State-of-the-art Laser Gas Sensing Technologies

• Format: eBook
• Language: English
• Published: MDPI - Multidisciplinary Digital Publishing Institute 2020
• Subjects: History of engineering and technology; 13CO2/12CO2 isotope ratio detection; a multi-reflection chamber; absorption spectroscopy; algorithm; all-fiber laser; broadband spectrum; C2H2 detection; carbon dioxide monitoring; chicken swarm optimization; combustion diagnostic; combustion sensing; concentration prediction; continuous-wave (CW); coupling efficiency; deep-sea natural gas hydrate exploration; design optimization; detection limit; diffuse integrating cavity; direct absorption spectroscopy (DAS); femtosecond laser; femtosecond laser electronic excitation tagging; femtosecond laser-induced breakdown spectroscopy; femtosecond laser-induced plasma spectroscopy; filament-induced nonlinear spectroscopy; finite-element analysis; frequency modulation spectroscopy; gas detection; gas sensing; graphene saturable absorber; GRIN fiber probe; Ho:LuVO4 laser; hollow-core photonic crystal fiber; information processing technology; interband cascade lasers; interferometric gas detection; intracavity gas detection; laser absorption spectroscopy (LAS); laser spectroscopy; methane; methane detection; MgO:PPLN crystal; mid-infrared; mid-infrared fingerprint spectrum; mid-infrared ICL; n/a; near-infrared; noise reduction algorithms; non-linearity; optical parametric oscillator; optical parametric oscillator (OPO); optical sensing; photothermal spectroscopy; PQS; practical applications; quantum cascade lasers; quartz tuning fork; quartz-enhanced photoacoustic spectroscopy; real-time observation; single-frequency; stokes vectors; support vector machine; TDLAS; TDLAS technique; temperature compensation; thermal control; thermoelectric cooling; time division multiplexing differential modulation; Tm; trace gas detection; tunable diode laser; tunable laser absorption spectroscopy; tunable mid-infrared solid-state laser; two-photon femtosecond laser-induced fluorescence; two-tone frequency modulation spectroscopy; wavelength modulation; wavelength modulation spectroscopy; wavelength modulation spectroscopy (WMS)
• Online Access: Open Access: DOAB: description of the publication; Open Access: DOAB, download the publication

 Trace gas sensing technologies are widely used in many applications, such as environmental monitoring, life science, medical diagnostics, and planetary exploration. On the one hand, laser sources have developed greatly due to the rapid development of laser media and laser techniques in recent years. Some novel lasers such as solid-state, diode, and quantum cascade lasers have experienced significant progress. At present, laser wavelengths can cover the range from ultraviolet to terahertz, which could promote the development of laser gas sensing technologies significantly. On the other hand, some new gas sensing methods have appeared, such as photothermal spectroscopy and photoacoustic spectroscopy. Laser spectroscopy-based gas sensing techniques have the advantages of high sensitivity, non-invasiveness, and allowing in situ, real-time observation. Due to the rapid and recent developments in laser source as well as the great merits of laser spectroscopy-based gas sensing techniques, this book aims to provide an updated overview of the state-of-the-art laser gas sensing technologies.