公开(公告)号：WO2005029015A3

公开(公告)日：2005-08-18

申请号：PCT/US2004015046

申请日：2004-05-13

Applicant: UNIV AKRON ,  GIAKOS GEORGE C

Inventor： GIAKOS GEORGE C

IPC: G01J20060101 ,  G01J3/02 ,  G01J3/28 ,  G01J3/36 ,  G01J4/00 ,  G01J4/04 ,  G01N21/21

CPC classification number: G01J4/04 ,  G01J3/02 ,  G01J3/021 ,  G01J3/0224 ,  G01J3/2823 ,  G01J3/36 ,  G01J3/433 ,  G01J3/447 ,  G01N21/21

Abstract: A multi-energy polarization imaging method consisting of a multi-fusion, dual-rotating retarder / multiple-energy complete Mueller matrix-based polarimeter and dual-energy capabilities The system includes a light source (14) for illuminating a target (18) with a first quantity of light having a first wavelength and a second quantity of light having a second wavelength, the first and second wavelength being different. A polarization-state generator (22) generates a polarization state for each of the first and second quantities of light, and includes a first polarizer (26) through which the first and second quantities of light are transmitted before entering a first waveplate (32). A polarization-state receiver (44) evaluates a resulting polarization state of the first and second quantities of light following illumination of the target (18), the polarization-state receiver (44) including a second waveplate (48) through which the first and second quantities of light are transmitted before entering a second polarizer (51). An optical image-capture device captures a first image of the target illuminated by the first quantity of light and a second image of the target illuminated by the second quantity of light. A processing unit assigns a weighting factor to at least one of the first and second images and evaluates a weighted difference between the first and second images to generate a multi-energy image of the target (18).

Abstract translation: 一种由多融合双旋转延迟器/多能量完全基于米勒矩阵的偏振计和双能量能量组成的多能量偏振成像方法该系统包括用于照射目标（18）的光源（14） 具有第一波长的第一光量和具有第二波长的第二光量，第一和第二波长不同。 极化状态发生器（22）对于第一和第二光量的每一个产生偏振状态，并且包括第一偏振器（26），在进入第一波片（32）之前第一和第二光量透射通过该偏振状态， 。 偏振状态接收器（44）评估所述目标（18）的照射之后的所述第一和第二光量的所得偏振状态，所述偏振态接收器（44）包括第二波片（48），所述第一和第 在进入第二偏振器51之前传输第二量的光。 光学图像捕获装置捕获由第一光量照射的目标的第一图像和由第二光量照射的目标的第二图像。 处理单元将加权因子分配给第一和第二图像中的至少一个，并且评估第一和第二图像之间的加权差以产生目标（18）的多能量图像。

公开(公告)号：WO2005026673A3

公开(公告)日：2005-07-07

申请号：PCT/US2004027009

申请日：2004-08-19

Applicant: ITT MFG ENTPR S INC ,  DOBBS MICHAEL E ,  PRUITT JEFF D ,  GYPSON MATTHEW L ,  NEFF BENJAMIN R

Inventor： DOBBS MICHAEL E ,  PRUITT JEFF D ,  GYPSON MATTHEW L ,  NEFF BENJAMIN R

IPC: G01J3/447 ,  G01J4/04 ,  G01N21/21

CPC classification number: G01N21/21 ,  G01J3/447 ,  G01N2021/1757 ,  G01N2021/1793 ,  G01N2201/0691

Abstract: Remotely sensing a target may include generating a first beam of optical radiation that is modulated at a first frequency and polarized at a first polarization. A second beam of optical radiation that is modulated at a second frequency and polarized at a second polarization may also be generated. The first and second beams of optical radiation may be transmitted to the target. Radiation at the first polarization and radiation at the second polarization may be detected from the target using a phase sensitive technique and the first and second frequencies.

