Application of Wavelength Control Technology in Mine-used Laser Methane Sensor

The sensor based on TDLAS technology is gradually spread in the field of disaster gas detection of coal mine. Stable and reliable control for the laser wavelength is the important guarantee to realize the high accuracy, low error for detection equipments. This article introduces a control method for laser wavelength by combination of current and temperature adjustment, which can improve advantages and performance of absorption spectrum detection technology in coal mine disaster gas detection process.