公开(公告)号：EP1905060A2

公开(公告)日：2008-04-02

申请号：EP06786531.1

申请日：2006-07-07

Applicant: Board of Trustees of Michigan State University

Inventor： DANTUS, Marcos ,  PASTIRK, Igor ,  LOZOVOY, Vadim V. ,  COMSTOCK, Matthew

IPC: H01J49/16

CPC classification number: H01J49/164 ,  A61B5/0066 ,  A61B5/0073 ,  G01B9/02014 ,  G01B9/02091 ,  G01J11/00 ,  G01N21/6428 ,  H01S3/0057 ,  H01S3/1307 ,  H01S3/2325 ,  H01S3/235

Abstract: A control system and apparatus for use with an ultra-fast laser is provided. In another aspect of the present invention, the apparatus includes a laser, pulse shaper, detection device and control system. A multiphoton intrapulse interference method is used to characterize the spectral phase of laser pulses and to compensate for any distortions in an additional aspect of the present invention. In another aspect of the present invention, a system employs multiphoton intrapulse interference phase scan. Furthermore, another aspect of the present invention locates a pulse shaper and/or MIIPS unit between a spectral dispersion point in a laser oscillator and an output of a laser amplifier.

公开(公告)号：EP1783931A4

公开(公告)日：2007-11-28

申请号：EP04747396

申请日：2004-07-12

Applicant: MITSUBISHI ELECTRIC CORP

Inventor： ABE JUN ICHI ,  SHIMIZU KATSUHIRO ,  HASEGAWA TOSHIO ,  NISHIOKA TSUYOSHI ,  ISHIZUKA HIROKAZU

IPC: H04B10/516 ,  H04B10/524 ,  H04B10/61 ,  H04B10/70 ,  H04J14/00 ,  H04J14/02 ,  H04J14/08 ,  H04L9/08 ,  H04L9/12

CPC classification number: H04L9/0852 ,  G01J11/00 ,  H04B10/70 ,  H04J14/02

Abstract: A photon detecting apparatus for use in a quantum encryption receiver apparatus or the like, wherein a plurality of photon detectors are used to improve the response speed of the photon detecting apparatus. There are included wavelength branching means (12) for branching a wavelength-multiplexed incident photon pulse sequence for each of wavelengths; a plurality of photon detectors (13-1, ···, 13-n) for detecting the photons as branched by the wavelength branching means (12); bias applying means (14) for applying gate pulses, as bias voltages, to the respective ones of the plurality of photon detectors (13-1, ···, 13-n) in conformity with the timings at which the output lights of the wavelength branching means (12) are incident on the plurality of photon detectors (13-1, ···, 13-n); and data processing means (15) for converting the detection signals from the plurality of photon detectors (13-1, ···, 13-n) to time series signals.

Abstract translation: 一种用于量子加密接收机装置等的光子检测装置，其中使用多个光子检测器来提高光子检测装置的响应速度。 包括波长分支装置（12），用于分支每个波长的波长复用入射光子脉冲序列; 多个光子检测器（13-1，...，13-n），用于检测由波长分支装置（12）分支的光子; 偏置施加装置（14），用于根据所述多个光子检测器（13-1，...，13-n）中的输出光的定时将栅极脉冲作为偏置电压施加到所述多个光子检测器 波长分支装置（12）入射到多个光子检测器（13-1，...，13-n）上。 和数据处理装置（15），用于将来自多个光子检测器（13-1，...，13-n）的检测信号转换成时间序列信号。

公开(公告)号：EP1256789B1

公开(公告)日：2006-08-02

申请号：EP02253276.6

申请日：2002-05-10

Applicant: Agilent Technologies, Inc.

