公开(公告)号：US09002151B2

公开(公告)日：2015-04-07

申请号：US13646450

申请日：2012-10-05

Applicant: Telcordia Technologies, Inc.

Inventor： Ted Woodward ,  Anjali Agarwal ,  Nicholas Peters

IPC: G02B6/24 ,  G02F1/365 ,  G01J3/45 ,  G01N21/17 ,  H01L31/0232 ,  G01J1/42 ,  G02B6/293 ,  G01J3/453 ,  G01J1/04 ,  G01N21/41 ,  G01J1/58 ,  G02F1/35 ,  G01S17/10 ,  G01S7/486 ,  G01S7/487 ,  H04B10/70 ,  G02F1/39

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：US08964187B2

公开(公告)日：2015-02-24

申请号：US13578379

申请日：2011-02-07

Applicant: Manuel Fendler ,  Gilles Lafargues ,  Nicolas Guerineau ,  Sylvain Rommeluere ,  Florence De La Barriere

Inventor： Manuel Fendler ,  Gilles Lafargues ,  Nicolas Guerineau ,  Sylvain Rommeluere ,  Florence De La Barriere

IPC: G01J3/45 ,  G01J3/26 ,  G01J3/02 ,  G01J3/28 ,  G01J3/453

CPC classification number: G01J3/26 ,  G01J3/02 ,  G01J3/021 ,  G01J3/0256 ,  G01J3/0259 ,  G01J3/2823 ,  G01J3/4531 ,  H01L2224/16225

Abstract: A micro-machined optical measuring device including: a set of photosensitive detector elements situated on a given face of a first support; a second support, assembled to the first support, forming a prism and including a first face through which a visible radiation is intended to penetrate and a second face, forming a non-zero angle θ with the first face and a non-zero angle α with the given face of the first support, the second face being semi-reflective, the first support and the second support being positioned such that an interferometric cavity is made between the second face and the given face, the distance between the given face of the first support and the second face of the second support varying regularly.

Abstract translation: 一种微加工光学测量装置，包括：位于第一支撑件的给定面上的一组光敏检测元件; 第二支撑件，组装到第一支撑件上，形成棱镜并且包括可见光辐射穿过的第一面和形成非零角度的第二面; 具有第一面和与第一支撑件的给定面的非零角度α，第二面是半反射的，第一支撑件和第二支撑件被定位成使得在第二面和第二面之间形成干涉腔， 给定的面部，第一支撑件的给定面与第二支撑件的第二面之间的距离变化规律。

公开(公告)号：US08957377B2

公开(公告)日：2015-02-17

申请号：US14054599

申请日：2013-10-15

Applicant: Ronald T. Logan ,  Joseph R. Demers

Inventor： Ronald T. Logan ,  Joseph R. Demers

IPC: G01N21/39 ,  G01J3/427 ,  A61B5/05 ,  G01J3/10 ,  G01J3/42 ,  G01J3/453 ,  G01N21/3581 ,  G01N21/3586

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：US08917396B2

公开(公告)日：2014-12-23

申请号：US13055898

申请日：2009-07-20

Applicant: Nathalie Picqué ,  Guy Guelachvili ,  Julien Mandon

Inventor： Nathalie Picqué ,  Guy Guelachvili ,  Julien Mandon

IPC: G01B9/02 ,  G01J3/453

CPC classification number: G01J3/453

Abstract: An embodiment relates to a Fourier transform spectrometer comprising: a coherent light source; an interferometer adapted to separate the coherent light source into two or more parts in order to generate through frequency or phase-induced effects, interferences between the two or more parts; detection means adapted to detect the interferences, wherein the coherent light source comprises a frequency comb generator having a frequency repetition rate, and the detection means are adapted to detect the beating of pairs of frequencies of the frequency comb separated by the frequency repetition rate or a multiple of the frequency repetition rate.

Abstract translation: 一个实施例涉及一种傅里叶变换光谱仪，包括：相干光源; 干涉仪，其适于将相干光源分离成两个或更多个部分，以便产生通过频率或相位诱导的效应，两个或更多个部分之间的干扰; 检测装置，其适于检测干扰，其中所述相干光源包括具有频率重复率的频率梳发生器，并且所述检测装置适于检测由频率重复率分离的频率梳对频率的跳动，或者 频率重复率的倍数。

公开(公告)号：US08901495B2

公开(公告)日：2014-12-02

申请号：US13076107

申请日：2011-03-30

Applicant: Charles G. Stevens ,  Joseph W. Tringe

Inventor： Charles G. Stevens ,  Joseph W. Tringe

IPC: G01J1/10 ,  G01J3/10 ,  G01J3/453

CPC classification number: G01J3/453 ,  G01J3/10 ,  G01J3/4338 ,  G01N21/35

Abstract: In one embodiment, a heterodyne detection system for detecting light includes a first input aperture adapted for receiving a first light from a scene input, a second input aperture adapted for receiving a second light from a local oscillator input, a broadband local oscillator adapted for providing the second light to the second input aperture, a dispersive element adapted for dispersing the first light and the second light, and a final condensing lens coupled to an infrared detector. The final condensing lens is adapted for concentrating incident light from a primary condensing lens onto the detector, and the detector is a square-law detector capable of sensing the frequency difference between the first light and the second light. More systems and methods for detecting light are disclosed according to more embodiments.

