公开(公告)号：US09012833B2

公开(公告)日：2015-04-21

申请号：US13582833

申请日：2011-03-09

申请人： Takeaki Itsuji

发明人： Takeaki Itsuji

IPC分类号： G01D18/00 ,  G01J3/42 ,  G01J3/28 ,  G01N21/27 ,  G01N21/3586 ,  G01J3/02

CPC分类号： G01J3/42 ,  G01J3/027 ,  G01J3/28 ,  G01N21/274 ,  G01N21/3586

摘要： The present invention provides a terahertz wave measuring apparatus and measurement method capable of improving the quantitativeness of obtained frequency spectrum information. In a measurement method in which a terahertz wave measuring apparatus is used, the terahertz wave measuring apparatus measures a time waveform of a terahertz wave relating to a calibration sample whose shape of a calibration spectrum is already known and obtains a measurement spectrum by transforming the time waveform. The calibration spectrum and the measurement spectrum are compared, and, on the basis of results of the comparison, time intervals of measurement data that form a time waveform are adjusted in order to calibrate the terahertz wave measuring apparatus.

摘要翻译： 本发明提供能够提高所获得的频谱信息的定量性的太赫兹波测量装置和测量方法。 在使用太赫兹波测量装置的测量方法中，太赫兹波测量装置测量与校准样品的形状已知的校准样品相关的太赫兹波的时间波形，并通过变换时间来获得测量光谱 波形 比较校准光谱和测量光谱，并且基于比较结果，调整形成时间波形的测量数据的时间间隔，以便校准太赫兹波测量装置。

公开(公告)号：US20140183363A1

公开(公告)日：2014-07-03

申请号：US14119169

申请日：2012-04-19

申请人： Kousuke Kajiki ,  Toshihiko Ouchi ,  Takeaki Itsuji

发明人： Kousuke Kajiki ,  Toshihiko Ouchi ,  Takeaki Itsuji

IPC分类号： G01B9/02

CPC分类号： G01B9/02 ,  G01J9/00 ,  G01N21/3554 ,  G01N21/3581 ,  G01N21/3586 ,  G02B26/0833

摘要： The present invention provides a wavefront measuring apparatus and method, and object measuring apparatus which can increase resolution of wavefronts of electromagnetic wave pulses without being limited by the number of detecting elements. An embodiment of the present invention includes a detecting part detecting electric field strength of an electromagnetic wave pulse, and an optical delaying part delaying the electromagnetic wave pulse so as to provide a first propagation path and a second propagation path provided in a spatial region different from a spatial region of the first propagation path and having a length different from a length of the first propagation path, wherein time waveforms of the electromagnetic wave pulse are constructed using a signal associated with the electric field strength detected by the detecting part, and a wavefront is obtained based on the time waveforms and information associated with the lengths of the first and second propagation paths.

摘要翻译： 本发明提供一种波前测量装置和方法以及可以增加电磁波脉冲波前分辨率而不受检测元件数量限制的对象测量装置。 本发明的一个实施例包括检测电磁波脉冲的电场强度的检测部分和延迟电磁波脉冲的光延迟部分，以便提供第一传播路径和设置在不同于 所述第一传播路径的空间区域具有与所述第一传播路径的长度不同的长度，其中，所述电磁波脉冲的时间波形使用与由所述检测部检测的电场强度相关联的信号构成， 基于与第一和第二传播路径的长度相关联的时间波形和信息获得。

公开(公告)号：US08759769B2

公开(公告)日：2014-06-24

申请号：US13196134

申请日：2011-08-02

申请人： Takeaki Itsuji

发明人： Takeaki Itsuji

IPC分类号： G01N21/35

CPC分类号： G01N21/3581 ,  G01J3/108 ,  G01J3/42 ,  G01N21/3586 ,  G02F1/35 ,  G02F2203/13

摘要： A terahertz-wave generating device including an optical waveguide containing an electrooptic crystal includes: first and second optical waveguides through which first and second light beams respectively propagate; a propagation portion through which a first terahertz wave propagates, the first terahertz wave being generated from the second optical waveguide in a direction different from a direction of the second light beam; and a delay portion arranged at incidence sides of the first and second light beams and configured to delay the first light beam relative to the second light beam. The first optical waveguide and the second optical waveguide are arranged with the propagation portion interposed therebetween. A first equiphase surface of the first terahertz wave is substantially aligned with a second equiphase surface of a second terahertz wave generated from the first optical waveguide in a direction different from a direction of the first light beam.

