公开(公告)号：US08780355B2

公开(公告)日：2014-07-15

申请号：US13123938

申请日：2009-09-01

Applicant: Elodie Cansot ,  Emmanuel Christophe ,  Alain Rosak

Inventor： Elodie Cansot ,  Emmanuel Christophe ,  Alain Rosak

IPC: G01B9/02 ,  G01J3/453 ,  G01J3/457

CPC classification number: G01J3/4535 ,  G01J3/453 ,  G01J3/4531 ,  G01J3/457

Abstract: According to a first aspect the invention relates to a reconstruction process of a narrow-band signal acquired by an instrument producing irregular sampling, in which two series of samples are acquired at the same sampling period, the two series being offset relative to one another such that the sampling errors are identical or quasi identical over both series. According to a second aspect, the invention relates to an instrument configured to carry out the process according to the first aspect of the invention.

Abstract translation: 根据第一方面，本发明涉及通过产生不规则采样的仪器获取的窄带信号的重建过程，其中在相同采样周期获取两个系列的样本，两个系列相对于彼此偏移，如 两个系列的采样误差相同或相似。 根据第二方面，本发明涉及一种被配置为执行根据本发明的第一方面的方法的仪器。

公开(公告)号：US08767217B2

公开(公告)日：2014-07-01

申请号：US13194713

申请日：2011-07-29

Applicant: Arsen R. Hajian ,  Bradford B. Behr ,  Jeffrey T. Meade ,  Andrew T. Cenko

Inventor： Arsen R. Hajian ,  Bradford B. Behr ,  Jeffrey T. Meade ,  Andrew T. Cenko

IPC: G01B11/02

CPC classification number: G01J3/4531 ,  G01B9/02028 ,  G01B9/02044 ,  G01B9/02081 ,  G01B9/02091 ,  G01J3/0294

Abstract: An optical coherence tomography (OCT) system comprising: a splitter configured to receive and split an optical source beam generating a reference beam and a sample beam, the sample beam directed at a sample and interacting with the sample to generate a return beam; a delay module configured to receive and introduce an optical delay in the reference beam, to generate a delayed reflected beam configured to interfere with the return beam to generate an interferogram; a spatial filter system capable of filtering randomly scattered light from at least one of the return beam or the interferogram; and a detector array to receive the interferogram for spatial and spectral analysis.

Abstract translation: 一种光学相干断层摄影（OCT）系统，包括：分配器，被配置为接收和分割产生参考光束和样本光束的光源束，所述样本光束指向样本并与样本相互作用以产生返回光束; 延迟模块，被配置为接收和引入参考光束中的光学延迟，以产生被配置为干扰所述返回光束以产生干涉图的延迟反射光束; 空间滤波器系统，其能够从至少一个返回光束或干涉图中随机散射光; 以及用于接收用于空间和光谱分析的干涉图的检测器阵列。

公开(公告)号：US20140021351A1

公开(公告)日：2014-01-23

申请号：US14033114

申请日：2013-09-20

Applicant: Ronald T. Logan ,  Joseph R. Demers

Inventor： Ronald T. Logan ,  Joseph R. Demers

IPC: G01J3/427

CPC classification number: G01J3/427 ,  A61B5/0507 ,  G01J3/10 ,  G01J3/42 ,  G01J3/4531 ,  G01N21/3581 ,  G01N21/3586 ,  G01N21/39

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20130314702A1

公开(公告)日：2013-11-28

申请号：US13955158

申请日：2013-07-31

Applicant: Lauren DeFlores ,  Andrei Tokmakoff

Inventor： Lauren DeFlores ,  Andrei Tokmakoff

IPC: G01J3/42

CPC classification number: G01J3/42 ,  G01J3/2803 ,  G01J3/2823 ,  G01J3/4531 ,  G01N21/35 ,  G01N2021/3595

Abstract: The present invention relates to a system and methods for acquiring two-dimensional Fourier transform (2D FT) spectra. Overlap of a collinear pulse pair and probe induce a molecular response which is collected by spectral dispersion of the signal modulated probe beam. Simultaneous collection of the molecular response, pulse timing and characteristics permit real time phasing and rapid acquisition of spectra. Full spectra are acquired as a function of pulse pair timings and numerically transformed to achieve the full frequency-frequency spectrum. This method demonstrates the ability to acquire information on molecular dynamics, couplings and structure in a simple apparatus. Multi-dimensional methods can be used for diagnostic and analytical measurements in the biological, biomedical, and chemical fields.

