}_{3/2}$ (J=2). The total angular momenta J of the autoionizing states were identified by comparing the line intensities from the spectra recorded with different combinations of the laser polarization. In this work, 17 autoionizing states including many new ones were investigated. For all these states Fano parameters and J values are measured.

P. Lambropoulos, P. Zoller