Demonstration of site-selective angular-resolved absorption spectroscopy of the 4I15∕2→4I13∕2 erbium transition in the monoclinic crystal Y2SiO5
We study the angular dependence in polarized light of the optical absorption for the Er3+transition 4I15∕2→4I13∕2in Y2SiO5, revealing thus the associated anisotropy and the orientation of the related absorption principal directions in the dielectric plan perpendicular to the monoclinic axis b. The m...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2020-12-01
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| Series: | Optical Materials: X |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590147820300140 |
| Summary: | We study the angular dependence in polarized light of the optical absorption for the Er3+transition 4I15∕2→4I13∕2in Y2SiO5, revealing thus the associated anisotropy and the orientation of the related absorption principal directions in the dielectric plan perpendicular to the monoclinic axis b. The measurements are performed at low temperature. This allows us to isolate the lowest crystal field levels in the ground and excited states. We spectrally resolve and independently characterize the two yttrium substitution sites in the Y2SiO5 matrix. The absorption tensor components cannot be unambiguously determined yet while only considering the investigated dielectric plane. Still, measurements remarkably demonstrate that this transition of interest well resolved at low temperature is not only a magnetic-dipole allowed transition but indeed a hybrid electric–magnetic transition. |
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| ISSN: | 2590-1478 |