OPTIMIZATION OF THE LASER OPERATING POINT IN A LASER ABSORPTION SPECTROMETER

摘要

An operating value of a first laser parameter of a laser device in a laser absorption spectrometer is optimized. The wavelength of laser device emitted light is adjusted by the first or a second laser parameter. The laser absorption spectrometer comprises a light intensity detector measuring the laser light intensity from the laser device. For each of multiple values of the first laser parameter: the light intensity detector measures light intensity obtained across a range of second laser parameter values, and an extremum in the light intensity measure and a peak position for the extremum are identified. A range of first laser parameter values is identified within the values of the first laser parameter for which there is a continuous trend in changes to the identified peak position with changes to the first laser parameter. The first laser parameter operating value is set to be within the identified range.

主权项

1. A method for optimizing an operating value of a first laser parameter of a laser device in a laser absorption spectrometer, wherein the wavelength of laser light emitted from the laser device is variable by adjusting either of the first laser parameter and a second laser parameter of the laser device, and wherein the laser absorption spectrometer includes a light intensity detector configured to measure the intensity of laser light received from the laser device, the method comprising:
for each of a plurality of values of the first laser parameter:
obtaining a measure of light intensity received at the light intensity detector across a range of values of the second laser parameter;identifying an extremum in the measure of light intensity; andidentifying a peak position for the extremum; identifying a range of values of the first laser parameter within the plurality of values of the first laser parameter for which there is a continuous trend in changes to the identified peak position with changes to the first laser parameter; and setting the operating value of the first laser parameter to be within the identified range of values of the first laser parameter.