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1. 发明授权

US08327686B2 Method and apparatus for the photo-acoustic identification and quantification of analyte species in a gaseous or liquid medium 有权
标题翻译：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
申请人： Alexander Kachanov , Serguei Koulikov
发明人： Alexander Kachanov , Serguei Koulikov
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。

2. 发明申请

US20080144007A1 Thermal lens spectroscopy for ultra-sensitive absorption measurement 审中-公开
标题翻译：用于超灵敏吸收测量的热透镜光谱
公开(公告)号：US20080144007A1
公开(公告)日：2008-06-19
申请号：US11998495
申请日：2007-11-30
申请人： Alexander Kachanov
发明人： Alexander Kachanov
IPC分类号： G01J3/00 , G01N21/00 , G01J3/44
CPC分类号： G01N21/00 , G01N21/171 , G01N21/64 , G01N21/65 , G01N2021/1712
摘要： A thermal lens detection apparatus comprising: i) an optical cell for containing at least one target analyte present in a carrier liquid, ii) a probe beam having a pre-determined wavelength, iii) an excitation beam having a pre-determined wavelength shorter than that of the probe beam and a Rayleigh length approximately equal to the radius of said optical cell, the beam axis of said probe beam and the beam axis of said excitation beam being at an angle to each other but both the probe beam and excitation beam being focusable so that their beams overlap in the interior portion of the optical cell, iv) a signal photo-detector for receiving at least a portion of said probe beam signal after its passage through said optical cell, and iv) an optical cutoff filter which blocks the excitation beam from impinging on said signal photo-detector.
摘要翻译：一种热透镜检测装置，包括：i）用于容纳存在于载体液体中的至少一种目标分析物的光学单元，ii）具有预定波长的探测光束，iii）具有预定波长的激发光束短于探测光束和瑞利长度近似等于所述光学单元的半径的距离，所述探测光束的光束轴线和所述激发光束的光束轴线彼此成一定角度，但探测光束和激发光束都是可聚焦，使得它们的光束在光学单元的内部部分重叠，iv）信号光检测器，用于在其通过所述光学单元之后接收所述探测光束信号的至少一部分，以及iv）光学截止滤光器，其阻挡激发光束照射在所述信号光检测器上。

3. 发明申请

US20060165138A1 Frequency doubling of semiconductor lasers to generate 300-600 nm light 审中-公开
标题翻译：半导体激光器的倍频产生300-600nm的光
公开(公告)号：US20060165138A1
公开(公告)日：2006-07-27
申请号：US11055882
申请日：2005-02-11
申请人： Alexander Kachanov , Sze Tan , Boris Kharlamov , Barbara Paldus
发明人： Alexander Kachanov , Sze Tan , Boris Kharlamov , Barbara Paldus
IPC分类号： H01S3/10 , H01S3/04
CPC分类号： H01S5/02248 , H01S5/0092 , H01S5/02438 , H01S5/06837
摘要： A novel control system for a simple and compact all-solid-state laser generating 300 nm to 600 nm nm light with continuously variable output power in the range from 1 mW to at least 120 mW. Single frequency radiation from an external cavity semiconductor laser is frequency doubled in, for example, a periodically poled MgO:LiNbO3 ridge waveguide. Our laser maintains a high quality TEM00 circular beam with M2
摘要翻译：一种用于简单紧凑的全固体激光器的新型控制系统，其产生300nm至600nmnm的光，其连续可变输出功率在1mW至至少120mW的范围内。来自外部腔半导体激光器的单频辐射在例如周期性极化的MgO：LiNbO 3脊波导中倍频。我们的激光器保持了具有M <2> <1.1的高品质TEM 圆形光束，并且非常低。在其输出功率范围内噪声小于0.06％。即使在长时间运行期间也能看到峰峰值输出功率变化小于0.1％。在一个示例中，在70mW的输出功率下操作时不会观察到转换效率的降低，并且激光具有5cm×8cm的小的占地面积。

