Terahertz Frequency Domain Spectrometer with Integrated Dual Laser Module

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	Terahertz Frequency Domain Spectrometer with Integrated Dual Laser Module
其他题名	Terahertz Frequency Domain Spectrometer with Integrated Dual Laser Module
	LOGAN, JR., RONALD T.; DEMERS, JOSEPH R.; KASPER, BRYON L.
	2010-11-04
专利权人	DEMERS, JOSEPH R.
公开日期	2010-11-04
授权国家	美国
专利类型	发明申请
摘要	An apparatus for analyzing, identifying or imaging an target including an integrated dual laser module coupled to a pair of photoconductive switches to produce cw signals in the range of frequencies from 100 GHz to over 2 THz focused on and transmitted through or reflected from the target; and a detector for acquiring spectral information from signals received from the target and using a multi-spectral homodyne process to generate an electrical signal representative of some characteristics of the target with resolution less than 250 MHz. The photoconductive switches are activated by laser beams from the dual laser module. The lasers in the module are tuned to different frequencies and have two distinct low frequency identification tones respectively that are used in conjunction with a stable optical filter element to permit precise determination of the offset frequency of the lasers.
其他摘要	一种用于分析，识别或成像目标的装置，包括耦合到一对光电导开关的集成双激光器模块，以产生从100GHz到超过2THz的频率范围内的cw信号，该信号聚焦在目标上并通过目标发射或从目标反射;检测器，用于从目标接收的信号中获取光谱信息，并使用多光谱零差过程产生表示分辨率小于250MHz的目标的一些特征的电信号。光电导开关由来自双激光模块的激光束激活。模块中的激光器被调谐到不同的频率并且分别具有两个不同的低频识别音调，其与稳定的光学滤波器元件结合使用以允许精确确定激光器的偏移频率。
主权项	A laser module comprising: a housing; a first laser assembly disposed in said housing including a first laser for generating a first laser beam; a second laser assembly disposed in said housing including a second laser for generating a second laser beam; a beam splitter disposed in said housing in the path of said first and second beams for combining said beams into third and fourth optical beams; a second beam splitter disposed in said housing in the path of said third beam and producing a fifth and sixth; and a first window in said housing in the path of said fifth beam for permitting said fifth beam to exit the housing.
申请日期	2008-04-04
专利号	US20100277726A1
专利状态	失效
申请号	US12/062772
公开（公告）号	US20100277726A1
IPC 分类号	G01J3/28 \| H01S3/08 \| H01S3/04 \| H01S3/10
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/181661/54016
专题	半导体激光器专利数据库
作者单位	DEMERS, JOSEPH R.
推荐引用方式 GB/T 7714	LOGAN, JR., RONALD T.,DEMERS, JOSEPH R.,KASPER, BRYON L.. Terahertz Frequency Domain Spectrometer with Integrated Dual Laser Module. US20100277726A1[P]. 2010-11-04.