Oscillations of the photon echo intensity in a pulsed magnetic field: Zeeman splitting in LiLuF4:Er3+
| Autor: | V. N. Lisin, A. M. Shegeda, K. I. Gerasimov |
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| Rok vydání: | 2012 |
| Předmět: | |
| Zdroj: | JETP Letters. 95:61-65 |
| ISSN: | 1090-6487 0021-3640 |
| Popis: | A method of high-resolution time-resolved optical spectroscopy using oscillations of the photon echo intensity in the presence of a perturbation, which splits the optical frequencies of the transitions of two or more ion subgroups, has been proposed and demonstrated. This method has been applied to systems in which the Zee-man effect is manifested. The transition frequencies of ions are switched by a pulsed magnetic field. Oscillations of the photon echo intensity were observed in LiLuF4:Er3+ and LiYF4:Er3+. The first minimum corresponding to the accumulated phase of the electric dipole moment π/2 is reached in the pulsed magnetic field with an amplitude of ∼2 G at a duration of 30 ns. The Zeeman splitting in this field is ∼10 MHz, which is much less than the laser spectral width (0.15 A ∼ 9 GHz). The g factor of the 4 F 9/2(I) excited state of the Er3+ ion in the LiLuF4 matrix has been determined in zero magnetic field. The comparison with the g-factor value found from the measurement of the absorption spectrum in a magnetic field of 8 kG has been performed. |
| Databáze: | OpenAIRE |
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