Ppb-level all-optical off-axis QEPAS gas sensor based on dual-wavelength demodulation of out-of-plane vibration mode
Jinbiao Zhao, Yufeng Pan, Ping Lü, Xiaohang Zhang, Tailin Li, Jiangshan Zhang, Chaotan Sima, Deming Liu
Topics & Concepts
Photoacoustic spectroscopyOpticsDemodulationMaterials scienceVibrationWavelengthOptoelectronicsLaserPhysicsComputer scienceAcousticsTelecommunicationsChannel (broadcasting)Spectroscopy and Laser ApplicationsAtmospheric Ozone and ClimateAtmospheric and Environmental Gas Dynamics