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Intense mid-infrared emission at 3.9 µm in Ho 3+ -doped ZBYA glasses for potential use as a fiber laser
Intense mid-infrared emission at 3.9 µm in H o 3 + -doped ZBYA glasses with direct upper laser level ( H o 3 + : 5 I 5 ) pumping at a wavelength of 888 nm is reported for the first time, to the best of our knowledge. Spectroscopic parameters were determined using the Judd–Ofelt theory and the measur...
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Published in: | Optics letters 2020-08, Vol.45 (15), p.4272 |
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Main Authors: | , , , , , , , , |
Format: | Article |
Language: | English |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | Intense mid-infrared emission at 3.9 µm in H o 3 + -doped ZBYA glasses with direct upper laser level ( H o 3 + : 5 I 5 ) pumping at a wavelength of 888 nm is reported for the first time, to the best of our knowledge. Spectroscopic parameters were determined using the Judd–Ofelt theory and the measured absorption spectrum. The maximum emission cross section of the H o 3 + -doped ZBYA glass is estimated to be 2.7 × 10 − 21 c m 2 at 3906 nm. Additionally, fluorescence spectra and lifetimes of ZBYA glasses with different H o 3 + ion doping concentrations were measured. The results provide theoretical and experimental basis for better selection of rare-earth-doped matrix glasses to achieve a fluorescence output centered on a wavelength of 3.9 µm. |
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ISSN: | 0146-9592 1539-4794 |
DOI: | 10.1364/OL.397653 |