Inventor： Yamada, Norihide ,  Yamashita, Katsuya ,  Watanabe, Satoshi

IPC: G01J11/00 ,  G01R13/34 ,  H04B10/08

CPC classification number: G01J11/00

公开(公告)号：EP1281061B1

公开(公告)日：2006-03-29

申请号：EP01924676.8

申请日：2001-04-05

Applicant: RENSSELAER POLYTECHNIC INSTITUTE

Inventor： ZHANG, X.-C. ,  TANI, Masahiko ,  JIANG, Zhiping ,  CHEN, Qin

IPC: G01N21/35 ,  G01J11/00

CPC classification number: G01N21/3581 ,  G01J11/00

Abstract: A system for emitting and detecting terahertz frequency electromagnetic pulses. The system comprises a single transceiver device, which may be an electro-optic crystal or photoconductive antenna, for both emitting and detecting the pulses. A related method comprises using a single transceiver device to both emit and detect electromagnetic terahertz frequency pulses. The transceiver device is excited by a pump pulse to emit a terahertz output pulse, which is modulated with a chopper. An object reflects the terahertz pulse and the reflected pulse is detected in the transceiver using a probe pulse. A lock-in amplifier set to the same frequency of the chopper is used to reduce noise in the signal detected by the transceiver. An image of the object may be created using the intensity or the timing of the peak amplitude of the terahertz pulses reflected from the object.

公开(公告)号：EP1480028A1

公开(公告)日：2004-11-24

申请号：EP03447116.9

申请日：2003-05-21

Applicant: UNIVERSITE LIBRE DE BRUXELLES

Inventor： Kockaert, Pascal ,  Haelterman, Marc ,  Emplit, Philippe

IPC: G01J11/00 ,  G04F13/02

CPC classification number: G01J11/00 ,  G04F13/02

Abstract: La présente invention se rapporte à une méthode et un dispositif pour la caractérisation d'impulsions optiques isolées ou au sein d'un train d'impulsions. La méthode et le dispositif sont utilisables pour caractériser des impulsions courtes et ultracourtes.
La méthode comprend une étape de création de deux images de spectres décalés, à partir de la même impulsion ou du même train d'impulsions. À partir d'un signal de battement entre deux fréquences superposées des deux spectres, la méthode de l'invention permet de reconstruire la phase spectrale de l'impulsion. Dans sa forme préférée, le dispositif de l'invention comprend un prisme de Wollaston (3) et un polariseur (6), pour créer deux faisceaux interférant après avoir parcouru le même chemin optique depuis le lieu de séparation du faisceau en deux parties.

Abstract translation: 该方法涉及创建与光脉冲相关联的光谱的两个图像。 图像从已知距离漂移，使得在光谱线的点处发现两个叠加的光谱分量。 在光谱线的点检测干涉信号的光强度。 确定信号的相位，并从信号的相位导出脉冲的频谱相位。 还包括用于实现表征光脉冲的方法的设备的独立权利要求。

公开(公告)号：EP1427028A1

公开(公告)日：2004-06-09

申请号：EP02767957.0

申请日：2002-09-12

Applicant: National Institute of Advanced Industrial Science and Technology

Inventor： IWAI, Shinichiro, Nat. Inst. of Advanced Ind. Sce. ,  OKAMOTO, Hiroshi ,  TOKURA, Yoshinori ,  KANEKO, Yoshio

IPC: H01L31/08

CPC classification number: H01L49/003 ,  G01J11/00 ,  H01L31/08

Abstract: In a photoelectric signal conversion device comprising a substrate (4), formed thereon a thin film (3) that functions as a light detection portion (5), and a pair of electrodes (2) provided thereon across the light detection portion, the thin film constituting the light detection portion is made of a solid state phase transition material, and the pair of electrodes are made of a superconductive material, whereby the light detection portion can respond to optical signals on the order of psec, and the device can follow ON-OFF signals of terahertz.

