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1.发明申请公开(公告)号：US20150253261A1
公开(公告)日：2015-09-10
申请号：US14718624
申请日：2015-05-21
申请人： Brooks Hart Pate , Kevin K. Lehmann
发明人： Brooks Hart Pate , Kevin K. Lehmann
IPC分类号： G01N22/00
CPC分类号： G01N21/3586 , G01J3/10 , G01J3/4338 , G01J3/44 , G01N21/31 , G01N21/62 , G01N21/67 , G01N21/69 , G01N22/00 , H01S3/0057
摘要： A pulse train comprising chirped pulses can be used to excite a sample, such as for spectroscopic analysis. The respective chirped pulses can include a frequency sweep to establish a first frequency-domain comb. A width of frequency-domain comb peaks can be established at least in part by a total duration of the pulse train, and a bandwidth of the first frequency-domain comb can be determined at least in part by a bandwidth of the frequency sweep of the respective chirped pulses. A free-space or enclosed sample interaction region can be used.
摘要翻译： 包括啁啾脉冲的脉冲串可用于激发样品，例如用于光谱分析。 相应的啁啾脉冲可以包括频率扫描以建立第一频域梳。 频域梳状峰值的宽度可以至少部分地由脉冲序列的总持续时间建立，并且第一频域梳状的带宽可以至少部分地由第一频域梳状物的频率扫描的带宽确定 各自的啁啾脉冲。 可以使用自由空间或封闭的样品相互作用区域。
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2.发明授权Method for enhanced evanescent field exposure in an optical fiber resonator for spectroscopic detection and measurement of trace species 有权用于光谱检测和痕量物质测量的光纤谐振器中增强的消逝场曝光的方法公开(公告)号：US07504263B2
公开(公告)日：2009-03-17
申请号：US11389852
申请日：2006-03-27
IPC分类号： G01N
CPC分类号： G01N21/39 , G01J3/42 , G01N21/552 , G01N2021/391 , G01N2021/7789
摘要： A method for detection and measurement of trace species in a gas or liquid sample is provided. The method comprises forming a sensor from an optical fiber by tapering a portion the optical fiber along a length thereof, exposing the tapered portion of the optic fiber to the sample gas or sample liquid, emitting radiation from a coherent source, coupling at least a portion of the radiation emitted from the coherent source into the fiber optic ring, receiving a portion of the radiation traveling in the fiber optic ring, and determining the level of trace species in the gas or liquid sample based on a rate of decay of the radiation within the fiber optic ring.
摘要翻译： 提供了一种用于检测和测量气体或液体样品中痕量物质的方法。 该方法包括通过使光纤的一部分沿其长度逐渐变细来形成传感器，将光纤的锥形部分暴露于样品气体或样品液体，从相干光源发射辐射，将至少一部分 从相干光源发射到光纤环中的辐射，接收在光纤环中行进的辐射的一部分，以及基于辐射内部的辐射衰减速率来确定气体或液体样品中的痕量物质的水平 光纤环。
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3.发明授权High-finesse optical resonator for cavity ring-down spectroscopy based upon Brewster's angle prism retroreflectors 失效基于布鲁斯特角棱镜后向反射器的高精度光学谐振腔，用于腔体衰减光谱
公开(公告)号：US5973864A
公开(公告)日：1999-10-26
申请号：US955126
申请日：1997-10-21
申请人： Kevin K. Lehmann , Paul Rabinowitz
发明人： Kevin K. Lehmann , Paul Rabinowitz
IPC分类号： G01N21/03 , G01J3/42 , G01N21/39 , G01N21/61 , G02B5/04 , G02B5/12 , G02B7/18 , G01J3/00 , G01N21/00 , H01S3/08
摘要： A stable resonator for a ring-down cavity spectroscopy cell having an optic axis. The resonator includes two Brewster's angle retroreflector prisms, each having a plurality of total internal reflection surfaces. The prisms are disposed in alignment along the optic axis of the resonator. One or both of the prisms can be rotated so that light rays enter and leave a surface of the prism nearly at Brewster's angle to the normal of the prism surface. This feature maintains alignment between the prisms and allows the resonator to be tuned. One of the total internal reflection surfaces of at least one of the prisms may be a curved surface (either a ground curved surface or a surface curved by the addition, through optically contacting or gluing, of a plano-convex lens to the surface). Alternatively, an astigmatic lens may be centered in one arm of the resonator and tilted at Brewster's angle with respect to the optic axis of the resonator. In a preferred embodiment, each of the prisms has an apex angle of about 135.degree. minus Brewster's angle, a second angle of about 90.degree., and a third angle of about 180.degree. minus two times Brewster's angle.
