Abstract: A laser gas analyzer includes a wavelength-variable laser having a wide wavelength-variable width, a light-split module configured to split an output light of the wavelength-variable laser into a measurement light and a reference light, a first gas cell into which gases to be measured are introduced, and the measurement light is made to be incident, and a data processor configured to obtain an absorption spectrum of each of the gases to be measured based on a reference signal related to the reference light and an absorption signal related to an output light of the first gas cell, and to obtain concentrations of the respective gases to be measured.

Abstract: A gas concentration analyzer includes: a light emitting module configured to emit a laser light with which an ethylene gas that is a measurement target gas is irradiated; a light receiving module configured to receive the laser light that has passed through the measurement target gas to output a light receiving signal; and a calculation controller configured to calculate an absorption spectrum of the laser light using the light receiving signal, and to calculate amounts of methane and amounts of ethane in the ethylene gas that is the measurement target gas based on the absorption spectrum, wherein the laser light with which the measurement target gas is irradiated is included in a wavelength region with a wavelength of 3.42 ?m or more and 3.71 ?m or less.

Abstract: A laser gas analyzer includes a wavelength-variable laser having a wide wavelength-variable width, a light-split module configured to split an output light of the wavelength-variable laser into a measurement light and a reference light, a first gas cell into which gases to be measured are introduced, and the measurement light is made to be incident, and a data processor configured to obtain an absorption spectrum of each of the gases to be measured based on a reference signal related to the reference light and an absorption signal related to an output light of the first gas cell, and to obtain concentrations of the respective gases to be measured.

Abstract: An optical system for generating at least one beam of reference light according to one aspect of the present invention includes an optical emitter configured to emit a first beam of light, and a beam splitter configured to split the first beam into a second beam of measuring light for irradiating a target to be measured and at least one third beam of reference light. The beam splitter is disposed to make an incident angle of the first beam into the beam splitter be less than 10 degrees.

Abstract: A laser gas analyzer includes a wavelength-variable laser having a wide wavelength-variable width, a light-split module configured to split an output light of the wavelength-variable laser into a measurement light and a reference light, a first gas cell into which gases to be measured are introduced, and the measurement light is made to be incident, and a data processor configured to obtain an absorption spectrum of each of the gases to be measured based on a reference signal related to the reference light and an absorption signal related to an output light of the first gas cell, and to obtain concentrations of the respective gases to be measured.

Abstract: A laser gas analyzer includes a wavelength-variable laser having a wide wavelength-variable width, a light-split module configured to split an output light of the wavelength-variable laser into a measurement light and a reference light, a first gas cell into which gases to be measured are introduced, and the measurement light is made to be incident, and a data processor configured to obtain an absorption spectrum of each of the gases to be measured based on a reference signal related to the reference light and an absorption signal related to an output light of the first gas cell, and to obtain concentrations of the respective gases to be measured.