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1. 发明申请

WO2017153765A1 PHOTO-ACOUSTIC DETECTOR 审中-公开
标题翻译：光声探测器
公开(公告)号：WO2017153765A1
公开(公告)日：2017-09-14
申请号：PCT/GB2017/050639
申请日：2017-03-09
申请人： FRAUNHOFER UK RESEARCH LTD
发明人： STOTHARD, David
IPC分类号： G01N21/17 , G01N21/39
CPC分类号： G01N21/1702 , G01N2021/1704 , G01N2021/391 , G01N2021/399 , G01N2201/06113
摘要： A fluid sensor comprises a solid state laser comprising a solid state laser gain material in a laser cavity, wherein light emitted from the laser gain material is resonant in the laser cavity. The fluid sensor further comprises means for modulating light in the laser cavity to induce an acoustic or pressure wave caused by absorption of the resonant wave, and means located in the laser cavity for detecting the acoustic or pressure wave. The fluid sensor may be used for detecting a fluid such as a gas. The fluid sensor may be operable to detect very low levels of gas leaking from the surface of the earth or fugitive from a man-made object such as a processing plant. As an example, the gas may be ethane.
摘要翻译：流体传感器包括固态激光器，该固态激光器包括在激光腔中的固态激光增益材料，其中从激光增益材料发射的光在激光腔中谐振。流体传感器还包括用于调制激光腔中的光以诱导由吸收谐振波引起的声波或压力波的装置，以及位于激光腔中用于检测声波或压力波的装置。流体传感器可以用于检测诸如气体的流体。流体传感器可用于检测从地球表面泄漏的非常低水平的气体或从诸如加工厂的人造物体逃逸。例如，气体可能是乙烷。

2. 发明申请

WO2017046608A1 A PHOTOACOUSTIC SENSOR FOR DETECTING TRACE AMOUNTS OF HYDROCARBONS IN GASES OR LIQUIDS 审中-公开
标题翻译：用于检测气体或液体中碳氢化合物的追踪量的光电传感器
公开(公告)号：WO2017046608A1
公开(公告)日：2017-03-23
申请号：PCT/GB2016/052902
申请日：2016-09-16
申请人： FRAUNHOFER UK RESEARCH LTD
发明人： STOTHARD, David
IPC分类号： G01M3/38 , G01N29/24 , G01N21/17 , G02F1/39 , A61B5/08
CPC分类号： G01M3/38 , G01N21/1702 , G01N29/2425 , G01N29/4436 , G01N2021/1704 , G01N2291/02433 , G01N2291/0427 , G02F1/39
摘要： A photoacoustic sensor for detecting traces of hydrocarbons (e.g. ethane) in gases or liquids is disclosed. The sensor comprises an optical parametric oscillator (OPO) having a non-linear material (e.g. periodically poled lithium niobate crystal) adapted to convert via a parametric process pump light into down converted light of two different wavelengths (e.g. signal (-1.600 nm) and idler (preferably in the range of 3200-3400 nm)), wherein the non-linear material is provided in a down converted wave cavity arranged to resonate only one of the first or second wavelengths. The sensor also comprises means for modulating light (e.g. an etalon, grating, piezoelectric transducer (PZT)) in the down converted wave cavity to induce an acoustic or pressure wave caused by absorption of the resonant one of the first and second wavelengths. The means for modulating light may also modulate the primary power source (amplitude or frequency). The sensor further comprises means located in the down converted wave cavity for detecting the acoustic or pressure wave (preferably a quartz tuning fork having a microresonator tube).
摘要翻译：公开了一种用于检测气体或液体中的烃类（例如乙烷）痕量的光声传感器。该传感器包括具有非线性材料（例如，周期性极化的铌酸锂晶体）的光学参量振荡器（OPO），其适于经由参数过程泵浦光转换成两个不同波长的下变换光（例如信号（-1.600nm）和惰轮（优选在3200-3400nm的范围内）），其中非线性材料设置在布置成仅谐振第一或第二波长中的一个波长的下变换波腔中。传感器还包括用于调制下变换波腔中的光（例如标准具，光栅，压电换能器（PZT））的装置，以引起由吸收第一和第二波长的共振之一引起的声波或压力波。用于调制光的装置也可以调制主电源（振幅或频率）。该传感器还包括位于下变频波腔中的装置，用于检测声波或压力波（最好是具有微谐振器管的石英音叉）。

