公开(公告)号：US07557348B2

公开(公告)日：2009-07-07

申请号：US11733613

申请日：2007-04-10

Applicant: Jingzhou Xu ,  Xi-Cheng Zhang

Inventor： Jingzhou Xu ,  Xi-Cheng Zhang

IPC: G01J5/02

CPC classification number: G01J3/10 ,  G01J3/42 ,  G01N21/3581

Abstract: A method and system for imaging an object includes transmitting distinguishable electromagnetic waves from a plurality of radiators of an antenna array, wherein each of the distinguishable electromagnetic waves is distinguishable from others by a detector. Each of the radiators transmits radiation comprising a different distinguishable electromagnetic wave. The method also includes imaging at least a portion of the antenna array onto a targeted object, wherein each image area of a plurality of image areas on the targeted object corresponds to an image of a respective radiator of the antenna array, and detecting a plurality of resultant electromagnetic waves, wherein the resultant electromagnetic waves are transmitted, scattered, or reflected by respective image areas on the targeted object in response to each of the respective image areas being illuminated by the radiation transmitted by the respective radiator of the source array.

Abstract translation: 用于成像对象的方法和系统包括从天线阵列的多个辐射器发送可区分的电磁波，其中每个可区分电磁波通过检测器与其他可区别的电磁波区分开。 每个辐射器发射包括不同的可分辨电磁波的辐射。 该方法还包括将天线阵列的至少一部分成像到目标物体上，其中目标物体上的多个图像区域中的每个图像区域对应于天线阵列的相应散热器的图像，并且检测多个 响应于由源阵列的相应散热器发射的辐射照射的每个相应的图像区域，由此产生的电磁波由目标物体上的各个图像区域传播，散射或反射。

公开(公告)号：US20080239317A1

公开(公告)日：2008-10-02

申请号：US12013167

申请日：2008-01-11

Applicant: Brian SCHULKIN ,  Xi-Cheng ZHANG ,  Thomas TONGUE ,  Jingzhou XU ,  Jian CHEN

Inventor： Brian SCHULKIN ,  Xi-Cheng ZHANG ,  Thomas TONGUE ,  Jingzhou XU ,  Jian CHEN

IPC: G01J4/00

CPC classification number: G21K5/00 ,  B33Y80/00 ,  G01J4/00 ,  G01N21/211 ,  G01N21/3581 ,  H01S5/02236 ,  H01S2302/02

Abstract: Methods and apparatus for detecting variations in electromagnetic fields, in particular, terahertz (THz) electromagnetic fields, are provided. The methods and apparatus employ polarization detection devices and controllers to maintain or vary the polarization of modulated signals as desired. The methods and apparatus are provided to characterize electromagnetic fields by directing the electromagnetic field and a probe beam upon an electro-crystal and detecting the modulation of the resulting probe beam. Detection of the modulation of the probe beam is practiced by detecting and comparing the polarization components of the modulated probe beam. Aspects of the invention may be used to analyze or detect explosives, explosive related compounds, and pharmaceuticals, among other substances. A compact apparatus, modular optical devices for use with the apparatus, sample holders, and radiation source mounts are also disclosed.

Abstract translation: 提供了用于检测电磁场，特别是太赫兹（THz）电磁场的变化的方法和装置。 所述方法和装置使用偏振检测装置和控制器来根据需要维持或改变调制信号的极化。 提供的方法和装置用于通过将电磁场和探针光束引导到电晶体上并检测所得到的探针光束的调制来表征电磁场。 通过检测和比较调制探测光束的偏振分量来实现探测光束的调制的检测。 本发明的方面可用于分析或检测爆炸物，爆炸性相关化合物和药物等物质。 还公开了一种紧凑的装置，用于装置，样品架和辐射源底座的模块化光学装置。

公开(公告)号：US20080203306A1

公开(公告)日：2008-08-28

申请号：US11835152

申请日：2007-08-07

Applicant: Xi-Cheng Zhang ,  Jianming Dai ,  Xu Xie

Inventor： Xi-Cheng Zhang ,  Jianming Dai ,  Xu Xie

IPC: G01J5/02 ,  G01J5/00

CPC classification number: G01J3/42 ,  G01J3/443 ,  G01N21/3581 ,  G01N21/718 ,  G01N2021/1761 ,  G01N2021/1795 ,  G01N2201/0697

Abstract: A method of analyzing a remotely-located object includes the step of illuminating at least a portion of a targeted object with electromagnetic radiation to induce a phase transformation in the targeted object, wherein the phase transformation produces an emitter plasma, which emits terahertz radiation. The method also includes the step of ionizing a volume of an ambient gas to produce a sensor plasma by focusing an optical probe beam in the volume and the step of detecting an optical component of resultant radiation produced from an interaction of the focused optical probe beam and the terahertz radiation in the sensor plasma. Detecting an optical component of the resultant radiation emitted by the sensor plasma facilitates detection of a characteristic fingerprint of the targeted object imposed onto the terahertz radiation produced as a result of the induced phase transformation.

