公开(公告)号：US09074936B2

公开(公告)日：2015-07-07

申请号：US12147842

申请日：2008-06-27

Applicant: Keith A. Nelson ,  Kenan Gundogdu ,  Katherine W. Stone ,  Daniel B. Turner

Inventor： Keith A. Nelson ,  Kenan Gundogdu ,  Katherine W. Stone ,  Daniel B. Turner

IPC: G01J3/28 ,  G01J3/433 ,  G01J3/02 ,  G01J3/12

CPC classification number: G01J3/433 ,  G01J3/02 ,  G01J3/0224 ,  G01J2003/1286 ,  G02F2203/18 ,  G02F2203/26

Abstract: Methods and apparatus are disclosed, and include: (a) separating an input electromagnetic waveform into a plurality of intermediate waveforms, each of the intermediate waveforms being spatially separated from one another; (b) dispersing frequency components of each intermediate waveform onto different regions of a spatial light modulator and modulating at least some of the dispersed frequency components with the spatial light modulator; and (c) recombining the dispersed frequency components for each of the intermediate waveforms to produce a plurality of temporally shaped output waveforms.

Abstract translation: 公开了方法和装置，包括：（a）将输入电磁波分离为多个中间波形，每个中间波形在空间上彼此分离; （b）将每个中间波形的频率分量分散到空间光调制器的不同区域，并用空间光调制器调制至少一些分散的频率分量; 和（c）将每个中间波形的分散频率分量重新组合以产生多个时间成形的输出波形。

公开(公告)号：US09052239B2

公开(公告)日：2015-06-09

申请号：US13047462

申请日：2011-03-14

Applicant: Martin T. Zanni ,  Peter Hamm ,  Jan Helbing

Inventor： Martin T. Zanni ,  Peter Hamm ,  Jan Helbing

IPC: G01B9/02 ,  G01J3/457 ,  G01J3/433

CPC classification number: G01J3/457 ,  G01J3/433

Abstract: A multidimensional spectrometer encodes frequency information into laser pulses so that a frequency insensitive detector may be used to collect data for a multi-dimensional spectrograph only from intensity information and knowledge of a modulation providing the encoding. In one embodiment the frequency encoding may be done by a conventional interferometer greatly simplifying construction of the spectrometer.

Abstract translation: 多维光谱仪将频率信息编码成激光脉冲，使得频率不敏感检测器可以仅用于从提供编码的调制的强度信息和知识中收集用于多维光谱仪的数据。 在一个实施例中，频率编码可以通过传统的干涉仪来完成，这大大简化了光谱仪的结构。

公开(公告)号：US08896835B2

公开(公告)日：2014-11-25

申请号：US13723367

申请日：2012-12-21

Applicant: Horiba, Ltd.

Inventor： Takuya Ido ,  Tetsuya Mori

IPC: G01N21/00 ,  G01B11/14 ,  G01N21/35 ,  G01J3/433 ,  G01N21/59

CPC classification number: G01N21/59 ,  G01B11/14 ,  G01J3/4338 ,  G01N21/3504 ,  G01N21/39

Abstract: A gas measurement apparatus measures a target gas. The gas measurement apparatus includes a light source, a first light receiving apparatus, a first phase-sensitive detection apparatus, an R calculation unit, and a setting unit. The light source oscillates a laser light that has a central wavelength determined by a main current and is modulated according to a modulation current, with the central wavelength being varied. The first light receiving apparatus outputs a detection signal according to an intensity of the laser light transmitted through a standard sample. The first phase-sensitive detection apparatus obtains a second harmonic component oscillated at a harmonic frequency ω2 twice as large as a modulation frequency ω1. The R calculation unit calculates a peak-bottom ratio R. The setting unit sets a width of wavelength modulation of the laser light so that the peak-bottom ratio R satisfies a predetermined condition.

