Role of Yb3+ ions on enhanced similar to 2.9 mu m emission from Ho3+ ions in low phonon oxide glass system
IR@CGCRI: CSIR-Central Glass and Ceramic Research Institute, Kolkata
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| Title |
Role of Yb3+ ions on enhanced similar to 2.9 mu m emission from Ho3+ ions in low phonon oxide glass system
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| Creator |
Balaji, Sathravada
Gupta, Gaurav Biswas, Kaushik Ghosh, Debarati Annapurna, K |
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| Subject |
Glass
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| Description |
The foremost limitation of an oxide based crystal or glass host to demonstrate mid-infrared emissions is its high phonon energy. It is very difficult to obtain radiative mid-infrared emissions from these hosts which normally relax non-radiatively between closely spaced energy levels of dopant rare earth ions. In this study, an intense mid-infrared emission around 2.9 mu m has been perceived from Ho3+ ions in Yb3+/Ho3+ co-doped oxide based tellurite glass system. This emission intensity has increased many folds upon Yb3+:985 nm excitation compared to direct Ho3+ excitations due to efficient excited state resonant energy transfer through Yb3+:F-2(5/2) -> Ho3+:I-5(5) levels. The effective bandwidth (FWHM) and cross-section (sigma(em)) of measured emission at 2.9 mu m are assessed to be 180 nm and 9.1 x 10(-21) cm(2) respectively which are comparable to other crystal/glass hosts and even better than ZBLAN fluoride glass host. Hence, this Ho3+/Yb3+ co-doped oxide glass system has immense potential for the development of solid state mid-infrared laser sources operating at 2.9 mu m region.
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| Publisher |
Nature Publishing Group
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| Date |
2016-07
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://cgcri.csircentral.net/3723/1/kaushik.pdf
Balaji, Sathravada and Gupta, Gaurav and Biswas, Kaushik and Ghosh, Debarati and Annapurna, K (2016) Role of Yb3+ ions on enhanced similar to 2.9 mu m emission from Ho3+ ions in low phonon oxide glass system. Scientific Reports, 6. Article No-29203. ISSN 2045-2322 |
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| Relation |
http://cgcri.csircentral.net/3723/
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