Abstract translation: 分析遥远物体的方法包括用电磁辐射照射目标物体的至少一部分以引起目标物体中的相变的步骤，其中相变产生发射太赫兹辐射的发射体等离子体。 该方法还包括使体积的环境气体电离以通过将光学探针束聚焦在体积中来产生传感器等离子体的步骤，以及检测由聚焦的光学探针光束和 传感器等离子体中的太赫兹辐射。 检测由传感器等离子体发射的所得辐射的光学部件有助于检测施加在由感应相变所产生的太赫兹辐射上的目标物体的特征指纹。

公开(公告)号：US20080179526A1

公开(公告)日：2008-07-31

申请号：US11733613

申请日：2007-04-10

Applicant: Jingzhou XU ,  Xi-Cheng Zhang

Inventor： Jingzhou XU ,  Xi-Cheng Zhang

IPC: G01J1/42

CPC classification number: G01J3/10 ,  G01J3/42 ,  G01N21/3581

Abstract: A method and system for imaging an object includes transmitting distinguishable electromagnetic waves from a plurality of radiators of an antenna array, wherein each of the distinguishable electromagnetic waves is distinguishable from others by a detector. Each of the radiators transmits radiation comprising a different distinguishable electromagnetic wave. The method also includes imaging at least a portion of the antenna array onto a targeted object, wherein each image area of a plurality of image areas on the targeted object corresponds to an image of a respective radiator of the antenna array, and detecting a plurality of resultant electromagnetic waves, wherein the resultant electromagnetic waves are transmitted, scattered, or reflected by respective image areas on the targeted object in response to each of the respective image areas being illuminated by the radiation transmitted by the respective radiator of the source array.

Abstract translation: 用于成像对象的方法和系统包括从天线阵列的多个辐射器发送可区分的电磁波，其中每个可区分电磁波通过检测器与其他可区别的电磁波区分开。 每个辐射器发射包括不同的可分辨电磁波的辐射。 该方法还包括将天线阵列的至少一部分成像到目标物体上，其中目标物体上的多个图像区域中的每个图像区域对应于天线阵列的相应散热器的图像，并且检测多个 响应于由源阵列的相应散热器发射的辐射照射的每个相应的图像区域，由此产生的电磁波由目标物体上的各个图像区域传播，散射或反射。

公开(公告)号：US07119339B2

公开(公告)日：2006-10-10

申请号：US10844105

申请日：2004-05-12

Applicant: Bradley Stuart Ferguson ,  Shaohong Wang ,  Xi-Cheng Zhang

Inventor： Bradley Stuart Ferguson ,  Shaohong Wang ,  Xi-Cheng Zhang

IPC: G01J5/28 ,  H01L31/00 ,  G01R31/308 ,  G01N21/17 ,  G01N21/63

CPC classification number: G01N21/3581

Abstract: A method of obtaining a series of images of a three-dimensional object by transmitting pulsed terahertz (THz) radiation through the entire object from a plurality of angles, optically detecting changes in the transmitted THz radiation using pulsed laser radiation, and constructing a plurality of imaged slices of the three-dimensional object using the detected changes in the transmitted THz radiation. The THz radiation is transmitted through the object as a scanning spot. The object is placed within the Rayleigh range of the focused THz beam and a focusing system is used to transfer the imaging plane from adjacent the object to a desired distance away from the object. A related system is also disclosed.

