Fast photoconductor
    1.
    发明授权
    Fast photoconductor 有权
    快速光电导体

    公开(公告)号:US09018646B2

    公开(公告)日:2015-04-28

    申请号:US12530641

    申请日:2008-03-10

    摘要: A photoconductor comprising a layer stack with a semiconductor layer photoconductive for a predetermined wavelength range between two semiconductor boundary layers with a larger band gap than the photoconductive semiconductor layer on a substrate, wherein the semiconductor boundary layers comprise deep impurities for trapping and recombining free charge carriers from the photoconductive semiconductor layer, and two electrodes connected to the photoconductive semiconductor layer, for lateral current flow between the electrodes through the photoconductive semiconductor layer.

    摘要翻译: 一种光电导体,其包括具有在衬底上具有比所述光电导半导体层更大的带隙的两个半导体边界层之间的预定波长范围的光电导体层叠层,其中所述半导体边界层包含用于俘获和重新结合游离载流子的深杂质 光电导半导体层和连接到光电导半导体层的两个电极,用于通过光电导半导体层在电极之间的横向电流流动。

    Fast Photoconductor
    3.
    发明申请
    Fast Photoconductor 有权
    快速感光体

    公开(公告)号:US20110057206A1

    公开(公告)日:2011-03-10

    申请号:US12530641

    申请日:2008-03-10

    IPC分类号: H01L31/12 H01L31/18

    摘要: A photoconductor having a layer stack (72) with a semiconductor layer (64) photoconductive for a predetermined wavelength range between two semiconductor boundary layers (62) with a larger band gap than the photoconductive semiconductor layer (64) on a substrate (60), wherein the semiconductor boundary layers (62) have deep impurities for trapping and recombining free charge carriers from the photoconductive semiconductor layer (64), and two electrodes connected to the photoconductive semiconductor layer (64), for lateral current flow between the electrodes through the photoconductive semiconductor layer (64).

    摘要翻译: 一种光电导体,其具有在基板(60)上具有比光电导半导体层(64)更大的带隙的两个半导体边界层(62)之间具有预定波长范围的导电的半导体层(64)的层堆叠(72) 其中所述半导体边界层(62)具有深度杂质用于从所述光电导半导体层(64)捕获和重新结合游离的载流子,以及连接到所述光电导半导体层(64)的两个电极,用于通过所述光电导体 半导体层(64)。

    Method for creating and coherently detecting terahertz radiation
    4.
    发明授权
    Method for creating and coherently detecting terahertz radiation 有权
    创建和相干检测太赫兹辐射的方法

    公开(公告)号:US08901497B2

    公开(公告)日:2014-12-02

    申请号:US12677981

    申请日:2008-09-12

    IPC分类号: H01L31/167 G01N21/35

    CPC分类号: G01N21/3581

    摘要: The present invention relates to a device for creating and coherently detecting terahertz radiation, comprising a laser light source (1), a transmission antenna (2) that can be activated by the laser light source (1) for creating the terahertz radiation, and a receiver with a receiver antenna (3) that can be activated by the same laser light source (1), wherein the transmission antenna (2) comprises a photo diode as a light-sensitive element and the receiver antenna (3) a fast photo-conductor as a light-sensitive element. The invention further relates to a use of such a device for analyzing a sample.

    摘要翻译: 本发明涉及一种用于创建和相干检测太赫兹辐射的装置,包括激光光源(1),可由激光光源(1)激活以产生太赫兹辐射的发射天线(2),以及 具有可由相同激光源(1)激活的接收器天线(3)的接收器,其中所述发射天线(2)包括作为光敏元件的光电二极管,并且所述接收器天线(3) 导体作为光敏元件。 本发明还涉及这种用于分析样品的装置的用途。

    Method and arrangement for carrying out time-domain measurements
    5.
    发明授权
    Method and arrangement for carrying out time-domain measurements 有权
    进行时域测量的方法和布置

    公开(公告)号:US08546762B1

    公开(公告)日:2013-10-01

    申请号:US13538554

    申请日:2012-06-29

    IPC分类号: G01J5/02

    CPC分类号: G01J3/2889

    摘要: Time-domain measurements are carried out using arrangements and methods. A transmitter generates electro-magnetic pulses upon receipt of pulses of an optical pulse source. A coherent detector detects the electro-magnetic pulses or an evoked electro-magnetic signal. A delay line periodically changes the optical path length between the optical pulse source and the coherent detector and/or the electro-magnetic transmitter by periodically moving an optical element of the delay line. A position sensor determines the position of the optical element and smoothes the data generated by the position sensor. The coherent detector detects the electro-magnetic signal evoked by the electro-magnetic pulses. Pulses of the optical pulse source trigger the coherent detector. The time-dependency of the electro-magnetic pulses and/or of the electro-magnetic signal evoked by the electro-magnetic pulses are determined using signals of the coherent detector upon receipt of the electro-magnetic pulses and/or of the electro-magnetic signal and the smoothed position sensor data.