摘要翻译： 包括含有电光晶体的光波导的太赫兹波发生装置包括：分别传播第一和第二光束的第一和第二光波导; 第一太赫波传播的传播部分，第一太赫波在与第二光束的方向不同的方向上从第二光波导产生; 以及延迟部分，布置在第一和第二光束的入射侧，并被配置为相对于第二光束延迟第一光束。 第一光波导和第二光波导布置成传播部分插入其间。 第一太赫兹波的第一同相表面与从第一光波导产生的与第一光束的方向不同的方向基本上与第二太赫波的第二同相表面对准。

公开(公告)号：US08536530B2

公开(公告)日：2013-09-17

申请号：US13190875

申请日：2011-07-26

申请人： Takeaki Itsuji

发明人： Takeaki Itsuji

IPC分类号： G01J5/02

CPC分类号： G01J3/42 ,  G01N21/3586 ,  G01N2021/4797

摘要： A terahertz wave transceiver configured to generate and detect terahertz waves based on time-domain spectroscopy includes a photoconductive device having a photoconductive film, a first electrode, and a second electrode. An excitation light illumination region is formed between the first and second electrodes. A bias applying unit applies a bias between the first electrode and the second electrode to generate the terahertz wave in the excitation light illumination region. A current detection unit detects a terahertz-wave current that is a component of a current generated in the excitation light illumination region and that is generated by an electric field of a received terahertz wave arriving from the outside. A current drawing unit draws a current originating from the bias applied by the bias applying unit. An adjustment unit determines the amount of the current drawn, based on the amount of the bias applied by the bias applying unit.

摘要翻译： 配置为基于时域光谱产生和检测太赫兹波的太赫兹波收发器包括具有光电导膜，第一电极和第二电极的光电导器件。 在第一和第二电极之间形成激发光照射区域。 偏置施加单元在第一电极和第二电极之间施加偏压，以在激发光照射区域中产生太赫兹波。 电流检测单元检测作为在激发光照射区域中产生的电流的分量并且由从外部到达的接收的太赫兹波的电场产生的太赫兹波电流。 电流绘制单元绘制源自偏置施加单元施加的偏压的电流。 调整单元基于由偏置施加单元施加的偏置量确定所绘制的电流量。

公开(公告)号：US20120032081A1

公开(公告)日：2012-02-09

申请号：US13196134

申请日：2011-08-02

申请人： Takeaki Itsuji

发明人： Takeaki Itsuji

IPC分类号： G01J5/02 ,  G01J5/10 ,  G01J3/10

CPC分类号： G01N21/3581 ,  G01J3/108 ,  G01J3/42 ,  G01N21/3586 ,  G02F1/35 ,  G02F2203/13

摘要： A terahertz-wave generating device including an optical waveguide containing an electrooptic crystal includes: first and second optical waveguides through which first and second light beams respectively propagate; a propagation portion through which a first terahertz wave propagates, the first terahertz wave being generated from the second optical waveguide in a direction different from a direction of the second light beam; and a delay portion arranged at incidence sides of the first and second light beams and configured to delay the first light beam relative to the second light beam. The first optical waveguide and the second optical waveguide are arranged with the propagation portion interposed therebetween. A first equiphase surface of the first terahertz wave is substantially aligned with a second equiphase surface of a second terahertz wave generated from the first optical waveguide in a direction different from a direction of the first light beam.

