公开(公告)号：US06222632B1

公开(公告)日：2001-04-24

申请号：US09287651

申请日：1999-04-07

申请人： Dmitry V. Bakin

发明人： Dmitry V. Bakin

IPC分类号： G01J345

CPC分类号： G01J3/453

摘要： An instrument for determining spectral content of an input light. The instrument has a rotating optical element that separates an input light into two partial beams and thereby introduces a variable OPD between the partial beams. The instrument then records an interferogram as a function of the variable OPD and thereby Fourier or Fast Fourier transforms the interferogram into a spectrogram so that the spectral content of the input light is revealed.

摘要翻译： 用于确定输入光的光谱含量的仪器。 仪器具有旋转的光学元件，其将输入光分离成两个部分光束，从而在部分光束之间引入可变OPD。 然后，仪器记录作为可变OPD的函数的干涉图，由此傅立叶或快速傅里叶变换干涉图到光谱图中，以便显示输入光的光谱含量。

公开(公告)号：US06697159B2

公开(公告)日：2004-02-24

申请号：US09907343

申请日：2001-07-17

申请人： Rongqing Hui

发明人： Rongqing Hui

IPC分类号： G01J345

CPC分类号： G01J3/2803 ,  G01J3/26 ,  G01J3/28 ,  G01J3/32 ,  G02B2006/12195

摘要： An Optical Domain Signal Analyzer, having an optical filter, a dispersive element and a detector is utilized to provide high resolution spectrum analysis over a wide optical bandwidth. The optical domain signal analyzer broadly includes an optical filter for providing wavelength samples of a received optical signal, a dispersive element for receiving the samples and dispersing the samples, and a detector for receiving the dispersed signal and for providing electrical signals representative of the dispersed sample. A preferred embodiment includes a processor for receiving the electrical signal and calculating the characteristics of the spectrum.

摘要翻译： 具有光学滤波器，色散元件和检测器的光域信号分析器被用于在宽的光学带宽上提供高分辨率的光谱分析。 光域信号分析仪广泛地包括用于提供接收到的光信号的波长样本的光学滤波器，用于接收样本和分散样本的分散元件，以及用于接收分散信号并提供代表分散样品的电信号的检测器 。 优选实施例包括用于接收电信号并计算频谱的特性的处理器。

公开(公告)号：US06646746B1

公开(公告)日：2003-11-11

申请号：US09678432

申请日：2000-10-02

申请人： Wayne V. Sorin ,  Bogdan Szfraniec ,  Douglas M. Baney

发明人： Wayne V. Sorin ,  Bogdan Szfraniec ,  Douglas M. Baney

IPC分类号： G01J345

CPC分类号： H04B10/60 ,  G01J9/04 ,  H04B10/64

摘要： An optical heterodyne detection system in accordance with an embodiment of the invention includes two optical receivers for separately measuring the power of an input signal and a local oscillator signal before the signals are combined. The measurements of the input signal and the local oscillator signal are then utilized to enhance the heterodyne signal to noise ratio by removing the intensity noise contributed by the input signal and the local oscillator signal. By measuring portions of the input signal power and the local oscillator signal power and then subtracting out the scaled quantities from the photocurrent measurement during signal processing, the signal to noise of the heterodyne signal is improved beyond that which is accomplished by known balanced receivers.

摘要翻译： 根据本发明实施例的光外差检测系统包括两个光接收器，用于在组合信号之前单独测量输入信号的功率和本地振荡器信号。 然后通过去除由输入信号和本地振荡器信号贡献的强度噪声来利用输入信号和本地振荡器信号的测量值来增强外差信噪比。 通过测量输入信号功率和本地振荡器信号功率的部分，然后在信号处理期间从光电流测量中减去定标数量，外差信号的信噪比被改善，超过了已知的平衡接收机所完成的。

公开(公告)号：US06594019B1

公开(公告)日：2003-07-15

申请号：US09677110

申请日：2000-09-29

申请人： Akio Ichikawa ,  Kenji Mogi

发明人： Akio Ichikawa ,  Kenji Mogi

IPC分类号： G01J345

CPC分类号： G01J9/0246

摘要： The DSP#A 5 specifies a read address for reading digital interference signal data stored in the buffer 4 to read the data, and executes the butterfly operation including a preset hamming windowing function coefficient to convert digital interference signal data to frequency data, then outputs the frequency data to the DSP#B 6.

