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公开(公告)号：US20050168826A1
公开(公告)日：2005-08-04
申请号：US10910756
申请日：2004-08-03
申请人： Serguei Koulikov , Giacomo Vacca , Alexander Kachanov , Bruce Richman , Boris Kharlamov , Guido Knippels , Christopher Rella , Hoa Pham
发明人： Serguei Koulikov , Giacomo Vacca , Alexander Kachanov , Bruce Richman , Boris Kharlamov , Guido Knippels , Christopher Rella , Hoa Pham
CPC分类号： G02B6/4206 , G02B6/32 , G02B6/4208 , G02B6/4226 , H01S5/005 , H01S5/0064 , H01S5/02248 , H01S5/02284 , H01S5/141 , H01S5/4006
摘要： A method and apparatus for adjusting the path of an optical beam and in particular, a method and apparatus for improving the coupling efficiency (power input) of free-space radiation into an optical waveguide using, as part of an optical train, a weak lens positioned along the path of the optical beam (the Z axis) and adapted to adjust the path of the beam. The weak lens is translatable along the Z axis and also along at least one axis perpendicular to the Z axis (the X or Y axes). In a preferred embodiment, the weak lens possesses all three positional degrees of freedom (i.e., it is adjustable along all of the X, Y, and Z axes). In certain preferred embodiments, the weak lens is also capable of one or even two orientational degrees of freedom (i.e., pitch and/or yaw).
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公开(公告)号：US20050168825A1
公开(公告)日：2005-08-04
申请号：US10770141
申请日：2004-02-02
申请人： Serguei Koulikov , Giacomo Vacca , Alexander Kachanov , Bruce Richman , Boris Kharlamov , Guido Knippels , Christopher Rella , Hoa Pham
发明人： Serguei Koulikov , Giacomo Vacca , Alexander Kachanov , Bruce Richman , Boris Kharlamov , Guido Knippels , Christopher Rella , Hoa Pham
CPC分类号： G02B6/4206 , G02B6/32
摘要： A method and apparatus for adjusting the path of an optical beam and in particular, a method and apparatus for improving the coupling efficiency (power input) of free-space radiation into an optical waveguide using, as part of an optical train, a weak lens positioned along the path of the optical beam (the Z axis) and adapted to adjust the path of the beam. The weak lens is translatable along the Z axis and also along at least one axis perpendicular to the Z axis (the X or Y axes). In a preferred embodiment, the weak lens possesses all three positional degrees of freedom (i.e., it is adjustable along all of the X, Y, and Z axes). In certain preferred embodiments, the weak lens is also capable of one or even two orientational degrees of freedom (i.e., pitch and/or yaw).
摘要翻译： 一种用于调整光束路径的方法和装置，特别地，一种用于提高自由空间辐射到光波导中的耦合效率（功率输入）的方法和装置，其使用作为光学系列的一部分的弱透镜 沿着光束的路径（Z轴）定位并且适于调整光束的路径。 弱透镜可沿Z轴平移，也可沿垂直于Z轴（X或Y轴）的至少一个轴平移。 在优选实施例中，弱透镜具有全部三个位置自由度（即，沿着X，Y和Z轴全部可调节）。 在某些优选实施例中，弱透镜还能够具有一个或甚至两个取向自由度（即俯仰和/或偏转）。
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公开(公告)号：US08539816B2
公开(公告)日：2013-09-24
申请号：US13105795
申请日：2011-05-11
IPC分类号： G01N21/00
CPC分类号： G01N21/1702 , G01N21/39 , G01N2021/1704
摘要： A system for locking a laser with a resonant optical cavity includes a laser that emits a laser beam, a resonant optical cavity having at least two cavity mirrors, one of which is a cavity coupling mirror, mode matching optics configured to couple the laser beam to the cavity via the cavity coupling mirror, means for applying a periodic dither or modulation waveform signal to the optical frequency of the incident laser beam or to the laser itself to thereby induce modulation of the intracavity optical power, and means for enabling a portion of the light emerging from the cavity coupling mirror to enter a cavity of the laser while maintaining an optical phase that results in periodic optical feedback locking whereby a mean optical frequency of the laser matches a resonance peak of the cavity.
