以微米级分辨率三维laser打印宏观级玻璃物体
Three-dimensional laser printing of macro-scale glass objects at a micro-scale resolution
摘要：
三维（3D）打印允许以极高的灵活性生产几何形状复杂的3D物体，其目前在材料、功能以及应用领域方面正在经历快速扩展。当试图在玻璃中打印3D微结构时，飞秒激光诱导化学蚀刻（FLICE）已被证明是一种强大的方法。在这里，我们展示了高达~3.8 cm的大高度的宏观尺度3D玻璃物体的制造，其中具有良好的平衡（即，横向与纵向）空间分辨率约为20 μm。通过揭示超快激光脉冲与熔融石英的相互作用中未探索的机制，从而实现了激光脉冲在熔融石英内部深处的无像差聚焦，从而实现了显着的成就。
英文摘要：
Three-dimensional (3D) printing has allowed for production of geometrically complex 3D objects with extreme flexibility, which is currently undergoing rapid expansions in terms of materials, functionalities, as well as areas of application. When attempting to print 3D microstructures in glass, femtosecond laser induced chemical etching (FLICE) has proved itself a powerful approach. Here, we demonstrate fabrication of macro-scale 3D glass objects of large heights up to ~3.8 cm with a well-balanced (i.e., lateral vs longitudinal) spatial resolution of ~20 μm. The remarkable accomplishment is achieved by revealing an unexplored regime in the interaction of ultrafast laser pulses with fused silica which results in aberration-free focusing of the laser pulses deeply inside fused silica.
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