| Автор | Jon-Paul R Wells |
| Автор | Mitsuo Yamaga |
| Автор | Nobuhiro Kodama |
| Автор | Thomas P J Han |
| Дата выпуска | 1999-10-04 |
| dc.description | A single Er<sup>3+</sup> centre in CaGdAlO<sub>4</sub>:Er<sup>3+</sup> has been identified to have C<sub>4v</sub> symmetry from polarized laser selective excitation. This is consistent with isovalent substitution of the Er<sup>3+</sup> ions for host crystal Gd<sup>3+</sup> ions. Using both optical and infrared absorption and polarized laser excited fluorescence, 59 crystal-field energy levels and their wavefunction symmetries have been identified and used to perform comprehensive single electron crystal-field analyses for the Er<sup>3+</sup> ion centre. For excitation of the <sup>4</sup>F<sub>9/2</sub> multiplet, blue and green upconversion fluorescence is observed. Self-absorption dips recorded in upconversion excitation spectra are indicative of the presence of radiative energy transfer processes. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Polarized laser spectroscopy and crystal-field analysis of Er<sup>3+</sup> doped CaGdAlO<sub>4</sub> |
| Тип | paper |
| DOI | 10.1088/0953-8984/11/39/310 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 11 |
| Первая страница | 7545 |
| Последняя страница | 7555 |
| Выпуск | 39 |
