Semiconductor laser-based spectrometer

OPT OpenIR > 半导体激光器专利数据库

	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.