摘要翻译： DSP＃A5指定用于读取存储在缓冲器4中的数字干扰信号数据的读取地址以读取数据，并执行包括预设汉明加窗函数系数的蝶形运算，以将数字干扰信号数据转换为频率数据，然后输出 频率数据到DSP＃B 6。

公开(公告)号：US06714305B2

公开(公告)日：2004-03-30

申请号：US09916920

申请日：2001-07-26

申请人： Charles D. Hoke

发明人： Charles D. Hoke

IPC分类号： G01J345

CPC分类号： B82Y20/00 ,  G02F1/1334 ,  G02F1/216 ,  G02F2202/36 ,  G02F2203/06

摘要： A tunable Fabry-Perot filter, which includes a pair of opposed partially reflective surfaces, a cavity between the partially reflective surfaces, a nano-dispersion of liquid crystals disposed in the cavity, and a control unit for applying an electric field to the liquid crystals.

摘要翻译： 可调式法布里 - 珀罗滤光器，其包括一对相对的部分反射表面，部分反射表面之间的空腔，设置在空腔中的液晶的纳米分散体，以及用于向液晶施加电场的控制单元 。

公开(公告)号：US06667808B2

公开(公告)日：2003-12-23

申请号：US09788855

申请日：2001-02-20

申请人： Todd R. Clermont ,  Francis Jerome Deck ,  Louie Delaware ,  James Ronald Hyatt ,  George Douglas Jones ,  Gabor John Kemeny ,  Steven Ralph Lowry ,  William Joseph McCarthy ,  John R. O'Keefe

发明人： Todd R. Clermont ,  Francis Jerome Deck ,  Louie Delaware ,  James Ronald Hyatt ,  George Douglas Jones ,  Gabor John Kemeny ,  Steven Ralph Lowry ,  William Joseph McCarthy ,  John R. O'Keefe

IPC分类号： G01J345

CPC分类号： G01J3/02 ,  G01J3/0254 ,  G01J3/0272 ,  G01J3/0291 ,  G01J3/08 ,  G01J3/10 ,  G01J3/4535 ,  G01J2001/0481 ,  G01J2003/2866 ,  G01N21/3563 ,  G01N2021/3595

摘要： A multifunctional infrared spectrometer system has an interferometer which receives the infrared beam from a source and provides a modulated output beam on beam paths to multiple spatially separated infrared detectors. A multi-position mirror element mounted at a junction position receives the beam on a main beam path and directs it on branch beam paths to sample positions, with the beam then being directed on the branch beam path to one of the detectors. One of the branch beam paths may include a sample holder at the sample position which can index between a position at which a sample is analyzed, to a reference material position, to a pass-through position for calibration purposes. The multi-position mirror element may also be indexed to direct the beam on a branch path to a fiber optic cable which has a probe at the end of it which may be inserted in a sample fluid or powder to be analyzed, with the reflected light from the probe being directed back on an optical fiber cable to a detector at the spectrometer. The multi-position mirror element may be moved to a position at which the beam is directed on a beam path to and through an integrating sphere to a solid sample, with the reflected light from the sample being directed by the surfaces of the integrating sphere to a detector. A detector may be mounted to detect the light transmitted through the sample to obtain measurements of both reflected and transmitted infrared light at the sample.