Abstract translation: 在一个实施例中，用于检测光的外差检测系统包括适于接收来自场景输入的第一光的第一输入孔，适于接收来自本地振荡器输入的第二光的第二输入孔，适于提供 第二光到第二输入孔，适于分散第一光和第二光的分散元件，以及耦合到红外检测器的最终聚光透镜。 最终聚光透镜适用于将来自主聚焦透镜的入射光集中到检测器上，检测器是能够检测第一光与第二光之间的频差的平方律检测器。 根据更多实施例公开了用于检测光的更多系统和方法。

公开(公告)号：US08873043B2

公开(公告)日：2014-10-28

申请号：US13912548

申请日：2013-06-07

Applicant: University of Virginia Patent Foundation

Inventor： Brooks Hart Pate ,  Justin L. Neill

IPC: G01J3/30 ,  G01J3/443 ,  G01J3/453 ,  G01J3/433 ,  G01N21/35 ,  G01J3/28

CPC classification number: G01J3/443 ,  G01J3/2889 ,  G01J3/4338 ,  G01J3/453 ,  G01N21/35 ,  G01N21/3586 ,  G01N2021/3595

Abstract: An emission can be obtained from a sample in response to excitation using a specified range of excitation frequencies. Such excitation can include generating a specified chirped waveform and a specified downconversion local oscillator (LO) frequency using a digital-to-analog converter (DAC), upconverting the chirped waveform via mixing the chirped waveform with a specified upconversion LO frequency, frequency multiplying the upconverted chirped waveform to provide a chirped excitation signal for exciting the sample, receiving an emission from sample, the emission elicited at least in part by the chirped excitation signal, and downconverting the received emission via mixing the received emission with a signal based on the specified downconversion LO signal to provide a downconverted emission signal within the bandwidth of an analog-to-digital converter (ADC). The specified chirped waveform can include a first chirped waveform during a first duration, and a second chirped waveform during a second duration.

Abstract translation: 可以使用特定范围的激发频率响应于激发而从样品获得发射。 这种激励可以包括使用数模转换器（DAC）产生指定的啁啾波形和指定的下变频本地振荡器（LO）频率，通过将啁啾波形与指定的上变频LO频率混频来上变频啁啾波形， 上变频啁啾波形以提供用于激发采样的啁啾激励信号，接收来自采样的发射，至少部分地由啁啾激励信号引起的发射，以及通过基于指定的信号将接收到的发射与信号进行混合来下变频接收的发射 下变频LO信号，以在模数转换器（ADC）的带宽内提供下变频发射信号。 指定的啁啾波形可以包括第一持续时间期间的第一啁啾波形和第二持续时间内的第二啁啾波形。

公开(公告)号：US20140264032A1

公开(公告)日：2014-09-18

申请号：US13841316

申请日：2013-03-15

Applicant: Mohammad Neshat ,  N. Peter Armitage

Inventor： Mohammad Neshat ,  N. Peter Armitage

IPC: G01J3/30 ,  G01J3/453

CPC classification number: G01J3/42 ,  G01N21/211 ,  G01N21/3586

Abstract: A terahertz time-domain spectroscopic ellipsometry system includes a sample stage, a terahertz emitter configured to provide pulses of terahertz radiation with preselected polarization components to illuminate a sample on the sample stage along an incident direction, and a coherent terahertz detection system arranged to coherently detect pulses of terahertz radiation from the terahertz emitter along an emerging direction after at least one of reflecting from or passing through the sample. The sample stage is rotatable to vary a relative angle between the incident direction and the emerging direction, and the coherent terahertz detection system substantially maintains alignment for amplitude and polarization detection as the relative angle is varied.

Abstract translation: 太赫兹时域分光椭圆测量系统包括样本级，太赫兹发射器，被配置为提供具有预选偏振分量的太赫兹辐射脉冲，以沿着入射方向照射样本台上的采样;以及相干太赫兹检测系统，被布置成相干检测 从反射或通过样品的至少一个之后沿着新兴方向从太赫兹发射器的太赫兹辐射的脉冲。 样品台可旋转以改变入射方向和出射方向之间的相对角度，并且当相对角度变化时，相干太赫兹检测系统基本上保持用于幅度和偏振检测的对准。

公开(公告)号：US20140152993A1

公开(公告)日：2014-06-05

申请号：US14131828

申请日：2012-06-14

Applicant: Yusuke Hirao

Inventor： Yusuke Hirao

IPC: G01J3/453 ,  G01J9/02

CPC classification number: G01J3/4532 ,  G01J3/027 ,  G01J3/0289 ,  G01J3/45 ,  G01J3/4535 ,  G01J9/02

Abstract: An optical path of measurement light emitted from a measurement light source is overlaid by a beam combiner on an optical path of reference light emitted from a reference light source. The measurement light emitted from the measurement light source includes light in the sensitivity wavelength range (S1) of a measurement light detector and light in the sensitivity wavelength range (S2) of a reference light detector. An interferometer includes a wavelength separation filter that cuts light in at least a part of the sensitivity wavelength range (S2) of the reference light detector, of light included in the wavelength range of the measurement light.

