| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Cooperative Quantum Cutting in Er3+/Yb3+ Codoped Oxyfluoride Glass Ceramics |
| LUO Shi-Qiang, ZHAO Li-Juan**, HU Nan, ZHANG Ming, ZHANG Pan, WANG Ya-Zhou, YU Hua**
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1Key Laboratory for Weak Light Nonlinear Photonics (Ministry of Education), Nankai University, Tianjin 300457
2College of Physics, Nankai University, Tianjin 300071
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| Cite this article: |
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LUO Shi-Qiang, ZHAO Li-Juan, HU Nan et al 2011 Chin. Phys. Lett. 28 034207 |
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Abstract Oxyfluoride glass ceramics doped with Er3+/Yb3+ was synthesized. Rare earth ions are doped into fluoride nanocrystals according to x-ray diffractive patterns. The enhanced red emission of Er3+/Yb3+ in the fluoride nanocrystals, excited by xenon lamp at 449 nm, is investigated and analyzed by cooperative quantum cutting mode. The cross relaxation appears from 4F5/2 →4F9/2 to 4I15/2 →4I13/2 because of the nearer distance of rare earth ions and the larger absorption section of 4I15/2 →4I13/2 in the quantum cutting. It results in two emissions of 4F9/2 →4I15/2 and 4I13/2 →4I15/2. This implies that a 449 nm photon could dissolve into two photons with wavelength 665 nm and 1530 nm. This could be an effective way to obtain 1530 nm emission for optical communication.
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| Keywords:
42.70.-a
81.05.Pj
78.67.Bf
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Received: 17 September 2010
Published: 28 February 2011
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| PACS: |
42.70.-a
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(Optical materials)
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81.05.Pj
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(Glass-based composites, vitroceramics)
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78.67.Bf
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(Nanocrystals, nanoparticles, and nanoclusters)
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