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    Multiple wavelength cavity ring down gas sensor
    1.
    发明授权
    Multiple wavelength cavity ring down gas sensor 有权
    多波长腔环形气体传感器

    公开(公告)号：US08437000B2

    公开(公告)日：2013-05-07

    申请号：US12825985

    申请日：2010-06-29

    申请人： Barrett E. Cole ,  Terry Marta ,  James Allen Cox ,  Fouad Nusseibeh

    发明人： Barrett E. Cole ,  Terry Marta ,  James Allen Cox ,  Fouad Nusseibeh

    IPC分类号： G01N21/00

    CPC分类号： G01N21/031 ,  G01N21/3151 ,  G01N21/3504 ,  G01N21/39

    摘要： An illustrative cavity ring down gas sensor includes an optical cavity for receiving a gas to be detected and at least two electromagnetic radiation sources. The first electromagnetic radiation source may emit a first beam of light having a wavelength corresponding to an absorption wavelength of the gas to be detected, and the second electromagnetic radiation source may emit a second beam of light having a second wavelength that is off of an absorption wavelength of the gas to be detected. The first beam of light may detect a cavity ring down time decay, which is related to the concentration of the gas to be detected. The second beam of light may be used to detect a baseline cavity ring down time decay, which may be used to help increase the accuracy of the sensor by, for example, helping to compensate the concentration of the gas detected by the first beam of light for sensor variations caused by, for example, sensor age, temperature or pressure changes, and/or other conditions.

    摘要翻译： 示例性的空腔环形气体传感器包括用于接收要检测的气体和至少两个电磁辐射源的光学腔。 第一电磁辐射源可以发射具有对应于待检测气体的吸收波长的波长的第一光束，并且第二电磁辐射源可以发射具有不同于吸收的第二波长的第二光束 待检测气体的波长。 第一束光束可以检测到空腔环时间衰减，这与待检测气体的浓度有关。 第二光束可用于检测基线空腔衰减时间衰减，其可以用于通过例如有助于补偿由第一光束检测到的气体的浓度来增加传感器的精度 用于例如由传感器年龄，温度或压力变化引起的传感器变化和/或其他条件。

    MULTIPLE WAVELENGTH CAVITY RING DOWN GAS SENSOR
    2.
    发明申请
    MULTIPLE WAVELENGTH CAVITY RING DOWN GAS SENSOR 有权
    多波长环形环形气体传感器

    公开(公告)号：US20110317164A1

    公开(公告)日：2011-12-29

    申请号：US12825985

    申请日：2010-06-29

    申请人： Barrett E. Cole ,  Terry Marta ,  James Allen Cox ,  Fouad Nusseibeh

    发明人： Barrett E. Cole ,  Terry Marta ,  James Allen Cox ,  Fouad Nusseibeh

    IPC分类号： G01N21/31 ,  G01N21/00

    CPC分类号： G01N21/031 ,  G01N21/3151 ,  G01N21/3504 ,  G01N21/39

    摘要： An illustrative cavity ring down gas sensor includes an optical cavity for receiving a gas to be detected and at least two electromagnetic radiation sources. The first electromagnetic radiation source may emit a first beam of light having a wavelength corresponding to an absorption wavelength of the gas to be detected, and the second electromagnetic radiation source may emit a second beam of light having a second wavelength that is off of an absorption wavelength of the gas to be detected. The first beam of light may detect a cavity ring down time decay, which is related to the concentration of the gas to be detected. The second beam of light may be used to detect a baseline cavity ring down time decay, which may be used to help increase the accuracy of the sensor by, for example, helping to compensate the concentration of the gas detected by the first beam of light for sensor variations caused by, for example, sensor age, temperature or pressure changes, and/or other conditions.

