発光装置
文献类型：专利
| 作者 | 高橋 健夫; 近藤 隆彦 |
| 发表日期 | 1994-12-12 |
| 专利号 | JP1994101133B2 |
| 著作权人 | 日立東部セミコンダクタ株式会社 |
| 国家 | 日本 |
| 文献子类 | 授权发明 |
| 其他题名 | 発光装置 |
| 英文摘要 | PURPOSE:To stabilize the degree of modulation by detecting the AC component of a laser light to control the oscillated frequency and the amplitude to desired values and detecting the variance of the DC component to control the bias voltage of a light emitting element. CONSTITUTION:The frequency signal of an oscillating circuit 1 is amplified by an amplifier 2 and is supplied to a semiconductor laser element 23. Only the AC components of the output voltage onto which the AC component of a photodetector 25 is superposed is supplied to a rectifying and smoothing circuit 3 by a capacitor C6, and a rectified voltage Vd is supplied to the inverted input terminal (-) of an inverting amplifier A1 and is compared with a reference voltage VREF1 of the non- inverted input terminal (+). An output voltage V0 of the amplifier A1 drives a transistor TrQ3 to control a supply voltage VB of circuits 1 and 2, and the frequency and the amplitude of the frequency signal applied to the element 23 are controlled automatically to certain values. Meanwhile, only a bias voltage V1 is supplied to the terminal (-) of an inverting amplifier A2 by a coil L4 and is compared with a reference voltage VREF2, and an output voltage VC corresponding to the differential voltage drives a TrQ4, and a power VD is supplied to the cathode of the element 23 to control power automatically. |
| 公开日期 | 1994-12-12 |
| 申请日期 | 1984-10-24 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/68739]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | 日立東部セミコンダクタ株式会社 |
| 推荐引用方式 GB/T 7714 | 高橋 健夫,近藤 隆彦. 発光装置. JP1994101133B2. 1994-12-12. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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