Tunable diode laser absorption spectroscopy(TDLAS)is a new technology that uses the wavelength scanning and current tuning characteristics of diode laser to realize the micro gas leak detection,which has the advantages of high sensitivity,high precision and fast response speed.Using CiteSpace software and bibliometric method,a visual analysis is made on the evolution context and hot trend of TDLAS from 2013 to 2023.The results indicate that TDLAS has good research and application value in the field of methane detection.In the future,China should strengthen the research on denoising algorithm and methane micro leak detection device based on quadruped robots.
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