Abstract translation: 在包括基板（4）的光电信号转换装置中，形成有作为光检测部（5）的薄膜（3）和设置在该光检测部上的一对电极（2） 构成光检测部的膜由固态相变材料制成，并且该对电极由超导材料制成，由此光检测部可以以psec的顺序响应光信号，并且该装置可以接通 -OFF信号的太赫兹。

公开(公告)号：EP1421395A2

公开(公告)日：2004-05-26

申请号：EP02766090.1

申请日：2002-08-22

Applicant: Wavecrest Corporation

Inventor： HAMRE, John, David ,  WILSTRUP, Jan, Brian ,  LI, Peng

IPC: G01R23/165

CPC classification number: G01J11/00 ,  G01R23/165 ,  G01R29/26

Abstract: A system (100) that measures a segment of a waveform by isolating the segment by virtue of gating (10). A waveform anomaly may be gated. The gated waveform is supplied to a plurality of frequency information extractors (16, 18, 20), which yield information regarding the frequency content of the gated waveform at individual frequencies (f0, f1, …, fn). Distortion introduced into the gated waveform may be measured by applying the same gating function to a reference waveform. The system may measure or gate an incoming waveform at time intervals dictated by a clock signal recovered from the incoming waveform. A segment of the waveform to be measured may be circulated through a fiber loop, with a fraction of the circulated signal split off for presentation to a measurement system with each circulation. The point in time at which the waveform crosses a threshold may be determined by straddle sampling.

公开(公告)号：EP1361419A2

公开(公告)日：2003-11-12

申请号：EP03290857.6

申请日：2003-04-07

Applicant: Fastlite

Inventor： Joffre, Manuel ,  Oksenhendler, Thomas ,  Kaplan, Daniel ,  Tournois, Pierre

IPC: G01J11/00

CPC classification number: G01J11/00

Abstract: Le procédé selon l'invention consiste à effectuer :

un filtrage optique linéaire du signal (S) dont on veut mesurer l'amplitude des impulsions grâce à une interaction acoustique entre le signal optique (S) et un faisceau acoustique colinéaire ou quasi-colinéaire,
un mélange dans un élément électrooptique à réponse non linéaire (4) des faisceaux optiques diffractés par le faisceau acoustique, suivi d'au moins un détecteur de l'intensité lumineuse issue du mélangeur (4),
ou au moins une détection-intégration du carré de l'intensité optique diffractée par le faisceau acoustique.

Abstract translation: 根据本发明的方法在于执行：由于光信号（S）与共线或准共线声束之间的声学​​相互作用而对其脉冲振幅将被测量的信号（S）进行线性光学滤波， 电光元件中的混合物，其具有由声束衍射的光束的非线性响应（4），随后是来自混频器（4）的光强度的至少一个检测器，或者方波的至少一个检测积分 由声束衍射的光强度。

公开(公告)号：EP1325291A1

公开(公告)日：2003-07-09

申请号：EP01974512.4

申请日：2001-10-12

Applicant: Bookham Technology PLC

Inventor： WHITBREAD, Neil, David ,  CARTER, Andrew Cannon

IPC: G01J11/00 ,  G04F13/02

CPC classification number: G06E3/003 ,  G01J11/00

Abstract: An optical autocorrelator comprises an optical waveguide (40) of semiconductor material which exhibits two photon absorption at a wavelength at which the autocorrelator is intended to operate. Reflecting means (46) are provided at a part of the waveguide which is remote to an end (42) in which an optical pulse (44) is input for reflecting the optical pulse such as to generate counter-propagating optical pulses in the waveguide. A plurality of electrodes (481-48N) are disposed along the waveguide for measuring a two photon absorption photocurrent (i1-in) generated in the waveguide by the counter-propagating optical pulses.

公开(公告)号：EP1295135A2

公开(公告)日：2003-03-26

申请号：EP01962290.1

申请日：2001-06-22

Applicant: ROSEMOUNT AEROSPACE INC.

Inventor： MACK, Andrew, Paul

IPC: G01R23/16

CPC classification number: G01J11/00 ,  G01S7/4804

Abstract: A method of determining accurately and expeditiously the frequency of a coherent signal from an incoming electrical signal is disclosed. The method comprises the steps of: generating a time sequence of sampled data signals from the incoming electrical signal, detecting the coherent signal in the time sequence of sampled data signals and generating a frequency estimate thereof; and determining the frequency of the detected coherent signal based on a function of the frequency estimate and a time segment of sampled data signals associated with the coherent signal. A system for performing the same is also disclosed.