Photosensor
文献类型：专利
| 作者 | KATAGIRI YOSHIMASA; SUZUKI YOSHIO; UKITA HIROO |
| 发表日期 | 1991-12-06 |
| 专利号 | JP1991276008A |
| 著作权人 | NIPPON TELEGR & TELEPH CORP |
| 国家 | 日本 |
| 文献子类 | 发明申请 |
| 其他题名 | Photosensor |
| 英文摘要 | PURPOSE:To largely change an oscillation threshold current to the fine change of the reflectance, etc., of a semiconductor laser and a substance to be measured and to improve sensitivity for detecting a signal by using a quantum well as the active layer of the semiconductor laser in a photosensor in which the substance to be measured is used as the external mirror of the semiconductor laser. CONSTITUTION:The quantum well is used as the active layer of the semiconductor laser 4. By irraditing an optical recording medium 5 with laser light from the semiconductor laser 4, the medium 5 acts as the external mirror for the laser 4 and compound resonance occurs between the laser 4 and the medium 5. Then, the range of normalization current I-Ifh where signal modulation degree M is kept at >=0.9, in the case of the quantum well, becomes 2.6 times as large as that in the case of double heterodyne. Thus, the large change of output is obtained as to a substance which has the minute difference of reflectance or a substance which has fine ruggedness, thereby improving the sensitivity. |
| 公开日期 | 1991-12-06 |
| 申请日期 | 1990-03-27 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/59668]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | NIPPON TELEGR & TELEPH CORP |
| 推荐引用方式 GB/T 7714 | KATAGIRI YOSHIMASA,SUZUKI YOSHIO,UKITA HIROO. Photosensor. JP1991276008A. 1991-12-06. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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