Park Chang-Hyun, Petit Yannick, Canioni Lionel, Park Seung-Han
Department of Physics, Yonsei University, Seoul 03722, Korea.
University of Bordeaux, CNRS, CEA, CELIA, UMR 5107, 351 Cours de la Libération, 33405 Talence CEDEX, France.
Micromachines (Basel). 2020 Nov 24;11(12):1026. doi: 10.3390/mi11121026.
Five-dimensional (5D) recording and decoding is demonstrated by using femtosecond direct laser writing in a silver-containing commercial glass. In particular, laser intensities and ellipse orientations generated by anamorphic focusing are employed to produce 5D data storage unit (3D for XYZ, 1D for the orientation of the elliptically-shaped data storage unit and 1D for its fluorescence intensity). In the recording process, two different images of a 4-bit bitmap format were simultaneously embedded in the medium by multiplexing the elliptical orientation of the laser focus and its intensity so as to access oriented elliptical patterns with independent fluorescence intensity. In the decoding process, two merged original images were successfully reconstructed by comparing each data storage unit with a fabricated calibration matrix of 16 × 16 levels for elliptic orientations and fluorescence intensities. We believe this technique can be applied to semi-permanent high-density data storage device.
通过在含银商用玻璃中使用飞秒直接激光写入技术，实现了五维（5D）记录与解码。具体而言，利用变形聚焦产生的激光强度和椭圆取向来生成5D数据存储单元（XYZ方向为3D，椭圆形状数据存储单元的取向为1D，其荧光强度为1D）。在记录过程中，通过复用激光焦点的椭圆取向及其强度，将两个不同的4位位图格式图像同时嵌入介质中，以便访问具有独立荧光强度的取向椭圆图案。在解码过程中，通过将每个数据存储单元与一个为椭圆取向和荧光强度制作的16×16级校准矩阵进行比较，成功重建了两个合并的原始图像。我们相信这项技术可应用于半永久性高密度数据存储设备。
