Growth, structure and optical properties of Yb/Ho: CaLaGa3O7 laser crystal

•Single crystal of Yb3+/Ho3+ co-doped CaLaGa3O7 was grown successfully.•The structure of Yb/Ho: CaLaGa3O7 crystal is refined with the XRD data.•Detailed spectroscopic analyses were carried out.•The prepared Yb/Ho: CaLaGa3O7 crystal is a promising candidate for 2.86 μm laser. Yb/Ho: CaLaGa3O7 as mid-...

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Bibliographic Details
Published in:Materials letters 2018-07, Vol.223, p.146-149
Main Authors: Liu, Yunyun, Wang, Yan, Zhu, Zhaojie, You, Zhenyu, Li, Jianfu, Tu, Chaoyang
Format: Article
Language:English
Subjects:
Crystal growth
Mid-IR laser
Optical materials and properties
X-ray Rietveld refinement
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Summary:•Single crystal of Yb3+/Ho3+ co-doped CaLaGa3O7 was grown successfully.•The structure of Yb/Ho: CaLaGa3O7 crystal is refined with the XRD data.•Detailed spectroscopic analyses were carried out.•The prepared Yb/Ho: CaLaGa3O7 crystal is a promising candidate for 2.86 μm laser. Yb/Ho: CaLaGa3O7 as mid-IR laser crystal was successfully grown by the Czochralski method for the first time. The effects of Yb3+ on the structure parameters and spectroscopic properties have been investigated. In comparison with Ho3+ singly-doped CaLaGa3O7 crystal, Yb3+ not only enhances 2.86 µm emission but also depopulates the Ho3+: 5I7 level in Yb/Ho: CaLaGa3O7 crystal, which is beneficial to the possible population inversion for Ho3+: 5I6→5I7. Results indicate that the prepared Yb/Ho: CaLaGa3O7 crystal is a promising candidate for 2.86 μm mid-infrared laser applications.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2018.03.182