4. 发明申请

US20060165137A1 Novel external cavity CW frequency doubling of semiconductor lasers to generate 300-600nm light 审中-公开
标题翻译：新型外腔CW倍频半导体激光器产生300-600nm光
公开(公告)号：US20060165137A1
公开(公告)日：2006-07-27
申请号：US11040889
申请日：2005-01-21
申请人： Alexander Kachanov , Boris Kharlamov , Sze Tan , Barbara Paldus
发明人： Alexander Kachanov , Boris Kharlamov , Sze Tan , Barbara Paldus
IPC分类号： H01S3/10 , H01S3/04
CPC分类号： H01S5/02248 , H01S5/0021 , H01S5/0092 , H01S5/02438 , H01S5/06837
摘要： A novel control system for a simple and compact all-solid-state laser generating 300 nm to 600 nm nm light with continuously variable output power in the range from 1 mW to at least 120 mW. Single frequency radiation from an external cavity semiconductor laser is frequency doubled in a periodically poled MgO:LiNbO3 waveguide. The laser maintains a high quality TEM00 circular beam with M2
摘要翻译：一种用于简单紧凑的全固体激光器的新型控制系统，其产生300nm至600nmnm的光，其连续可变输出功率在1mW至至少120mW的范围内。来自外部腔半导体激光器的单频辐射在周期性极化的MgO：LiNbO 3波导中倍频。激光器在整个输出功率范围内保持具有M≥2的高品质TEM 00圆形光束和小于0.06％的非常低的噪声。在长时间运行期间测量峰峰值输出功率变化小于0.1％。在一个示例中，在输出功率为70mW的操作下并没有观察到转换效率的劣化，并且激光器具有仅5×8cm的小占地面积。

5. 发明申请

US20060084180A1 Method for increasing the dynamic range of a cavity enhanced optical spectrometer 审中-公开
标题翻译：增加腔增强型光谱仪的动态范围的方法
公开(公告)号：US20060084180A1
公开(公告)日：2006-04-20
申请号：US10966315
申请日：2004-10-14
申请人： Barbara Paldus , Bruce Richman , Alexander Kachanov , Eric Crosson
发明人： Barbara Paldus , Bruce Richman , Alexander Kachanov , Eric Crosson
IPC分类号： G01N24/00
CPC分类号： G01N21/3504 , G01N21/39
摘要： Target analytes present in low concentration as components in a gaseous admixture can be detected using a cavity enhanced optical spectrometer by a process comprising: i) identifying from the spectrum of the pure target analyte a series of absorption peaks free from spectral interference by peaks of any additional gaseous species which are present, the first member of the series being the strongest spectral absorption peak of said target analyte ii) identifying one or more successive peaks of the series which have an absorption that is weaker than the immediately previously identified peak of the series, iii) performing a spectral scan at the wavelengths of the peaks identified in steps i) and ii), and iv) calculating the concentration of the target analyte from the spectral scan of the admixture performed at the wavelength determined in step iii).
摘要翻译：以气体混合物中的组分存在的目标分析物可以使用空腔增强型光谱仪通过以下方法来检测，所述方法包括：i）从纯的目标分析物的光谱中鉴定出一系列没有光谱干扰的吸收峰，存在的另外的气体物质，该系列的第一个成员是所述目标分析物的最强光谱吸收峰。ii）识别该系列的一个或多个连续的峰，其吸收比紧接着之前鉴定的该序列峰，iii）在步骤i）和ii）中确定的峰的波长处执行光谱扫描，以及iv）从在步骤iii）中确定的波长执行的混合物的光谱扫描计算目标分析物的浓度。

6. 发明申请

US20150276590A1 CAVITY ENHANCED LASER BASED ISOTOPIC GAS ANALYZER 有权
标题翻译： CAVITY增强型激光基于同位素气体分析仪
公开(公告)号：US20150276590A1
公开(公告)日：2015-10-01
申请号：US14734895
申请日：2015-06-09
申请人： Serguei Koulikov , Alexander Kachanov
发明人： Serguei Koulikov , Alexander Kachanov
IPC分类号： G01N21/39 , G01N21/59
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.
摘要翻译：用于测量气体混合物中存在的气体混合物（例如不同气体物质）的一种或多种痕量气体和/或组分的同位素比的系统和方法。该系统包括具有两个或更多个反射镜并且包含气体的谐振光学腔，空腔具有等于气体中不同气体种类或两个不同同位素的两个测量的吸收线的频率之间的差的自由光谱范围到一个整数。该系统还包括与谐振光腔光学耦合的连续波可调谐激光器，以及用于测量腔内的气体对激光的吸收的检测器系统。检测器系统包括被配置为测量腔内光强度或被配置为测量在空腔中产生的光声波的光声传感器的光检测器和被配置为测量腔内光的强度的光检测器腔内光。

