公开(公告)号：US20080157750A1

公开(公告)日：2008-07-03

申请号：US11964363

申请日：2007-12-26

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

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

IPC分类号： G01R23/16

CPC分类号： G01J3/42 ,  G01J3/4531 ,  G01N21/3586

摘要： 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.

摘要翻译： 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。

公开(公告)号：US07675037B2

公开(公告)日：2010-03-09

申请号：US11964363

申请日：2007-12-26

申请人： Yuanjing Li ,  Bing Feng ,  Ziran Zhao ,  Yingxin Wang ,  Dongmei Yu

发明人： Yuanjing Li ,  Bing Feng ,  Ziran Zhao ,  Yingxin Wang ,  Dongmei Yu

IPC分类号： G01J5/02

CPC分类号： G01J3/42 ,  G01J3/4531 ,  G01N21/3586

摘要： 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. THz spectrum measured according to the method and apparatus improves spectroscopy resolution and provides a broader detection range.

摘要翻译： 一种用于测量太赫兹时域光谱的方法和装置，涉及太赫兹时域光谱领域。 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。 根据方法和装置测量的太赫兹光谱提高了光谱分辨率，并提供了更广泛的检测范围。

公开(公告)号：US08039803B2

公开(公告)日：2011-10-18

申请号：US12920161

申请日：2009-02-16

申请人： Kejun Kang ,  Zhiqiang Chen ,  Li Zhang ,  Yingxin Wang ,  Ziran Zhao ,  Yuanjing Li ,  Yinong Liu ,  Zhifeng Huang ,  Yuxiang Xing

发明人： Kejun Kang ,  Zhiqiang Chen ,  Li Zhang ,  Yingxin Wang ,  Ziran Zhao ,  Yuanjing Li ,  Yinong Liu ,  Zhifeng Huang ,  Yuxiang Xing

IPC分类号： G01J5/02

CPC分类号： G01N21/3581

摘要： A method for phase contrast imaging comprises: illuminating an object by terahertz radiation such that the terahertz radiation interacts with the object; illuminating a diffraction grating by the terahertz radiation that has interacted with the object; translating the diffraction grating along the direction of the grating wave vector, to measure, for each of different grating positions, an intensity distribution of the terahertz radiation that has interacted with the object and with the grating in a diffraction field; and retrieving a phase contrast image of the object from the intensity distributions. An apparatus for phase contrast imaging is also provided.

摘要翻译： 一种用于相位对比成像的方法包括：用太赫兹辐射照射物体，使得太赫兹辐射与物体相互作用; 用与物体相互作用的太赫兹辐射照射衍射光栅; 沿着光栅波矢的方向平移衍射光栅，以测量每个不同的光栅位置，在衍射场中与物体和光栅相互作用的太赫兹辐射的强度分布; 以及从所述强度分布中检索所述对象的相位对比图像。 还提供了一种用于相位成像的装置。

公开(公告)号：US20110024624A1

公开(公告)日：2011-02-03

申请号：US12920161

申请日：2009-02-16

申请人： Kejun Kang ,  Zhiqiang Chen ,  Li Zhang ,  Yingxin Wang ,  Ziran Zhao ,  Yuanjing Li ,  Yinong Liu ,  Zhifeng Huang ,  Yuxiang Xing

发明人： Kejun Kang ,  Zhiqiang Chen ,  Li Zhang ,  Yingxin Wang ,  Ziran Zhao ,  Yuanjing Li ,  Yinong Liu ,  Zhifeng Huang ,  Yuxiang Xing

IPC分类号： H01L31/09 ,  H01L31/0232

CPC分类号： G01N21/3581

摘要： A method for phase contrast imaging comprises: illuminating an object by terahertz radiation such that the terahertz radiation interacts with the object; illuminating a diffraction grating by the terahertz radiation that has interacted with the object; translating the diffraction grating along the direction of the grating wave vector, to measure, for each of different grating positions, an intensity distribution of the terahertz radiation that has interacted with the object and with the grating in a diffraction field; and retrieving a phase contrast image of the object from the intensity distributions. An apparatus for phase contrast imaging comprises: a terahertz radiation emitter for generating terahertz radiation, which illuminates an object to interact with the object; a diffraction grating, which is illuminated by the terahertz radiation that has interacted with the object; a terahertz radiation detector for measuring, for each of different grating positions, an intensity distribution of the terahertz radiation that has interacted with the object and with the grating in a diffraction field; and a data collecting and processing system for retrieving a phase contrast image of the object from the intensity distributions.