Abstract translation: 气体测量装置测量目标气体。 气体测量装置包括光源，第一光接收装置，第一相敏检测装置，R计算单元和设置单元。 光源振荡具有由主电流确定的中心波长的激光，并根据调制电流进行调制，中心波长变化。 第一光接收装置根据通过标准样品透射的激光的强度输出检测信号。 第一相敏检测装置获得以调制频率ω1的两倍大的谐波频率ω2振荡的二次谐波分量。 R计算单元计算峰 - 底比R.设定单元设定激光的波长调制宽度，使得峰 - 底比R满足预定条件。

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：US20140185035A1

公开(公告)日：2014-07-03

申请号：US14134518

申请日：2013-12-19

Applicant: Daniel Depenheuer ,  Thomas Hankiewicz ,  Frank Probst

Inventor： Daniel Depenheuer ,  Thomas Hankiewicz ,  Frank Probst

IPC: G01J3/433 ,  G01J3/42

CPC classification number: G01J3/4338 ,  G01J3/42 ,  G01J3/433 ,  G01N21/39 ,  G01N21/47

Abstract: A method in which the wavelength of the light of a tunable light source is varied periodically over an absorption line of interest for the gas component to measure the concentration of a gas component in a measurement gas based on one of two measurement methods of direct absorption spectroscopy and wavelength modulation spectroscopy and, where in the case of wavelength modulation spectroscopy, the wavelength of the light is additionally sinusoidally modulated at a high frequency and with a small amplitude, where the intensity of the light is detected after transradiation of the measurement gas and processed to yield a measurement result, and where in order to increase the accuracy and reliability of the measurement, the two measurement methods are applied simultaneously during each period, or alternately in consecutive periods, and their results are combined by averaging to form the measurement result.

Abstract translation: 基于直接吸收光谱法的两种测量方法之一，可调光源的波长在气体成分的感兴趣吸收线周期性地变化以测量测量气体中的气体成分的浓度的方法 和波长调制光谱，并且在波长调制光谱学的情况下，光的波长被额外地以高频率和小幅度正弦调制，其中在测量气体经过辐射之后检测到光的强度并且被处理 以产生测量结果，并且为了提高测量的精度和可靠性，在每个周期或者连续周期中同时应用两种测量方法，并且通过平均来组合它们的结果以形成测量结果。

公开(公告)号：US08399835B2

公开(公告)日：2013-03-19

申请号：US12487876

申请日：2009-06-19

Applicant: Masaichi Hashimoto ,  Akiyoshi Irisawa

Inventor： Masaichi Hashimoto ,  Akiyoshi Irisawa

IPC: G01J3/433

CPC classification number: G01N21/3581

Abstract: A trigger signal generation device restrains a jitter from being generated in a measurement result of light, such as terahertz light, that has transmitted through a device under test. The device includes a first photoelectric conversion unit that applies photoelectric conversion to a probe light pulse, a second photoelectric conversion unit that applies photoelectric conversion to a pump light pulse, a first amplification unit that amplifies an output from the first photoelectric conversion unit, and a second amplification unit that amplifies an output from the second photoelectric conversion unit. The device also includes a trigger signal output unit that outputs a cross-correlation of outputs of the first amplification unit and the second amplification unit as a trigger signal, and a period difference adjustment unit that adjusts a difference in periods.

Abstract translation: 触发信号发生装置抑制在通过被测器件传输的诸如太赫兹光之类的光的测量结果中产生抖动。 该装置包括对探测光脉冲施加光电转换的第一光电转换单元，对泵浦光脉冲施加光电转换的第二光电转换单元，放大第一光电转换单元的输出的第一放大单元和 第二放大单元，其放大来自第二光电转换单元的输出。 该装置还包括触发信号输出单元，其输出作为触发信号的第一放大单元和第二放大单元的输出的互相关，以及调整周期差的周期差调整单元。

公开(公告)号：US07782460B2

公开(公告)日：2010-08-24

申请号：US11837753

申请日：2007-08-13

Applicant: Rocco DiFoggio ,  Sebastian Csutak

Inventor： Rocco DiFoggio ,  Sebastian Csutak

IPC: G01N21/25 ,  G01N21/00 ,  G01J3/42 ,  G01J3/427 ,  G01J3/433 ,  G01J3/447 ,  G01V5/08 ,  G01V5/00 ,  G01V5/04

CPC classification number: G01N21/31 ,  G01N21/39 ,  G01N21/65 ,  G01N21/658 ,  G01N2021/651 ,  G01V8/02

Abstract: Apparatus and method for downhole formation testing using a spectrometer includes a carrier conveyable into a well borehole that traverses a subterranean formation of interest, a plurality of semiconductor light sources disposed on the carrier, a fluid sample cell that receives light emitted from the plurality of semiconductor light sources, and at least one photodetector that detects light emitted from the plurality of semiconductor light sources and after the light interacts with a fluid in the fluid sample cell.

