中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Light emission power control circuit for semiconductor laser

文献类型:专利

作者SAKURAI TATSUAKI
发表日期1991-10-31
专利号JP1991245327A
著作权人RICOH CO LTD
国家日本
文献子类发明申请
其他题名Light emission power control circuit for semiconductor laser
英文摘要PURPOSE:To attain correct pit formation and recording by high speed switching by using bias power, for which driving at the time of recording is set weaker than the reproducing power, as a base and superimposing prescribed power to this bias power as recording power. CONSTITUTION:At the time of recording, a recording current value I3 determined by a current setting circuit 16 flows through a third constant current source 15 to a semiconductor laser 2 so that a switch element 8 can be turned off and prescribed recording power can be outputted, and a switch element 14 is turned on/off corresponding to a recording information signal. In such a way, the bias power, for which driving at the time of recording is set weaker than the reproducing power, is used as the base and the prescribed power is superimposed to this bias power and defined as the recording power. Thus, the correct pit formation is attained in the case of recording and recording is enabled by high-speed switching as well.
公开日期1991-10-31
申请日期1990-02-22
状态失效
源URL[http://ir.opt.ac.cn/handle/181661/59663]  
专题半导体激光器专利数据库
作者单位RICOH CO LTD
推荐引用方式
GB/T 7714
SAKURAI TATSUAKI. Light emission power control circuit for semiconductor laser. JP1991245327A. 1991-10-31.

入库方式: OAI收割

来源:西安光学精密机械研究所

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