公开(公告)号：US08604433B2

公开(公告)日：2013-12-10

申请号：US12861651

申请日：2010-08-23

Applicant: Ronald T. Logan, Jr. ,  Joseph R. Demers

Inventor： Ronald T. Logan, Jr. ,  Joseph R. Demers

IPC: G01T1/17 ,  G01J5/20 ,  H04N5/33

CPC classification number: G01J3/427 ,  A61B5/0507 ,  G01J3/10 ,  G01J3/42 ,  G01J3/4531 ,  G01N21/3581 ,  G01N21/3586 ,  G01N21/39

Abstract: An apparatus for analyzing, identifying or imaging an target including first and second laser beams coupled to a pair of photoconductive switches to produce CW signals in one or more bands in a range of frequencies greater than 100 GHz focused on and transmitted through or reflected from the target; and a detector for acquiring spectral information from signals received from the target and using a multi-spectral heterodyne process to generate an electrical signal representative of some characteristics of the target. The lasers are tuned to different frequencies and a frequency shifter in the path of one laser beam allows the terahertz beam to be finely adjusted in one or more selected frequency bands.

Abstract translation: 一种用于分析，识别或成像目标的装置，包括耦合到一对光电导开关的第一和第二激光束，以在大于100GHz的频率的范围内的一个或多个频带中产生CW信号，该信号集中于并经由 目标; 以及检测器，用于从从目标接收的信号中获取光谱信息，并使用多光谱外差处理产生表示目标的某些特性的电信号。 将激光器调谐到不同的频率，并且在一个激光束的路径中的频移器允许在一个或多个所选频带中微调太赫兹波束。

公开(公告)号：US20130215428A1

公开(公告)日：2013-08-22

申请号：US13820592

申请日：2011-09-06

Applicant: Ichiro Ishimaru

Inventor： Ichiro Ishimaru

IPC: A61B5/00

CPC classification number: A61B5/0075 ,  A61B5/14532 ,  A61B5/1455 ,  A61B2562/0233 ,  G01J3/0208 ,  G01J3/021 ,  G01J3/453 ,  G01J3/4531

Abstract: Multiple rays such as scattered lights and fluorescent lights emitted radially in a variety of directions from each bright point in a measurement area enter an objective lens, where the multiple rays are converted into a parallel beam. The parallel beam is reflected by both a reference mirror unit and an oblique mirror unit, and the reflected beams pass through an imaging lens to form an interference image on a light-receiving surface of a detection unit. The detection of the light intensity of the interference image on the light-receiving surface enables an acquisition of the interferogram (the waveform of the change of imaging intensity) in which the light intensity continuously changes. By Fourier-converting the interferogram, spectral characteristics can be obtained which show the relative intensities for each wavelength of the lights emitted from one bright point of an object to be measured.

Abstract translation: 在测量区域中的每个亮点沿各种方向径向发射的散射光和荧光灯的多个光线进入物镜，其中多个光线被转换成平行光束。 平行光束由参考镜单元和倾斜镜单元两者反射，并且反射光束通过成像透镜，以在检测单元的光接收表面上形成干涉图像。 对光接收表面上的干涉图像的光强的检测使得能够获得其中光强度连续变化的干涉图（成像强度的变化波形）。 通过对干涉图进行傅立叶变换，可以获得光谱特性，其显示从要测量的物体的一个亮点发射的光的每个波长的相对强度。

公开(公告)号：US20130087693A1

公开(公告)日：2013-04-11

申请号：US13646423

申请日：2012-10-05

Applicant: TELCORDIA TECHNOLOGIES, INC.

