Laser heating conditions for copper sphere implantation into borosilicate glass
Laser heating conditions for copper sphere implantation into borosilicate glass
复制标题
硼硅酸盐玻璃中铜球植入的激光加热条件
DOI：
10.1016/j.optlastec.2021.107494
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发表时间：
2022
期刊：
影响因子：
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通讯作者：
Morita Noboru
中科院分区：
文献类型：
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作者：
Fukushima Shunta;Hidai Hirofumi;Matsusaka Souta;Chiba Akira;Morita Noboru
在玻璃中注入金属可以用于许多不同的目的，从增强电光性能到改变基板的机械性能。一种方法涉及使用连续激光照射，通过从与玻璃基板的一侧直接接触的金属箔转移颗粒来植入金属球。这个过程发生在非常短的时间内（几十毫秒），是无法识别的：由于明亮的热发射，它不能直接观察到。在这项研究中，连续激光加热条件下注入铜球硼硅酸盐玻璃进行了研究，通过光谱和数值计算，以估计铜箔的温度。发射光谱显示，注入过程中的温度达到5100 K，这大大超过了激光吸收的温度阈值（102000 K）。在这样的条件下，等离子体形成并且使得铜颗粒能够迁移到玻璃主体中。等离子体的传播速度随着激光功率密度的增加而增加。当等离子体传播速度为20-50 mm/s时，注入铜球。当等离子体传播速度大于50 mm/s时，铜球不能注入，光纤发生熔断。
Implanting metals in glass can serve many different purposes, ranging from enhancing the electro-optical properties to modifying the mechanical properties of the substrate. One approach involves the use of continuous laser illumination to implant metal spheres by transferring particles from a metal foil in direct contact with one side of the glass substrate. The process, which occurs in a very short period time (in tens of milliseconds), is unidentified: due to the bright thermal emissions, it cannot be directly observed. In this study, the continuous laser heating conditions required for implanting copper spheres in borosilicate glass were investigated via spectroscopy and numerical calculations to estimate the temperature of the copper foil. Emission spectroscopy revealed that the temperature during implantation reached 5100 K, which largely exceeded the temperature threshold for laser absorption (∼2000 K). Under such conditions, the plasma forms and enables the migration of copper particles into the glass host. The plasma propagation speed increased with increasing laser power density. The copper sphere was implanted when the plasma propagation speed was 20–50 mm/s. The copper sphere could not be implanted, and fiber fuse occurred when the plasma propagation speed was higher than 50 mm/s.