Xi'an Institute of Optics and Precision Mechanics,CAS
Semiconductor laser-based spectrometer | |
其他题名 | Semiconductor laser-based spectrometer |
JAYARAMAN, VIJAYSEKHAR | |
2006-12-14 | |
专利权人 | JAYARAMAN VIJAYSEKHAR |
公开日期 | 2006-12-14 |
授权国家 | 美国 |
专利类型 | 发明申请 |
摘要 | A semiconductor laser-based spectrometer according to the present invention includes a plurality of semiconductor lasers comprising a plurality of semiconductor gain medium compositions directly coupled to a large-core multi-mode fiber with no intervening optics. An output radiation from the multi-mode fiber is tunable by switching the drive current amongst the lasers, and by thermal tuning of each laser in the array. In combination with presentation to a sample, and means for detection of a diffuse reflectance or transmittance, this assembly functions as a compact, high signal to noise ratio, fast measurement spectrometer. In one preferred embodiment of this invention the plurality of semiconductor lasers consists of Fabry-Perot edge-emitting lasers arranged around the perimeter of a cylindrical submount with a substantially circular cross-section. In another preferred embodiment a linear array of Fabry-Perot edge-emitting lasers is directly coupled to a multi-mode fiber. In still another preferred embodiment, a two-dimensional array of vertical cavity surface-emitting lasers is directly coupled to a multi-mode optical fiber. |
其他摘要 | 根据本发明的基于半导体激光器的光谱仪包括多个半导体激光器,其包括多个半导体增益介质组合物,其直接耦合到大芯多模光纤而没有中间光学器件。通过在激光器之间切换驱动电流,并通过阵列中每个激光器的热调谐,可以调节来自多模光纤的输出辐射。结合对样品的呈现,以及用于检测漫反射或透射率的装置,该组件用作紧凑的高信噪比,快速测量光谱仪。在本发明的一个优选实施例中,多个半导体激光器由法布里 - 珀罗边缘发射激光器组成,该激光器围绕圆柱形基座的周边布置,具有基本上圆形的横截面。在另一个优选实施例中,法布里 - 珀罗边缘发射激光器的线性阵列直接耦合到多模光纤。在另一个优选实施例中,垂直腔表面发射激光器的二维阵列直接耦合到多模光纤。 |
主权项 | A tunable radiation source comprising a plurality of semiconductor lasers comprising a plurality of semiconductor gain medium compositions, operative to emit a plurality of radiation components having a plurality of wavelengths wherein each of said plurality of radiation components is directly coupled into one common multi-mode optical fiber with no optical components disposed between said plurality of semiconductor lasers and said multi-mode optical fiber, and means for directing electrical power to each one of said plurality of semiconductor lasers. |
申请日期 | 2006-06-06 |
专利号 | US20060280216A1 |
专利状态 | 失效 |
申请号 | US11/447655 |
公开(公告)号 | US20060280216A1 |
IPC 分类号 | H01S5/00 |
专利代理人 | - |
代理机构 | - |
文献类型 | 专利 |
条目标识符 | http://ir.opt.ac.cn/handle/181661/51533 |
专题 | 半导体激光器专利数据库 |
作者单位 | JAYARAMAN VIJAYSEKHAR |
推荐引用方式 GB/T 7714 | JAYARAMAN, VIJAYSEKHAR. Semiconductor laser-based spectrometer. US20060280216A1[P]. 2006-12-14. |
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