摘要翻译： 多功能红外光谱仪系统具有干涉仪，其接收来自源的红外光束，并将光束路径上的调制输出光束提供给多个空间分离的红外探测器。 安装在连接位置处的多位镜子元件在主光束路径上接收光束并将其引导到分支光束路径到采样位置，然后光束被引导到分支光束路径到其中一个检测器。 分支光束路径中的一个可以包括在采样位置处的样品保持器，其可以将样品被分析的位置与参考材料位置之间的位置转换成用于校准目的的通过位置。 多位置反射镜元件还可被索引以将光束引导到光纤电缆的分支路径上，该光纤电缆在其末端具有探针，该探针可以插入待分析的样品流体或粉末中，其中反射光 从探头引导回光纤光缆到光谱仪上的检测器。 多位置反射镜元件可以被移动到光束被引导到通过积分球并通过积分球的光束到固体样品的位置，其中来自样品的反射光被积分球的表面引导到 检测器 可以安装检测器以检测通过样品透射的光，以获得样品上的反射和透射的红外光的测量。

公开(公告)号：US06411388B1

公开(公告)日：2002-06-25

申请号：US09722998

申请日：2000-11-27

申请人： Michael W. Downer ,  Philip T. Wilson

发明人： Michael W. Downer ,  Philip T. Wilson

IPC分类号： G01J345

CPC分类号： G01N21/8422 ,  G01J3/4338 ,  G01J3/453 ,  G01N21/9501

摘要： A method of spectroscopically analyzing amplitude and phase information of a particular sample (510) is disclosed, comprising providing a femtosecond laser source (502) positioned in an angularly distal relationship to the sample, generating from the laser source a primary light pulse (504) of substantial peak intensity and spectral bandwidth directed at the sample, and providing a reference medium (512) interposed between the light source and the sample, fixed in position with respect to the sample. A portion of the primary light pulse is directed through the reference medium generating a reference second harmonic signal (514) directed at the sample, which propagates collinearly with the primary light pulse towards the sample. A spectrometer (520) is provided, positioned in an angularly distal relationship to the sample and opposing the laser source, to receive second harmonic reflections of the primary pulse and reference signal (516 and 514, respectively) from said sample. The second harmonic reflections received are then analyzed.

摘要翻译： 公开了一种光谱分析特定样品（510）的幅度和相位信息的方法，包括提供以与样品成角度远端关系定位的飞秒激光源（502），从激光源产生初级光脉冲（504） 提供针对样品的实质峰强度和光谱带宽，以及提供介于光源和样品之间的参考介质（512），固定在相对于样品的适当位置。 初级光脉冲的一部分被引导通过参考介质，产生指向样本的参考二次谐波信号（514），该参考二次谐波信号与初级光脉冲共线地向样本传播。 提供了一种分光计（520），其以与样品成角度的远端关系定位并与激光源相对，以接收来自所述样品的初级脉冲和参考信号（516和514）的二次谐波反射。 然后分析接收到的二次谐波反射。

公开(公告)号：US06239876B1

公开(公告)日：2001-05-29

申请号：US09495160

申请日：2000-01-31

申请人： Albrecht Brandenberg

发明人： Albrecht Brandenberg

IPC分类号： G01J345

CPC分类号： G01N21/45

摘要： The present invention relates to an optical detector device, in particular for analyzing substances, mixtures of substances or chemical reactions and for determining refractive indices, the device comprising a light source, a measurement path and a reference path and an optoelectronic detection means, with an optical divider being provided downstream of the light source for forming two radiation sources for divergently radiated light beams, of which one is assigned to the measurement path and one to the reference path, and the phase velocity of the light being influenced at least in the measurement path, and the divergent light beams being superimposed in the area of the optoelectronic detection means to form a characteristic intensity distribution.

摘要翻译： 本发明涉及一种光学检测装置，特别是用于分析物质，物质或化学反应的混合物以及用于确定折射率的光学检测器装置，该装置包括光源，测量路径和参考路径以及光电检测装置，具有 光分路器设置在光源的下游，用于形成用于发散光束的两个辐射源，其中一个被分配给测量路径，一个被分配给参考路径，并且至少在测量中影响光的相速度 路径，并且发散光束被叠加在光电检测装置的区域中以形成特征强度分布。