Driving method for multi-beam semiconductor laser for optical disk
文献类型：专利
| 作者 | SUZUKI TOSHIHIRO; ISHII TOMOYUKI |
| 发表日期 | 1990-08-02 |
| 专利号 | JP1990195533A |
| 著作权人 | FUJITSU LTD |
| 国家 | 日本 |
| 文献子类 | 发明申请 |
| 其他题名 | Driving method for multi-beam semiconductor laser for optical disk |
| 英文摘要 | PURPOSE:To simplify and miniaturize an optical system of an optical head for an optical disk by driving a laser element which radiates the light of a shorter wavelength with the larger optical output and radiating the light of a waveform approximate to any laser element. CONSTITUTION:The resonance length of a laser element is decided by a breaking job due to the cleavage and therefore some variance is produced. In other words, the LD-1, LD-2 and LD-3 oscillate with the least wavelength lambda1, the medium wavelength lambda2, and the largest wavelength lambda3 respectively when these LDs are driven by the same optical output, e.g., P In this case, the LD-1 which oscillates a 3-beam semiconductor laser with the wavelength lambda1 is driven with the largest optical output P3. Then the LD-2 which oscillates with the wavelength lambda2 is driven with the medium optical output P2, and the LD-3 which oscillates with the wavelength lambda3 is driven with the least optical output P Thus these three laser elements LD-1 - LD-3 can be oscillated with an approximately equal wavelength lambda3. Thus an optical system is extremely simplified. |
| 公开日期 | 1990-08-02 |
| 申请日期 | 1989-01-24 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/59612]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | FUJITSU LTD |
| 推荐引用方式 GB/T 7714 | SUZUKI TOSHIHIRO,ISHII TOMOYUKI. Driving method for multi-beam semiconductor laser for optical disk. JP1990195533A. 1990-08-02. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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