公开(公告)号：US09709696B2

公开(公告)日：2017-07-18

申请号：US14911361

申请日：2013-10-16

Applicant: Halliburton Energy Services, Inc.

Inventor： James M. Price ,  David L. Perkins

IPC: G01J4/00 ,  G01V8/20 ,  G01N21/21 ,  E21B49/08 ,  G01J4/02 ,  G02B1/02

CPC classification number: G01V8/20 ,  E21B49/081 ,  G01J4/02 ,  G01N21/21 ,  G01N2201/0683 ,  G01N2201/12 ,  G02B1/02 ,  G02B5/3025

Abstract: An intensity-independent optical computing device and method for performing multivariate optical computing based on changes in polarization of the reflected and/or transmitted electromagnetic radiation to thereby determine sample characteristics.

公开(公告)号：US09702812B2

公开(公告)日：2017-07-11

申请号：US14706743

申请日：2015-05-07

Applicant: Theodore Peter Rakitzis

Inventor： Theodore Peter Rakitzis

IPC: G01N21/19 ,  G01J4/02 ,  G01J4/04 ,  G01N21/21 ,  G01J4/00

CPC classification number: G01N21/19 ,  G01J4/02 ,  G01J4/04 ,  G01J2004/001 ,  G01N21/21 ,  G01N2201/06113 ,  G01N2201/0636 ,  G01N2201/067

Abstract: A polarimeter for measuring chirality of a material comprising an optical ring cavity comprising a plurality of reflective elements configured to promote bi-directional propagation of a laser beam within the cavity, a laser-emitting device configured to introduce a first input laser beam and a second input laser beam into the ring cavity, and a Faraday rotator and a phase compensator configured to suppress a birefringent background as the first and second laser beams pass through the ring cavity, wherein the plurality of mirrors, Faraday rotator, and phase compensator are configured such that light from the first and second laser beams passes through a chiral material located within the cavity a sufficient number of times for a measurement of optical rotary dispersion (ORD) and circular dichroism (CD) of light transmitted through the chiral material to be obtained. Particular implementations include monolithic ring cavities or microresonators or use of intra-cavity gain media.

公开(公告)号：US09664566B2

公开(公告)日：2017-05-30

申请号：US14824390

申请日：2015-08-12

Applicant: THE UNITED STATES OF AMERICA AS REPRESETNED BY THE SECRETARY OF THE AIR FORCE

Inventor： David H. Hughes ,  Reinhard Erdmann

IPC: G01J4/00 ,  G01J4/04 ,  G02B27/28 ,  G02B5/30

CPC classification number: G01J4/02 ,  G01J4/04 ,  G02B5/3083 ,  G02B27/283 ,  G02B27/286 ,  G02B27/288 ,  G02B2207/114

Abstract: A photon entanglement router comprises a modified birefringent spectral filter followed by a polarization beam splitter (PBS). Frequency degenerate or non-degenerate entangled photons, generated by a collinear laser source and incident on one input port of the photon entanglement router, are comprised of congruent photons and/or incongruent photons. The invention adds a plurality of additional filter stacks at each output port such that they invert the action of the first birefringent stack at the input port. Intermediate output photons from the invention is input to two ports of an additional PBS where they are spatially projected according to their frequencies and polarizations. Two congruent photons of an entangled photon pair exit as an entangled pair in one direction, while two incongruent photons exit as an entangled pair in the orthogonal direction. If one photon is congruent and the other photon incongruent, the photons remain entangled but are spectrally divided into orthogonal directions. The invention's birefringent spectral filter accepts specific input frequencies from the ITU optical C-band grid for proper operation.

公开(公告)号：US20170146407A1

公开(公告)日：2017-05-25

申请号：US15426364

申请日：2017-02-07

Applicant: GOVERNMENT OF THE UNITED STATES AS REPRESETNED BY THE SECRETARY OF THE AIR FORCE

Inventor： DAVID H. HUGHES ,  REINHARD ERDMANN

IPC: G01J4/02 ,  G02B27/28 ,  G02B5/30

CPC classification number: G01J4/02 ,  G01J4/04 ,  G02B5/3083 ,  G02B27/283 ,  G02B27/286 ,  G02B27/288 ,  G02B2207/114

Abstract: A photon entanglement router comprises a modified birefringent spectral filter followed by a polarization beam splitter (PBS). Frequency degenerate or non-degenerate entangled photons, generated by a collinear laser source and incident on one input port of the photon entanglement router, are comprised of congruent photons and/or incongruent photons. The invention adds a plurality of additional filter stacks at each output port such that they invert the action of the first birefringent stack at the input port. Intermediate output photons from the invention is input to two ports of an additional PBS where they are spatially projected according to their frequencies and polarizations. Two congruent photons of an entangled photon pair exit as an entangled pair in one direction, while two incongruent photons exit as an entangled pair in the orthogonal direction. If one photon is congruent and the other photon incongruent, the photons remain entangled but are spectrally divided into orthogonal directions. The invention's birefringent spectral filter accepts specific input frequencies from the ITU optical C-band grid for proper operation.