摘要翻译： 用于利用谐振光学腔锁定激光器的系统包括发射激光束的激光器，具有至少两个腔镜的谐振光腔，其中一个是空腔耦合镜，配置为将激光束耦合到 通过腔耦合镜的空腔，用于将周期性抖动或调制波形信号施加到入射激光束的光频或激光器本身的装置，从而引起腔内光功率的调制，以及用于使 从空腔耦合镜出现的光进入激光器的腔，同时保持导致周期性光学反馈锁定的光学相位，由此激光的平均光学频率与空腔的共振峰匹配。
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4.发明申请LASER BASED CAVITY ENHANCED OPTICAL ABSORPTION GAS ANALYZER WITH LASER FEEDBACK OPTIMIZATION 有权基于激光的加速光学吸收气体分析仪，具有激光反馈优化公开(公告)号：US20130083328A1
公开(公告)日：2013-04-04
申请号：US13252915
申请日：2011-10-04
IPC分类号： G01C19/66
CPC分类号： G01N21/8507 , G01N21/1702 , G01N21/3504 , G01N21/39
摘要： Optical feedback assisted cavity enhanced absorption spectroscopy systems and methods for measuring trace gases with improved long-term stability and reproducibility include a laser coupled with a resonant optical cavity containing a gaseous medium and having at least two cavity mirrors and a plurality of optical resonance cavity modes. The laser emits continuous wave laser light with a mean optical frequency of the laser being adjustable over a range of frequencies, and the laser is responsive to optical feedback light emerging from the cavity. The transmissivity of at least one of the cavity mirrors is selected such that the intensity of the optical feedback light impinging on the laser is below a threshold intensity value so as to ensure that a frequency hold interval range of the optical frequency of the laser is smaller than a free spectral range of the cavity.
摘要翻译： 用于测量具有改进的长期稳定性和再现性的痕量气体的光学反馈辅助腔增强吸收光谱系统和方法包括与包含气体介质并具有至少两个腔镜和多个光学谐振腔模的共振光学腔耦合的激光器 。 激光器发射连续波激光，激光的平均光频率可在一定频率范围内调节，并且激光器响应于从腔体出射的光反馈光。 选择至少一个腔镜的透射率，使得入射到激光器上的光反馈光的强度低于阈值强度值，以确保激光器的光频率的频率保持间隔范围更小 比空腔的自由光谱范围。
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公开(公告)号：US20110216311A1
公开(公告)日：2011-09-08
申请号：US13105795
申请日：2011-05-11
CPC分类号： G01N21/1702 , G01N21/39 , G01N2021/1704
摘要： A method and apparatus for the photo-acoustic identification and quantification of one or more analyte species present in a gaseous or liquid medium in low concentration utilizing a laser and a resonant optical cavity containing the medium and having within the cavity at least two partially transparent mirrors, one of which is a cavity coupling mirror and one of which is moveably mounted on an assembly responsive to an input signal.
摘要翻译： 一种用于利用激光器和含有介质的共振光学腔室在低浓度下存在于气体或液体介质中的一种或多种分析物质进行光声识别和定量的方法和装置，并且在空腔内具有至少两个部分透明的反射镜 ，其中一个是空腔耦合镜，其中一个可响应于输入信号可移动地安装在组件上。
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6.发明申请Method and apparatus for the photo-acoustic identification and quantification of analyte species in a gaseous or liquid medium 有权在气体或液体介质中进行光声识别和分析物质定量的方法和装置公开(公告)号：US20110214479A1
公开(公告)日：2011-09-08
申请号：US12660614
申请日：2010-03-02
IPC分类号： G01N21/00
CPC分类号： G01N21/1702 , G01N21/39 , G01N2021/1704
摘要： A method and apparatus for the photo-acoustic identification and quantification of one or more analyte species present in a gaseous or liquid medium in low concentration utilizing a laser and a resonant optical cavity containing the medium and having within the cavity at least two partially transparent mirrors, one of which is a cavity coupling mirror and one of which is moveably mounted on an assembly responsive to an input signal.
摘要翻译： 一种用于利用激光器和含有介质的共振光学腔室在低浓度下存在于气体或液体介质中的一种或多种分析物质进行光声识别和定量的方法和装置，并且在空腔内具有至少两个部分透明的反射镜 ，其中一个是空腔耦合镜，其中一个可响应于输入信号可移动地安装在组件上。
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7.发明授权Method and apparatus for the photo-acoustic identification and quantification of analyte species in a gaseous or liquid medium 有权在气体或液体介质中进行光声识别和分析物质定量的方法和装置公开(公告)号：US08327686B2
公开(公告)日：2012-12-11
申请号：US12660614
申请日：2010-03-02
IPC分类号： G01N21/00
CPC分类号： G01N21/1702 , G01N21/39 , G01N2021/1704
摘要： A method and apparatus for the photo-acoustic identification and quantification of one or more analyte species present in a gaseous or liquid medium in low concentration utilizing a laser and a resonant optical cavity containing the medium and having within the cavity at least two partially transparent mirrors, one of which is a cavity coupling mirror and one of which is moveably mounted on an assembly responsive to an input signal.
