Gas detection device

Details Gas detection device Gas detection device

G - Physics

01

N

73/55

G01N 21/25 (2006.01) G01N 21/39 (2006.01) G02B 3/00 (2006.01)

Patent

CA 2038980

ABSTRACT The present invention relates to a gas detection device which comprises a laser which generates a laser beam of wave length and intensity corresponding to a drive current and the temperature, and a laser drive circuit which modulates the drive power source of the laser at a specified amplitude centered around a specified temperature and a specified current value with a means of stabilizing the wavelength by which the central wavelength of the laser beam generated by the laser is stabilized at a specific position on a special gas absorption line. The device also comprises a beam detection apparatus which detects the intensity of the laser beam after the laser beam passes through the measuring object gas atmosphere, and a measuring means which performs a quantitative measurement of a specific gas based on the output of the beam detection apparatus.

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