公开(公告)号：US20190305514A1

公开(公告)日：2019-10-03

申请号：US16303107

申请日：2017-05-19

Applicant: HUMEDICS GMBH

Inventor： Axel LUCHTERHAND ,  Alexander HELMKE ,  Tom RUBIN ,  Karsten HEYNE

IPC: H01S5/0687 ,  G01J3/02 ,  G01J3/28 ,  G01J3/26 ,  H01S3/13 ,  H01S5/024 ,  H01S5/34

Abstract: A method for controlling the emission frequency of a laser comprises: recording a first spectrum by passing a laser light emitted by the laser through a sample onto a detector, the detector being connected to a multichannel analyzer which assigns pulses detected by the detector to a channel; determining a first channel to which the maximum of a first signal in the first spectrum has been assigned; determining a second channel to which the maximum of a second signal in the first spectrum has been assigned; recording a second spectrum in analog fashion like the first spectrum; determining whether the maximum of the first signal in the second spectrum has been assigned to the first channel and whether the maximum of the second signal in the second spectrum has been assigned to the second channel; adjusting the operating temperature of the laser in the event of deviations determined in the previous step.

公开(公告)号：US20170052069A1

公开(公告)日：2017-02-23

申请号：US15307344

申请日：2015-04-28

Applicant: HUMEDICS GMBH

Inventor： Tom RUBIN ,  Karsten HEYNE

IPC: G01J5/00 ,  G01J5/10 ,  G01N21/3504

CPC classification number: G01J5/0014 ,  G01J3/427 ,  G01J5/10 ,  G01J5/60 ,  G01N21/3504 ,  G01N2201/06113 ,  G01N2201/12

Abstract: A method for determining the temperature of an infrared-active gas by means of infrared spectroscopy is provided. The method comprising: radiating infrared light in a spectral range of 700 cm−1 to 5000 cm−1 originating from an infrared light source onto the gas; obtaining a first absorption-related parameter originating from measuring a first infrared absorption band of the gas, wherein the first infrared absorption band is a hot band being caused by thermal population of at least one vibrational mode of the gas; obtaining a second absorption-related parameter originating from measuring a second infrared absorption band of the gas, and calculating a ratio between the first absorption-related parameter and the second absorption-related parameter. The method is characterized in that the ratio is used to determine the temperature of the gas, wherein the ratio has a relative change of at least 0.5% per Kelvin temperature difference of the gas.

Abstract translation: 提供了通过红外光谱测定红外线活性气体的温度的方法。 该方法包括：将来自红外光源的700cm -1至5000cm -1的光谱范围的红外光辐射到气体上; 获得源自测量所述气体的第一红外吸收带的第一吸收相关参数，其中所述第一红外吸收带是由所述气体的至少一个振动模式的热群引起的热带; 获得源自测量气体的第二红外吸收带的第二吸收相关参数，以及计算第一吸收相关参数和第二吸收相关参数之间的比率。 该方法的特征在于，该比率用于确定气体的温度，其中该比率具有至少0.5％的每个开尔文温度差的气体的相对变化。