    摘要翻译: 使用布置和方法进行时域测量。 发射机在接收到光脉冲源的脉冲时产生电磁脉冲。 相干检测器检测电磁脉冲或诱发电磁信号。 通过周期性地移动延迟线的光学元件,延迟线周期性地改变光脉冲源和相干检测器和/或电磁发射器之间的光程长度。 位置传感器确定光学元件的位置并平滑由位置传感器产生的数据。 相干检测器检测由电磁脉冲引起的电磁信号。 光脉冲源的脉冲触发相干检测器。 电磁脉冲引起的电磁脉冲和/或电磁信号的时间依赖性是在接收到电磁脉冲和/或电磁脉冲时使用相干检测器的信号来确定的 信号和平滑的位置传感器数据。

    Improved-efficiency fibre-coupled terahertz system
    6.
    发明授权
    Improved-efficiency fibre-coupled terahertz system 有权
    改进效率的光纤耦合太赫兹系统

    公开(公告)号:US08975584B2

    公开(公告)日:2015-03-10

    申请号:US13881085

    申请日:2011-10-25

    IPC分类号: G01J5/22 G01N21/3581

    CPC分类号: G01J5/22 G01N21/3581

    摘要: A terahertz system can be configured for producing and coherently detecting terahertz radiation. The system can comprise a laser light source and two THz antennas, a first of which is used as a transmission antenna and a second of which is used as a receiver antenna, which are each optically coupled to the laser light source by an optical fiber and can be activated by light from this laser light source, wherein the THz antennas each have a semiconductor chip to which antenna conductors have been contact-connected and which comprises at least one photosensitive active layer with a band edge wavelength which is longer than a wavelength of the laser light source and at least one layer, adjoining the active layer, with a band edge wavelength which is shorter than the wavelength of the laser light source, wherein the band edge wavelength of the active layer of at least one of the THz antennas is at least 200 nm longer than the wavelength of the laser light source.

    摘要翻译: 可以配置太赫兹系统以产生和相干地检测太赫兹辐射。 该系统可以包括激光光源和两个THz天线,第一个天线用作发射天线,第二个天线用作接收机天线,每个天线通过光纤光学耦合到激光光源,并且 可以由来自该激光光源的光激活,其中THz天线各自具有半导体芯片,天线导体已经被接触连接到该半导体芯片,并且其包括至少一个光敏有源层,其带边长波长比波长 所述激光光源和与所述有源层相邻的至少一层具有比所述激光光源的波长短的带边缘波长,其中,所述至少一个所述THz天线的有源层的带边缘波长为 比激光光源的波长长至少200nm。

    Arrangement for generating a signal having an adjustable time position or phase position
    7.
    发明授权
    Arrangement for generating a signal having an adjustable time position or phase position 有权
    用于产生具有可调节时间位置或相位位置的信号的装置

    公开(公告)号:US08953937B2

    公开(公告)日:2015-02-10

    申请号:US13514168

    申请日:2011-02-11

    摘要: The invention relates to a system for producing a signal having a variably adjustable time position or phase position, comprising at least one light source for producing a first light component (2) having a first wavelength and a second light component (2′) having a second wavelength deviating from the first wavelength and a phase modulator (5) for varying a phase of the first light component (2), wherein the system is designed to produce a beat note signal by superposing the two light components (2, 2′) and has a common optical fiber (4) for coupling in both light components (2, 2′), wherein furthermore the phase modulator (5) is arranged at an end or in the course of said optical fiber (4) and is transparent to both light components (2, 2′) and is designed to vary the phase of the first light component (2) selectively independently of a phase of the second light component (2′) or more intensely than the phase of the second light component (2′). The invention further relates to a use of such a system.

    摘要翻译: 本发明涉及一种用于产生具有可变调节的时间位置或相位位置的信号的系统,包括至少一个光源,用于产生具有第一波长的第一光分量(2)和具有第一波长的第二光分量(2'),第二光分量 偏移第一波长的第二波长和用于改变第一光分量(2)的相位的相位调制器(5),其中该系统被设计成通过将两个光分量(2,2')叠加来产生节拍信号, 并且具有用于在两个光分量(2,2')中耦合的公共光纤(4),此外,相位调制器(5)布置在所述光纤(4)的端部或过程中,并且对于 两个光分量(2,2')并且被设计成选择性地独立于第二光分量(2')的相位改变第一光分量(2)的相位或更强烈地改变第二光分量(2)的相位 2')。 本发明还涉及这种系统的用途。

    Method and device for identifying a material
    8.
    发明授权
    Method and device for identifying a material 有权
    用于识别材料的方法和装置

    公开(公告)号:US09103774B2

    公开(公告)日:2015-08-11

    申请号:US13504239

    申请日:2010-10-25

    摘要: A material may be identified using THz radiation that simultaneously or sequentially includes at least one first frequency portion and a second frequency portion different therefrom. An object formed from the material to be identified is irradiated with the THz radiation and the THz radiation exiting the object is detected using a phase-sensitive THz receiver. A time or phase offset, caused by the object, is measured at least for the first frequency portion and a material thickness is determined therefrom. Attenuation of the received signal, at least for the second frequency portion, is determined. An absorption coefficient for at least the second frequency portion is calculated using the material thickness.

