采用激光束预（光刻）磁盘伺服图形，是研究开发超高道密度磁盘驱动器的新途径。利用激光束具有的强度高、单色性好、方向性好、平行度高、功率密度大、相干性好等优点，应用于预（光）刻涂胶的磁盘，能获得高精度的聚焦生成亚微米级斑点的伺服图形，有效地提高了磁盘存储器的道密度。 Using laser beam pre-lithography disk servo graphics is a new way to research and develop ultra-high density disk drives. The use of laser beam has the advantages of high intensity, good monochromaticity, good directivity, high parallelism, high power density, good coherence and the like, and can be applied to a pre-coated optical disk to obtain high-precision focus generation Sub-micron spot servo graphics, effectively improve the disk memory channel density.