摘要翻译： 一种用于相位对比成像的方法包括：用太赫兹辐射照射物体，使得太赫兹辐射与物体相互作用; 用与物体相互作用的太赫兹辐射照射衍射光栅; 沿着光栅波矢的方向平移衍射光栅，以测量每个不同的光栅位置，在衍射场中与物体和光栅相互作用的太赫兹辐射的强度分布; 以及从所述强度分布中检索所述对象的相位对比图像。 用于相位对比成像的装置包括：太赫兹辐射发射器，用于产生太赫兹辐射，其照亮物体与物体相互作用; 衍射光栅，其被与物体相互作用的太赫兹辐射照射; 太赫兹辐射检测器，用于针对每个不同的光栅位置，在衍射场中测量与物体和光栅相互作用的太赫兹辐射的强度分布; 以及用于从强度分布中检索对象的相位对比图像的数据收集和处理系统。

公开(公告)号：US08107068B2

公开(公告)日：2012-01-31

申请号：US12492253

申请日：2009-06-26

申请人： Zhiqiang Chen ,  Li Zhang ,  Yuanjing Li ,  Yinong Liu ,  Ziran Zhao ,  Mingliang Li ,  Hongfeng Gai ,  Hongqiu Wang ,  Dongmei Yu

发明人： Zhiqiang Chen ,  Li Zhang ,  Yuanjing Li ,  Yinong Liu ,  Ziran Zhao ,  Mingliang Li ,  Hongfeng Gai ,  Hongqiu Wang ,  Dongmei Yu

IPC分类号： G01J3/44

CPC分类号： G01J3/44 ,  G01J3/0264 ,  G01J3/027 ,  G01J3/0291 ,  G01J3/28 ,  G01N21/65 ,  Y10S707/99933

摘要： The present invention relates to a Raman spectroscopy system that includes a detection center. The detection center includes at least one light source for outputting exciting light which excites a detected object to generate Raman scattered light, and an analysis device for obtaining the Raman spectroscopy of the detected object. The Raman spectroscopy system further includes at least one detection terminal, each of which includes at least one Raman probe that each introduces the exciting light to the detected object, collects the Raman scattered light generated by the detected object, and returns said Raman scattered light to the detection center. The present invention also relates to a method for detecting Raman spectroscopy.

摘要翻译： 本发明涉及一种包括检测中心的拉曼光谱系统。 检测中心包括至少一个用于输出激发被检测物体以产生拉曼散射光的激发光的光源，以及用于获得被检测物体的拉曼光谱的分析装置。 拉曼光谱系统还包括至少一个检测端子，每个检测端子包括至少一个拉曼探针，每个拉曼探头将所激发的光引导到被检测物体，收集被检测物体产生的拉曼散射光，并将所述拉曼散射光返回 检测中心。 本发明还涉及一种用于检测拉曼光谱的方法。

公开(公告)号：US08873042B2

公开(公告)日：2014-10-28

申请号：US13806168

申请日：2010-12-24

申请人： Zhiqiang Chen ,  Li Zhang ,  Yuanjing Li ,  Yinong Liu ,  Ziran Zhao ,  Hongqiu Wang ,  Dongmei Yu ,  Hongfeng Gai ,  Mingliang Li

发明人： Zhiqiang Chen ,  Li Zhang ,  Yuanjing Li ,  Yinong Liu ,  Ziran Zhao ,  Hongqiu Wang ,  Dongmei Yu ,  Hongfeng Gai ,  Mingliang Li

IPC分类号： G01J3/44 ,  G01N21/65 ,  G01J3/28 ,  G01N21/27

CPC分类号： G01N21/65 ,  G01J3/28 ,  G01J3/44 ,  G01J3/4412 ,  G01N21/274 ,  G01N21/276

摘要： A Raman spectrum detection system including a light source for emitting excitation light that excites a detected object to emit Raman light; an external light path system for irradiating light emitted from the light source on the detected object and collecting the Raman light emitted by the detected object; a light detection device for receiving the Raman light collected by the external light path system and detecting the Raman light to obtain spectrum data thereof; a control device for controlling the excitation light source to provide the excitation light, controlling the light detection device to detect the Raman light, receiving the spectrum data output from the light detection device, and analyzing said spectrum data to identify the detected object; and an automatic calibration device for holding the standard sample and for automatically calibrating the system.

