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1. 发明授权

US07936453B2 Terahertz frequency domain spectrometer with integrated dual laser module 有权
标题翻译：具有集成双激光模块的太赫兹频域光谱仪
公开(公告)号：US07936453B2
公开(公告)日：2011-05-03
申请号：US12062772
申请日：2008-04-04
申请人： Ronald T. Logan, Jr. , Joseph R. Demers , Bryon L. Kasper
发明人： Ronald T. Logan, Jr. , Joseph R. Demers , Bryon L. Kasper
IPC分类号： G01N21/21
CPC分类号： G01J3/42 , G01J3/10 , G01N21/3581
摘要： An apparatus for analyzing, identifying or imaging a 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.
摘要翻译：一种用于分析，识别或成像目标的装置，所述目标包括耦合到一对光电导开关的集成双激光模块，以产生在从100GHz到超过2THz的频率范围内的CW信号，其聚焦并经由目标传送或反射; 以及检测器，用于从从目标接收的信号中获取光谱信息，并使用多光谱零差处理来产生表示具有小于250MHz的分辨率的目标的某些特性的电信号。光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，并且具有分别与稳定的光学滤波器元件结合使用的两个不同的低频识别音，以允许精确地确定激光器的偏移频率。

2. 发明授权

US09029775B2 Terahertz frequency domain spectrometer with phase modulation of source laser beam 有权
标题翻译：太赫兹频域光谱仪，源激光束相位调制
公开(公告)号：US09029775B2
公开(公告)日：2015-05-12
申请号：US13565021
申请日：2012-08-02
申请人： Joseph R. Demers , Ronald T. Logan, Jr.
发明人： Joseph R. Demers , Ronald T. Logan, Jr.
IPC分类号： G01N21/35 , G01J3/10 , G01J3/42 , G01J3/453 , G01N21/3581 , G01N21/39 , G01N21/3586
CPC分类号： G01J3/10 , G01J3/42 , G01J3/4531 , G01N21/3581 , G01N21/3586 , G01N21/39
摘要： An apparatus for analyzing, identifying or imaging an target including first and second laser beams coupled to a pair of photoconductive switches to produce CW signals in one or more bands in a range of frequencies greater than 100 GHz 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 heterodyne process to generate an electrical signal representative of some characteristics of the target. The lasers are tuned to different frequencies and a phase modulator in the path of one laser beam allows the constructive or destructive interference of the signals on the detector as the laser beams are swept in frequency to be adjusted to achieve greater resolution in one or more selected frequency bands.
摘要翻译：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第一和第二激光束，以在大于100GHz的频率的范围内的一个或多个频带中产生CW信号，该信号聚焦并透过或反射目标; 以及检测器，用于从从目标接收的信号中获取光谱信息，并使用多光谱外差处理产生表示目标的某些特性的电信号。将激光器调谐到不同的频率，并且在一个激光束的路径中的相位调制器允许在检测器上的信号的建构性或相消干涉，因为激光束被扫频以被调整以在一个或多个选定的频带。

3. 发明授权

US08829440B2 Terahertz frequency domain spectrometer with discrete coarse and fine tuning 有权
标题翻译：太赫兹频域光谱仪，具有离散的粗调和微调
公开(公告)号：US08829440B2
公开(公告)日：2014-09-09
申请号：US13831438
申请日：2013-03-14
申请人： Ronald T. Logan, Jr. , Joseph R. Demers
发明人： Ronald T. Logan, Jr. , Joseph R. Demers
IPC分类号： G01N21/35 , A61B5/05
CPC分类号： G01J3/427 , A61B5/0507 , G01J3/10 , G01J3/42 , G01J3/4531 , G01N21/3581 , G01N21/3586 , G01N21/39
摘要： An apparatus for analyzing, identifying or imaging an target including first and second laser beams coupled to a pair of photoconductive switches to produce CW signals in one or more bands in a range of frequencies greater than 100 GHz 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 heterodyne process to generate an electrical signal representative of some characteristics of the target. The lasers are tuned to different frequencies and a frequency shifter in the path of one laser beam allows the terahertz beam to be finely adjusted in one or more selected frequency bands.
摘要翻译：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第一和第二激光束，以在大于100GHz的频率的范围内的一个或多个频带中产生CW信号，该信号集中于并经由目标; 以及检测器，用于从从目标接收的信号中获取光谱信息，并使用多光谱外差处理产生表示目标的某些特性的电信号。将激光器调谐到不同的频率，并且在一个激光束的路径中的频移器允许在一个或多个所选频带中微调太赫兹波束。