3. 发明申请

WO2021116450A1 SYSTEM, METHOD AND SENSOR DEVICE FOR SENSING A CHANGE IN A CONCENTRATION OF MICRO-ORGANISMS 审中-公开
公开(公告)号：WO2021116450A1
公开(公告)日：2021-06-17
申请号：PCT/EP2020/085838
申请日：2020-12-11
申请人： FRAUNHOFER UK RESEARCH LTD
发明人： SCULLION, Mark , HAUGHEY, Anne-Marie
IPC分类号： C12Q1/18 , G01N33/487 , G01N21/45 , B01L3/00 , G01N21/03 , G01N21/552
摘要： A sensor device for use in sensing a change in a concentration of micro-organisms, comprises a waveguide interferometer having a sensing arm and a reference arm, a microfluidic channel for a fluid containing the micro-organisms, and a trapping arrangement in the microfluidic channel for physically trapping the micro-organisms when the fluid flows along the microfluidic channel so as to concentrate the micro-organisms in a sensing region of the microfluidic channel. The sensing arm is configured to guide sensing light, the reference arm is configured to guide reference light, and the waveguide interferometer is configured to interfere the sensing light with the reference light. The waveguide interferometer and the microfluidic channel are configured to allow the sensing light to interact with the fluid and the micro-organisms in the sensing region of the microfluidic channel. The sensor device may be used for sensing a change in a concentration of micro-organisms such as bacteria as a result of growth of the micro- organisms. The sensor device may be used for sensing the susceptibility of the growth of the micro-organisms to one or more micro-organism growth-inhibiting substances such as one or more antibiotics. The present disclosure also relates to a reader apparatus for reading the sensor device and an associated method.

4. 发明申请

WO2021191593A2 SINGLE-FREQUENCY LASER APPARATUS 审中-公开
公开(公告)号：WO2021191593A2
公开(公告)日：2021-09-30
申请号：PCT/GB2021/050701
申请日：2021-03-22
申请人： FRAUNHOFER UK RESEARCH LTD
发明人： LAGATSKY, Alexander , MCKNIGHT, Loyd , STOTHARD, David
IPC分类号： H01S3/08 , H01S3/16 , H01S3/0941 , H01S3/1055 , H01S3/139 , H01S3/04 , H01S3/06 , H01S3/094 , H01S3/107 , H01S3/131 , H01S3/137 , H01S3/0401 , H01S3/0621 , H01S3/0623 , H01S3/0627 , H01S3/08009 , H01S3/08031 , H01S3/08036 , H01S3/08059 , H01S3/094096 , H01S3/09415 , H01S3/1312 , H01S3/1317 , H01S3/1392 , H01S3/162 , H01S3/1623 , H01S3/1625 , H01S3/1628 , H01S3/1633 , H01S3/1636 , H01S3/1648 , H01S3/1658
摘要： A single-frequency laser apparatus comprises a mirror and a volume Bragg grating (VBG) reflector defining a laser cavity therebetween and an optical gain material for emitting and amplifying an intra-cavity beam in the laser cavity. The optical gain material comprises a transition-metal doped crystal such as a crystal doped with transition-metal ions selected from one or more of Ti3+ ions, Cr2+ ions, Cr3+ ions or Cr4+ ions. A reflectivity spectrum of the VBG reflector and an optical length of the laser cavity are selected so that a beam output from the laser cavity is a single-frequency output beam and/or includes only one longitudinal mode of the laser cavity. The laser apparatus may provide a robust, compact, low cost, high-power wavelength adjustable (from approximately 650 to 950 nm), narrow linewidth (

5. 发明申请

WO2017216581A1 LIDAR 审中-公开
公开(公告)号：WO2017216581A1
公开(公告)日：2017-12-21
申请号：PCT/GB2017/051770
申请日：2017-06-16
申请人： FRAUNHOFER UK RESEARCH LTD
发明人： WARDEN, Matthew S.
IPC分类号： G01S17/32 , G01S17/58
CPC分类号： G01S17/325 , G01S17/58
摘要： A method for determining range and velocity information for a collection of moving scatterers comprises frequency modulating and/or phase modulating continuous wave light to form a modulated signal beam. The method comprises transmitting the modulated signal beam to the collection of scatterers, detecting light back-scattered by the collection of scatterers, and analysing the detected signal using a matched filter to provide range and velocity information for the collection of scatterers. The scatterers may comprise atmospheric aerosols. The system may be used to provide a measure of wind speed and/or a measure of air turbulence.
摘要翻译：用于确定移动散射体集合的距离和速度信息的方法包括对连续波光进行频率调制和/或相位调制以形成调制信号波束。该方法包括将调制信号光束发射到散射体集合，检测由散射体集合反向散射的光，并且使用匹配滤波器分析检测到的信号以提供用于散射体集合的距离和速度信息。散射体可以包括大气气溶胶。该系统可用于提供风速测量和/或空气湍流度量。

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