In the system, a tunable dioxide laser is used as a sensor source, and the method of wavelength modulated is adopted, then concentration of gas is determined through detecting the generated second harmonic by opto-electronics converter.
英
美
- 用可調諧二極管激光作為傳感光源，采用波長(cháng)調制方法，通過(guò)對諧波信號進(jìn)行光電探測可得氣體濃度。