Abstract translation: 一种通过从多个角度通过整个物体传输脉冲太赫兹（THz）辐射而获得三维物体的一系列图像的方法，使用脉冲激光辐射光学地检测所发射的太赫兹辐射的变化，以及构建多个 使用检测到的发射的THz辐射的变化来成像三维物体的切片。 太赫兹辐射作为扫描点透过物体。 该物体被放置在聚焦的太赫兹束的瑞利范围内，并且使用聚焦系统将成像平面从邻近的物体传送到离物体所需的距离。 还公开了相关系统。

公开(公告)号：US20060045807A1

公开(公告)日：2006-03-02

申请号：US10515607

申请日：2003-05-22

Applicant: Xi-Cheng Zhang ,  Samuel Mickan ,  Abdellah Menikh

Inventor： Xi-Cheng Zhang ,  Samuel Mickan ,  Abdellah Menikh

IPC: G01N21/41 ,  G01N33/48

CPC classification number: G01N33/54373 ,  G01N21/3577 ,  G01N21/3586

Abstract: A method for detecting specific associations between a tethered molecule and an untethered target molecule. The method comprises (1) selecting a tethered molecule; (2) alternately impinging THz radiation onto the tethered molecule and onto a sample including the tethered and untethered target molecules; (3) detecting the radiation impinged on the tethered molecule to form a reference signal and the radiation impinged on the sample to form a sample signal; and (4) comparing the reference signal with the sample signal to generate a specimen signal indicative of an association between the selected tethered and target molecules. The method will detect whether a selected tethered molecule and the desired target exhibit any affinity or, in cases where the affinity is known, will detect the presence of the target molecule in a sample. Also provided is an apparatus for detecting specific associations between a tethered molecule and an untethered target molecule.

Abstract translation: 一种用于检测系留分子和无束缚靶分子之间的特异性关联的方法。 该方法包括：（1）选择拴系分子; （2）将THz辐射交替地撞击到束缚分子上，并且包含拴系和无束缚的靶分子的样品; （3）检测入射到束缚分子上的辐射，形成一个参考信号，射入该样本上的辐射，形成一个采样信号; 和（4）将参考信号与采样信号进行比较以产生指示所选择的系留分束和目标分子之间的关联的样本信号。 该方法将检测所选择的束缚分子和所需靶标是否表现出任何亲和力，或者在已知亲和力的情况下将检测样品中目标分子的存在。 还提供了一种用于检测系留分子和无束缚靶分子之间的特异性关联的装置。

公开(公告)号：US20050023470A1

公开(公告)日：2005-02-03

申请号：US10844105

申请日：2004-05-12

Applicant: Bradley Ferguson ,  Shaohong Wang ,  Xi-Cheng Zhang

Inventor： Bradley Ferguson ,  Shaohong Wang ,  Xi-Cheng Zhang

IPC: G01N21/35 ,  G01N21/63

CPC classification number: G01N21/3581

Abstract: A method of obtaining a series of images of a three-dimensional object by transmitting pulsed terahertz (THz) radiation through the entire object from a plurality of angles, optically detecting changes in the transmitted THz radiation using pulsed laser radiation, and constructing a plurality of imaged slices of the three-dimensional object using the detected changes in the transmitted THz radiation. The THz radiation is transmitted through the object as a scanning spot. The object is placed within the Rayleigh range of the focused THz beam and a focusing system is used to transfer the imaging plane from adjacent the object to a desired distance away from the object. A related system is also disclosed.

Abstract translation: 一种通过从多个角度通过整个物体传输脉冲太赫兹（THz）辐射来获得三维物体的一系列图像的方法，利用脉冲激光辐射光学检测所传输的太赫兹辐射的变化，以及构建多个 使用检测到的发射的THz辐射的变化来成像三维物体的切片。 太赫兹辐射作为扫描点透过物体。 该物体被放置在聚焦的太赫兹束的瑞利范围内，并且使用聚焦系统将成像平面从邻近的物体传送到离物体所需的距离。 还公开了相关系统。

公开(公告)号：US08796653B2

公开(公告)日：2014-08-05

申请号：US12886131

申请日：2010-09-20

Applicant: Brian Schulkin ,  Xi-Cheng Zhang ,  Thomas Tongue ,  Jingzhou Xu ,  Jian Chen

Inventor： Brian Schulkin ,  Xi-Cheng Zhang ,  Thomas Tongue ,  Jingzhou Xu ,  Jian Chen

IPC: H01J29/02 ,  H01S5/022

CPC classification number: G21K5/00 ,  B33Y80/00 ,  G01J4/00 ,  G01N21/211 ,  G01N21/3581 ,  H01S5/02236 ,  H01S2302/02

