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1988年7月,日本松下电气公司研究人员宣称,他们已制成世界上第一支发射蓝光的小型激光器。该器件发射的光束波长只为以前小型激光器的一半,将这种光聚焦后用于阅读较小数据“凹坑”具有更高分辩率。公
In July 1988, researchers at Matsushita Electric Co. announced that they had made the world’s first small laser that emits blue light. The wavelength of the beam emitted by this device is only half that of previous small lasers, and focusing this light to read smaller data “pits” has a higher resolution. public