    摘要翻译: 可以使用同时或顺序地包括与其不同的至少一个第一频率部分和第二频率部分的THz辐射来识别材料。 由待鉴定的材料形成的物体用THz辐射照射,并使用相敏THz接收器检测离开物体的THz辐射。 至少对于第一频率部分测量由对象引起的时间或相位偏移,并且由其确定材料厚度。 至少对于第二频率部分确定接收信号的衰减。 使用材料厚度来计算至少第二频率部分的吸收系数。

    METHOD AND APPARATUS FOR DETERMINING A SUBSTANCE USING THZ RADIATION
    9.
    发明申请
    METHOD AND APPARATUS FOR DETERMINING A SUBSTANCE USING THZ RADIATION 有权
    使用THZ辐射测定物质的方法和装置

    公开(公告)号:US20140319356A1

    公开(公告)日:2014-10-30

    申请号:US14240690

    申请日:2012-07-31

    IPC分类号: G01N21/55

    摘要: The invention relates to a method for determining a liquid in a closed container using THz radiation, in which a first and a second measurement are carried out, wherein the THz radiation is emitted in the direction of the liquid for measuring properties of the liquid, and a portion of the THz radiation coming from the direction of the liquid is detected. In the proposed method, the closed container contains, in addition to the liquid, a gas, wherein a wall of the container is transmissive for THz radiation and wherein the detected portion of the THz radiation in the first measurement is reflected at a boundary surface between the wall and the gas or a pocket containing the gas, and in-the second measurement is reflected at a boundary surface between the wall and the liquid. The first measurement thus serves as a reference measurement for capturing disturbing losses in the THz beam path and for determining influences of the wall on a measurement result for the second measurement. The invention further relates to an arrangement suitable for carrying out this method.

    摘要翻译: 本发明涉及一种使用THz辐射确定密闭容器中的液体的方法,其中执行第一和第二测量,其中THz辐射沿液体的方向发射以测量液体的性质,以及 检测来自液体方向的一部分THz辐射。 在所提出的方法中,密封容器除了液体之外还包含气体,其中容器的壁对于THz辐射是透射的,并且其中在第一测量中所检测到的部分THz辐射被反射在 壁和气体或包含气体的口袋,并且在第二测量中反映在壁和液体之间的边界表面。 因此,第一测量用作用于捕获太赫兹光束路径中的干扰损耗并用于确定壁对第二测量的测量结果的影响的参考测量。 本发明还涉及一种适于实施该方法的装置。

    IMPROVED-EFFICIENCY FIBRE-COUPLED TERAHERTZ SYSTEM
    10.
    发明申请
    IMPROVED-EFFICIENCY FIBRE-COUPLED TERAHERTZ SYSTEM 有权
    改进效率纤维耦合TERAHERTZ系统

    公开(公告)号:US20130306869A1

    公开(公告)日:2013-11-21

    申请号:US13881085

    申请日:2011-10-25

    IPC分类号: G01J5/22

    CPC分类号: G01J5/22 G01N21/3581

    摘要: A terahertz system can be configured for producing and coherently detecting terahertz radiation. The system can comprise a laser light source and two THz antennas, a first of which is used as a transmission antenna and a second of which is used as a receiver antenna, which are each optically coupled to the laser light source by an optical fibre and can be activated by light from this laser light source, wherein the THz antennas each have a semiconductor chip to which antenna conductors have been contact-connected and which comprises at least one photosensitive active layer with a band edge wavelength which is longer than a wavelength of the laser light source and at least one layer, adjoining the active layer, with a band edge wavelength which is shorter than the wavelength of the laser light source, wherein the band edge wavelength of the active layer of at least one of the THz antennas is at least 200 nm longer than the wavelength of the laser light source.

    摘要翻译: 可以配置太赫兹系统以产生和相干地检测太赫兹辐射。 该系统可以包括激光光源和两个THz天线,第一个天线用作发射天线,第二个天线用作接收机天线,每个天线通过光纤光学耦合到激光光源,并且 可以由来自该激光光源的光激活,其中THz天线各自具有半导体芯片,天线导体已经被接触连接到该半导体芯片,并且其包括至少一个光敏有源层,其带边长波长比波长 所述激光光源和与所述有源层相邻的至少一层具有比所述激光光源的波长短的带边缘波长,其中,所述至少一个所述THz天线的有源层的带边缘波长为 比激光光源的波长长至少200nm。