公开(公告)号：US4967080A

公开(公告)日：1990-10-30

申请号：US246106

申请日：1988-09-19

申请人： Tsuneyuki Urakami ,  Yoshihiro Takiguchi

发明人： Tsuneyuki Urakami ,  Yoshihiro Takiguchi

IPC分类号： G01J9/00

CPC分类号： G01J9/00

摘要： An apparatus for measuring the temporal correlation of fundamental particles such as photons, neutrons, X-rays or the like, comprising at least one deflector for sweeping the fundamental particles or images thereof in at least one direction, an aperture member having at least two apertures for time-divisionally extracting the swept fundamental particles or the images thereof, multiplication means, such as dynode groups or photomultipliers, for multiplying each of the extracted fundamental particles or the images thereof and a correlator for performing correlating arithmetic operations on the basis of each output signal from the multiplication means.

公开(公告)号：US5703491A

公开(公告)日：1997-12-30

申请号：US703768

申请日：1996-08-27

申请人： Takuya Nakamura ,  Isuke Hirano ,  Shinichiro Aoshima ,  Hironori Takahashi ,  Tsuneyuki Urakami

发明人： Takuya Nakamura ,  Isuke Hirano ,  Shinichiro Aoshima ,  Hironori Takahashi ,  Tsuneyuki Urakami

IPC分类号： G01R19/00 ,  G01R1/07 ,  G01R15/16 ,  G01R15/22 ,  G01R31/28 ,  G01R31/312 ,  G01R31/032

CPC分类号： G01R1/071 ,  G01R31/312 ,  G01R15/22 ,  G01R15/241

摘要： This invention has as its object to provide a voltage measurement apparatus which has a compact probe unit, and which can perform a measurement in a non-contact manner. The voltage measurement apparatus includes detection means for detecting an electric field generated in a space by a voltage applied to the surface of a device to be measured, light-emitting means for modulating output light by superposing a detected signal obtained from the detection means on a bias current which is supplied to inductively radiate the output light, a constant current source for supplying the bias current to the light-emitting means, extraction means for extracting a signal component of the output light from the light-emitting means, and light-transmission means for guiding the output light from the light-emitting means to the extraction means, and measures the applied voltage to the surface of the device to be measured by bringing the detection means close to the device to be measured in a non-contact manner.

摘要翻译： 本发明的目的是提供一种电压测量装置，其具有紧凑的探针单元，并且可以以非接触方式进行测量。 电压测量装置包括检测装置，用于通过施加到被测量装置的表面的电压来检测在空间中产生的电场;发光装置，用于通过将从检测装置获得的检测信号叠加在一个 提供用于感应放射输出光的偏置电流，用于向发光装置提供偏置电流的恒流源，用于从发光装置提取输出光的信号分量的提取装置，以及光传输 用于将来自发光装置的输出光引导到提取装置的装置，并且通过以非接触的方式使检测装置靠近被测量装置来测量施加到要测量装置的表面的电压。

公开(公告)号：US5384638A

公开(公告)日：1995-01-24

申请号：US858279

申请日：1992-03-26

申请人： Hironori Takahashi ,  Tsuneyuki Urakami ,  Shinichiro Aoshima

发明人： Hironori Takahashi ,  Tsuneyuki Urakami ,  Shinichiro Aoshima

IPC分类号： G01R23/17 ,  G01R1/07 ,  G01R15/22 ,  G01R15/24 ,  G01R19/00 ,  G01R31/302 ,  G01B9/02

CPC分类号： G01R1/071 ,  G01R15/22

摘要： Polarized light pulses are applied to an optical modulator including an electrooptic crystal. A polarization state of the applied light is changed in accordance with a voltage of an electrical signal applied to the optical modulator. A polarization interferometer receives the light output from the optical modulator, and generates an interference fringe on the input surface of a photodetector such as a one-dimensional CCD. A processing device calculates a pitch and a movement distance of the interference fringe, based on an output signal of the photodetector, to determine the voltage. A waveform of the electrical signal is determined by sampling the electrical signal with multiple light pulses, while varying a phase relationship between the electrical signal and the light pulses.

