Xi'an Institute of Optics and Precision Mechanics,CAS
External-cavity tunable wavelength light source using semiconductor laser having phase adjustment area | |
其他题名 | External-cavity tunable wavelength light source using semiconductor laser having phase adjustment area |
OHTATEME, HIROAKI; ENDOH, HIROAKI; GOTO, HIROSHI; IKEUCHI, KO; ASAI, AKIHIKO | |
1996-11-26 | |
专利权人 | ANRITSU CORPORATION |
公开日期 | 1996-11-26 |
授权国家 | 美国 |
专利类型 | 授权发明 |
摘要 | In an external-cavity tunable wavelength light source using a semiconductor laser (LD), an oscillation wavelength is tuned by simultaneously changing a current to be injected to the phase adjustment area of the LD and the rotation angle of a diffraction grating while holding the same external cavity longitudinal mode. A light beam emitted from the AR-coated end face of the LD having the phase adjustment area is collimated by a lens and incident on the diffraction grating. Only a light component having a specific wavelength selected upon spectral dispersion is reflected by the diffraction grating and returns to the LD. With this operation, an external cavity (effective cavity length K) is formed between the LD and the diffraction grating, thereby performing laser oscillation at a wavelength determined by an external cavity longitudinal mode and the cavity loss of the diffraction grating. The effective cavity length K can be changed in accordance with the current to be injected to the phase adjustment area. A current injection unit injects the current to the phase adjustment area. An oscillation wavelength control unit controls the injection current output from the current injection unit and the rotation angle of the diffraction grating. |
其他摘要 | 在使用半导体激光器(LD)的外腔可调波长光源中,通过同时改变要注入LD的相位调整区域的电流和衍射光栅的旋转角度来调谐振荡波长。外腔纵模。从具有相位调整区域的LD的涂有AR的端面发射的光束被透镜准直并入射在衍射光栅上。只有在光谱色散时选择的具有特定波长的光分量被衍射光栅反射并返回到LD。通过该操作,在LD和衍射光栅之间形成外腔(有效腔长度K),从而在由外腔纵模和衍射光栅的腔损耗确定的波长下进行激光振荡。可以根据要注入相位调整区域的电流来改变有效腔长度K.电流注入单元将电流注入相位调整区域。振荡波长控制单元控制从电流注入单元输出的注入电流和衍射光栅的旋转角度。 |
授权日期 | 1996-11-26 |
申请日期 | 1995-06-05 |
专利号 | US5579327 |
专利状态 | 失效 |
申请号 | US08/465063 |
公开(公告)号 | US5579327 |
IPC 分类号 | H01S5/14 | H01S5/00 | H01S5/0625 | H01S3/10 |
专利代理人 | - |
代理机构 | FRISHAUF,HOLTZ,GOODMAN,LANGER & CHICK |
文献类型 | 专利 |
条目标识符 | http://ir.opt.ac.cn/handle/181661/42195 |
专题 | 半导体激光器专利数据库 |
作者单位 | ANRITSU CORPORATION |
推荐引用方式 GB/T 7714 | OHTATEME, HIROAKI,ENDOH, HIROAKI,GOTO, HIROSHI,et al. External-cavity tunable wavelength light source using semiconductor laser having phase adjustment area. US5579327[P]. 1996-11-26. |
条目包含的文件 | ||||||
文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
US5579327.PDF(356KB) | 专利 | 开放获取 | CC BY-NC-SA | 请求全文 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论