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    Methods and systems for the enhancement of terahertz wave generation for analyzing a remotely-located object
    1.
    发明授权
    Methods and systems for the enhancement of terahertz wave generation for analyzing a remotely-located object 有权
    用于增强太赫兹波生成的方法和系统，用于分析远程位置的物体

    公开(公告)号：US07595491B2

    公开(公告)日：2009-09-29

    申请号：US11756230

    申请日：2007-05-31

    申请人： Xi-Cheng Zhang ,  Jianming Dai ,  Xu Xie

    发明人： Xi-Cheng Zhang ,  Jianming Dai ,  Xu Xie

    IPC分类号： G01N21/17

    CPC分类号： G01N21/3581 ,  G01N21/3563 ,  G01N21/636 ,  G01N2021/1793

    摘要： A method for generating terahertz radiation includes inducing a background plasma in a volume of a gas by focusing a first optical beam in the volume, and generating pulsed terahertz radiation with enhanced generation efficiency by focusing a second time-delayed optical beam in the background plasma. The method may be implemented in a system for detecting and analyzing a remotely-located object.

    摘要翻译： 一种用于产生太赫兹辐射的方法包括通过将第一光束聚焦在体积中来引入一定体积的气体中的背景等离子体，以及通过将第二时间延迟的光束聚焦在背景等离子体中来产生具有增强的发生效率的脉冲太赫兹辐射。 该方法可以在用于检测和分析位于远程的对象的系统中实现。

    METHOD AND SYSTEM FOR PLASMA-INDUCED TERAHERTZ SPECTROSCOPY
    2.
    发明申请
    METHOD AND SYSTEM FOR PLASMA-INDUCED TERAHERTZ SPECTROSCOPY 有权
    用于等离子体诱导的TERAHERTZ光谱的方法和系统

    公开(公告)号：US20080203306A1

    公开(公告)日：2008-08-28

    申请号：US11835152

    申请日：2007-08-07

    申请人： Xi-Cheng Zhang ,  Jianming Dai ,  Xu Xie

    发明人： Xi-Cheng Zhang ,  Jianming Dai ,  Xu Xie

    IPC分类号： G01J5/02 ,  G01J5/00

    CPC分类号： G01J3/42 ,  G01J3/443 ,  G01N21/3581 ,  G01N21/718 ,  G01N2021/1761 ,  G01N2021/1795 ,  G01N2201/0697

    摘要： 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.

    摘要翻译： 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。

    Methods and systems for generating amplified terahertz radiation for analyzing remotely-located objects
    4.
    发明授权
    Methods and systems for generating amplified terahertz radiation for analyzing remotely-located objects 有权
    用于生成放大太赫兹辐射的方法和系统，用于分析远程位置的物体

    公开(公告)号：US07718969B2

    公开(公告)日：2010-05-18

    申请号：US11756243

    申请日：2007-05-31

    申请人： Xi-Cheng Zhang ,  Jianming Dai ,  Xu Xie

    发明人： Xi-Cheng Zhang ,  Jianming Dai ,  Xu Xie

    IPC分类号： G01N21/35

    CPC分类号： G01N21/3581 ,  G01N21/3563 ,  G01N21/636 ,  G01S7/4802 ,  G01S13/887 ,  G01S17/026

    摘要： A method for generating amplified terahertz radiation includes inducing a first volume of a gas to produce a seed plasma and emit pulsed seed terahertz radiation by focusing an optical seed beam in the first volume. The seed terahertz radiation is then amplified by focusing an optical gain beam to produce a gain plasma in a second volume overlapping with the pulsed seed terahertz radiation remote from the seed plasma. The method may be implemented in a system for detecting and analyzing a remotely-located object such as an explosive material, a biological agent, and a chemical agent.

    摘要翻译： 用于产生放大的太赫兹辐射的方法包括：通过将光学种子束聚焦在第一体积中来诱导第一体积的气体以产生种子等离子体并发射脉冲种子太赫兹辐射。 然后通过聚焦光学增益束来放大种子太赫兹辐射，以产生与远离种子等离子体的脉冲种子太赫兹辐射重叠的第二体积中的增益等离子体。 该方法可以在用于检测和分析诸如爆炸物质，生物制剂和化学试剂的远程定位物体的系统中实现。

    Method of analyzing a remotely-located object utilizing an optical technique to detect terahertz radiation
    6.
    发明授权
    Method of analyzing a remotely-located object utilizing an optical technique to detect terahertz radiation 有权
    利用光学技术分析位于遥远的物体以检测太赫兹辐射的方法

    公开(公告)号：US07531802B2

    公开(公告)日：2009-05-12

    申请号：US11610824

    申请日：2006-12-14

    申请人： Xi-Cheng Zhang ,  Jianming Dai ,  Xu Xie

    发明人： Xi-Cheng Zhang ,  Jianming Dai ,  Xu Xie

    IPC分类号： G01N21/35

    CPC分类号： G01V8/005 ,  G01J3/02 ,  G01J3/0243 ,  G01J3/42 ,  G01N21/3563 ,  G01N21/3581 ,  G01N21/636 ,  G01S7/4802 ,  G01S13/887 ,  G01S17/026 ,  G02F1/353 ,  G02F2203/13

    摘要： A method of analyzing a remotely-located object includes the steps of inducing a volume of an ionized ambient gas to emit pulsed terahertz radiation directed toward a targeted object by focusing an optical pump beam in the volume and ionizing another volume of the ambient gas to produce a sensor plasma by focusing an optical probe beam in the other volume of ambient gas. The interaction, in the sensor plasma, of the focused optical probe beam and an incident terahertz wave, which is produced by the targeted object reflecting, scattering, or transmitting the pulsed terahertz radiation, produces a resultant radiation. Detecting an optical component of the resultant radiation emitted by the sensor plasma facilitates detection of a signature of the targeted object imposed onto the incident terahertz radiation.