Abstract translation: 用于使用光谱仪进行井下成形测试的装置和方法包括可输送到穿过感兴趣地下地层的井眼中的载体，设置在载体上的多个半导体光源，接收从多个半导体发射的光的流体样品池 光源，以及至少一个光检测器，其检测从多个半导体光源发射的光，并且在光与流体样品池中的流体相互作用之后。

公开(公告)号：US20100014078A1

公开(公告)日：2010-01-21

申请号：US12303526

申请日：2007-06-08

Applicant: Kishan Dholakia ,  Phillip Ronald Thomas Jess ,  Michael Mazilu

Inventor： Kishan Dholakia ,  Phillip Ronald Thomas Jess ,  Michael Mazilu

IPC: G01J3/44 ,  G01N21/65 ,  G01J3/433

CPC classification number: G01J3/0297 ,  B01L3/5027 ,  G01J3/28 ,  G01J3/433 ,  G01J3/44 ,  G01J3/4412 ,  G01N21/65 ,  G01N2021/651 ,  G01N2021/656

Abstract: A micro-fluidic system comprising means for optically trapping a particle and a Raman excitation source for causing Raman scatter from the particle whilst it is in the optical trap.

Abstract translation: 微流体系统包括用于光学捕获颗粒和拉曼激发源的装置，用于在颗粒处于光阱中时引起来自颗粒的拉曼散射。

公开(公告)号：US07647815B2

公开(公告)日：2010-01-19

申请号：US11797375

申请日：2007-05-03

Applicant: Robert Anthony Crane

Inventor： Robert Anthony Crane

IPC: G01J3/433

CPC classification number: G01N29/42 ,  G01N29/036 ,  G01N29/222 ,  G01N29/348 ,  G01N2291/0215

Abstract: A method of identifying and determining the concentrations of multiple species in a gas sample, includes providing a spectrophone assembly having a detector chamber, supplying the gas sample to the detector chamber and simultaneously passing a plurality of radiations of different wavelengths into the detector chamber to produce multiple acoustic resonances of different frequencies. Acoustic resonances in the detector chamber are simultaneously sensed to produce corresponding electrical signals, and the electrical signals are analysed to identify the species present in the gas sample and determine the concentration of each specie.

Abstract translation: 识别和确定气体样品中多种物质的浓度的方法包括提供具有检测器室的分光镜组件，将气体样品供应到检测器室并同时将多个不同波长的辐射传递到检测器室中以产生 不同频率的多声共振。 同时检测检测器室中的声共振以产生相应的电信号，并分析电信号以识别气体样品中存在的物质并确定每种物质的浓度。

公开(公告)号：US20050046852A1

公开(公告)日：2005-03-03

申请号：US10925203

申请日：2004-08-24

Applicant: Rikard Larking ,  Stefan Lundqvist ,  Per-Arne Thorsen

Inventor： Rikard Larking ,  Stefan Lundqvist ,  Per-Arne Thorsen

IPC: G01J3/28 ,  G01J3/433 ,  G01N21/27 ,  G01N21/35 ,  G01N21/39 ,  G01N21/61

CPC classification number: G01N21/274 ,  G01J3/433 ,  G01J2003/2866 ,  G01N21/3504 ,  G01N21/39 ,  G01N2021/399

Abstract: In a wavelength modulation spectroscopy method and system the light of a tunable light source is modulated with a frequency f0, while the wavelength is swept over an interaction feature of a sample to be measured. The light of the light source is passed to a sample for interacting and thereafter detected and demodulated at a higher harmonic Nf0. To suppress effects of fluctuations of the optical transmission of the system on the measurement, originating from varying dust loads, high temperature, gas turbulence etc. in the measurement path (3), a burst signal in form of an envelope modulated pilot tone is added to the modulation of the light (1) of the light source (2) synchronously with the wavelength sweeps at a wavelength outside the interaction feature of the sample. The injected burst signal is at the detection frequency Nf0, where N≧2, and is detected together with the measured spectrum from the sample and act as absorption normal, which the spectrum can be calibrated against.

Abstract translation: 在波长调制光谱方法和系统中，可调谐光源的光以频率f0被调制，而波长被扫过待测样品的相互作用特征。 光源的光被传递到样品进行相互作用，然后在较高谐波Nf0处检测和解调。 为了抑制系统的光传输的波动对来自测量路径（3）中的灰尘负荷变化，高温，气体湍流等的测量的影响，添加了包络调制导频的形式的突发信号 与在样品的相互作用特征外的波长的波长扫描同步地调制光源（2）的光（1）。 注入的突发信号处于检测频率Nf0，其中N> = 2，并与来自样品的测量光谱一起检测，并作为吸收法线，谱可以校准。