摘要翻译： 拉曼光谱检测系统，包括用于发射激发光的光源，激发被检测物体发射拉曼光; 外部光路系统，用于将从光源发射的光照射在检测到的物体上并收集被检测物体发射的拉曼光; 光检测装置，用于接收由外部光路系统收集的拉曼光并检测拉曼光以获得其光谱数据; 用于控制激发光源以提供激发光的控制装置，控制光检测装置检测拉曼光，接收从光检测装置输出的光谱数据，以及分析所述光谱数据以识别被检测物体; 以及用于保持标准样品并用于自动校准系统的自动校准装置。

公开(公告)号：US20130162989A1

公开(公告)日：2013-06-27

申请号：US13806168

申请日：2010-12-24

申请人： Zhiqiang Chen ,  Li Zhang ,  Yuanjing Li ,  Yinong Liu ,  Ziran Zhao ,  Hongqiu Wang ,  Dongmei Yu ,  Hongfeng Gai ,  Mingliang Li

发明人： Zhiqiang Chen ,  Li Zhang ,  Yuanjing Li ,  Yinong Liu ,  Ziran Zhao ,  Hongqiu Wang ,  Dongmei Yu ,  Hongfeng Gai ,  Mingliang Li

IPC分类号： G01J3/44

CPC分类号： G01N21/65 ,  G01J3/28 ,  G01J3/44 ,  G01J3/4412 ,  G01N21/274 ,  G01N21/276

摘要： The present disclosure relates to a Raman spectrum detection system, which comprises a light source for emitting excitation light that excites a detected object to emit Raman light; an external light path system for irradiating light emitted from the light source on the detected object and collecting the Raman light emitted by the detected object; a light detection device for receiving the Raman light collected by the external light path system and detecting said Raman light to obtain spectrum data thereof; a control device for controlling the excitation light source to provide the excitation light, controlling the light detection device to detect the Raman light, receiving the spectrum data output from the light detection device, and analyzing said spectrum data to identify the detected object; and an automatic calibration device for holding the standard sample and for automatically calibrating the system. The present disclosure also relates to a method for detecting an object using the Raman spectrum detection system, and a method for automatically calibrating the Raman spectrum detection system.

摘要翻译： 本公开涉及拉曼光谱检测系统，其包括用于发射激发被检测物体发射拉曼光的激发光的光源; 外部光路系统，用于将从光源发射的光照射在检测到的物体上并收集被检测物体发射的拉曼光; 光检测装置，用于接收由外部光路系统收集的拉曼光并检测所述拉曼光以获得其光谱数据; 用于控制激发光源以提供激发光的控制装置，控制光检测装置检测拉曼光，接收从光检测装置输出的光谱数据，以及分析所述光谱数据以识别被检测物体; 以及用于保持标准样品并用于自动校准系统的自动校准装置。 本公开还涉及使用拉曼光谱检测系统检测物体的方法以及用于自动校准拉曼光谱检测系统的方法。

公开(公告)号：US20080165364A1

公开(公告)日：2008-07-10

申请号：US11966057

申请日：2007-12-28

申请人： Ziran Zhao ,  Zhiqiang Chen ,  Yingxin Wang ,  Bing Feng ,  Li Zhang ,  Zhuoyan Liu ,  Yinpeng Liang

发明人： Ziran Zhao ,  Zhiqiang Chen ,  Yingxin Wang ,  Bing Feng ,  Li Zhang ,  Zhuoyan Liu ,  Yinpeng Liang

IPC分类号： G01B9/02 ,  G01N21/41

CPC分类号： G01N21/3586 ,  G01N21/3577 ,  G01N2201/1293

摘要： The present invention relates to a method for assessing the purity of vegetable oils by means of THz time-domain spectroscopy, comprising the steps of: measuring the THz time-domain spectra of standard vegetable oils to establish a spectral database; measuring the THz time-domain spectrum of vegetable oil to be detected; analyzing the purity of the detected vegetable oil based on the pre-built database. The present invention also relates to an apparatus for assessing purity of vegetable oil by means of THz time-domain spectroscopy, comprising: spectrum measuring device for measuring time-domain waveforms of THz pulses before and after transmitting the vegetable oil held in a container by transmission approach, or directly measuring time-domain waveforms of THz pulses before and after reflecting from the vegetable oil by reflection approach; and data processing device for extracting physical parameters of the vegetable oil in THz region according to the time-domain waveforms. Compared with the prior art, the method according to the present invention is easy, rapid and quantitative.

