Nonstationary behavior of the upconversion processes of $Er^{3+}:Yb^{3+}$ ions pair doping the $Y_2O_3$ ceramic illuminated with 976 nm laser light
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arXiv
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| Format: | Preprint |
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2024
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| _version_ | 1866916410588921856 |
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| author | Dudas, Liviu |
| author_facet | Dudas, Liviu |
| contents | The studies of the upconversion response of RE ions in various hosts usually depict a static picture, whereas, at constant illumination, the upconverted emission is also constant. We discovered here that, at least in the case of $Y_2O_3$ doped with $Er^{3+}:Yb^{3+}$, this is not the case. At constant illuminated power, the upconversion emission is not only fluctuating, but it varies in a manner which seems to be a superposition of intensity waves with different frequencies. We present here the results of the measurements we've performed on $Y_2O_3$ with $1\%Er^{3+}-2\%Yb^{3+}$. The origin of this effect remain to be established but it shows that the energy transfers during the upconversion are an interplay of absorption-saturation-emission-relaxation processes. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2409_15921 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Nonstationary behavior of the upconversion processes of $Er^{3+}:Yb^{3+}$ ions pair doping the $Y_2O_3$ ceramic illuminated with 976 nm laser light Dudas, Liviu Atomic Physics Materials Science Optics The studies of the upconversion response of RE ions in various hosts usually depict a static picture, whereas, at constant illumination, the upconverted emission is also constant. We discovered here that, at least in the case of $Y_2O_3$ doped with $Er^{3+}:Yb^{3+}$, this is not the case. At constant illuminated power, the upconversion emission is not only fluctuating, but it varies in a manner which seems to be a superposition of intensity waves with different frequencies. We present here the results of the measurements we've performed on $Y_2O_3$ with $1\%Er^{3+}-2\%Yb^{3+}$. The origin of this effect remain to be established but it shows that the energy transfers during the upconversion are an interplay of absorption-saturation-emission-relaxation processes. |
| title | Nonstationary behavior of the upconversion processes of $Er^{3+}:Yb^{3+}$ ions pair doping the $Y_2O_3$ ceramic illuminated with 976 nm laser light |
| topic | Atomic Physics Materials Science Optics |
| url | https://arxiv.org/abs/2409.15921 |