Abstract translation: 远程感测目标可以包括产生以第一频率被调制并以第一极化极化的第一光束。 也可以产生以第二频率被调制并以第二极化极化的第二光束。 光辐射的第一和第二光束可以传输到目标。 可以使用相敏技术和第一和第二频率从目标检测第一极化处的辐射和第二极化处的辐射。

公开(公告)号：WO02079821A3

公开(公告)日：2002-11-21

申请号：PCT/GB0201442

申请日：2002-03-26

Applicant: BOOKHAM TECHNOLOGY PLC ,  LUFF BRADLEY JONATHAN

Inventor： LUFF BRADLEY JONATHAN

IPC: G01J3/447 ,  H04J14/02 ,  H04J14/06 ,  G02B6/293

CPC classification number: G01J3/447 ,  H04J14/02 ,  H04J14/06

Abstract: An optical waveguide device formed on an integrated planar substrate and comprising at least two signal demultiplexers each arranged to demultiplex input light into a plurality of output channels, each of said two demultiplexers being arranged to demultiplex respective different polarisation modes, an input waveguide for receiving input light and providing an input path to a polarisation splitter arranged to supply light or different polarisation modes from the input light to said two demultiplexers, and a plurality of light output paths from each of said demultiplexers arranged to direct said output channels to a plurality of light output detecting locations.

Abstract translation: 一种形成在集成平面基板上并包括至少两个信号解复用器的光波导器件，每个信号解复用器被布置成将输入光分离成多个输出通道，所述两个解复用器中的每一个被布置为对各自的不同偏振模式进行解复用，输入波导用于接收输入 并且提供到偏振分束器的输入路径，所述偏振分离器布置成从输入光提供光或不同的偏振模式到所述两个解复用器，以及来自所述解复用器中的每一个的多个光输出路径被布置成将所述输出通道引导到多个光 输出检测位置。

公开(公告)号：WO02050501A1

公开(公告)日：2002-06-27

申请号：PCT/US2001/049001

申请日：2001-12-18

IPC: G01J3/447 ,  G01J4/04 ,  G01N21/21 ,  G01J4/00 ,  G01N21/00

CPC classification number: H01L22/20 ,  G01J3/447 ,  G01J4/04 ,  G01N21/211

Abstract: The invention relates in general to systems dor finding profiles of topographical features of small dimensions, such as those of a silicon substrate (12), and in particular to such systems using optical spectrometer (60).

Abstract translation: 本发明一般涉及系统寻找诸如硅衬底（12）的小尺寸的形貌特征的轮廓，并且特别涉及使用光谱仪（60）的系统。

公开(公告)号：WO01081949A2

公开(公告)日：2001-11-01

申请号：PCT/US2001/013489

申请日：2001-04-26

IPC: G01J3/02 ,  G01J3/04 ,  G01J3/28 ,  G01J3/36 ,  G01J3/447 ,  G01J4/00 ,  G01J9/00 ,  G01J11/00 ,  G01N21/21 ,  G01N21/31 ,  G01N21/64 ,  G01S7/481 ,  G01S17/89 ,  G04F13/02 ,  G01S17/00

CPC classification number: G01J3/02 ,  G01J3/0218 ,  G01J3/0229 ,  G01J3/0256 ,  G01J3/0294 ,  G01J3/04 ,  G01J3/2803 ,  G01J3/2823 ,  G01J3/2889 ,  G01J3/36 ,  G01J3/447 ,  G01J4/00 ,  G01J9/00 ,  G01J11/00 ,  G01N21/21 ,  G01N21/31 ,  G01N21/6408 ,  G01N21/6456 ,  G01N2021/1793 ,  G01N2021/6417 ,  G01N2021/6423 ,  G01S7/481 ,  G01S7/4817 ,  G01S17/89 ,  G04F13/02 ,  G04F13/026 ,  H01J43/00

Abstract: Plural electronic or optical images are provided in a streak optical system, as for instance by use of plural slits instead of the conventional single slit, to obtain a third, fourth, etc. dimension - rather than only the conventional two, namely range or time and azimuth. Such additional dimension or dimensions are thereby incorporated into the optical information that is to be streaked and thereby time resolved. The added dimensions may take any of an extremely broad range of forms, including wavelength, polarization state, or one or more spatial dimensions - or indeed virtually any optical parameter that can be impressed upon a probe beam. Resulting capabilities remarkably include several new forms of lidar spectroscopy, fluorescence analysis, polarimetry, spectropolarimetry, and combinations of these, as well as a gigahertz wavefront sensor.

