| DOI | Resolve DOI: https://doi.org/10.1007/978-1-4613-0899-7_28 |
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| Author | Search for: Lockwood, D. J.1; Search for: Rowell, N. L.1 |
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| Name affiliation | - National Research Council of Canada
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| Format | Text, Book chapter |
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| Subject | optics; ptoelectronics; plasmonics and optical devices |
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| Abstract | 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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| Publication date | 1987 |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NPARC number | 21277583 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction |
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| Record identifier | 5e4fd554-df63-492e-854e-39e31a77a157 |
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| Record created | 2016-04-21 |
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| Record modified | 2020-06-10 |
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