摘要翻译： 用于具有光轴的环形腔光谱单元的稳定谐振器。 谐振器包括两个布鲁斯特角回射棱镜，每个具有多个全内反射面。 棱镜沿着谐振器的光轴对准设置。 棱镜中的一个或两个可以旋转，使得光线几乎以布鲁斯特角相对于棱镜表面的法线进入和离开棱镜的表面。 该特征保持棱镜之间的对准并且允许调谐谐振器。 至少一个棱镜的全部内部反射表面中的一个可以是弯曲表面（地面曲面或通过平凸凸透镜通过光学接触或胶合到表面的曲线而弯曲的表面）。 或者，散光透镜可以在谐振器的一个臂中居中并相对于谐振器的光轴以布鲁斯特角倾斜。 在一个优选实施例中，每个棱镜具有大约135度的顶角减去布鲁斯特角，约90度的第二角度和约180度的第三角度减去布鲁斯特角的两倍。
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公开(公告)号：US09151708B2
公开(公告)日：2015-10-06
申请号：US14006818
申请日：2012-03-23
申请人： Kevin K. Lehmann
发明人： Kevin K. Lehmann
CPC分类号： G01N21/0303 , G01J3/42 , G01N2021/0364 , G01N2021/391
摘要： An adjustable optical cell assembly includes a hollow body defining a cavity and a plurality of optical elements rigidly affixed within the cavity. A first actuator is configured to apply a force to an external surface of the hollow body sufficient to elastically deform at least a portion of the hollow body such one of a distance and a relative orientation between first and second optical elements of the plurality of optical elements is responsively altered.
摘要翻译： 可调光学单元组件包括限定空腔的空心体和刚性地固定在空腔内的多个光学元件。 第一致动器被配置为向中空体的外表面施加足以使中空体的至少一部分弹性变形的多个光学元件的第一和第二光学元件之间的距离和相对取向之一 经过改变
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5.发明申请公开(公告)号：US20130154611A1
公开(公告)日：2013-06-20
申请号：US13704483
申请日：2011-06-17
申请人： Brooks Hart Pate , Kevin K. Lehmann
发明人： Brooks Hart Pate , Kevin K. Lehmann
IPC分类号： G01N22/00
CPC分类号： G01N21/3586 , G01J3/10 , G01J3/4338 , G01J3/44 , G01N21/31 , G01N21/62 , G01N21/67 , G01N21/69 , G01N22/00 , H01S3/0057
摘要： A pulse train comprising chirped pulses of electromagnetic energy can be used to excite a sample, such as for spectroscopic analysis. The respective chirped pulses can include a frequency sweep across a first specified bandwidth during a respective chirped pulse duration, the respective chirped pulse duration establishing a first frequency-domain comb peak separation. A width of a frequency-domain comb peak can be established at least in part by a total duration of the pulse train, and a bandwidth of the first frequency-domain comb can be determined at least in part by the first specified bandwidth of the frequency sweep of the respective chirped pulses.
摘要翻译： 可以使用包括电磁能的啁啾脉冲的脉冲串来激发样品，例如用于光谱分析。 相应的啁啾脉冲可以包括在相应的啁啾脉冲持续时间期间穿过第一指定带宽的频率扫描，相应的啁啾脉冲持续时间建立第一频域梳状峰值间隔。 可以至少部分地由脉冲序列的总持续时间来建立频域梳状峰值的宽度，并且可以至少部分地通过频率的第一指定带宽来确定第一频域梳状的带宽 扫描各个啁啾脉冲。
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公开(公告)号：US07046362B2
公开(公告)日：2006-05-16
申请号：US10017367
申请日：2001-12-12
IPC分类号： G01N21/00
CPC分类号： G01J3/42 , G01N21/39 , G01N21/552 , G01N2021/391 , G01N2021/7789
摘要： An apparatus for detection and measurement of trace species in a gas or liquid sample. A ring down cell formed from a fiber optic ring is exposed to the sample gas or liquid. A coherent source emits radiation into the fiber optic ring, which in turn is received at an output thereof. The fiber optic ring has a portion thereof, between the input and output, exposed to the sample gas or sample liquid. A processor is coupled to the receiver and determines the level of trace species in the gas or liquid sample based on the rate of decay of the radiation within the fiber optic ring.
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公开(公告)号：US20140110599A1
公开(公告)日：2014-04-24
申请号：US14006818
申请日：2012-03-23
申请人： Kevin K. Lehmann
发明人： Kevin K. Lehmann
IPC分类号： G01N21/03
CPC分类号： G01N21/0303 , G01J3/42 , G01N2021/0364 , G01N2021/391
摘要： An adjustable optical cell assembly includes a hollow body defining a cavity and a plurality of optical elements rigidly affixed within the cavity. A first actuator is configured to apply a force to an external surface of the hollow body sufficient to elastically deform at least a portion of the hollow body such one of a distance and a relative orientation between first and second optical elements of the plurality of optical elements is responsively altered.