摘要翻译： 包括含有电光晶体的光波导的太赫兹波发生装置包括：分别传播第一和第二光束的第一和第二光波导; 第一太赫波传播的传播部分，第一太赫波在与第二光束的方向不同的方向上从第二光波导产生; 以及延迟部分，布置在第一和第二光束的入射侧，并被配置为相对于第二光束延迟第一光束。 第一光波导和第二光波导布置成传播部分插入其间。 第一太赫兹波的第一同相表面与从第一光波导产生的与第一光束的方向不同的方向基本上与第二太赫波的第二同相表面对准。

公开(公告)号：US08067739B2

公开(公告)日：2011-11-29

申请号：US12141005

申请日：2008-06-17

申请人： Takeaki Itsuji

发明人： Takeaki Itsuji

IPC分类号： G21G4/00 ,  G01J5/20

CPC分类号： G01J3/42 ,  G02F1/3534 ,  G02F2203/13 ,  H01L31/09

摘要： A photoconductive element for generating or detecting a terahertz wave comprises a carrier generation layer for generating carriers on light irradiation, a pair of conductive electrodes provided in opposition on one face of the carrier generation layer, each containing a strip line, a pair of conductive antennas placed in opposition with a gap for light irradiation onto the carrier generation layer, each being joined to the electrodes, a pair of conductive adjusting stubs for adjusting a propagation state of the terahertz wave generated or detected by the carriers, wherein each of the adjusting stubs has a length of not longer than the wavelength λ of the terahertz wave generated by the carriers, and is placed at a distance of not more than the wavelength λ from a joint between the antenna and the electrode.

摘要翻译： 用于产生或检测太赫兹波的光电导元件包括用于在光照射下产生载流子的载流子产生层，在载体产生层的一个面上相对设置的一对导电电极，每个导体电极包含带状线，一对导电天线 放置在与载体产生层上的光照射的间隙相对应，每个接合到电极，一对导电调节短柱，用于调节由载体产生或检测的太赫兹波的传播状态，其中每个调节短截线 具有不大于由载流子产生的太赫兹波的波长λ的长度，并且从天线和电极之间的接合点放置在不大于波长λ的距离处。

公开(公告)号：US20110284748A1

公开(公告)日：2011-11-24

申请号：US13096803

申请日：2011-04-28

申请人： Takeaki Itsuji

发明人： Takeaki Itsuji

IPC分类号： G01J5/02 ,  G01J1/42

CPC分类号： G01N21/3586 ,  G01J3/42 ,  G01N2201/06113 ,  G01N2201/066

摘要： A time-domain waveform of a terahertz wave is measured by a method based on time-domain spectroscopy by using an optical delay unit to adjust an optical path length along which excitation light propagates thereby adjusting a difference between a time at which the excitation light arrives at a generating unit configured to generate the terahertz wave and a time at which the excitation light arrives at a detection unit configured to detect the terahertz wave. The optical delay unit is driven according to a first speed pattern to acquire a first time-domain waveform. The optical delay unit is then driven according to a second speed pattern different from the first speed pattern to acquire a second time-domain waveform. The first time-domain waveform and the second time-domain waveform are averaged.

摘要翻译： 通过使用光学延迟单元调整激发光传播的光程长度，通过基于时域光谱的方法来测量太赫兹波的时域波形，从而调节激发光到达的时间之间的差异 在被配置为产生太赫兹波的发生单元和激发光到达被配置为检测太赫兹波的检测单元的时间。 光延迟单元根据第一速度模式被驱动以获取第一时域波形。 然后根据与第一速度模式不同的第二速度模式来驱动光学延迟单元以获取第二时域波形。 对第一时域波形和第二时域波形进行平均。

公开(公告)号：US20110241699A1

公开(公告)日：2011-10-06

申请号：US12281639

申请日：2008-03-27

申请人： Takeaki Itsuji

发明人： Takeaki Itsuji

IPC分类号： G01R27/04

CPC分类号： G01N21/4795 ,  G01N21/3581

摘要： A detection apparatus and an imaging apparatus are capable of accurately conducting non-destructive observation of a target by using an incoherent electromagnetic wave. The detection apparatus has a generating section, a first coupler section, a delaying section, a second coupler section and a signal processing section. The generating section 101 includes a coherent electromagnetic wave source 102 and a diffusing section 103 for generating a pseudoincoherent electromagnetic wave by changing a propagation state of the coherent electromagnetic wave in accordance with a code pattern. The incoherent electromagnetic wave is split into first and second waves and the first wave is affected by the target of observation while the second wave is delayed by the delaying section. The first and second waves are then coupled to produce a coupled wave having a correlation signal of them and the signal is utilized to acquire information on the inside of the target of observation.

