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Aufsatz zugänglich unter
URN: urn:nbn:de:bvb:29-opus-38935
URL: http://www.opus.ub.uni-erlangen.de/opus/volltexte/2012/3893/
Temperature dependence and quantum efficiency of ultrabroad NIR photoluminescence from Ni2+centers in nanocrystalline Ba-Al titanate glass ceramics
Gao, Guojun ;
Peng, Mingying ;
Wondraczek, Lothar
| Originalveröffentlichung: |
| (2012) Optics Letters 37.7 (2012): S. 1166-1168. 19.11.2012 <http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-7-1166> |
| pdf-Format:
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| SWD-Schlagwörter: |
| - |
| Collection: |
| Universität Erlangen-Nürnberg / Von der FAU geförderte Open Access Artikel / 2012 |
| Fakultät: |
| Technische Fakultät |
| DDC-Sachgruppe: |
| Technik |
| Dokumentart: |
| Aufsatz |
| Sprache: |
| Englisch |
| Erstellungsjahr: |
| 2012 |
| Publikationsdatum: |
| 19.11.2012 |
| Kurzfassung in Englisch: |
| Ultrabroad near-infrared (NIR) photoluminescence from Ni2+-centers in nanocrystalline Ba-Al titanate glass ceramics was studied by temperature-dependent static and dynamic photoluminescence spectroscopy in the regime of 10 to 300 K. Photoluminescence covers the spectral range of about 1100 nm to >1600 nm with a typical bandwidth (FWHM) greater than 300 nm. For UV-LED excitation at 352 nm, an internal quantum efficiency of 65% is obtained. The excited state lifetime τ at room temperature is 39 μs. The stimulated emission cross section σem is 8.5×10−20 cm2, resulting in a practical figure of merit, σem*τ, of 3.3×10−24 cm2 s at room temperature. These properties suggest suitability as a broadband gain medium for tunable lasers and optical amplifiers. |
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