Abstract translation: 本发明涉及用于获取二维傅里叶变换（2D FT）光谱的系统和方法。 共线脉冲对和探针的重叠引起通过信号调制探测光束的光谱色散收集的分子响应。 同时收集分子响应，脉冲时序和特征允许实时定相和快速采集光谱。 作为脉冲对定时的函数获取全谱，并进行数值变换以实现全频谱。 这种方法证明了在简单的装置中获取分子动力学，耦合和结构信息的能力。 多维方法可用于生物，生物医学和化学领域的诊断和分析测量。

公开(公告)号：US08570524B2

公开(公告)日：2013-10-29

申请号：US12849046

申请日：2010-08-03

Applicant: Xiaoke Wan ,  Jian Ge

Inventor： Xiaoke Wan ,  Jian Ge

IPC: G01B9/02 ,  G01J3/45

CPC classification number: G01J3/02 ,  G01B9/02051 ,  G01J3/0259 ,  G01J3/28 ,  G01J3/45 ,  G01J3/4531 ,  G01J3/4532 ,  G01J2003/2866

Abstract: Calibration of an arbitrary spectrometer can use a stable monolithic interferometer as a wavelength calibration standard. Light from a polychromatic light source is input to the monolithic interferometer where it undergoes interference based on the optical path difference (OPD) of the interferometer. The resulting wavelength-modulated output beam is analyzed by a reference spectrometer to generate reference data. The output beam from the interferometer can be provided to an arbitrary spectral instrument. Wavelength calibration of the arbitrary spectral instrument may then be performed based on a comparison of the spectral instrument output with the reference data. By appropriate choice of materials for the monolithic interferometer, a highly stable structure can be fabricated that has a wide field and/or is thermally compensated. Because the interferometer is stable, the one-time generated reference data can be used over an extended period of time without re-characterization.

Abstract translation: 任意光谱仪的校准可以使用稳定的单片干涉仪作为波长校准标准。 来自多色光源的光被输入到单片干涉仪，其中它基于干涉仪的光程差（OPD）而受到干扰。 所得到的波长调制输出光束由参考光谱仪分析以产生参考数据。 来自干涉仪的输出光束可以提供给任意的光谱仪器。 然后可以基于光谱仪器输出与参考数据的比较来执行任意光谱仪器的波长校准。 通过适当地选择用于单片干涉仪的材料，可以制造具有宽场和/或热补偿的高度稳定的结构。 因为干涉仪是稳定的，所以一次性生成的参考数据可以在延长的时间段内被使用，而无需重新表征。

公开(公告)号：US08526002B2

公开(公告)日：2013-09-03

申请号：US12676536

申请日：2008-09-08

Applicant: Lauren DeFlores ,  Andrei Tokmakoff

Inventor： Lauren DeFlores ,  Andrei Tokmakoff

IPC: G01B9/02 ,  G01J3/30

CPC classification number: G01J3/42 ,  G01J3/2803 ,  G01J3/2823 ,  G01J3/4531 ,  G01N21/35 ,  G01N2021/3595

Abstract: The present invention relates to a system and methods for acquiring two-dimensional Fourier transform (2D FT) spectra. Overlap of a collinear pulse pair and probe induce a molecular response which is collected by spectral dispersion of the signal modulated probe beam. Simultaneous collection of the molecular response, pulse timing and characteristics permit real time phasing and rapid acquisition of spectra. Full spectra are acquired as a function of pulse pair timings and numerically transformed to achieve the full frequency-frequency spectrum. This method demonstrates the ability to acquire information on molecular dynamics, couplings and structure in a simple apparatus. Multi-dimensional methods can be used for diagnostic and analytical measurements in the biological, biomedical, and chemical fields.

Abstract translation: 本发明涉及用于获取二维傅里叶变换（2D FT）光谱的系统和方法。 共线脉冲对和探针的重叠引起通过信号调制探测光束的光谱色散收集的分子响应。 同时收集分子响应，脉冲时序和特征允许实时定相和快速采集光谱。 作为脉冲对定时的函数获取全谱，并进行数值变换以实现全频谱。 这种方法证明了在简单的装置中获取分子动力学，耦合和结构信息的能力。 多维方法可用于生物，生物医学和化学领域的诊断和分析测量。

公开(公告)号：US20130200263A1

公开(公告)日：2013-08-08

申请号：US13831438

申请日：2013-03-14

Applicant: Ronald T. Logan ,  Joseph R. Demers

Inventor： Ronald T. Logan ,  Joseph R. Demers

IPC: G01J3/427

CPC classification number: G01J3/427 ,  A61B5/0507 ,  G01J3/10 ,  G01J3/42 ,  G01J3/4531 ,  G01N21/3581 ,  G01N21/3586 ,  G01N21/39

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20110267599A1

公开(公告)日：2011-11-03

申请号：US12772822

申请日：2010-05-03

Applicant: David Howard Hurley

Inventor： David Howard Hurley

IPC: G01B9/02 ,  G01J3/00

CPC classification number: G01J3/42 ,  G01B9/02023 ,  G01B9/0207 ,  G01B2290/70 ,  G01J3/02 ,  G01J3/0224 ,  G01J3/4531 ,  G01N21/3581

Abstract: Systems, devices, methods, and computer-readable media relating to terahertz radiation detection are disclosed. A method of detecting terahertz radiation may include transmitting a reference beam and a signal beam through a common-path interferometer. The method may further include transmitting a terahertz beam through a target object. Furthermore, the method may include causing the signal beam and the terahertz beam to simultaneously propagate through an electro-optical element within the common-path interferometer after transmitting the terahertz beam through the target object to induce a phase delay between the signal beam and the reference beam. In addition, the method may include calculating the phase delay and calculating an amplitude of an electric field of the terahertz beam from the phase delay.