Abstract translation: 在条纹光学系统中提供多个电子或光学图像，例如通过使用多个狭缝而不是传统的单个狭缝来获得第三，第四等尺寸，而不是仅仅是传统的两个，即范围或时间 和方位角。 因此，这样的附加尺寸或尺寸被并入要划线的光学信息中，从而被时间分辨。 增加的尺寸可以采用非常宽的范围的范围，包括波长，偏振状态或一个或多个空间维度，或实际上实际上可以施加到探测光束上的任何光学参数。 所产生的功能显着地包括激光雷达光谱，荧光分析，偏振测量，分光偏振测量及其组合的几种新形式，以及千兆赫兹波前传感器。

公开(公告)号：WO01065219A1

公开(公告)日：2001-09-07

申请号：PCT/GB2001/000711

申请日：2001-02-20

IPC: G01J3/28 ,  G01J3/447 ,  G01J3/457 ,  G01N21/35

CPC classification number: G01N21/3504 ,  G01J3/447 ,  G01J3/457 ,  G01J2003/2866

Abstract: A spectrometer for determining the concentration of a substance within a sample comprises a. a radiation source (11) for supplying radiation to the sample to be measured; b. a filter (15) for filtering radiation transmitted by the sample, the filter having a number of pass bands at wavelengths corresponding to absorption peaks in the absorption spectrum of the sample to be detected, the filter being responsive to an applied signal to modulate the wavelengths of the pass bands; and, c. a detector (16) for detecting the filtered radiation, the detector being responsive to the applied signal to determine the relative intensities of the maxima and minima in the absorption spectra of the substance, characterized in that the radiation source is selectively activated in response to the applied signal.

Abstract translation: 用于确定样品中物质浓度的光谱仪包括a。 辐射源（11），用于向被测样品供给辐射; 湾 滤波器（15），用于滤波由样品透射的辐射，滤光器具有多个通过带，其波长对应于待检测样品的吸收光谱中的吸收峰，该滤波器响应所施加的信号以调制波长 的通带; 和，c。 检测器（16），用于检测经滤波的辐射，所述检测器响应所施加的信号以确定所述物质的吸收光谱中的最大值和最小值的相对强度，其特征在于，所述辐射源根据 应用信号。

公开(公告)号：WO99008067A1

公开(公告)日：1999-02-18

申请号：PCT/US1998/016434

申请日：1998-08-06

IPC: G01B9/02 ,  G01J3/447 ,  G01J3/45 ,  G01J3/453 ,  G01N21/17 ,  G01N21/19 ,  G01N21/21 ,  G01N21/27 ,  G01N21/35

CPC classification number: G01N21/1702 ,  G01J3/447 ,  G01J3/453

Abstract: Digital signal processing (DSP) techniques for performing multiple modulation measurements with a polarization photoelastic modulator (PEM) in a step-scanning FT-IR spectrometer. The frequency and phase of the PEM drive signal are extracted from the digitized data collected for the actual measurement. This can then be used to perform the desired analysis of the polarization signals (e.g., CD, LD, DIRLD). This is accomplished by successively refining an initial estimate of the PEM frequency (typically starting at the nominal PEM frequency omega 0, or at the value determined from the previous step). This is done by using the current estimate of the PEM frequency to compute a phase error, and then using the computed phase error to refine the estimate of the PEM frequency. The phase errors are computed using different sets of samples in the sampling interval.

Abstract translation: 用于在步进扫描FT-IR光谱仪中用偏振光弹性调制器（PEM）进行多次调制测量的数字信号处理（DSP）技术。 从为实际测量收集的数字化数据中提取PEM驱动信号的频率和相位。 然后可以将其用于执行偏振信号（例如，CD，LD，DIRLD）的所需分析。 这是通过连续地改进PEM频率的初始估计（通常以标称PEM频率ω0开始，或以从前一步骤确定的值）来完成的。 这通过使用PEM频率的当前估计来计算相位误差来完成，然后使用计算出的相位误差来细化PEM频率的估计。 在采样间隔内使用不同的样本集来计算相位误差。

公开(公告)号：WO1998013676A1

公开(公告)日：1998-04-02

申请号：PCT/JP1997003391

申请日：1997-09-24

Applicant: LABORATORY OF MOLECULAR BIOPHOTONICS ,  TOYONAGA, Shuji ,  SHIROSHITA, Masahisa ,  SUGA, Takayuki ,  NAKANO, Yoshitaro

Inventor： LABORATORY OF MOLECULAR BIOPHOTONICS

IPC: G01J04/00

CPC classification number: G01N21/6445 ,  G01J3/4406 ,  G01J3/447 ,  G01J4/00 ,  G01N21/65

Abstract: The polarization of fluorescent light or Raman scattering light which is emitted from a sample when light is applied to the sample is measured with high accuracy. Excitation light which is emitted from a pulse excitation light source (1) and is p-polarized by a polarizer (2) and a half-wave plate (3) is applied to a sample (7) and the p-polarization component intensity Ipp and s-polarization component intensity Ips of the emitted fluorescent light are measured by photodetectors (13 and 14). In the same way, s-polarized excitation light is applied to the sample (7) and the p-polarization component intensity Isp and s-polarization component intensity Iss of emitted fluorescent light are measured. The G-factor is obtained from those measured values by a following formula: G = [(Ipp.Isp)/(Ips.Iss)] . Polarization responsiveness correction is performed in accordance with the G-factor to obtain the polarization of the fluorescent light.

