This work introduces a new approach to prepare active GRadient-INdex (GRIN) materials by gradually doping commercial silica cylindrical substrates with different optically active ions or materials by the Laser Zone Melting (LZM) process. Scanning Electron Microscopy (SEM) combined with energy dispersive X-ray (EDX) analysis demonstrate that the dopants are gradually incorporated into the cylindrical substrate under controlled penetration depths. This simple, environmentally respectful fabrication method opens the possibility to manufacture versatile GRIN optical elements on a large scale and reduced cost.

中文翻译：

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通过激光辅助径向掺杂物扩散制备圆柱形有源GRIN介质：概念验证

这项工作引入了一种新的方法来制备活性GRadient-INDex（GRIN）材料，方法是通过激光区域熔化（LZM）工艺用不同的光学活性离子或材料逐渐掺杂商用硅胶圆柱基板。扫描电子显微镜（SEM）结合能量色散X射线（EDX）分析表明，在受控的穿透深度下，掺杂剂逐渐掺入了圆柱形基材中。这种简单，环保的制造方法为大规模生产通用GRIN光学元件和降低成本提供了可能性。