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据美刊报道,美国和日本的一些大电子公司正在为研制用于高密度光盘记录技术的蓝光半导体激光器而展开激烈的竞争。这种半导体激光器成本低,可在室温下工作,因而近年来一直是研究人员努力探索的对象。 蓝光激光器的最大优点是它可以实现高密度的光盘存储。日本先锋公司的研究人员指出,蓝光激光器在光盘上刻出的记录信息位的凹坑大小仅及红光激光器刻出的凹坑长度及宽度的一半。因此,在一定的表面上,用蓝光激光器所能存入的数据为红光激光器的四倍之多。如果进一步缩小光盘上各道之间的间距及各凹坑问的距离,就可以使记录密度再增加
According to the American Journal, some large electronics companies in the United States and Japan are fiercely competing for the development of blue semiconductor lasers for high-density optical recording technology. The low cost of such semiconductor lasers and their ability to operate at room temperature have been the subject of intense research by researchers in recent years. The biggest advantage of a blue laser is its ability to achieve high-density optical disk storage. Researchers at Japan’s Pioneer Corporation pointed out that the size of the pit recorded by the Blu-ray laser on the disc is only half that of the pit engraved by the red laser. Therefore, on a given surface, the amount of data that a blue laser can hold is four times that of a red laser. If you further reduce the distance between the tracks on the disc and the distance between the pits, you can make the recording density and then increase