EXPERIMENTAL STUDY OF THE Cs$_2$ TRIPLET STATES BY PERTURBATION FACILITATED INFRARED-INFRARED DOUBLE RESONANCE AND TWO-PHOTON EXCITATION SPECTROSCOPY
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Date
2007
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Publisher
Ohio State University
Abstract
Fifty 3$^3\Sigma_g^+$ {\em v}$=2-9 \leftarrow$ {\em X}$^1\Sigma_g^+$ two-photon transitions of Cs$_2$ have been observed in the infrared wavelength. Vibrational resolved fluorescence into both bound levels and the continuum of the {\em a}$^3\Sigma_u^+$ state has been recorded with monochromator. Calculated 3$^3\Sigma_g^+ \rightarrow$ {\em a}$^3\Sigma_u^+$ fluorescence spectra are compared with observed spectra. With two infrared diode lasers,totally 43 ro-vibrational levels of the Cs$_2$ 3$^3\Pi_g$ state have been observed by perturbation facilitated infrared-infrared double resonance spectroscopy. Rotationally resolved fluorescence to the {\em a}$^3\Sigma_u^+$ state was also recorded.
Description
Author Institution: Department of Physics and Key Laboratory of Atomic and Molecular Nanosciences, Tsinghua University,Beijing 100084, China; V. A. Fock Institute of Physics, St. Petersburg State University, 1 Ulyanovskaya Street, Petrodvorets, St. Petersburg 198504, Russia; Laboratoire de Physique des Atomes, Lasers, Mole\'cule et Surfaces (PALMS), CNRS et Universite\' RENNES I (UMR 6627), Campus de Beaulieu, Bt 11B 35042 Cedex, France