Abstract translation: 从测量光源发射的测量光的光路由从参考光源发射的参考光的光路上的光束组合器重叠。 从测量光源发射的测量光包括测量光检测器的灵敏度波长范围（S1）中的光和参考光检测器的灵敏度波长范围（S2）中的光。 干涉仪包括：波长分离滤光器，其在包括在测量光的波长范围内的光中，在参考光检测器的灵敏度波长范围（S2）的至少一部分上切割光。

公开(公告)号：US08665446B2

公开(公告)日：2014-03-04

申请号：US12994607

申请日：2009-05-07

Applicant: Tobias Brixner ,  Ulrike Selig ,  Florian Langhojer ,  Frank Dimler

Inventor： Tobias Brixner ,  Ulrike Selig ,  Florian Langhojer ,  Frank Dimler

IPC: G01J3/453

CPC classification number: G01J3/433

Abstract: An apparatus and a method for coherent multi-dimensional optical spectroscopy employs a beam splitter for splitting a base light pulse into at least first to fourth light pulses, three of which are suitable for interaction with a sample, lens system focuses the first to fourth light pulses at a sample site, and an optical delay varies the arrival times of the first to fourth light pulses at the sample. A detector detects an interference signal. The beam splitter is a non-diffractive optical element. The light pulses, at least along part of their light paths, are guided pairwisely such that changes in the optical path length due to vibration of the beam splitter or due to the delay element are identical for each pair of pulses, where the pulse pairs compensate for any change in the interference signal due to a change of the arrival times of the pair of pulses.

Abstract translation: 用于相干多维光谱的装置和方法使用分束器将基本光脉冲分成至少第一至第四光脉冲，其中三个适合于与样本相互作用，透镜系统将第一至第四光 在采样点处的脉冲和光学延迟改变样品处的第一至第四光脉冲的到达时间。 检测器检测到干扰信号。 分束器是非衍射光学元件。 光脉冲至少沿着其光路的一部分被成对引导，使得由于分束器的振动或者由于延迟元件引起的光路长度的变化对于每对脉冲是相同的，其中脉冲对补偿 对于由于该对脉冲的到达时间的变化引起的干扰信号的任何变化。

公开(公告)号：US20050275847A1

公开(公告)日：2005-12-15

申请号：US10508960

申请日：2004-10-06

Applicant: Danny Moshe

Inventor： Danny Moshe

IPC: G01J3/28 ,  G01J3/453 ,  G01J3/45

CPC classification number: G01J3/4535 ,  G01J3/02 ,  G01J3/0202 ,  G01J3/021 ,  G01J3/0237 ,  G01J3/0259 ,  G01J3/0291 ,  G01J3/2823 ,  G01J3/4532

Abstract: Real time high speed high resolution hyper-spectral imaging. (a) electromagnetic radiation collimating element (16), collimating electromagnetic radiation (44) emitted by objects (12) in a scene or a sample (14); (b) optical interferometer (18), receiving and dividing collimated object emission beam, generating interference images, and piezoelectrically determining and changing magnitude of optical path difference of divided collimated object emission beam; optical interferometer (18) includes: beam splitter (20′), fixed mirror (22), movable mirror (24), piezoelectric motor (26), displacing movable mirror (24) along axis (60), distance change feedback sensor (28), sensing and measuring change in distance of movable mirror (24) along axis (60), piezoelectric motor controller (30), actuating and controlling piezoelectric motor (26); and thermo-mechanically stable optical interferometer mount (32A); (c) camera optics (34), focusing interference images of each optical path difference; (d) detector (36), recording interference images; processing unit (38), and (f) display (40).

Abstract translation: 实时高速高分辨率超光谱成像。 （a）电磁辐射准直元件（16），对由物体（12）在场景或样本（14）中发射的电磁辐射（44）进行准直; （b）光学干涉仪（18），接收和分割准直物体发射光束，产生干涉图像，以及压电确定和改变分割的准直对象发射光束的光程差大小; 光干涉仪（18）包括：分束器（20'），固定反射镜（22），可移动反射镜（24），压电马达（26），沿轴线（60）移动可移动镜（24），距离变化反馈传感器 ），感测和测量可移动镜（24）沿轴线（60）的距离变化，压电马达控制器（30），致动和控制压电马达（26）; 和热机械稳定的光学干涉仪安装座（32A）; （c）相机光学器件（34），聚焦每个光程差的干涉图像; （d）检测器（36），记录干涉图像; 处理单元（38）和（f）显示器（40）。