Inventor： Ted Woodward ,  Anjali Agarwal ,  Nicholas Peters

IPC: G01J1/04

CPC classification number: G01N21/17 ,  G01J1/0425 ,  G01J1/0459 ,  G01J1/42 ,  G01J1/58 ,  G01J3/4531 ,  G01N21/41 ,  G01S7/486 ,  G01S7/487 ,  G01S17/10 ,  G02B6/29338 ,  G02F1/3536 ,  G02F1/39 ,  G02F2001/392 ,  H01L31/0232 ,  H04B10/70

Abstract: Systems for enhancing the sensitivity of detecting an optical signal using nonlinear optics and method of performing the same. In one embodiment, a single-photon detection system includes an optical amplifier realized in a waveguide, and a photodetector coupled to an output of the optical amplifier. A light detection and ranging system includes the optical amplifier coupled to an optical source and one photodetector. In another embodiment, a photodetection system includes a plurality of optical frequency converters, coupled to an optical source, that sequentially convert a wavelength of photons of the optical source to a final wavelength, and a single-photon photodetector coupled to the optical frequency converters to detect single photons produced by the optical source. In another embodiment, an optical sensor includes an optical pump, and a transducer including an optical ring cavity coupled to the optical pump and configured to utilize optical four-wave mixing to detect an external stimulus.

公开(公告)号：US20130087692A1

公开(公告)日：2013-04-11

申请号：US13646404

申请日：2012-10-05

Applicant: Telcordia Technologies, Inc.

Inventor： Ted Woodward ,  Anjali Agarwal ,  Nicholas Peters

IPC: G01J1/04

CPC classification number: G01N21/17 ,  G01J1/0425 ,  G01J1/0459 ,  G01J1/42 ,  G01J1/58 ,  G01J3/4531 ,  G01N21/41 ,  G01S7/486 ,  G01S7/487 ,  G01S17/10 ,  G02B6/29338 ,  G02F1/3536 ,  G02F1/39 ,  G02F2001/392 ,  H01L31/0232 ,  H04B10/70

Abstract: Systems for enhancing the sensitivity of detecting an optical signal using nonlinear optics and method of performing the same. In one embodiment, a single-photon detection system includes an optical amplifier realized in a waveguide, and a photodetector coupled to an output of the optical amplifier. A light detection and ranging system includes the optical amplifier coupled to an optical source and one photodetector. In another embodiment, a photodetection system includes a plurality of optical frequency converters, coupled to an optical source, that sequentially convert a wavelength of photons of the optical source to a final wavelength, and a single-photon photodetector coupled to the optical frequency converters to detect single photons produced by the optical source. In another embodiment, an optical sensor includes an optical pump, and a transducer including an optical ring cavity coupled to the optical pump and configured to utilize optical four-wave mixing to detect an external stimulus.

公开(公告)号：US20120268745A1

公开(公告)日：2012-10-25

申请号：US13452686

申请日：2012-04-20

Applicant: Michael W. Kudenov

Inventor： Michael W. Kudenov

IPC: G01J3/45 ,  G01B9/02

CPC classification number: G01J3/4531 ,  G01J3/0208 ,  G01J3/0229 ,  G01J3/2803 ,  G01J3/447 ,  G01J2003/452

Abstract: Snapshot imaging Fourier transform spectrometers include a lens array that produces sub-images that are directed through a birefringent interferometer in orthogonal polarization eigenstates that acquire an optical path difference. Interference patterns based on this OPD can be Fourier transformed to obtain a spectral image. In some examples, polarizing gratings provide a spatial heterodyne frequency and offset the spectra.

Abstract translation: 快照成像傅里叶变换光谱仪包括透镜阵列，该透镜阵列产生通过双折射干涉仪引导获得光程差的正交偏振本征态的子图像。 基于该OPD的干涉图案可以进行傅里叶变换以获得光谱图像。 在一些示例中，偏振光栅提供空间外差频率并偏移光谱。

公开(公告)号：US20120105852A1

公开(公告)日：2012-05-03

申请号：US12914622

申请日：2010-10-28

Applicant: Abhijit Vishwas Patil ,  Sandip Maity ,  Veera Venkata Lakshmi Rajesh Langoju ,  Anusha Rammohan ,  Sameer Dinkar Vartak ,  Umakant Damodar Rapol