摘要翻译： 一种检测装置和成像装置能够通过使用非相干电磁波来准确地进行靶的非破坏性观察。 检测装置具有生成部，第一耦合部，延迟部，第二耦合部和信号处理部。 生成部101包括相干电磁波源102和扩散部103，用于通过根据码图来改变相干电磁波的传播状态来产生伪相干电磁波。 非相干电磁波分为第一波和第二波，第一波受到观测目标的影响，而第二波被延迟部分延迟。 然后第一和第二波被耦合以产生具有它们的相关信号的耦合波，并且该信号用于获取关于观测目标的内部的信息。

公开(公告)号：US07952441B2

公开(公告)日：2011-05-31

申请号：US12606304

申请日：2009-10-27

申请人： Yasushi Koyama ,  Takeaki Itsuji ,  Toshihiko Ouchi

发明人： Yasushi Koyama ,  Takeaki Itsuji ,  Toshihiko Ouchi

IPC分类号： H03B7/08

CPC分类号： H03B5/1847 ,  H03B7/08

摘要： An electromagnetic-wave oscillator includes a substrate, an EMW oscillating unit including a gain portion, an EMW resonance portion, an EMW radiating portion, and a ground (GND) portion, and a supplying unit for supplying electric power to the EMW oscillating unit. The ground portion regulates a predetermined reference electric potential for the gain portion, the EMW resonance portion, and the EMW radiating portion. The EMW oscillating unit is disposed on a first surface of the substrate. The supplying unit is disposed on a second surface of the substrate extending on an opposite side to the first surface. The EMW oscillating unit and the supplying unit are electrically connected via a penetrating electrode formed in the substrate.

摘要翻译： 电磁波振荡器包括基板，包括增益部分的EMW振荡单元，EMW谐振部分，EMW辐射部分和接地（GND）部分，以及用于向EMW振荡单元供电的供电单元。 接地部分调节增益部分，EMW谐振部分和EMW辐射部分的预定参考电位。 EMW振荡单元设置在基板的第一表面上。 供给单元设置在基板的与第一表面相反的一侧延伸的第二表面上。 EMW振荡单元和供电单元通过形成在基板中的穿透电极电连接。

公开(公告)号：US07759946B2

公开(公告)日：2010-07-20

申请号：US11573507

申请日：2006-08-31

申请人： Takeaki Itsuji

发明人： Takeaki Itsuji

IPC分类号： G01R27/04 ,  G01R27/32

CPC分类号： G01N21/3581 ,  G01N21/3504 ,  G01N21/3563 ,  G01N21/3577 ,  G01N21/774 ,  G01N2021/7736 ,  G01N2021/7776

摘要： A waveguide includes a single line formed by a conductive material for propagating an electromagnetic wave including at least a part of a frequency band of 30 GHz or more and 30 THz or less, a first dielectric member covering the single line, and a second dielectric member covering the single line. A gap is provided between the first dielectric member and the second dielectric member. The electromagnetic wave which propagates from the single line covered by the first dielectric member to the single line covered by the second dielectric member, when propagating through the single line at the gap, is interactable with a specimen to be disposed at the gap.

摘要翻译： 波导包括由导电材料形成的单线，用于传播包括30GHz以上且30THz以下的频带的至少一部分的电磁波，覆盖单线的第一电介质部件和第二电介质部件 覆盖单线。 在第一电介质构件和第二电介质构件之间设置间隙。 当通过第一电介质构件覆盖的单线传播到由第二电介质构件覆盖的单线时，电磁波在间隙中传播通过单线时可与待设置在间隙处的试样相互作用。