4. 发明授权

US07746476B2 Fiber optic gyroscope 有权
标题翻译：光纤陀螺仪
公开(公告)号：US07746476B2
公开(公告)日：2010-06-29
申请号：US11776452
申请日：2007-07-11
申请人： Joseph R. Demers , Ka Kha Wong , Ronald T. Logan, Jr.
发明人： Joseph R. Demers , Ka Kha Wong , Ronald T. Logan, Jr.
IPC分类号： G01C19/72
CPC分类号： G01C19/728 , G01C19/725
摘要： A fiber optic gyroscope including an optical circulator in the path of said first and second beams for providing polarized first and second beams of identical polarization. A phase modulator couples the first and second beams to the first and second end respectively of the fiber loop, and couples for receiving the return first and second beams from the second and first ends respectively of the fiber loop. First and second photodiodes are coupled to the optical circulator for receiving the optical signal from the first and second return beams.
摘要翻译：一种光纤陀螺仪，包括在所述第一和第二光束的路径中的光循环器，用于提供具有相同极化的偏振的第一和第二光束。相位调制器将第一和第二光束分别耦合到光纤回路的第一和第二端，并且耦合用于从光纤回路的第二端和第一端分别接收返回的第一和第二光束。第一和第二光电二极管被耦合到光循环器，用于从第一和第二返回光束接收光信号。

5. 发明授权

US07075028B2 Sub-micron adjustable mount for supporting a component and method 有权
公开(公告)号：US07075028B2
公开(公告)日：2006-07-11
申请号：US10394326
申请日：2003-03-20
申请人： Joseph R. Demers , Nathan G. Woodard , Eric C. Johnson , Chien-Chung Chen , Ronald T. Logan, Jr.
发明人： Joseph R. Demers , Nathan G. Woodard , Eric C. Johnson , Chien-Chung Chen , Ronald T. Logan, Jr.
IPC分类号： B23K11/00
CPC分类号： G02B7/00
摘要： Attaching an attachment surface of an electrically conductive workpiece to an electrically conductive support surface is described. In one aspect, a biasing force is distributed at least partially around a weld region of the workpiece to urge the attachment surface of the workpiece against the support surface in a way which at least resists welding induced movement of the workpiece relative to the support arrangement. An electrode arrangement, having an electrode tip, contacts the workpiece to provide for substantially compliant movement of the electrode tip against the weld region in directions that are parallel to the support surface. In another aspect, a combined manipulation/welding arrangement is supported for controlled movement with a free end configured for engaging the workpiece to bias the workpiece against the support surface to manipulate the workpiece against the surface and to conduct an electrical current, while holding the workpiece, for welding to the support surface.

6. 发明授权

US09052238B2 Terahertz frequency domain spectrometer with heterodyne downconversion 有权
标题翻译：太赫兹频域光谱仪与外差下变频
公开(公告)号：US09052238B2
公开(公告)日：2015-06-09
申请号：US14033114
申请日：2013-09-20
申请人： Ronald T. Logan, Jr. , Joseph R. Demers
发明人： Ronald T. Logan, Jr. , Joseph R. Demers
IPC分类号： G01N21/35 , G01J3/427 , G01J3/10 , G01J3/42 , G01J3/453 , G01N21/3581 , G01N21/39
CPC分类号： G01J3/427 , A61B5/0507 , G01J3/10 , G01J3/42 , G01J3/4531 , G01N21/3581 , G01N21/3586 , G01N21/39
摘要： An apparatus for analyzing, identifying or imaging an target including first and second laser beams coupled to a pair of photoconductive switches to produce CW signals in one or more bands in a range of frequencies greater than 100 GHz 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 heterodyne process to generate an electrical signal representative of some characteristics of the target. The lasers are tuned to different frequencies and a frequency shifter in the path of one laser beam allows the terahertz beam to be finely adjusted in one or more selected frequency bands.
摘要翻译：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第一和第二激光束，以在大于100GHz的频率的范围内的一个或多个频带中产生CW信号，该信号集中于并经由目标; 以及检测器，用于从从目标接收的信号中获取光谱信息，并使用多光谱外差处理产生表示目标的某些特性的电信号。将激光器调谐到不同的频率，并且在一个激光束的路径中的频移器允许在一个或多个所选频带中微调太赫兹波束。

7. 发明授权

US08716666B1 Method of detecting contaminant materials in food products 失效
标题翻译：食品中污染物质检测方法
公开(公告)号：US08716666B1
公开(公告)日：2014-05-06
申请号：US12813359
申请日：2010-06-10
申请人： Joseph R. Demers , Ronald T. Logan, Jr.
发明人： Joseph R. Demers , Ronald T. Logan, Jr.
IPC分类号： G01J5/02
CPC分类号： G01J3/42 , G01J3/0208 , G01J3/10 , G01N21/3581 , G01N21/94 , G01N33/04
摘要： Disclosed herein is a method of detecting a contaminant material in a food sample. The method includes irradiating a food sample with a beam of electromagnetic radiation, the beam having a plurality of frequencies in the range of about 100 GHz to about 2 THz; detecting radiation transmitted and/or reflected from the food sample; and, analyzing the detected radiation to determine the presence of contaminant material. The contaminant material may be melamine, cyanuric acid, ammeline, or ammelide.
摘要翻译：本文公开了一种检测食品样品中的污染物质的方法。该方法包括用电磁辐射束照射食物样品，该束具有在约100GHz至约2THz范围内的多个频率; 检测从食物样品发射和/或反射的辐射; 并且分析检测到的辐射以确定污染物质的存在。污染物质可以是三聚氰胺，氰尿酸，ammeline或ammelide。