摘要翻译： 偏振光脉冲被施加到包括电光晶体的光学调制器。 所施加的光的偏振状态根据施加到光学调制器的电信号的电压而改变。 偏振干涉仪接收来自光调制器的光输出，并在诸如一维CCD的光电检测器的输入表面上产生干涉条纹。 处理装置基于光电检测器的输出信号计算干涉条纹的间距和移动距离，以确定电压。 电信号的波形通过用多个光脉冲对电信号进行采样来确定，同时改变电信号和光脉冲之间的相位关系。

公开(公告)号：US5353149A

公开(公告)日：1994-10-04

申请号：US121899

申请日：1993-09-16

申请人： Tsuneyuki Urakami ,  Teruo Hiruma

发明人： Tsuneyuki Urakami ,  Teruo Hiruma

IPC分类号： G01J11/00 ,  G02F1/35 ,  H03M9/00

CPC分类号： H03M9/00 ,  G01J11/00 ,  G02F1/3534

摘要： An optical converter is so arranged that light to be measured and probe light are made to interact with each other on a nonlinear element and that mixed light produced by the interaction is detected, which is characterized in that an energy amount of interacting signal light is kept as high as possible without spatial expansion of signal light, which could lower the SN ratio. For this, the time-space conversion function is achieved by a method for producing the probe light. Namely, the optical converter comprises (a) a nonlinear element for making two types of light interact with each other to cause the nonlinear optical effect, (b) a device for guiding light to be measured to the nonlinear element, and (c) a device for producing probe light crossing the light to be measured on the nonlinear element and changing a traveling direction of probe light with change of crossing time. A light waveform measuring apparatus or an optical serial-parallel converter may be attained by adding to the optical converter (d) a device for detecting mixed light produced by the interaction between the signal light and the probe light on the nonlinear element.

摘要翻译： 光学转换器被布置成使被测光和探测光在非线性元件上彼此相互作用，并且检测由相互作用产生的混合光，其特征在于保持相互作用的信号光的能量 尽可能高的信号光空间扩大，这可能降低SN比。 为此，通过用于产生探测光的方法来实现时空转换功能。 也就是说，光转换器包括（a）用于使两种类型的光彼此相互作用以产生非线性光学效应的非线性元件，（b）用于将待测光的装置引导到非线性元件，以及（c） 用于产生在非线性元件上穿过待测光的探针光的装置，并且随着交叉时间的变化改变探测光的行进方向。 通过向光转换器（d）添加用于检测由非线性元件上的信号光和探测光之间的相互作用产生的混合光的装置，可以获得光波形测量装置或光并行转换器。

公开(公告)号：US5319654A

公开(公告)日：1994-06-07

申请号：US39763

申请日：1993-03-30

申请人： Tsuneyuki Urakami ,  Shinichiro Aoshima ,  Isuke Hirano

发明人： Tsuneyuki Urakami ,  Shinichiro Aoshima ,  Isuke Hirano

IPC分类号： H01S3/083 ,  H01S3/093 ,  H01S3/108 ,  H01S3/113 ,  H01S3/30

CPC分类号： H01S3/113

摘要： An object of this invention is to provide a pulsed laser beam source device which is easy to handle and is operative stably. Pumping light is irradiated to a laser medium from a light source for optical pumping. The stimulated laser medium pumps radiation of a set wavelength. This radiation is stimulated to be amplified while reciprocating between resonator mirrors. A multi layer film is inserted in an optical path of the radiation. Feeble light of the radiation from the laser medium is absorbed by the multi-layer to be weaker, and that part of the radiation having intensities above a set intensity is compressed in terms of time to be emitted outside. The emitted radiation has a very short pulse duration.

摘要翻译： 本发明的目的是提供一种易于操作并且稳定操作的脉冲激光束源装置。 泵浦光从用于光泵浦的光源照射到激光介质。 受激的激光介质泵送设定波长的辐射。 该辐射被激发以在谐振镜之间往复放大。 多层膜被插入到辐射的光路中。 来自激光介质的辐射的微弱光被多层吸收较弱，并且具有高于设定强度的强度的部分辐射在时间上被压缩以被外部发射。 发射的辐射具有非常短的脉冲持续时间。

公开(公告)号：US5168164A

公开(公告)日：1992-12-01

申请号：US858861

申请日：1992-03-27

申请人： Tsuneyuki Urakami ,  Motohiro Suyama

发明人： Tsuneyuki Urakami ,  Motohiro Suyama

IPC分类号： G01J11/00

CPC分类号： G01J11/00

摘要： When sampling light and light to be measured each having a wavelength longer than an upper wavelength limit of the sensitivity of a photocathode are incident on the photocathode of a multiphoton absorption-type electron tube, light-light sampling is enabled by two-photon absorption and one-photoelectron emission. A delaying unit adjusts an incident timing of the sampling light from an optical pulse generating unit on the elctron tube in synchronism with an incident timing of the light to be measured on the electron tube. A half mirror causes the sampling light and the light to be measured to coincide on the photocathode of the electron tube. A controlling unit controls the delaying unit to sequentially shift the incident timing of the sampling light on the electron tube. Thus, the operation of a display unit can be controlled in synchronism with the incident timing of the sampling light so that a series of sampling outputs from the electron tube can be converted to the optical waveform of the light to be measured and displayed on the display unit.