摘要翻译： 本发明涉及通过THz时域光谱法评估植物油的纯度的方法，包括以下步骤：测量标准植物油的THz时域谱以建立光谱数据库; 测量要检测的植物油的THz时域谱; 基于预建的数据库分析检测出的植物油的纯度。 本发明还涉及通过太赫兹时域光谱法评价植物油的纯度的装置，其特征在于，包括：频谱测量装置，用于测量传输通过传输方式容纳在容器中的植物油之前和之后的THz脉冲的时域波形 或通过反射方法直接测量从植物油反射之前和之后的太赫兹脉冲的时域波形; 以及根据时域波形提取太赫兹区植物油物理参数的数据处理装置。 与现有技术相比，根据本发明的方法容易，快速和定量。

公开(公告)号：US07652769B2

公开(公告)日：2010-01-26

申请号：US11966057

申请日：2007-12-28

申请人： Ziran Zhao ,  Zhiqiang Chen ,  Yingxin Wang ,  Bing Feng ,  Li Zhang ,  Zhuoyan Liu ,  Yinpeng Liang

发明人： Ziran Zhao ,  Zhiqiang Chen ,  Yingxin Wang ,  Bing Feng ,  Li Zhang ,  Zhuoyan Liu ,  Yinpeng Liang

IPC分类号： G01B9/02 ,  G01J3/45

CPC分类号： G01N21/3586 ,  G01N21/3577 ,  G01N2201/1293

摘要： The present invention relates to a method for assessing the purity of vegetable oils by means of THz time-domain spectroscopy, comprising the steps of: measuring the THz time-domain spectra of standard vegetable oils to establish a spectral database; measuring the THz time-domain spectrum of vegetable oil to be detected; analyzing the purity of the detected vegetable oil based on the pre-built database. The present invention also relates to an apparatus for assessing purity of vegetable oil by means of THz time-domain spectroscopy, comprising: spectrum measuring device for measuring time-domain waveforms of THz pulses before and after transmitting the vegetable oil held in a container by transmission approach, or directly measuring time-domain waveforms of THz pulses before and after reflecting from the vegetable oil by reflection approach; and data processing device for extracting physical parameters of the vegetable oil in THz region according to the time-domain waveforms. Compared with the prior art, the method according to the present invention is easy, rapid and quantitative.

摘要翻译： 本发明涉及通过THz时域光谱法评估植物油的纯度的方法，包括以下步骤：测量标准植物油的THz时域谱以建立光谱数据库; 测量要检测的植物油的THz时域谱; 基于预建的数据库分析检测出的植物油的纯度。 本发明还涉及通过太赫兹时域光谱法评价植物油的纯度的装置，其特征在于，包括：频谱测量装置，用于测量传输通过传输方式容纳在容器中的植物油之前和之后的THz脉冲的时域波形 或通过反射方法直接测量从植物油反射之前和之后的太赫兹脉冲的时域波形; 以及根据时域波形提取太赫兹区植物油物理参数的数据处理装置。 与现有技术相比，根据本发明的方法容易，快速和定量。

公开(公告)号：US09194796B2

公开(公告)日：2015-11-24

申请号：US14008903

申请日：2012-04-13

申请人： Ziran Zhao ,  Yingxin Wang ,  Zhiqiang Chen ,  Wanlong Wu

发明人： Ziran Zhao ,  Yingxin Wang ,  Zhiqiang Chen ,  Wanlong Wu

IPC分类号： G01N21/3581 ,  G01V8/00 ,  G01J3/02 ,  G01N21/3563

CPC分类号： G01N21/3581 ,  G01J3/0237 ,  G01N21/3563 ,  G01V8/005

摘要： A method and an apparatus for detecting hidden hazardous substance including the steps of: performing terahertz imaging for a detected object; judging whether there is a suspicious area containing the hidden hazardous substance in a terahertz image of the detected object obtained by the terahertz imaging; performing a multi-wavelength spectroscopy measurement to the suspicious area, determining whether the hazardous substance is contained in the suspicious area according to results of multi-wavelength spectroscopy measurement; and outputting the image of the detected object and hazardous substance detecting result. Also disclosed is an apparatus for implementing the method for detecting the hidden hazardous substance according to the present invention. Determination of the hidden hazardous substance can be performed from the perspectives of shape features and substance composition, thus the accuracy of detection is greatly increased.

摘要翻译： 一种用于检测隐藏的有害物质的方法和装置，包括以下步骤：对检测到的物体执行太赫兹成像; 判断在通过太赫兹成像获得的检测对象的太赫兹图像中是否存在含有隐藏的有害物质的可疑区域; 对可疑区域进行多波长光谱测量，根据多波长光谱测量结果确定有害物质是否包含在可疑区域; 并输出检测对象的图像和有害物质检测结果。 还公开了根据本发明的用于实施隐藏的有害物质检测方法的装置。 可以从形状特征和物质组成的角度来确定隐藏的有害物质，从而大大提高了检测的准确性。