Inventor： Abhijit Vishwas Patil ,  Sandip Maity ,  Veera Venkata Lakshmi Rajesh Langoju ,  Anusha Rammohan ,  Sameer Dinkar Vartak ,  Umakant Damodar Rapol

IPC: G01N21/55

CPC classification number: G01N21/253 ,  B01L3/5027 ,  B01L3/5085 ,  B01L2300/0636 ,  B01L2300/0829 ,  B01L2300/089 ,  G01J3/021 ,  G01J3/1804 ,  G01J3/4531 ,  G01J2003/4534 ,  G01N21/05 ,  G01N21/45 ,  G01N21/55 ,  G01N21/553 ,  G01N21/554 ,  G01N2021/0346

Abstract: A detection system for a two-dimensional (2D) array is provided. The detection system comprises an electromagnetic radiation source, a phase difference generator, a detection surface having a plurality of sample fields that can receive samples, and an imaging spectrometer configured to discriminate between two or more spatially separated points.

Abstract translation: 提供了一种二维（2D）阵列的检测系统。 检测系统包括电磁辐射源，相位差发生器，具有可接收样本的多个采样场的检测表面，以及被配置为区分两个或更多个空间分离点的成像光谱仪。

公开(公告)号：US20110299089A1

公开(公告)日：2011-12-08

申请号：US13154304

申请日：2011-06-06

Applicant: Wei-Chih Wang ,  Chu-Yu Huang

Inventor： Wei-Chih Wang ,  Chu-Yu Huang

IPC: G01J3/45 ,  H05K13/00

CPC classification number: G01J3/4531 ,  Y10T29/49002

Abstract: Systems and methods for a compact Fourier transform spectrometer. A cell having two transparent walls and containing a liquid crystal medium is placed in a light beam. Applying a voltage across the cell causes the liquid crystal molecules to orient at a certain angle, wherein the angle is a function of the voltage applied. The refractive index if the cell is dependent upon the orientation of the liquid crystal molecules, and from the refractive index of the cell an optical path difference between ordinary and extraordinary waves can be calculated. Accordingly, any suitable optical path difference can be achieved by varying the voltage across the cell for a Fourier transform analysis.

Abstract translation: 用于紧凑型傅立叶变换光谱仪的系统和方法。 具有两个透明壁并含有液晶介质的电池被放置在光束中。 在电池上施加电压使液晶分子以一定角度取向，其中角度是所施加电压的函数。 如果电池取决于液晶分子的取向，并且根据电池的折射率，可以计算出普通波和非常波之间的光程差的折射率。 因此，通过改变用于傅立叶变换分析的单元的电压可以实现任何合适的光程差。

公开(公告)号：US08054453B2

公开(公告)日：2011-11-08

申请号：US12876242

申请日：2010-09-07

Applicant: Dale A. Harrison

Inventor： Dale A. Harrison

IPC: G01J3/00

CPC classification number: G01J3/2803 ,  G01J3/02 ,  G01J3/0208 ,  G01J3/021 ,  G01J3/0232 ,  G01J3/027 ,  G01J3/0286 ,  G01J3/0291 ,  G01J3/08 ,  G01J3/10 ,  G01J3/28 ,  G01J3/2823 ,  G01J3/36 ,  G01J3/42 ,  G01J3/4531 ,  G01N21/211 ,  G01N21/274 ,  G01N21/33 ,  G01N21/47 ,  G01N21/55 ,  G01N21/9501 ,  G01N2021/335

Abstract: A spectroscopy system is provided which is optimized for operation in the VUV region and capable of performing well in the DUV-NIR region. Additionally, the system incorporates an optical module which presents selectable sources and detectors optimized for use in the VUV and DUV-NIR. As well, the optical module provides common delivery and collection optics to enable measurements in both spectral regions to be collected using similar spot properties. The module also provides a means of quickly referencing measured data so as to ensure that highly repeatable results are achieved. The module further provides a controlled environment between the VUV source, sample chamber and VUV detector which acts to limit in a repeatable manner the absorption of VUV photons. The use of broad band data sets which encompass VUV wavelengths, in addition to the DUV-NIR wavelengths enables a greater variety of materials to be meaningfully characterized. Array based detection instrumentation may be exploited to permit the simultaneous collection of larger wavelength regions.

