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    Spectrometer with validation cell
    1.
    发明授权
    Spectrometer with validation cell 有权
    光谱仪带有验证单元

    公开(公告)号：US08358417B2

    公开(公告)日：2013-01-22

    申请号：US13026921

    申请日：2011-02-14

    申请人： Alfred Feitisch ,  Lutz Keller ,  Xiang Liu ,  Mathias Schrempel ,  Keith Benjamin Helbley

    发明人： Alfred Feitisch ,  Lutz Keller ,  Xiang Liu ,  Mathias Schrempel ,  Keith Benjamin Helbley

    IPC分类号： G01J3/28 ,  G01N21/00

    CPC分类号： G01J3/28 ,  G01J3/42 ,  G01N21/031 ,  G01N21/274 ,  G01N21/31 ,  G01N21/3504 ,  G01N21/3518 ,  G01N21/39 ,  G01N2021/399

    摘要： A valid state of an analytical system that includes a light source and a detector can be verified by determining that deviation of first light intensity data quantifying a first intensity of light received at the detector from the light source after the light has passed at least once through each of a reference gas in a validation cell and a zero gas from a stored data set does not exceed a pre-defined threshold deviation. The stored data set can represent at least one previous measurement collected during a previous instrument validation process performed on the analytical system. The reference gas can include a known amount of an analyte. A concentration of the analyte in a sample gas can be determined by correcting second light intensity data quantifying a second intensity of the light received at the detector after the light passes at least once through each of the reference gas in the validation cell and a sample gas containing an unknown concentration of the analyte compound. Related systems, methods, and articles of manufacture are also described.

    摘要翻译： 包括光源和检测器的分析系统的有效状态可以通过确定在光已经通过至少一次通过之后量化在检测器处接收的第一光强度的光的第一光强度数据与来自光源的偏差 验证单元中的参考气体和来自存储的数据组的零气体中的每一个不超过预定义的阈值偏差。 存储的数据集可以表示在分析系统上执行的先前的仪器验证过程期间收集的至少一个以前的测量。 参考气体可以包括已知量的分析物。 样品气体中分析物的浓度可以通过校正第二光强度数据来确定，该第二光强度数据在光通过至少一次通过验证单元中的每个参考气体之后，量化在检测器处接收的光的第二强度，并且样品气体 含有未知浓度的分析物。 还描述了相关系统，方法和制品。

    Analytical equipment enclosure incorporating phase changing materials
    2.
    发明授权
    Analytical equipment enclosure incorporating phase changing materials 有权
    分析设备包含相变材料

    公开(公告)号：US08154728B2

    公开(公告)日：2012-04-10

    申请号：US12347368

    申请日：2008-12-31

    申请人： Xuejiao Hu ,  Alfred Feitisch

    发明人： Xuejiao Hu ,  Alfred Feitisch

    IPC分类号： G01N21/00 ,  H01S3/04

    CPC分类号： G01N21/39 ,  G01N2201/022 ,  G01N2201/023 ,  G01N2201/0231

    摘要： Thermally controlled enclosures that can be used with gas analyzers are described. The enclosures incorporate one or more phase changing materials that buffer ambient and internal heat loads to reduce the power consumption demand of mechanical or electronic heating apparatus. Maintenance of gas analyzer equipment at a consistent temperature can be important to achieving stable and reproducible results. Related systems, apparatus, methods, and/or articles are also described.

    摘要翻译： 描述了可用于气体分析仪的热控制外壳。 外壳采用缓冲环境和内部热负荷的一种或多种相变材料，以减少机械或电子加热设备的功耗需求。 在一致的温度下维护气体分析仪设备对于获得稳定和可重现的结果是重要的。 还描述了相关系统，装置，方法和/或制品。

    Reactive gas detection in complex backgrounds
    3.
    发明授权
    Reactive gas detection in complex backgrounds 有权
    复杂背景下的反应性气体检测

    公开(公告)号：US08152900B2

    公开(公告)日：2012-04-10

    申请号：US12911666

    申请日：2010-10-25

    申请人： Xin Zhou ,  Xiang Liu ,  Alfred Feitisch ,  Gregory M. Sanger

    发明人： Xin Zhou ,  Xiang Liu ,  Alfred Feitisch ,  Gregory M. Sanger

    IPC分类号： B01D59/26

    CPC分类号： G01N21/3504 ,  G01N2021/3545 ,  G01N2021/399 ,  G01N2201/1215

    摘要： A differential absorption spectrum for a reactive gas in a gas mixture can be generated for sample absorption data by subtracting background absorption data set from the sample absorption data. The background absorption data can be characteristic of absorption characteristics of the background composition in a laser light scan range that includes a target wavelength. The differential absorption spectrum can be converted to a measured concentration of the reactive gas using calibration data. A determination can be made whether the background composition has substantially changed relative to the background absorption data, and new background absorption data can be used if the background composition has substantially changed. Related systems, apparatus, methods, and/or articles are also described.