Abstract translation: 公开了与太赫兹辐射检测相关的系统，设备，方法和计算机可读介质。 检测太赫兹辐射的方法可以包括通过公共路径干涉仪传输参考光束和信号光束。 该方法还可以包括通过目标物体传输太赫兹束。 此外，该方法可以包括在将太赫兹束穿过目标物体之后，使信号光束和太赫兹光束同时传播通过公共路径干涉仪内的电光元件，以引起信号光束和参考光源之间的相位延迟 光束。 此外，该方法可以包括从相位延迟计算相位延迟并计算太赫兹波束的电场的幅度。

公开(公告)号：US07446876B2

公开(公告)日：2008-11-04

申请号：US11517894

申请日：2006-09-08

Applicant: Dale A. Harrison

Inventor： Dale A. Harrison

IPC: G01N21/55

CPC classification number: G01J3/2803 ,  G01J3/02 ,  G01J3/0208 ,  G01J3/021 ,  G01J3/0232 ,  G01J3/027 ,  G01J3/0286 ,  G01J3/0291 ,  G01J3/08 ,  G01J3/10 ,  G01J3/28 ,  G01J3/2823 ,  G01J3/36 ,  G01J3/42 ,  G01J3/4531 ,  G01N21/211 ,  G01N21/274 ,  G01N21/33 ,  G01N21/47 ,  G01N21/55 ,  G01N21/9501 ,  G01N2021/335

Abstract: A spectroscopy system is provided which is optimized for operation in the VUV region and capable of performing well in the DUV-NIR region. Additionally, the system incorporates an optical module which presents selectable sources and detectors optimized for use in the VUV and DUV-NIR. As well, the optical module provides common delivery and collection optics to enable measurements in both spectral regions to be collected using similar spot properties. The module also provides a means of quickly referencing measured data so as to ensure that highly repeatable results are achieved. The module further provides a controlled environment between the VUV source, sample chamber and VUV detector which acts to limit in a repeatable manner the absorption of VUV photons. The use of broad band data sets which encompass VUV wavelengths, in addition to the DUV-NIR wavelengths enables a greater variety of materials to be meaningfully characterized. Array based detection instrumentation may be exploited to permit the simultaneous collection of larger wavelength regions.

Abstract translation: 提供了一种光谱系统，其被优化用于在VUV区域中的操作并且能够在DUV-NIR区域中表现良好。 此外，该系统还包含一个光学模块，该模块提供可用于VUV和DUV-NIR中优化的可选择的源和检测器。 同样，光学模块提供通用的传送和收集光学器件，以使得能够使用类似的光点特性来收集两个光谱区域中的测量。 该模块还提供了快速参考测量数据的方法，以确保实现高度可重复的结果。 该模块还在VUV源，样品室和VUV检测器之间提供受控的环境，其作用是以可重复的方式限制VUV光子的吸收。 除了DUV-NIR波长之外，使用包含VUV波长的宽带数据集使得可以有意义地表征更多种类的材料。 可以利用基于阵列的检测仪器来允许同时收集更大的波长区域。

公开(公告)号：US20080157750A1

公开(公告)日：2008-07-03

申请号：US11964363

申请日：2007-12-26

Applicant: Yuanjing LI ,  Bing Feng ,  Ziran Zhao ,  Yingxin Wang ,  Dongmei Yu

Inventor： Yuanjing LI ,  Bing Feng ,  Ziran Zhao ,  Yingxin Wang ,  Dongmei Yu

IPC: G01R23/16

CPC classification number: G01J3/42 ,  G01J3/4531 ,  G01N21/3586

Abstract: Disclosed are a method and an apparatus for measuring terahertz time-domain spectrum, which relate to the field of terahertz time-domain spectrum. The method comprises the steps of: generating a first pulse laser beam from a first femtosecond laser device at a preset repetition frequency to generate THz pulses; generating a second pulse laser beam from a second femtosecond laser device at the repetition frequency; measuring electric field intensities of the THz pulses at respective phase differences between the first pulse laser beam and the second pulse laser beam; and obtaining a THz time-domain spectroscopy by performing Fourier transformation of data representative of the electric field intensities. Compared with prior art, THz spectrum measured according to the method and apparatus of present invention has higher spectroscopy resolution and broader detection range, which makes the technology of present invention have stronger capability for discriminating substances.

Abstract translation: 公开了一种用于测量太赫兹时域光谱的方法和装置，其涉及太赫兹时域光谱的领域。 该方法包括以下步骤：以预设的重复频率从第一飞秒激光装置产生第一脉冲激光束以产生THz脉冲; 以重复频率从第二飞秒激光装置产生第二脉冲激光束; 在第一脉冲激光束和第二脉冲激光束之间的相位差测量THz脉冲的电场强度; 并且通过对代表电场强度的数据进行傅里叶变换来获得THz时域光谱。 与现有技术相比，根据本发明的方法和装置测量的太赫兹光谱具有更高的光谱分辨率和更广泛的检测范围，这使得本发明的技术具有更强的辨别物质的能力。