| DOI | Trouver le DOI : https://doi.org/10.1007/978-1-4613-0899-7_28 |
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| Auteur | Rechercher : Lockwood, D. J.1; Rechercher : Rowell, N. L.1 |
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| Affiliation | - Conseil national de recherches du Canada
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| Format | Texte, Chapitre de livre |
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| Sujet | optics; ptoelectronics; plasmonics and optical devices |
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| Résumé | Tunable laser action in the near infrared (1.9um) has been observed from Co2+ ions as impurities in perovskite-structure KZnF3The laser emission occurs between the Co2+-ion cubic-field 4T2(4F) excited state and the 4T1(4F) ground state. The electronic structure of these two terms has been studied as a function of the Co2+ion concentration using Raman scattering and infrared absorption and emission spectroscopy. The 4T 1and 4T 2energy levels of single Co2+ ions have been determined from measurement at low cobalt concentrations (less than 2 at.%), and the 4T 2term exhibits effects due to the dynamic Jahn-Teller interaction. The vibronic structure seen in infrared absorption has also been assigned. At higher Co2+ ion concentrations the spectra show additional features due to the presence of clusters of the magnetic ions (predominantly pairs for concentrations less than 15 at.%). A theoretical analysis of the pair spectrum allows the bare Co2+-Co2+ exchange interaction to be determined. |
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| Date de publication | 1987 |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Numéro NPARC | 21277583 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 5e4fd554-df63-492e-854e-39e31a77a157 |
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| Enregistrement créé | 2016-04-21 |
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| Enregistrement modifié | 2020-06-10 |
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