    摘要翻译： 示例性的空腔环形气体传感器包括用于接收要检测的气体和至少两个电磁辐射源的光学腔。 第一电磁辐射源可以发射具有对应于待检测气体的吸收波长的波长的第一光束，并且第二电磁辐射源可以发射具有不同于吸收的第二波长的第二光束 待检测气体的波长。 第一束光束可以检测到空腔环时间衰减，这与待检测气体的浓度有关。 第二光束可用于检测基线空腔衰减时间衰减，其可以用于通过例如有助于补偿由第一光束检测到的气体的浓度来增加传感器的精度 用于例如由传感器年龄，温度或压力变化引起的传感器变化和/或其他条件。

    Beam intensity detection in a cavity ring down sensor
    5.
    发明授权
    Beam intensity detection in a cavity ring down sensor 有权
    光束强度检测在空腔环下传感器

    公开(公告)号：US08269972B2

    公开(公告)日：2012-09-18

    申请号：US12826095

    申请日：2010-06-29

    申请人： Barrett E. Cole ,  Terry Marta

    发明人： Barrett E. Cole ,  Terry Marta

    IPC分类号： G01N21/00

    CPC分类号： G01N21/3504 ,  G01N21/39 ,  G01N2021/391

    摘要： A cavity ring down gas sensor may include a radiation source emits an input beam of light having a wavelength corresponding to an absorption line of a gas to be detected. The input beam of light is coupled into an optical cavity to amplify an internal beam of light that is reflected about the optical cavity. An optical element is disposed in the optical cavity at an angle close to, but not at, the Brewster's angle to reflect a relatively small portion of the internal beam of light to a detector. When a specified light intensity is reached in the optical cavity, the input beam of light may be prevented from entering the optical cavity, and a cavity ring down time decay may be measured. The cavity ring down time decay may be related to the gas concentration of a gas to be detected in the optical cavity.

    摘要翻译： 空腔环形气体传感器可以包括辐射源发射具有对应于待检测气体的吸收线的波长的输入光束。 输入光束被耦合到光腔中以放大围绕光腔反射的内部光束。 光学元件以接近但不是布鲁斯特角的角度设置在光学腔中，以将内部光束的相对小的一部分反射到检测器。 当在光腔中达到指定的光强时，可以防止输入光束进入光腔，并且可以测量空腔衰减时间衰减。 空腔衰减时间衰减可能与在光腔中要检测的气体的气体浓度有关。

    BEAM INTENSITY DETECTION IN A CAVITY RING DOWN SENSOR
    6.
    发明申请
    BEAM INTENSITY DETECTION IN A CAVITY RING DOWN SENSOR 有权
    光束下降传感器中的光束强度检测

    公开(公告)号：US20110317165A1

    公开(公告)日：2011-12-29

    申请号：US12826095

    申请日：2010-06-29

    申请人： Barrett E. Cole ,  Terry Marta

    发明人： Barrett E. Cole ,  Terry Marta

    IPC分类号： G01N21/59

    CPC分类号： G01N21/3504 ,  G01N21/39 ,  G01N2021/391

    摘要： A cavity ring down gas sensor is disclosed. In one illustrative embodiment, the cavity ring down gas sensor includes an electromagnetic radiation source (e.g. laser) configured to emit an input beam of light having a wavelength corresponding to an absorption line of a gas to be detected. The input beam of light may be coupled into an optical cavity to amplify an internal beam of light that is reflected about the optical cavity. An optical element may be disposed in the optical cavity at an angled close to, but not at, the Brewster's angle to reflect a relatively small portion of the internal beam of light in the optical cavity to a detector for determining the intensity of the internal beam of light in the optical cavity. When a specified light intensity is reached in the optical cavity, the input beam of light may be shut off or otherwise prevented from entering the optical cavity, and a cavity ring down time decay may be measured. The cavity ring down time decay may be related to the gas concentration of a gas to be detected in the optical cavity.

    摘要翻译： 公开了一种空腔环形气体传感器。 在一个说明性实施例中，空腔环形气体传感器包括电磁辐射源（例如激光器），其被配置为发射具有对应于待检测气体的吸收线的波长的输入光束。 输入光束可以耦合到光学腔中以放大围绕光腔反射的内部光束。 光学元件可以以接近但不是布鲁斯特角度的角度设置在光学腔中，以将光腔中的内部光束的相对小的一部分反射到用于确定内部光束的强度的检测器 的光腔中的光。 当在光腔中达到指定的光强时，输入光束可以被切断或以其它方式阻止进入光腔，并且可以测量空腔衰减时间衰减。 空腔衰减时间衰减可能与在光腔中要检测的气体的气体浓度有关。