8. 发明授权

US08604433B2 Terahertz frequency domain spectrometer with frequency shifting of source laser beam 有权
标题翻译：太赫兹频域光谱仪，源激光束频移
公开(公告)号：US08604433B2
公开(公告)日：2013-12-10
申请号：US12861651
申请日：2010-08-23
申请人： Ronald T. Logan, Jr. , Joseph R. Demers
发明人： Ronald T. Logan, Jr. , Joseph R. Demers
IPC分类号： G01T1/17 , G01J5/20 , H04N5/33
CPC分类号： G01J3/427 , A61B5/0507 , G01J3/10 , G01J3/42 , G01J3/4531 , G01N21/3581 , G01N21/3586 , G01N21/39
摘要： An apparatus for analyzing, identifying or imaging an target including first and second laser beams coupled to a pair of photoconductive switches to produce CW signals in one or more bands in a range of frequencies greater than 100 GHz 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 heterodyne process to generate an electrical signal representative of some characteristics of the target. The lasers are tuned to different frequencies and a frequency shifter in the path of one laser beam allows the terahertz beam to be finely adjusted in one or more selected frequency bands.
摘要翻译：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第一和第二激光束，以在大于100GHz的频率的范围内的一个或多个频带中产生CW信号，该信号集中于并经由目标; 以及检测器，用于从从目标接收的信号中获取光谱信息，并使用多光谱外差处理产生表示目标的某些特性的电信号。将激光器调谐到不同的频率，并且在一个激光束的路径中的频移器允许在一个或多个所选频带中微调太赫兹波束。

9. 发明授权

US08193503B2 Method of detecting organic materials using terahertz spectroscopy 有权
标题翻译：使用太赫兹光谱检测有机材料的方法
公开(公告)号：US08193503B2
公开(公告)日：2012-06-05
申请号：US12634422
申请日：2009-12-09
申请人： Joseph R. Demers , Ronald T. Logan, Jr.
发明人： Joseph R. Demers , Ronald T. Logan, Jr.
IPC分类号： G01J5/02
CPC分类号： G01N21/3586 , G01N21/3563
摘要： Disclosed herein are methods of detecting organic materials, and more particularly, methods of detecting organic materials using terahertz spectroscopy. The method of detecting organic material using terahertz spectroscopy includes suspending organic material in a medium to form a sample; irradiating the sample with an illumination beam of electromagnetic radiation, the illumination beam having a plurality of frequencies in the range of about 100 GHz to about 2 THz; detecting radiation transmitted through and/or reflected from the sample; and, analyzing the detected radiation to identify the organic material, wherein the medium is selected from the group consisting of agar, guar gum, gellan gum, carrageenan, xantham gum, fibrous sodium pectate, and other agar substitutes.
摘要翻译：本文公开了检测有机材料的方法，更具体地，使用太赫兹光谱法检测有机材料的方法。使用太赫兹光谱检测有机材料的方法包括将有机材料悬浮在介质中以形成样品; 用电磁辐射的照明光照射样品，该照明光束具有约100GHz至约2THz范围内的多个频率; 检测通过和/或从样品反射的辐射; 并且分析所检测的辐射以鉴定有机材料，其中所述培养基选自琼脂，瓜尔胶，结冷胶，角叉菜胶，黄芩胶，纤维状果胶酸钠等琼脂替代物。

10. 发明授权

US07781736B2 Terahertz frequency domain spectrometer with controllable phase shift 有权
标题翻译：太赫兹频域光谱仪具有可控相移
公开(公告)号：US07781736B2
公开(公告)日：2010-08-24
申请号：US12465219
申请日：2009-05-13
申请人： Ronald T. Logan, Jr. , Joseph R. Demers
发明人： Ronald T. Logan, Jr. , Joseph R. Demers
IPC分类号： G01N21/21 , G01N21/25 , G01J5/02
CPC分类号： G01J3/42 , G01J3/10 , G01J3/4531 , G01N21/3581
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 a phase shifter in the path of one beam allows the beams to have an adjustable phase difference.
摘要翻译：一种用于分析，识别或成像目标的装置，所述目标包括耦合到一对光电导开关的集成双激光模块，以产生聚焦在目标上并从所述目标传送或反射的从100GHz到超过2Hz的频率范围内的cw信号; 以及检测器，用于从从目标接收的信号中获取光谱信息，并使用多光谱零差处理来产生表示具有小于250MHz的分辨率的目标的某些特性的电信号。光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，并且在一个光束的路径中的移相器允许光束具有可调节的相位差。

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