发明名称 |
Method and apparatus for semiconductor laser driving capable of stably generating consistent optical pulse widths of laser diodes |
摘要 |
A semiconductor laser driving circuit includes a light amount detector, a frequency determiner, and an initialization circuit. The light amount detector detects an amount of light emitted by a laser diode, and outputs a first voltage corresponding to the amount of light. The frequency determiner determines a frequency for determining a time period of a detecting operation to detect differential quantum efficiency of the laser diode. The initialization circuit performs an initialization operation to detect differential quantum efficiency of the laser diode with a variation of the time period of the initialization operation according to the frequency determined by the frequency determiner.
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申请公布号 |
US2005141576(A1) |
申请公布日期 |
2005.06.30 |
申请号 |
US20040972359 |
申请日期 |
2004.10.26 |
申请人 |
IKEDA JUNICHI;KYOUGOKU HIROAKI |
发明人 |
IKEDA JUNICHI;KYOUGOKU HIROAKI |
分类号 |
H01S5/062;H01S3/00;H01S5/042;H01S5/0683;(IPC1-7):H01S3/00 |
主分类号 |
H01S5/062 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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