Yellow stimulated emission from Dy$^{3+}$-doped silica glass microspheres
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arXiv
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| Main Authors: | , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866909458807914496 |
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| author | Sureshkumar, Abhishek Demaimay, Jonathan Perin, Georges Hameed, Shahaz Guendouz, Mohammed Ollivier, Hélène Dumeige, Yannick Loiko, Pavel Brasse, Gurvan Braud, Alain Camy, Patrice Trebaol, Stéphane |
| author_facet | Sureshkumar, Abhishek Demaimay, Jonathan Perin, Georges Hameed, Shahaz Guendouz, Mohammed Ollivier, Hélène Dumeige, Yannick Loiko, Pavel Brasse, Gurvan Braud, Alain Camy, Patrice Trebaol, Stéphane |
| contents | Dy$^{3+}$-doped silica glass whispering gallery mode microspheres are fabricated by fiber fusion splicing. They present an almost ideal spherical morphology with a radius ranging from 60 to 67 $μ$m as determined by confocal laser microscopy. The host composition of the microsphere is close to that of the fiber core. The dopant Dy$^{3+}$ ions are uniformly distributed across the microsphere as evidenced by $μ$-luminescence studies and present a luminescence lifetime. The Dy$^{3+}$-doped glass microspheres were excited via evanescent field coupling using a half-tapered fiber and a blue 450-nm GaN laser diode (direct pumping scheme). The yellow fluorescence of Dy$^{3+}$ ions is filtered by the whispering gallery modes (free spectral range: 0.5 nm for 67-$μ$m radius microsphere). The onset of stimulated emission is further observed highlighting the potential of such microresonators for narrow-linewidth light sources directly emitting visible light. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_10029 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Yellow stimulated emission from Dy$^{3+}$-doped silica glass microspheres Sureshkumar, Abhishek Demaimay, Jonathan Perin, Georges Hameed, Shahaz Guendouz, Mohammed Ollivier, Hélène Dumeige, Yannick Loiko, Pavel Brasse, Gurvan Braud, Alain Camy, Patrice Trebaol, Stéphane Optics Dy$^{3+}$-doped silica glass whispering gallery mode microspheres are fabricated by fiber fusion splicing. They present an almost ideal spherical morphology with a radius ranging from 60 to 67 $μ$m as determined by confocal laser microscopy. The host composition of the microsphere is close to that of the fiber core. The dopant Dy$^{3+}$ ions are uniformly distributed across the microsphere as evidenced by $μ$-luminescence studies and present a luminescence lifetime. The Dy$^{3+}$-doped glass microspheres were excited via evanescent field coupling using a half-tapered fiber and a blue 450-nm GaN laser diode (direct pumping scheme). The yellow fluorescence of Dy$^{3+}$ ions is filtered by the whispering gallery modes (free spectral range: 0.5 nm for 67-$μ$m radius microsphere). The onset of stimulated emission is further observed highlighting the potential of such microresonators for narrow-linewidth light sources directly emitting visible light. |
| title | Yellow stimulated emission from Dy$^{3+}$-doped silica glass microspheres |
| topic | Optics |
| url | https://arxiv.org/abs/2501.10029 |