Abstract: Methods and apparatus for detecting variations in electromagnetic fields, in particular, terahertz (THz) electromagnetic fields, are provided. The methods and apparatus employ polarization detection devices and controllers to maintain or vary the polarization of modulated signals as desired. The methods and apparatus are provided to characterize electromagnetic fields by directing the electromagnetic field and a probe beam upon an electro-crystal and detecting the modulation of the resulting probe beam. Detection of the modulation of the probe beam is practiced by detecting and comparing the polarization components of the modulated probe beam. Aspects of the invention may be used to analyze or detect explosives, explosive related compounds, and pharmaceuticals, among other substances. A compact apparatus, modular optical devices for use with the apparatus, sample holders, and radiation source mounts are also disclosed.

Abstract translation: 提供了用于检测电磁场，特别是太赫兹（THz）电磁场的变化的方法和装置。 所述方法和装置使用偏振检测装置和控制器来根据需要维持或改变调制信号的极化。 提供的方法和装置用于通过将电磁场和探针光束引导到电晶体上并检测所得到的探针光束的调制来表征电磁场。 通过检测和比较调制探测光束的偏振分量来实现探测光束的调制的检测。 本发明的方面可用于分析或检测爆炸物，爆炸性相关化合物和药物等物质。 还公开了一种紧凑的装置，用于装置，样品架和辐射源底座的模块化光学装置。

公开(公告)号：US20130153790A1

公开(公告)日：2013-06-20

申请号：US13643871

申请日：2011-04-29

Applicant: Benjamin Clough ,  Jingle Liu ,  Xi-Cheng Zhang

Inventor： Benjamin Clough ,  Jingle Liu ,  Xi-Cheng Zhang

IPC: G01N21/63

CPC classification number: G01N21/63 ,  G01N21/3504 ,  G01N21/3581

Abstract: Methods and systems for detecting radiation for example, terahertz radiation, with the aid of acoustic signal generation and detection include: directing an optical beam into a volume of gas; ionizing at least a portion of the volume of gas with the optical beam to produce a plasma; and detecting an acoustic signal produced from an interaction of a radiation wave with the plasma. The methods and systems are particularly adapted for remote detection of chemicals, biological substances, and explosives, among others. The capability of the methods and systems can be enhanced by employing multi-color laser excitation to produce the plasma and varying the time delay between the multi-color pulses.

Abstract translation: 借助于声信号产生和检测，用于检测辐射的方法和系统，例如太赫兹辐射，包括：将光束引导到一定体积的气体中; 用光束电离至少一部分体积的气体以产生等离子体; 以及检测由辐射波与等离子体的相互作用产生的声信号。 这些方法和系统特别适用于远程检测化学品，生物物质和爆炸物等。 可以通过采用多色激光激发产生等离子体并改变多色脉冲之间的时间延迟来增强方法和系统的能力。

公开(公告)号：US20120049090A1

公开(公告)日：2012-03-01

申请号：US13218993

申请日：2011-08-26

Applicant: Xi-Cheng ZHANG ,  Pengyu HAN ,  Yuting W. CHEN

Inventor： Xi-Cheng ZHANG ,  Pengyu HAN ,  Yuting W. CHEN

IPC: B01J19/12 ,  G02B1/00 ,  B23P11/00 ,  G02B5/00

CPC classification number: G02B1/118 ,  Y10T29/49826

Abstract: A terahertz (THz) anti-reflection device, for example, a broadband tunable THz anti-reflection device, includes a silicon substrate having a plurality of recesses, each of the plurality of recesses having a plurality of cavities of decreasing dimension. The cavities may be nested polygonal cavities, for example, having a square or rectangular cross section. The recesses having the cavities may be positioned at regular periods, for example, periods ranging from 10 μm to 20 μm. The devices may be fabricated by conventional lithographic methods. Also disclosed are methods for modifying terahertz radiation and methods for fabricating anti-reflection devices.

Abstract translation: 太赫兹（THz）抗反射装置，例如宽带可调THz抗反射装置，包括具有多个凹槽的硅基板，多个凹槽中的每一个具有多个尺寸减小的空腔。 空腔可以是嵌套的多边形空腔，例如具有正方形或矩形横截面。 具有空腔的凹部可以以规定的周期定位，例如10μm至20μm的周期。 这些器件可以通过常规的光刻方法制造。 还公开了用于修改太赫兹辐射的方法和用于制造防反射装置的方法。