公开(公告)号：US09506806B2

公开(公告)日：2016-11-29

申请号：US14643926

申请日：2015-03-10

Applicant: CANON KABUSHIKI KAISHA

Inventor： Daisuke Sano

IPC: G01J4/00 ,  G01J4/04 ,  G02B5/30 ,  G01J4/02

CPC classification number: G01J4/04 ,  G01J4/02 ,  G01J2004/002 ,  G02B5/3083

Abstract: An polarization information acquisition unit includes a phase adjuster configured to adjust phases of two linearly polarized components of incident light, which oscillate in directions orthogonal to each other, a detector configured to transmit a polarized component oscillating in one direction and not to transmit a polarized component oscillating in a direction orthogonal to the one direction, the polarized components being included in light emitted from the phase adjuster, and a photoelectric convertor configured to photoelectrically convert a polarized component transmitted through the detector. The phase adjuster has at least three areas. The at least three areas include at least two areas having phase adjusting amounts different from each other, and at least two areas having an identical phase adjusting amounts and having slow axes whose directions are different from each other by 20 to 90 degrees inclusive.

Abstract translation: 偏振信息获取单元包括：相位调整器，被配置为调节在彼此正交的方向上振荡的入射光的两个线偏振分量的相位;检测器，被配置为传输在一个方向上振荡的偏振分量，而不透射偏振分量 在与所述一个方向正交的方向上振荡，所述偏振分量包括在从所述相位调制器发出的光中，以及光电转换器，被配置为对透过所述检测器的偏振分量进行光电转换。 相位调节器至少有三个区域。 所述至少三个区域包括具有彼此不同的相位调整量的至少两个区域，以及具有相同相位调整量的至少两个区域，并且具有方向彼此相差20到90度的慢轴。

公开(公告)号：US20160187531A1

公开(公告)日：2016-06-30

申请号：US14911361

申请日：2013-10-16

Applicant: HALLIBURTON ENERGY SERVICES INC.

Inventor： James M. Price ,  David L. Perkins

IPC: G01V8/20 ,  E21B49/08 ,  G01N21/21

CPC classification number: G01V8/20 ,  E21B49/081 ,  G01J4/02 ,  G01N21/21 ,  G01N2201/0683 ,  G01N2201/12 ,  G02B1/02 ,  G02B5/3025

Abstract: An intensity-independent optical computing device and method for performing multivariate optical computing based on changes in polarization of the reflected and/or transmitted electromagnetic radiation to thereby determine sample characteristics.

Abstract translation: 一种强度无关的光学计算装置和方法，用于基于反射和/或发射的电磁辐射的极化的变化执行多变量光学计算，从而确定样本特性。

公开(公告)号：US20150253192A1

公开(公告)日：2015-09-10

申请号：US14643926

申请日：2015-03-10

Applicant: CANON KABUSHIKI KAISHA

Inventor： Daisuke Sano

IPC: G01J4/04 ,  G02B5/30

CPC classification number: G01J4/04 ,  G01J4/02 ,  G01J2004/002 ,  G02B5/3083

Abstract: An polarization information acquisition unit includes a phase adjuster configured to adjust phases of two linearly polarized components of incident light, which oscillate in directions orthogonal to each other, a detector configured to transmit a polarized component oscillating in one direction and not to transmit a polarized component oscillating in a direction orthogonal to the one direction, the polarized components being included in light emitted from the phase adjuster, and a photoelectric convertor configured to photoelectrically convert a polarized component transmitted through the detector. The phase adjuster has at least three areas. The at least three areas include at least two areas having phase adjusting amounts different from each other, and at least two areas having an identical phase adjusting amounts and having slow axes whose directions are different from each other by 20 to 90 degrees inclusive.

Abstract translation: 偏振信息获取单元包括：相位调整器，被配置为调节在彼此正交的方向上振荡的入射光的两个线偏振分量的相位;检测器，被配置为传输在一个方向上振荡的偏振分量，而不透射偏振分量 在与所述一个方向正交的方向上振荡，所述偏振分量包括在从所述相位调制器发出的光中，以及光电转换器，被配置为对透过所述检测器的偏振分量进行光电转换。 相位调节器至少有三个区域。 所述至少三个区域包括具有彼此不同的相位调整量的至少两个区域，以及具有相同相位调整量的至少两个区域，并且具有方向彼此相差20到90度的慢轴。

公开(公告)号：US06804003B1

公开(公告)日：2004-10-12

申请号：US09405716

申请日：1999-09-24

Applicant: Haiming Wang ,  Patrick M. Maxton ,  Kenneth C. Johnson ,  Mehrdad Nikoonahad

Inventor： Haiming Wang ,  Patrick M. Maxton ,  Kenneth C. Johnson ,  Mehrdad Nikoonahad

IPC: G01J400

CPC classification number: G01J3/447 ,  G01B11/0641 ,  G01J4/02 ,  G01N21/21 ,  G01N21/211