Abstract translation: 以高精度测量向样品施加光时从样品发出的荧光或拉曼散射光的极化。 从脉冲激励光源（1）发射并由偏振器（2）和半波片（3）p极化的激发光施加到样品（7）上，并且p偏振分量强度Ipp 并且通过光电检测器（13和14）测量发射的荧光的s偏振分量强度Ips。 以相同的方式，对样品（7）施加s偏振激发光，并测量发射荧光的p偏振分量强度Isp和s偏振分量强度Iss。 G因子通过下式由这些测量值获得：G = [（Ipp.Isp）/（Ips.Iss）] 1/2。 根据G因子执行极化响应性校正，以获得荧光的偏振。

公开(公告)号：WO1990010191A1

公开(公告)日：1990-09-07

申请号：PCT/CH1990000008

申请日：1990-01-15

Applicant: PROLITEC AG ,  WAGNER, Heinz ,  LABHART, Martin ,  GLAUS, Ulrich

Inventor： PROLITEC AG

IPC: G01B09/02

CPC classification number: G01J3/447 ,  G01B2290/70 ,  G01J3/4537 ,  G01J2009/0261

Abstract: A polarization interferometer comprises a light source (1), a collimator (2), a first polarization element (3), a system of double-refracting elements (4, 5, 6) and a second polarizing element (7) which polarizes the light emerging from the double-refracting element (4, 5, 6) and directs it to a photon detector (8). The double-refractive element (4, 5, 6) consists of two optical wedges (5, 6) which together constitute a right parallepiped and which are arranged so as to slide relative to each other along opposed side surfaces, and a double-refracting plate (4) with parallel faces which acts as a compensator. The optical axis of the compensator (4) makes a finite angle with those of the two wedges (5, 6) in the plane perpendicular to the light beam, the optical axes of both wedges (5, 6) being coincident. The optical axes of the two polarizers (3, 7) are mutually perpendicular or parallel and are not aligned parallel to the axes of the two wedges (5, 6) of the double-refractive element (4, 5, 6).

Abstract translation: 偏振干涉仪包括光源（1），准直器（2），第一偏振元件（3），双折射元件（4,5,6）和第二偏振元件（7）的系统，其使 从双折射元件（4,5,6）出现的光并将其引导到光子检测器（8）。 双折射元件（4,5,6）由两个光楔（5,6）组成，它们一起构成右平行四边形，并且被布置为相对于彼此相对的侧面相对滑动，并且双折射 平板（4）具有作为补偿器的平行面。 补偿器（4）的光轴与垂直于光束的平面中的两个楔形物（5,6）的光轴形成有限的角度，两个楔形物（5,6）的光轴重合。 两个偏振器（3,7）的光轴相互垂直或平行，并且不平行于双折射元件（4,5,6）的两个楔形物（5,6）的轴线对准。

公开(公告)号：US20240110831A1

公开(公告)日：2024-04-04

申请号：US18486355

申请日：2023-10-13

Applicant: VIAVI SOLUTIONS INC.

Inventor： Driss TOUAHRI ,  Christopher Russell WAGNER ,  Joshua Benjamin Julius PHILIPSON

IPC: G01J3/02 ,  G01J3/447

CPC classification number: G01J3/0224 ,  G01J3/447

Abstract: A system for a high resolution optical spectrum analyzer (OSA) using various optical configurations to reduce polarization dependent loss (PDL) is disclosed. The system may include a birefringent element to receive an input optical beam. The birefringent element may then split the optical beam into at least two exit beams. The system may also include an optical configuration comprising at least one optical element. The optical configuration may receive the at least two exit beams from the birefringent element and transform at least one of the two exit beams using the at least one optical element to provide two parallel beams with parallel polarizations. The optical configuration may then output the two parallel beams with parallel polarizations to a downstream optical element, such as a diffraction grating, or other optical element.