摘要翻译： 可调光学单元组件包括限定空腔的空心体和刚性地固定在空腔内的多个光学元件。 第一致动器被配置为向中空体的外表面施加足以使中空体的至少一部分弹性变形的多个光学元件的第一和第二光学元件之间的距离和相对取向之一 经过改变
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8.发明授权Method and apparatus for enhanced evanescent field exposure in an optical fiber resonator for spectroscopic detection and measurement of trace species 有权用于光谱检测和测量痕量物质的光纤谐振器中增强的消逝场曝光的方法和装置公开(公告)号：US07318909B2
公开(公告)日：2008-01-15
申请号：US10157400
申请日：2002-05-29
IPC分类号： G02N30/00
CPC分类号： G01N21/39 , G01J3/42 , G01N21/552 , G01N2021/391 , G01N2021/7789
摘要： An apparatus for detection and measurement of trace species in a gas or liquid sample. A sensor of a ring down cell formed from an optical fiber is exposed to the sample gas or liquid. A coherent source emits radiation into the optical fiber loop, which in turn is received at an output coupler. The fiber optic ring is coupled to a sensor which has a portion thereof, between the input and output, exposed to the sample gas or sample liquid. The sensor has an enhanced evanescent region. A processor is coupled to the receiver and determines the level of trace species in the gas or liquid sample based on the rate of decay of the radiation within the fiber optic ring.
摘要翻译： 用于检测和测量气体或液体样品中微量物质的装置。 由光纤形成的环形电池的传感器暴露于样品气体或液体。 相干光源将辐射发射到光纤回路中，光纤回路又在输出耦合器处接收。 光纤环耦合到传感器，该传感器具有在输入和输出之间暴露于样品气体或样品液体中的一部分。 传感器具有增强的渐逝区域。 处理器耦合到接收器，并且基于光纤环内的辐射的衰减速率来确定气体或液体样品中痕量物质的水平。
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公开(公告)号：US09046462B2
公开(公告)日：2015-06-02
申请号：US13704483
申请日：2011-06-17
申请人： Brooks Hart Pate , Kevin K. Lehmann
发明人： Brooks Hart Pate , Kevin K. Lehmann
IPC分类号： G01J3/30 , G01N22/00 , G01N21/3586 , H01S3/00
CPC分类号： G01N21/3586 , G01J3/10 , G01J3/4338 , G01J3/44 , G01N21/31 , G01N21/62 , G01N21/67 , G01N21/69 , G01N22/00 , H01S3/0057
摘要： A pulse train comprising chirped pulses of electromagnetic energy can be used to excite a sample, such as for spectroscopic analysis. The respective chirped pulses can include a frequency sweep across a first specified bandwidth during a respective chirped pulse duration, the respective chirped pulse duration establishing a first frequency-domain comb peak separation. A width of a frequency-domain comb peak can be established at least in part by a total duration of the pulse train, and a bandwidth of the first frequency-domain comb can be determined at least in part by the first specified bandwidth of the frequency sweep of the respective chirped pulses.
摘要翻译： 可以使用包括电磁能的啁啾脉冲的脉冲串来激发样品，例如用于光谱分析。 相应的啁啾脉冲可以包括在相应的啁啾脉冲持续时间期间穿过第一指定带宽的频率扫描，相应的啁啾脉冲持续时间建立第一频域梳状峰值间隔。 可以至少部分地由脉冲序列的总持续时间来建立频域梳状峰值的宽度，并且可以至少部分地通过频率的第一指定带宽来确定第一频域梳状的带宽 扫描各个啁啾脉冲。
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10.发明授权Low loss prism retroreflectors for relative index of refraction less than the square root of 2 失效低损耗棱镜后向反射器，相对折射率小于平方根2公开(公告)号：US06172824B2
公开(公告)日：2001-01-09
申请号：US09494161
申请日：2000-01-24
申请人： Kevin K. Lehmann , Paul Rabinowitz
发明人： Kevin K. Lehmann , Paul Rabinowitz
IPC分类号： G02B504
摘要： A stable resonator for a ring-down cavity spectroscopy cell having an optic axis. The resonator includes two Brewster's angle retroreflector prisms, at least one prism having greater than two total internal reflection surfaces. The prisms are disposed in alignment along the optic axis of the resonator. One or both of the prisms can be rotated so that light rays enter and leave a surface of the prism nearly at Brewster's angle to the normal of the prism surface. This feature maintains alignment between the prisms and allows the resonator to be tuned. One of the total internal reflection surfaces of at least one of the prisms may be a curved surface (either a ground curved surface or a surface curved by the addition, through optically contacting or gluing, of a plano-convex lens to the surface). In a preferred embodiment, at least one of the prisms has an apex angle of about 180° minus two times Brewster's angle, a second angle of about 90° plus the angle of incidence minus Brewster's angle, and a third angle of about three times Brewster's angle plus the angle of incidence for internal reflection minus 90°.
摘要翻译： 用于具有光轴的环形腔光谱单元的稳定谐振器。 谐振器包括两个布鲁斯特角回射棱镜，至少一个具有大于两个全内反射面的棱镜。 棱镜沿着谐振器的光轴对准设置。 棱镜中的一个或两个可以旋转，使得光线几乎以布鲁斯特角相对于棱镜表面的法线进入和离开棱镜的表面。 该特征保持棱镜之间的对准并且允许调谐谐振器。 至少一个棱镜的全部内部反射表面中的一个可以是弯曲表面（地面曲面或通过平凸凸透镜通过光学接触或胶合到表面的曲线而弯曲的表面）。 在优选实施例中，至少一个棱镜具有大约180°的顶角减去布鲁斯特角的两倍，约90°的第二角度加上入射角减去布鲁斯特角，第三角度约为布鲁斯特 角加上内反射角为90°。
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