    摘要翻译： 可以通过从样品吸收数据中减去设置的背景吸收数据，为样品吸收数据产生气体混合物中的反应气体的差分吸收光谱。 背景吸收数据可以是包括目标波长的激光扫描范围中背景组合物的吸收特性的特征。 使用校准数据可以将差示吸收光谱转换为测量的反应气体浓度。 可以确定背景组合物是否相对于背景吸收数据基本上改变，并且如果背景组合物已经基本上改变，则可以使用新的背景吸收数据。 还描述了相关系统，装置，方法和/或制品。

    Pressure-invariant trace gas detection
    5.
    发明申请
    Pressure-invariant trace gas detection 有权
    压力不变痕量气体检测

    公开(公告)号：US20080225296A1

    公开(公告)日：2008-09-18

    申请号：US11724665

    申请日：2007-03-14

    申请人： Xiang Liu ,  Xin Zhou ,  Alfred Feitisch ,  Greg Sanger

    发明人： Xiang Liu ,  Xin Zhou ,  Alfred Feitisch ,  Greg Sanger

    IPC分类号： G01N21/00

    CPC分类号： G01N21/39 ,  G01J3/433 ,  G01N21/3504 ,  G01N2021/3513 ,  G01N2021/354 ,  G01N2021/399 ,  G01N2201/1218

    摘要： A system includes a light source, a detector, at least one pressure sensor, and a control unit. The light source emits light at a wavelength substantially corresponding to an absorption line of a target gas. The detector is positioned to detect the intensity of light emitted from the light source that has passed through the target gas. The pressure sensor detects the pressure of the target gas. The control circuit is coupled to the detector and the light source to adjust the modulation amplitude of the light source based on the pressure detected by the at least one pressure sensor. Related systems, apparatus, methods, and/or articles are also described.

    摘要翻译： 系统包括光源，检测器，至少一个压力传感器和控制单元。 光源以基本对应于目标气体的吸收线的波长发射光。 检测器被定位成检测从已经通过目标气体的光源发射的光的强度。 压力传感器检测目标气体的压力。 控制电路耦合到检测器和光源，以基于由至少一个压力传感器检测到的压力来调节光源的调制幅度。 还描述了相关系统，装置，方法和/或制品。

    Single resonator for simultaneous multiple single-frequency wavelengths
    6.
    发明授权
    Single resonator for simultaneous multiple single-frequency wavelengths 失效
    单谐振器用于同时多个单频波长

    公开(公告)号：US06314116B1

    公开(公告)日：2001-11-06

    申请号：US09111457

    申请日：1998-07-07

    申请人： David L. Wright ,  Kurt G. Klavuhn ,  Alfred Feitisch ,  Marc K. von Gunten

    发明人： David L. Wright ,  Kurt G. Klavuhn ,  Alfred Feitisch ,  Marc K. von Gunten

    IPC分类号： H01S310

    CPC分类号： H01S3/08 ,  H01S3/08086 ,  H01S3/0809 ,  H01S3/106 ,  H01S3/14 ,  H01S3/16 ,  H01S3/20 ,  H01S3/22

    摘要： Disclosed is a laser system including a high reflector and an output coupler defining a resonator; a gain medium positioned in the resonator that produces optical gain at more than two desired wavelengths; a coarse selection system, positioned in the resonator and coupled to the gain medium, that produces single transverse modes at the desired wavelengths, with transmission values at the desired wavelengths selected such that power output at the desired wavelengths is maximized, and with transmission values at undesired wavelengths selected to retard lasing at the undesired wavelengths; and a fine selector positioned in the resonator and coupled to the gain medium, having a optical length such that all of the desired wavelengths are substantially simultaneously resonant within the optical length; whereby an output beam is generated. Also disclosed are full-color holography systems and three-dimension laser Doppler velocimetry systems incorporating the inventive laser system.

    摘要翻译： 公开了一种激光系统，包括高反射器和限定谐振器的输出耦合器; 位于所述谐振器中的增益介质，其以超过两个所需波长产生光学增益; 位于谐振器中并耦合到增益介质的粗选择系统，其在期望波长处产生单个横模，其中选择所需波长的传输值使得期望波长处的功率输出最大化，并且传输值在 选择不期望的波长以在不期望的波长处延迟激光; 以及精细选择器，其位于所述谐振器中并且耦合到所述增益介质，所述精细选择器具有光学长度，使得所有所需波长在所述光学长度内基本上同时谐振; 从而产生输出光束。 还公开了包含本发明的激光系统的全色全息照相系统和三维激光多普勒测速系统。

    Dynamic reconstruction of a calibration state of an absorption spectrometer
    8.
    发明授权
    Dynamic reconstruction of a calibration state of an absorption spectrometer 有权
    吸收光谱仪的校准状态的动态重建

