Article Dans Une Revue Optics Communications Année : 2025

Rare-earth doped Bi4Ge3O12 crystals: Advances in growth techniques and luminescence properties for laser applications

Résumé

Trivalent rare-earth (RE) ion-doped Bi4Ge3O12 (BGO) crystals exhibit exceptional potentialities for laser applications owing to their favorable emission characteristics, superior optical/thermo-mechanical properties, and non-hygroscopic nature. This review systematically summarizes recent progresses in the growth techniques and luminescence properties of RE3+ (Nd3+, Er3+, Tm3+, Ho3+, Pr3+)-doped BGO crystals. We critically analyze four dominant growth techniquess, such as Czochralski, Micro-pulling-down (μ-PD), Floating zone, and Bridgman-Stockbarger, thus highlighting their suitability for achieving high-quality single crystals. Detailed spectroscopic investigations reveal that Nd3+ -doped BGO leads to efficient continuous-wave lasing at 1064 nm, while Pr3+ and Er3+ co-dopings enable multi-wavelength emissions spanning visible to mid-infrared regions. Challenges in suppressing non-radiative transitions and optimizing dopant concentrations for laser performance are discussed, providing a roadmap for future research in advanced optoelectronic devices.

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hal-05157750 , version 1 (01-12-2025)

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Jie Xu, Yannick Guyot, Jian Liu, Xiaodong Xu, Jun Xu, et al.. Rare-earth doped Bi4Ge3O12 crystals: Advances in growth techniques and luminescence properties for laser applications. Optics Communications, 2025, 583, pp.131730. ⟨10.1016/j.optcom.2025.131730⟩. ⟨hal-05157750⟩
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