公开(公告)号：US20120283961A1

公开(公告)日：2012-11-08

申请号：US13462026

申请日：2012-05-02

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

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

IPC: G06F19/00 ,  G01N21/61

CPC classification number: G01N21/39 ,  G01N2021/399

Abstract: 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.

Abstract translation: 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：US20110110390A1

公开(公告)日：2011-05-12

申请号：US12628578

申请日：2009-12-01

Applicant: Bert Willing ,  Rui Protasio ,  Mathieu Gaillard

Inventor： Bert Willing ,  Rui Protasio ,  Mathieu Gaillard

IPC: H01S5/10 ,  H01S5/026

CPC classification number: G01N21/3504 ,  G01J3/10 ,  G01J3/42 ,  G01J2003/423 ,  G01N21/39 ,  G01N2021/399 ,  G01N2201/0612 ,  G01N2201/0633 ,  H01S5/02212 ,  H01S5/02296 ,  H01S5/02415 ,  H01S5/02438 ,  H01S5/0267 ,  H01S5/18388

Abstract: The invention relates to a laser diode structure, specifically for use in gas detection, with a hermetically sealed housing with electrical connections having a bottom and a window. A laser diode chip and a temperature control system for the laser diode chip are provided in the housing. A thermo element in the form of a Peltier element forms the temperature control system, and is connected via a lower flat surface to the bottom of the housing and via an upper flat surface to the laser diode chip, with a temperature-controlled beam shaping element as collimator provided between the laser diode chip and the window of the housing that acts on a laser beam emerging from a laser aperture of the laser diode chip before it passes through the window. The beam shaping element is in contact with the laser diode chip and is preferably connected via a boundary surface to the laser aperture with surface-to-surface contact or adhesively, or is made in one piece together with the laser aperture.

Abstract translation: 本发明涉及一种专门用于气体检测的激光二极管结构，其具有带有底部和窗口的电连接的气密密封外壳。 激光二极管芯片和用于激光二极管芯片的温度控制系统设置在壳体中。 形式为Peltier元件的热元件形成温度控制系统，并通过下平面连接到壳体的底部，并通过上平面连接到激光二极管芯片，具有温度控制的光束成形元件 作为在激光二极管芯片和壳体的窗口之间提供的准直器，其作用于在激光二极管芯片通过窗口之前从激光二极管芯片的激光孔径出射的激光束。 光束成形元件与激光二极管芯片接触，并且优选地通过边界面与表面接触或粘合地连接到激光器孔，或者与激光孔一起制成一个部件。

公开(公告)号：US09140644B2

公开(公告)日：2015-09-22

申请号：US13462026

申请日：2012-05-02

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

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

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

CPC classification number: G01N21/39 ,  G01N2021/399

Abstract: 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.

Abstract translation: 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：US08594143B2

公开(公告)日：2013-11-26

申请号：US12628578

申请日：2009-12-01

Applicant: Bert Willing ,  Rui Protasio ,  Mathieu Gaillard

Inventor： Bert Willing ,  Rui Protasio ,  Mathieu Gaillard

IPC: H01S3/04

CPC classification number: G01N21/3504 ,  G01J3/10 ,  G01J3/42 ,  G01J2003/423 ,  G01N21/39 ,  G01N2021/399 ,  G01N2201/0612 ,  G01N2201/0633 ,  H01S5/02212 ,  H01S5/02296 ,  H01S5/02415 ,  H01S5/02438 ,  H01S5/0267 ,  H01S5/18388

Abstract: The invention relates to a laser diode structure, specifically for use in gas detection, with a hermetically sealed housing with electrical connections having a bottom and a window. A laser diode chip and a temperature control system for the laser diode chip are provided in the housing. A thermo element in the form of a Peltier element forms the temperature control system, and is connected via a lower flat surface to the bottom of the housing and via an upper flat surface to the laser diode chip, with a temperature-controlled beam shaping element as collimator provided between the laser diode chip and the window of the housing that acts on a laser beam emerging from a laser aperture of the laser diode chip before it passes through the window. The beam shaping element is in contact with the laser diode chip and is preferably connected via a boundary surface to the laser aperture with surface-to-surface contact or adhesively, or is made in one piece together with the laser aperture.

Abstract translation: 本发明涉及一种专门用于气体检测的激光二极管结构，其具有带有底部和窗口的电连接的气密密封外壳。 激光二极管芯片和用于激光二极管芯片的温度控制系统设置在壳体中。 形式为Peltier元件的热元件形成温度控制系统，并通过下平面连接到壳体的底部，并通过上平面连接到激光二极管芯片，具有温度控制的光束成形元件 作为在激光二极管芯片和壳体的窗口之间提供的准直器，其作用于在激光二极管芯片通过窗口之前从激光二极管芯片的激光孔径出射的激光束。 光束成形元件与激光二极管芯片接触，并且优选地通过边界面与表面接触或粘合地连接到激光器孔，或者与激光孔一起制成一个部件。

公开(公告)号：US20130070797A1

公开(公告)日：2013-03-21

申请号：US13252294

申请日：2011-10-04

Applicant: Andreas WITTMANN ,  Michel STUDER ,  Rui PROTASIO ,  Corrado FRASCHINA

Inventor： Andreas WITTMANN ,  Michel STUDER ,  Rui PROTASIO ,  Corrado FRASCHINA

IPC: H01S5/183

CPC classification number: H01S5/0064 ,  H01S5/005 ,  H01S5/026 ,  H01S5/183

Abstract: Laser unit, preferably for gas detection, with a semiconductor laser chip comprising an output mirror with an exit zone for a laser beam and an optical element that reduces self-mixing which is arranged at the exit zone, wherein optical element and laser chip are connected with each other with direct physical contact over an entire surface, at least in the exit zone. Said optical element is connected to the laser chip positively or by means of an optical medium. Thereby optionally a beam-shaping element may be arranged on the optical element that is connected positively or by means of an optical medium with the optical element. Preferably beam-shaping element and optical element have similar or identical refractory indices and are connected with each other and with the laser chip by adhesive agents having corresponding refractory indices.

Abstract translation: 激光单元，优选用于气体检测，其中半导体激光芯片包括具有用于激光束的出射区域的输出反射镜和减少布置在出射区域的自混合的光学元件，其中光学元件和激光芯片被连接 彼此在整个表面上至少在出口区域具有直接的物理接触。 所述光学元件被正面地或通过光学介质连接到激光器芯片。 因此，可选地，光束成形元件可以被布置在光学元件上，该光学元件被正确地或通过光学介质与光学元件连接。 优选地，光束成形元件和光学元件具有相似或相同的耐火指数，并且通过具有相应耐火指数的粘合剂彼此连接并与激光芯片连接。