    公开(公告)号：US08711357B2

    公开(公告)日：2014-04-29

    申请号：US13235105

    申请日：2011-09-16

    申请人： Xiang Liu ,  John Lewison ,  Wenhai Ji ,  Alfred Feitisch

    发明人： Xiang Liu ,  John Lewison ,  Wenhai Ji ,  Alfred Feitisch

    IPC分类号： G01N21/00

    CPC分类号： G01J3/28 ,  G01J3/42 ,  G01N21/031 ,  G01N21/274 ,  G01N21/31 ,  G01N21/3504 ,  G01N21/3518 ,  G01N21/39 ,  G01N2021/399

    摘要： A reference harmonic absorption curve of a laser absorption spectrometer, which can include a tunable or scannable laser light source and a detector, can have a reference curve shape and can include a first, second, or higher order harmonic signal of a reference signal generated by the detector in response to light passing from the laser light source through a reference gas or gas mixture. The reference gas or gas mixture can include one or more of a target analyte and a background gas expected to be present during analysis of the target analyte. The reference harmonic absorption curve can have been determined for the laser absorption spectrometer in a known or calibrated state. A test harmonic absorption curve having a test curve shape is compared with the reference harmonic absorption curve to detect a difference between the test curve shape and the reference curve shape. Operating and/or analytical parameters of the laser absorption spectrometer are adjusted to correct the test curve shape to reduce the difference between the test curve shape and the reference curve shape.

    摘要翻译： 可以包括可调谐或可扫描的激光光源和检测器的激光吸收光谱仪的参考谐波吸收曲线可以具有参考曲线形状，并且可以包括由第一，第二或更高次谐波信号产生的参考信号 检测器响应于从激光源通过参考气体或气体混合物的光。 参考气体或气体混合物可以包括目标分析物和预期在目标分析物的分析期间存在的背景气体中的一种或多种。 参考谐波吸收曲线可以在已知或校准状态下为激光吸收光谱仪确定。 将具有测试曲线形状的测试谐波吸收曲线与参考谐波吸收曲线进行比较，以检测测试曲线形状和参考曲线形状之间的差异。 调整激光吸收光谱仪的操作和/或分析参数以校正测试曲线形状，以减小测试曲线形状与参考曲线形状之间的差异。

    COLLISIONAL BROADENING COMPENSATION USING REAL OR NEAR-REAL TIME VALIDATION IN SPECTROSCOPIC ANALYZERS
    9.
    发明申请
    COLLISIONAL BROADENING COMPENSATION USING REAL OR NEAR-REAL TIME VALIDATION IN SPECTROSCOPIC ANALYZERS 有权
    在光谱分析仪中使用实时或近似实时时间验证的冲突广播补偿

    公开(公告)号：US20130250301A1

    公开(公告)日：2013-09-26

    申请号：US13428591

    申请日：2012-03-23

    申请人： Alfred Feitisch ,  Xiang Liu ,  Hsu-Hung Huang ,  Wenhai Ji ,  Richard Cline

    发明人： Alfred Feitisch ,  Xiang Liu ,  Hsu-Hung Huang ,  Wenhai Ji ,  Richard Cline

    IPC分类号： G06F19/00 ,  G01J3/42

    CPC分类号： G01J3/0297 ,  G01J3/42 ,  G01N21/05 ,  G01N21/274 ,  G01N21/3504 ,  G01N21/39 ,  G01N2021/0314 ,  G01N2021/399 ,  G01N2201/1211 ,  G01N2201/1218 ,  G01N2201/127

    摘要： Validation verification data quantifying an intensity of light reaching a detector of a spectrometer from a light source of the spectrometer after the light passes through a validation gas across a known path length can be collected or received. The validation gas can include an amount of an analyte compound and an undisturbed background composition that is representative of a sample gas background composition of a sample gas to be analyzed using a spectrometer. The sample gas background composition can include one or more background components. The validation verification data can be compared with stored calibration data for the spectrometer to calculate a concentration adjustment factor, and sample measurement data collected with the spectrometer can be modified using this adjustment factor to compensate for collisional broadening of a spectral peak of the analyte compound by the background components. Related methods, articles of manufacture, systems, and the like are described.

    摘要翻译： 验证验证数据可以收集或接收在光通过已知路径长度的验证气体之后，量化从光谱仪的光源到达光谱仪的检测器的光强度。 验证气体可以包括一定量的分析物化合物和未受干扰的背景组合物，其代表使用光谱仪分析的样品气体的样品气体背景组成。 样品气体背景组合物可以包括一种或多种背景组分。 可以将验证验证数据与存储的光谱仪校准数据进行比较，以计算浓度调节因子，并且可以使用该调整因子修改用光谱仪收集的样品测量数据，以补偿分析物化合物的光谱峰的碰撞展宽 背景组件。 描述了相关方法，制品，系统等。