    摘要翻译： 分析远程物体的方法包括以下步骤：通过将光泵浦光束聚焦在体积中并使另一体积的环境气体电离以产生电离环境气体的体积，以发射朝向目标物体的脉冲太赫兹辐射 通过将光学探针光束聚焦在另一体积的环境气体中的传感器等离子体。 在传感器等离子体中，由目标物体反射，散射或传输脉冲太赫兹辐射产生的聚焦光学探针光束和入射的太赫兹波的相互作用产生合成的辐射。 检测由传感器等离子体发射的辐射的光学部件有助于检测施加在入射的太赫兹辐射上的目标物体的签名。

    METHOD AND SYSTEM FOR PLASMA-INDUCED TERAHERTZ SPECTROSCOPY
    8.
    发明申请
    METHOD AND SYSTEM FOR PLASMA-INDUCED TERAHERTZ SPECTROSCOPY 有权
    用于等离子体诱导的TERAHERTZ光谱的方法和系统

    公开(公告)号：US20100277718A1

    公开(公告)日：2010-11-04

    申请号：US12634282

    申请日：2009-12-09

    申请人： Xi-Cheng Zhang ,  Jianming Dai ,  Xu Xie

    发明人： Xi-Cheng Zhang ,  Jianming Dai ,  Xu Xie

    IPC分类号： G01J3/28 ,  G01J5/02 ,  G01J5/00

    CPC分类号： G01J3/42 ,  G01J3/443 ,  G01N21/3581 ,  G01N21/718 ,  G01N2021/1761 ,  G01N2021/1795 ,  G01N2201/0697

    摘要： 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.

    摘要翻译： 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。

    METHODS AND SYSTEMS FOR GENERATING AMPLIFIED TERAHERTZ RADIATION FOR ANALYZING REMOTELY-LOCATED OBJECTS
    9.
    发明申请
    METHODS AND SYSTEMS FOR GENERATING AMPLIFIED TERAHERTZ RADIATION FOR ANALYZING REMOTELY-LOCATED OBJECTS 有权
    用于产生放大的TERAHERTZ辐射的方法和系统用于分析远程定位的物体

    公开(公告)号：US20080048122A1

    公开(公告)日：2008-02-28

    申请号：US11756243

    申请日：2007-05-31

    申请人： Xi-Cheng ZHANG ,  Jianming DAI ,  Xu XIE

    发明人： Xi-Cheng ZHANG ,  Jianming DAI ,  Xu XIE

    IPC分类号： G01N21/35 ,  H01J27/02

    CPC分类号： G01N21/3581 ,  G01N21/3563 ,  G01N21/636 ,  G01S7/4802 ,  G01S13/887 ,  G01S17/026

    摘要： A method for generating amplified terahertz radiation includes inducing a first volume of a gas to produce a seed plasma and emit pulsed seed terahertz radiation by focusing an optical seed beam in the first volume. The seed terahertz radiation is then amplified by focusing an optical gain beam to produce a gain plasma in a second volume overlapping with the pulsed seed terahertz radiation remote from the seed plasma. The method may be implemented in a system for detecting and analyzing a remotely-located object such as an explosive material, a biological agent, and a chemical agent.

    摘要翻译： 用于产生放大的太赫兹辐射的方法包括：通过将光学种子束聚焦在第一体积中来诱导第一体积的气体以产生种子等离子体并发射脉冲种子太赫兹辐射。 然后通过聚焦光学增益束来放大种子太赫兹辐射，以产生与远离种子等离子体的脉冲种子太赫兹辐射重叠的第二体积中的增益等离子体。 该方法可以在用于检测和分析诸如爆炸物质，生物制剂和化学试剂的远程定位物体的系统中实现。

    METHODS AND SYSTEMS FOR THE ENHANCEMENT OF TERAHERTZ WAVE GENERATION FOR ANALYZING A REMOTELY-LOCATED OBJECT
    10.
    发明申请
    METHODS AND SYSTEMS FOR THE ENHANCEMENT OF TERAHERTZ WAVE GENERATION FOR ANALYZING A REMOTELY-LOCATED OBJECT 有权
    用于分析远程定位对象的TERAHERTZ波形生成增强的方法和系统

    公开(公告)号：US20070263682A1

    公开(公告)日：2007-11-15

    申请号：US11756230

    申请日：2007-05-31

    申请人： Xi-Cheng ZHANG ,  Jianming DAI ,  Xu XIE

    发明人： Xi-Cheng ZHANG ,  Jianming DAI ,  Xu XIE

    IPC分类号： H01S3/10

    CPC分类号： G01N21/3581 ,  G01N21/3563 ,  G01N21/636 ,  G01N2021/1793

    摘要： A method for generating terahertz radiation includes inducing a background plasma in a volume of a gas by focusing a first optical beam in the volume, and generating pulsed terahertz radiation with enhanced generation efficiency by focusing a second time-delayed optical beam in the background plasma. The method may be implemented in a system for detecting and analyzing a remotely-located object.

    摘要翻译： 一种用于产生太赫兹辐射的方法包括通过将第一光束聚焦在体积中来引入一定体积的气体中的背景等离子体，以及通过将第二时间延迟的光束聚焦在背景等离子体中来产生具有增强的发生效率的脉冲太赫兹辐射。 该方法可以在用于检测和分析位于远程的对象的系统中实现。