最近,日本三洋电机公司采用新开发的635mm红色半导体激光、高分辨率摄像管,开发一种高密度光盘技术,将光盘的记录密度提高了3倍,实现以前4倍密度光盘的再生。在这种高密度光盘技术开发中,关键技术有三:①635mm红色半导体激光的开发。该公司最近开发成功行业界最短的红色半导体激光,波长635mm Recently, Sanyo Electric Co., Ltd. adopted a newly developed 635mm red semiconductor laser and high-resolution camera tube to develop a high-density optical disk technology, which increased the recording density of optical disks by three times and regenerated the previous four-times-density optical disks. In this high-density optical disc technology development, there are three key technologies: ① 635mm red semiconductor laser development. The company recently developed the industry’s shortest red semiconductor laser with a wavelength of 635mm