Influence of Numerical Aperture on Molten Area Formation in Fusion Micro-Welding of Glass by Picosecond Pulsed Laser
Influence of Numerical Aperture on Molten Area Formation in Fusion Micro-Welding of Glass by Picosecond Pulsed Laser
复制标题
皮秒脉冲激光玻璃熔微焊接数值孔径对熔化区形成的影响
DOI：
10.3390/app9071412
复制
发表时间：
2019
期刊：
影响因子：
--
通讯作者：
A. Okada
中科院分区：
文献类型：
--
作者：
Zhiyong Ouyang;Y. Okamoto;Y. Ogino;T. Sakagawa;A. Okada
聚焦条件，如数值孔径(N.A.)在玻璃熔化微细焊接中，对熔化区的形成和稳定的焊接过程有很大的影响。在这项研究中，波长为1064 nm、脉宽为12.5ps的皮秒脉冲激光通过数值孔径为0.45、0.65和0.85的球差校正的物镜在硼硅酸盐玻璃中实现了紧密聚焦。通过对玻璃内聚焦情况、吸收点移动的分析，实验研究了数值孔径对熔区形成的影响，并对熔区特性进行了讨论。结果表明，0.65的N.A.具有良好的聚焦特性，可以形成大范围、连续的无裂纹熔区，从而实现了玻璃材料的皮秒脉冲激光稳定连接。
Focusing condition such as numerical aperture (N.A.) has a great influence on the creation of molten area and the stable welding process in fusion micro-welding of glass. In this study, a picosecond pulsed laser of 1064 nm in wavelength and 12.5 ps in pulse duration was tightly focused inside a borosilicate glass using objective lenses of numerical apertures 0.45, 0.65, and 0.85 with spherical aberration correction. Influence of numerical aperture on molten area formation was experimentally investigated through analysis of focusing situation in glass, and movement of absorption point, and then molten area characteristics were discussed. It is concluded that N.A. of 0.65 with superior focusing characteristics can form a large and continuous molten area without cracks, which enables achievement of stable joining of glass material by picosecond pulsed laser.
影响因子：
3.8
作者：
Miyamoto, Isamu;Cvecek, Kristian;Schmidt, Michael
通讯作者：
Schmidt, Michael