Preparation and optical properties of high-quality green cobalt sapphires

Zhu, Zhonghua; Zhang, Huiting; Wang, Yazhao; Wu, Wenxia; Wu, Limin; Zeng, Ninghan; Ren, Hao; Xu, Shoulei; Goodman, Bernard Albert; Deng, Wen

doi:10.1016/j.jlumin.2023.120354

Journal of Luminescence

2024

DOI: 10.1016/j.jlumin.2023.120354

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Preparation and optical properties of high-quality green cobalt sapphires

Zhonghua Zhu,

Huiting Zhang,

Yazhao Wang

et al.

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Cited by 3 publications

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Design, growth and photoluminescence properties of Yb3+:ErSZ and Er3+:YbSZ single crystals excited by 1550 nm and 980 nm lasers

Kong,

Zhang,

et al. 2024

Optical Materials

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Design, growth and photoluminescence properties of Yb3+:ErSZ and Er3+:YbSZ single crystals excited by 1550 nm and 980 nm lasers

Kong,

Zhang,

et al. 2024

Optical Materials

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Highly efficient ultraviolet and visible light emissions from upconversion transitions in Ho/Tm/Yb co-doped lutecia-stabilized zirconia single crystals excited by a 980 nm laser

Lu,

Zhang,

Kong

et al. 2024

CrystEngComm

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Modeling of Material Removal Rate for the Fixed-Abrasive Double-Sided Planetary Grinding of a Sapphire Substrate

Chen,

Hu,

Wang

et al. 2024

Materials

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Double-sided planetary grinding (DSPG) with a fixed abrasive is widely used in sapphire substrate processing. Compared with conventional free abrasive grinding, it has the advantages of high precision, high efficiency, and environmental protection. In this study, we propose a material removal rate (MRR) model specific to the fixed-abrasive DSPG process for sapphire substrates, grounded in the trajectory length of abrasive particles. In this paper, the material removal rate model is obtained after focusing on the theoretical analysis of the effective number of abrasive grains, the indentation depth of a single abrasive grain, the length of the abrasive grain trajectory, and the groove repetition rate. To validate this model, experiments were conducted on sapphire substrates using a DSPG machine. Theoretical predictions of the material removal rate were then juxtaposed with experimental outcomes across varying grinding pressures and rotational speeds. The trends between theoretical and experimental values showed remarkable consistency, with deviations ranging between 0.2% and 39.2%, thereby substantiating the model’s validity. Moreover, leveraging the insights from this model, we optimized the disparity in the material removal rate between two surfaces of the substrate, thereby enhancing the uniformity of the machining process across both surfaces.

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Preparation and optical properties of high-quality green cobalt sapphires

Cited by 3 publications

References 50 publications

Design, growth and photoluminescence properties of Yb3+:ErSZ and Er3+:YbSZ single crystals excited by 1550 nm and 980 nm lasers

Design, growth and photoluminescence properties of Yb3+:ErSZ and Er3+:YbSZ single crystals excited by 1550 nm and 980 nm lasers

Highly efficient ultraviolet and visible light emissions from upconversion transitions in Ho/Tm/Yb co-doped lutecia-stabilized zirconia single crystals excited by a 980 nm laser

Modeling of Material Removal Rate for the Fixed-Abrasive Double-Sided Planetary Grinding of a Sapphire Substrate

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