Absorption Spectrum of Optically Pumped Ruby : I. Experimental Studies of Spectrum in Excited States

概要

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Absorption transitions between two excited optical states in ruby have been studied by comparong the absorption coefficients measured under optically pumped and unpumped conditions. The spectrum has been determined in the π-and σ-polarizations in the photon energy range from 5,500 to 45,000cm^<-1>. Several absorption bands have been found which arise from the transitions from the excited states t^3_<2g> ^2E_g and t^3_,<2g> ^2T_<1g> of the Cr^<3+> ion. From the locations and intensities of these bands, the terminal states of the observed transitions are assigned to the charge transfer state, the t^3_<2g> ^2T_<2g> state, and the doublet states belonging to the electron configuration t^2_<2g>e_g. Calculated energies between these states and the metastable states, t^3_<2g> ^2E_g and t^3_<2g> ^2T_<1g>, are in good agreement with the peak energies of the observed absorption bands. The present experiment gives new information inaccessible by the ordinary ground state absorption measurement, such as the locations of several doublet states with the configuration t^2_<2g>e_g and the intensities of doublet-doublet transitions in ruby.
社団法人日本物理学会の論文
1966-07-05