Gas Absorption Spectroscopy Apparatus, Non-Transitory Computer Readable Medium, And Control Method

A non-transitory computer readable medium where a control program is stored,

• the control program being to be executed by a computer that is for use in a gas absorption spectroscopy apparatus for analyzing a sample, the gas absorption spectroscopy apparatus comprising:
• a resonator configured to store the sample;
• a light source configured to output a laser beam to the resonator;
• an acousto-optic modulator disposed on an optical path between the light source and the resonator and configured to modulate a frequency of the laser beam according to a frequency of an input signal;
• and a photodetector configured to detect light output from the resonator,
• the control program causing the computer to execute the steps of:
• changing the frequency of the input signal to bring the laser beam in the resonator into a non-resonant state;
• and
• measuring a target component in the sample using a signal detected by the photodetector while the laser beam in the resonator is in the non-resonant state.

A control method for use in a gas absorption spectroscopy apparatus for analyzing a sample,

• the gas absorption spectroscopy apparatus comprising:
• a resonator configured to store the sample;
• a light source configured to output a laser beam to the resonator;
• an acousto-optic modulator disposed on an optical path between the light source and the resonator and configured to modulate a frequency of the laser beam according to a frequency of an input signal;
• and a photodetector configured to detect light output from the resonator, the control method comprising, as processing executed by a computer, the steps of:
• changing the frequency of the input signal to bring the laser beam in the resonator into a non-resonant state;
• and
• measuring a target component in the sample using a signal detected by the photodetector while the laser beam in the resonator is in the non-resonant state.