7. 发明申请

US20140192347A1 CAVITY ENHANCED LASER BASED ISOTOPIC GAS ANALYZER 审中-公开
标题翻译： CAVITY增强型激光基于同位素气体分析仪
公开(公告)号：US20140192347A1
公开(公告)日：2014-07-10
申请号：US14156842
申请日：2014-01-16
申请人： Serguei Koulikov , Alexander Kachanov
发明人： Serguei Koulikov , Alexander Kachanov
IPC分类号： G01N21/61
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.
摘要翻译：用于测量气体混合物中存在的气体混合物（例如不同气体物质）的一种或多种痕量气体和/或组分的同位素比的系统和方法。该系统包括具有两个或更多个反射镜并且包含气体的谐振光学腔，空腔具有等于气体中不同气体种类或两个不同同位素的两个测量的吸收线的频率之间的差的自由光谱范围到一个整数。该系统还包括与谐振光腔光学耦合的连续波可调谐激光器，以及用于测量腔内的气体对激光的吸收的检测器系统。检测器系统包括被配置为测量腔内光强度或被配置为测量在空腔中产生的光声波的光声传感器的光检测器和被配置为测量腔内光的强度的光检测器腔内光。

8. 发明申请

US20110214480A1 METHOD AND APPARATUS FOR THE PHOTO-ACOUSTIC IDENTIFICATION AND QUANTIFICATION OF ANALYTE SPECIES IN A GASEOUS OR LIQUID MEDIUM 有权
公开(公告)号：US20110214480A1
公开(公告)日：2011-09-08
申请号：US13105779
申请日：2011-05-11
申请人： Alexander Kachanov , Serguei Koulikov
发明人： Alexander Kachanov , Serguei Koulikov
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.

9. 发明申请

US20060082778A1 Method for increasng the dynamic range of a cavity enhanced optical spectrometer 有权
标题翻译：增加腔增强光谱仪的动态范围的方法
公开(公告)号：US20060082778A1
公开(公告)日：2006-04-20
申请号：US10966314
申请日：2004-10-14
申请人： Barbara Paldus , Bruce Richman , Alexander Kachanov , Eric Crosson
发明人： Barbara Paldus , Bruce Richman , Alexander Kachanov , Eric Crosson
IPC分类号： G01N21/00
CPC分类号： G01N21/39
摘要： A gaseous target analyte present as a minor constituent in an admixture with at least one other gaseous species can be detected using a cavity enhanced optical spectrometer by a process comprising the steps of: i) identifying a plurality of strong spectral absorption peaks of the target analyte which are present within the scanning range of the spectrometer, ii) determining for the identified peaks the pressure region above which the peak width increases substantially with increasing pressure and below which the peak width is substantially independent of pressure, iii) determining which of the peaks identified in step i) are, within the pressure region determined in step ii), free from spectral interference by any of the other components of the admixture. iv) measuring the spectrum of the admixture at the pressure region identified in step ii).
摘要翻译：可以使用空腔增强型光谱仪通过包括以下步骤的方法检测与至少一种其它气态物质混合物中作为次要成分存在的气态目标分析物：i）鉴定目标分析物的多个强光谱吸收峰它们存在于光谱仪的扫描范围内，ii）确定所识别的峰的压力区域，在该压力区域上，峰宽度随着压力的增加而基本上增加并且低于该压力峰值宽度基本上与压力无关，iii）确定哪个峰值在步骤i）中确定的压力区域在步骤ii）中确定的压力区域内，不受混合物中任何其它组分的光谱干扰。 iv）测量在步骤ii）中鉴定的压力区域上的混合物的光谱。

10. 发明授权

US08539816B2 Method and apparatus for locking a laser with a resonant cavity 有权
标题翻译：用于锁定具有谐振腔的激光器的方法和装置
公开(公告)号：US08539816B2
公开(公告)日：2013-09-24
申请号：US13105795
申请日：2011-05-11
申请人： Alexander Kachanov , Serguei Koulikov
发明人： Alexander Kachanov , Serguei Koulikov
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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