Fabrication of Er:Y2O3 transparent ceramics for 2.7?μm mid-infrared solid-state lasers |
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| Affiliation: | 1. Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China;2. School of Electrical and Electronic Engineering, Nanyang Technological University, 639798, Singapore;3. School of Materials Science and Engineering, Nanyang Technological University, 639798, Singapore;4. College of New Materials and New Energies, Shenzhen Technology University, Shenzhen 518118, China;1. Laser Materials Section, Raja Ramanna Centre for Advanced Technology, Indore, 452013, India;2. Synchrotron Utilization Section, Raja Ramanna Centre for Advanced Technology, Indore, 452013, India;3. Homi Bhabha National Institute, BARC, Mumbai, India;1. School of Material Science and Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, China;2. Key Laboratory of Transparent Opto-functional Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 201899, China;3. Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China;1. National Institute for Laser, Plasma and Radiation Physics, Laboratory of Solid-State Quantum Electronics, Magurele 077125, Ilfov, Romania;2. National Institute of Materials Physics, Magurele 077125, Ilfov, Romania;3. Institute for Single Crystals of NAS of Ukraine, 60 Nauky Ave., Kharkiv 61072, Ukraine;1. New York State College of Ceramics, Inamori School of Engineering, Alfred University, Alfred, NY, 14802, USA;2. Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou, 221116, Jiangsu, China;3. School of Materials Science and Engineering, Nanyang Technological University, 639798, Singapore;4. College of New Materials and New Energy, Shenzhen Technology University, Shenzhen, 518118, Guangdong, China;5. School of Electrical and Electronic Engineering, Nanyang Technological University, 639798, Singapore;1. College of Materials Science and Engineering, Nanjing Tech University, Nanjing 210009, China;2. Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China |
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| Abstract: | Laser grade 7 at.% Er:Y2O3 transparent ceramics with submicron grain size were fabricated by using one-step vacuum sintering followed by hot isostatic pressing (HIPing) technique. Through studying the sintering trajectory of Er:Y2O3 ceramics, the sintering temperature zone where sufficient relative density (>96%), no pore-boundary separation, and sub-micron grain size (<1 μm) ceramic samples could be identified. The samples pre-sintered in this zone were readily densified by HIPing. To maximum the densification and achieve high transparency, it is critical to suppress the final-stage grain growth. After HIPing at 1520 °C, the Er:Y2O3 ceramics were fully densified without further grain growth, and exhibited in-line transmission of about 81.6% at 2000 nm. Continuous wave (CW) room temperature laser operation of the Er:Y2O3 transparent ceramic at 2.7 μm was demonstrated. |
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| Keywords: | Solid-state lasers Mid-infrared Transparent ceramics Microstructure |
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