Abstract translation: 提供了一种光谱系统，其被优化用于在VUV区域中的操作并且能够在DUV-NIR区域中表现良好。 此外，该系统还包含一个光学模块，该模块提供可用于VUV和DUV-NIR中优化的可选择的源和检测器。 同样，光学模块提供通用的传送和收集光学器件，以使得能够使用类似的光点特性来收集两个光谱区域中的测量。 该模块还提供了快速参考测量数据的方法，以确保实现高度可重复的结果。 该模块还在VUV源，样品室和VUV检测器之间提供受控的环境，其作用是以可重复的方式限制VUV光子的吸收。 除了DUV-NIR波长之外，使用包含VUV波长的宽带数据集使得可以有意义地表征更多种类的材料。 可以利用基于阵列的检测仪器来允许同时收集更大的波长区域。

公开(公告)号：US20110199616A1

公开(公告)日：2011-08-18

申请号：US13123938

申请日：2009-09-01

Applicant: Elodie Cansot ,  Emmanuel Christophe ,  Alain Rosak

Inventor： Elodie Cansot ,  Emmanuel Christophe ,  Alain Rosak

IPC: G01J3/453

CPC classification number: G01J3/4535 ,  G01J3/453 ,  G01J3/4531 ,  G01J3/457

Abstract: According to a first aspect the invention relates to a reconstruction process of a narrow-band signal acquired by an instrument producing irregular sampling, in which two series of samples are acquired at the same sampling period, the two series being offset relative to one another such that the sampling errors are identical or quasi identical over both series. According to a second aspect, the invention relates to an instrument configured to carry out the process according to the first aspect of the invention.

Abstract translation: 根据第一方面，本发明涉及通过产生不规则采样的仪器获取的窄带信号的重建过程，其中在相同采样周期获取两个系列的样本，两个系列相对于彼此偏移，如 两个系列的采样误差相同或相似。 根据第二方面，本发明涉及一种被配置为执行根据本发明的第一方面的方法的仪器。

公开(公告)号：US20110032530A1

公开(公告)日：2011-02-10

申请号：US12852492

申请日：2010-08-08

Applicant: Christophe Buisset ,  Denis Simeoni ,  Patrick Astruc ,  Cyril Degrelle

Inventor： Christophe Buisset ,  Denis Simeoni ,  Patrick Astruc ,  Cyril Degrelle

IPC: G01J3/45

CPC classification number: G01J3/45 ,  G01J3/4531

Abstract: A static interferometer comprises an entrance pupil, a splitter plate, a first mirror and a second mirror which are arranged in such a way that light beams originating from a collimated source are divided on the splitter plate, reflect on each of the mirrors and recombine while interfering at the output of the interferometer. The interferometer comprises a prismatic plate of index n comprising a variable thickness ej, the first beam passing through the prismatic plate before reflecting on a reflecting surface of the first mirror, the reflecting surface comprising a plurality of zones, each zone j being situated at a mean distance Δj from a reference plane. The reference plane being perpendicular to an optical axis and corresponding to a position of a plane mirror for which the optical path difference between the two interfering reflected beams is zero, each thickness ej being substantially equal to Δj·n/(n−1).

Abstract translation: 静态干涉仪包括入射光瞳，分离板，第一反射镜和第二反射镜，这些方式使得源自准直光源的光束在分离板上分开，在每个反射镜上反射并重新组合，同时 干扰了干涉仪的输出。 干涉仪包括索引n的棱镜板，其包括可变厚度ej，第一光束在第一反射镜的反射表面上反射之前通过棱镜板，反射表面包括多个区域，每个区域j位于 平均距离＆Dgr; j从参考平面。 参考平面垂直于光轴并对应于两个干涉反射光束之间的光程差为零的平面镜的位置，每个厚度ej基本上等于＆Dgr; j·n /（n-1） ）。