摘要翻译： 一种用于利用激光器和含有介质的共振光学腔室在低浓度下存在于气体或液体介质中的一种或多种分析物质进行光声识别和定量的方法和装置，并且在空腔内具有至少两个部分透明的反射镜 ，其中一个是空腔耦合镜，其中一个可响应于输入信号可移动地安装在组件上。
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公开(公告)号：US09678003B2
公开(公告)日：2017-06-13
申请号：US14156842
申请日：2014-01-16
CPC分类号： G01N21/39 , G01J3/4338 , G01N21/1702 , G01N21/59 , G01N21/61 , G01N29/2425 , G01N2021/1704 , G01N2201/023 , G01N2201/06113 , G01N2291/021
摘要： Systems and methods for measuring the isotope ratio of one or more trace gases and/or components of gas mixtures such as different gas species present in a gas mixture. The system includes a resonant optical cavity having two or more mirrors and containing a gas, the cavity having a free spectral range that equals the difference between frequencies of two measured absorption lines of different gas species in the gas, or of two different isotopes, divided onto an integer number. The system also includes a continuous-wave tunable laser optically coupled with the resonant optical cavity, and a detector system for measuring an absorption of laser light by the gas in the cavity. The detector system includes one of a photo-detector configured to measure an intensity of the intra-cavity light or both a photo-acoustic sensor configured to measure photo-acoustic waves generated in the cavity and a photo-detector configured to measure an intensity of the intra-cavity light.
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9.发明授权Method and apparatus for the photo-acoustic identification and quantification of analyte species in a gaseous or liquid medium 有权在气体或液体介质中进行光声识别和分析物质定量的方法和装置公开(公告)号：US08379206B2
公开(公告)日：2013-02-19
申请号：US13105779
申请日：2011-05-11
IPC分类号： G01N21/00
CPC分类号： G01N21/1702 , G01N21/39 , G01N2021/1704
摘要： A method and apparatus for the photo-acoustic identification and quantification of one or more analyte species present in a gaseous or liquid medium in low concentration utilizing a laser and a resonant optical cavity containing the medium and having within the cavity at least two partially transparent mirrors, one of which is a cavity coupling mirror and one of which is moveably mounted on an assembly responsive to an input signal.
摘要翻译： 一种用于利用激光器和含有介质的共振光学腔室在低浓度下存在于气体或液体介质中的一种或多种分析物质进行光声识别和定量的方法和装置，并且在空腔内具有至少两个部分透明的反射镜 ，其中一个是空腔耦合镜，其中一个可响应于输入信号可移动地安装在组件上。
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10.发明授权公开(公告)号：US07535573B2
公开(公告)日：2009-05-19
申请号：US11710029
申请日：2007-02-22
IPC分类号： G01B9/02
摘要： Improved ease of mode matching to a passive optical cavity is provided by selecting a cavity design that has a predetermined deviation from a reference cavity design having high transverse mode degeneracy. This predetermined deviation tends to be small, so that the first overlap of high-order transverse modes with the lowest order transverse mode in frequency occurs at relatively high transverse mode numbers. Coupling to high-order transverse modes is thereby reduced, since high-order transverse modes having relatively high transverse mode numbers tend to be more difficult to couple to, and tend to have high loss. During assembly of such a cavity, it can be useful to apply a perturbation to the cavity to further optimize mode matching. For example, the length of an enclosed cavity can be adjusted by altering the number and/or length of spacers in the cavity housing.
摘要翻译： 通过选择具有与具有高横向模式简并性的参考空腔设计具有预定偏差的空腔设计来提供对无源光腔的模式匹配的便利性。 该预定偏差倾向于较小，使得频率中最低阶横向模式的高阶横模的第一重叠在相对较高的横模数下发生。 因此，由于具有相对较高的横模数的高阶横模往往更困难地耦合到并且倾向于具有高的损耗，所以耦合到高阶横模是有所减少的。 在组装这样的空腔期间，将空间应用到空腔以进一步优化模式匹配是有用的。 例如，可以通过改变空腔壳体中的间隔件的数量和/或长度来调节封闭空腔的长度。
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