In wavelength modulation absorption spectroscopy technology research in China has made new

Recently, chuzhou organic matter research institute of Chinese Academy of Sciences of henan photoelectric precision hardware lab researcher xiao-ming gao team in ascension absorbance demodulation spectrum measurement system, the new development of reliability level for the scientific research achievements in the absorbance of particles in the gas sensor demodulation spectrum frequency locking and intensity are technology study '( 激光频率锁定和强度归一化在波长调制光谱敏感气体传感) Published under the title, in the international academic journal called Express. ALLAN variance results under different standard according to spectral technology in air confirmed trace gas detection, diagnosis and treatment and manufacturing process management, and other industries have widespread use. Research associate professor Wang Guishi many for the first time using way of scanning frequency lock to keep the laser generator output frequency lock, prevent the beam frequency drift, improve the reliability of the system. Together according to the real-time detection of the adsorption of demodulation signal amplitude as a reference to keep the determination of detection of light intensity fluctuations in the process of aging is namely, remove the beam intensity change the harm of absorbance measurement results, improve the reliability and accuracy of the measurement system. The process to improve spectral characteristics of the measuring equipment with the use of the key value. Discuss with the worker do national priority development plan and the national natural science fund support, etc. ( The original title: hefei institute in the absorption spectra of absorbance demodulation technology to explore new progress) ( This article source: Chinese Academy of Sciences, turn cut, please mark the source)

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