Abstract: Two phase modulators or polarizing elements are employed to modulate the polarization of an interrogating radiation beam before and after the beam has been modified by a sample to be measured. Radiation so modulated and modified by the sample is detected and up to 25 harmonics may be derived from the detected signal. The up to 25 harmonics may be used to derive ellipsometric and system parameters, such as parameters related to the angles of fixed polarizing elements, circular deattenuation, depolarization of the polarizing elements and retardances of phase modulators. A portion of the radiation may be diverted for detecting sample tilt or a change in sample height. A cylindrical objective may be used for focusing the beam onto the sample to illuminate a circular spot on the sample. The above-described self-calibrating ellipsometer may be combined with another optical measurement instrument such as a polarimeter, a spectroreflectometer or another ellipsometer to improve the accuracy of measurement and/or to provide calibration standards for the optical measurement instrument. The self-calibrating ellipsometer as well as the combined system may be used for measuring sample characteristics such as film thickness and depolarization of radiation caused by the sample.

Abstract translation: 采用两相调制器或偏振元件来调制光束已被待测样品修改之前和之后的询问辐射束的极化。 检测由样本调制和修改的辐射，并且可以从检测到的信号导出多达25个谐波。 可以使用多达25个谐波来导出椭偏和系统参数，例如与固定偏振元件的角度相关的参数，圆形去衰减，偏振元件的去极化和相位调制器的延迟。 可以转移一部分辐射以检测样品倾斜或样品高度的变化。 可以使用圆柱形物镜将光束聚焦到样品上以照亮样品上的圆形斑点。 上述自校准椭偏仪可以与另一种光学测量仪器如偏振计，分光光度计或其他椭偏仪组合，以提高测量精度和/或为光学测量仪器提供校准标准。 自校准椭偏仪以及组合系统可用于测量样品特性，如样品的膜厚度和辐射的去极化。

公开(公告)号：US06611330B2

公开(公告)日：2003-08-26

申请号：US09778245

申请日：2001-02-06

Applicant: Shing Lee ,  Haiming Wang ,  Adam Norton ,  Mehrdad Nikoonahad

Inventor： Shing Lee ,  Haiming Wang ,  Adam Norton ,  Mehrdad Nikoonahad

IPC: G01N2121

CPC classification number: G01J4/02 ,  G01J3/447 ,  G01N21/21

Abstract: A polarized sample beam of broadband radiation is focused onto the surface of a sample and the radiation modified by the sample is collected by means of a mirror system in different planes of incidence. The sample beam focused to the sample has a multitude of polarization states. The modified radiation is analyzed with respect to a polarization plane to provide a polarimetric spectrum. Thickness and refractive information may then be derived from the spectrum. Preferably the polarization of the sample beam is altered only by the focusing and the sample, and the analyzing is done with respect to a fixed polarization plane. In the preferred embodiment, the focusing of the sample beam and the collection of the modified radiation are repeated employing two different apertures to detect the presence or absence of a birefringence axis in the sample. In another preferred embodiment, the above-described technique may be combined with ellipsometry for determining the thicknesses and refractive indices of thin films.

公开(公告)号：US20020008874A1

公开(公告)日：2002-01-24

申请号：US09778245

申请日：2001-02-06

Inventor： Shing Lee ,  Haiming Wang ,  Adam Norton ,  Mehrdad Nikoonahad

IPC: G01J004/00

CPC classification number: G01J4/02 ,  G01J3/447 ,  G01N21/21

Abstract: A polarized sample beam of broadband radiation is focused onto the surface of a sample and the radiation modified by the sample is collected by means of a mirror system in different planes of incidence. The sample beam focused to the sample has a multitude of polarization states. The modified radiation is analyzed with respect to a polarization plane to provide a polarimetric spectrum. Thickness and refractive information may then be derived from the spectrum. Preferably the polarization of the sample beam is altered only by the focusing and the sample, and the analyzing is done with respect to a fixed polarization plane. In the preferred embodiment, the focusing of the sample beam and the collection of the modified radiation are repeated employing two different apertures to detect the presence or absence of a birefringence axis in the sample. In another preferred embodiment, the above-described technique may be combined with ellipsometry for determining the thicknesses and refractive indices of thin films.

Abstract translation: 将宽带辐射的极化样品束聚焦到样品的表面上，并且通过不同入射平面的反射镜系统收集由样品改性的辐射。 聚焦到样品的样品束具有许多极化状态。 相对于偏振平面分析修改的辐射以提供偏振光谱。 然后可以从光谱导出厚度和折射信息。 优选地，样品光束的偏振仅由聚焦和样品改变，并且相对于固定的偏振平面进行分析。 在优选实施例中，使用两个不同的孔来重复样品束的聚焦和修改的辐射的收集，以检测样品中双折射轴的存在或不存在。 在另一个优选实施例中，上述技术可以与用于确定薄膜的厚度和折射率的椭偏仪组合。