公开(公告)号：US20120283961A1

公开(公告)日：2012-11-08

申请号：US13462026

申请日：2012-05-02

申请人： Andreas WITTMANN ,  Stefan MANZENEDER ,  Rui PROTASIO ,  Michel STUDER ,  Thomas HESSLER

发明人： Andreas WITTMANN ,  Stefan MANZENEDER ,  Rui PROTASIO ,  Michel STUDER ,  Thomas HESSLER

IPC分类号： G06F19/00 ,  G01N21/61

CPC分类号： G01N21/39 ,  G01N2021/399

摘要： This invention relates to a method that makes the measurement of a trace gas concentration invariant or at least less affected to pressure variations in the gas and atmospheric pressure changes. This method neither requires a pressure sensor nor a pressure calibration routine. Furthermore, the method can be applied to other gas species present in the background gas or to the background gas itself that cross-interfere with the target gas of interest. This allows removing any pressure dependency of cross-interference parameters of other gas species and/or the background gas. The new method for accurately measuring a gas concentration is based on optimizing the wavelength modulation amplitude of the laser to minimum pressure dependency.

摘要翻译： 本发明涉及一种使痕量气体浓度测量不变或至少受气体和大气压力变化的压力变化影响的方法。 该方法既不需要压力传感器也不需要压力校准程序。 此外，该方法可以应用于背景气体中的其它气体物质或与目标气体交叉干扰的背景气体本身。 这允许消除其他气体种类和/或背景气体的交叉干扰参数的任何压力依赖性。 用于精确测量气体浓度的新方法是基于将激光器的波长调制幅度优化为最小压力依赖性。

公开(公告)号：US08199786B2

公开(公告)日：2012-06-12

申请号：US12779144

申请日：2010-05-13

申请人： Mathieu Gaillard ,  Bert Willing ,  Stefan Manzeneder

发明人： Mathieu Gaillard ,  Bert Willing ,  Stefan Manzeneder

IPC分类号： H01S3/04

CPC分类号： H01S5/02288 ,  G01N2021/399 ,  H01S5/005 ,  H01S5/0071 ,  H01S5/0085 ,  H01S5/02292 ,  H01S5/02296 ,  H01S5/02415 ,  H01S5/0656 ,  H01S2301/02

摘要： A laser diode structure for generating a collimated or divergent laser beam, preferably for application in gas detection, with a laser diode arranged in a closed housing, with the housing comprising a housing bottom, an exit window, electrical connections, a temperature control device for the laser diode, and an optical element for influencing the laser beam. The temperature control device carrying the laser diode is arranged on the housing bottom and the optical element is positioned at a distance from the laser diode. The invention proposes an electrically controllable power device for the cyclic alteration of the position and/or alignment of the optical element in relation to the laser diode so that the optical path length for the laser beam in the housing changes periodically. The oscillating motion of the optical element has the effect of time-averaging the etalon and/or self-mixing effects caused by the back-reflections of the laser beam in the housing, thereby reducing the optical noise of the laser diode structure.

摘要翻译： 一种激光二极管结构，用于产生准直或发散的激光束，优选地用于气体检测，激光二极管布置在封闭的壳体中，壳体包括壳体底部，出射窗口，电连接件，温度控制装置 激光二极管和用于影响激光束的光学元件。 携带激光二极管的温度控制装置布置在壳体底部上，并且光学元件位于离激光二极管一定距离处。 本发明提出了一种电可控的功率器件，用于相对于激光二极管的光学元件的位置和/或对准的循环改变，使得壳体中的激光束的光路长度周期性地变化。 光学元件的振荡运动具有对由壳体中的激光束进行背反射引起的标准具和/或自混合效果进行时间平均的效果，从而降低激光二极管结构的光学噪声。

公开(公告)号：US09140644B2

公开(公告)日：2015-09-22

申请号：US13462026

申请日：2012-05-02

申请人： Andreas Wittmann ,  Stefan Manzeneder ,  Rui Protasio ,  Michel Studer ,  Thomas Hessler

发明人： Andreas Wittmann ,  Stefan Manzeneder ,  Rui Protasio ,  Michel Studer ,  Thomas Hessler

IPC分类号： G06F19/00 ,  G01N21/61 ,  G01N21/39

CPC分类号： G01N21/39 ,  G01N2021/399

摘要： This invention relates to a method that makes the measurement of a trace gas concentration invariant or at least less affected to pressure variations in the gas and atmospheric pressure changes. This method neither requires a pressure sensor nor a pressure calibration routine. Furthermore, the method can be applied to other gas species present in the background gas or to the background gas itself that cross-interfere with the target gas of interest. This allows removing any pressure dependency of cross-interference parameters of other gas species and/or the background gas. The new method for accurately measuring a gas concentration is based on optimizing the wavelength modulation amplitude of the laser to minimum pressure dependency.

摘要翻译： 本发明涉及一种使痕量气体浓度测量不变或至少受气体和大气压力变化的压力变化影响的方法。 该方法既不需要压力传感器也不需要压力校准程序。 此外，该方法可以应用于背景气体中的其它气体物质或与目标气体交叉干扰的背景气体本身。 这允许消除其他气体种类和/或背景气体的交叉干扰参数的任何压力依赖性。 用于精确测量气体浓度的新方法是基于将激光器的波长调制幅度优化为最小压力依赖性。

公开(公告)号：US20110216793A1

公开(公告)日：2011-09-08

申请号：US12779144

申请日：2010-05-13

申请人： Mathieu GAILLARD ,  Bert WILLING ,  Stefan MANZENEDER

发明人： Mathieu GAILLARD ,  Bert WILLING ,  Stefan MANZENEDER

IPC分类号： H01S3/04

CPC分类号： H01S5/02288 ,  G01N2021/399 ,  H01S5/005 ,  H01S5/0071 ,  H01S5/0085 ,  H01S5/02292 ,  H01S5/02296 ,  H01S5/02415 ,  H01S5/0656 ,  H01S2301/02

摘要： A laser diode structure for generating a collimated or divergent laser beam, preferably for application in gas detection, with a laser diode arranged in a closed housing, with the housing comprising a housing bottom, an exit window, electrical connections, a temperature control device for the laser diode, and an optical element for influencing the laser beam. The temperature control device carrying the laser diode is arranged on the housing bottom and the optical element is positioned at a distance from the laser diode. The invention proposes an electrically controllable power device for the cyclic alteration of the position and/or alignment of the optical element in relation to the laser diode so that the optical path length for the laser beam in the housing changes periodically. The oscillating motion of the optical element has the effect of time-averaging the etalon and/or self-mixing effects caused by the back-reflections of the laser beam in the housing, thereby reducing the optical noise of the laser diode structure.

摘要翻译： 一种激光二极管结构，用于产生准直或发散的激光束，优选地用于气体检测，激光二极管布置在封闭的壳体中，壳体包括壳体底部，出射窗口，电连接件，温度控制装置 激光二极管和用于影响激光束的光学元件。 携带激光二极管的温度控制装置布置在壳体底部上，并且光学元件位于离激光二极管一定距离处。 本发明提出了一种电可控的功率器件，用于相对于激光二极管的光学元件的位置和/或对准的循环改变，使得壳体中的激光束的光路长度周期性地变化。 光学元件的振荡运动具有对由壳体中的激光束进行背反射引起的标准具和/或自混合效果进行时间平均的效果，从而降低激光二极管结构的光学噪声。