Influence of the spectral composition of the pump radiation on the lasing and the spectral-luminescence characteristics of a YAlO3:Nd3+crystal
| Autor: | I. R. Rustamov, A F Umyskov, Ivan A Shcherbakov, Valerii A Smirnov, M. Kh. Ashurov, S P Nasel'skiĭ |
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| Rok vydání: | 1990 |
| Předmět: |
Materials science
business.industry Relaxation (NMR) General Engineering Physics::Optics Radiation medicine.disease_cause Molecular physics Ion Crystal Physics::Atomic and Molecular Clusters medicine Optoelectronics business Luminescence Absorption (electromagnetic radiation) Lasing threshold Ultraviolet |
| Zdroj: | Soviet Journal of Quantum Electronics. 20:1353-1356 |
| ISSN: | 0049-1748 |
| DOI: | 10.1070/qe1990v020n11abeh007512 |
| Popis: | An investigation was made of the influence of the spectral composition of the exciting light on the lasing and spectral-luminescence characteristics of a YAlO3:Nd3+ crystal. The spectral and relaxation characteristics of the photoinduced absorption, associated with the formation of color centers in the crystal, were determined. The induced absorption could increase the evolution of heat in the active element, but it did not influence the efficiency of filling the upper active level 4F3/2 of the Nd3+ ion. The mechanism responsible for the reduction in the lasing efficiency of the YAlO3:Nd3+ crystal in the presence of an ultraviolet component in the pump radiation spectrum was identified. |
| Databáze: | OpenAIRE |
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