TY - BOOK ID - 136503231 TI - Optical Gas Sensing: Media, Mechanisms and Applications AU - Abramski, Krzysztof M. AU - Jaworski, Piotr PY - 2022 PB - Basel MDPI - Multidisciplinary Digital Publishing Institute DB - UniCat KW - laser flow meter KW - Pitot tube KW - flow speed KW - time of flight KW - dilution method KW - flow simulation KW - flow turbulence KW - gas sensing applications KW - MEMS KW - gas sensor KW - photoacoustics KW - cantilever KW - capacitive detection KW - analytic model KW - infrared imaging KW - multispectral and hyperspectral imaging KW - air pollution monitoring KW - remote sensing and sensors KW - spectroscopy KW - fourier transform KW - image processing KW - laser gas analyzer KW - flux measurement KW - eddy covariance method KW - derivative absorption spectroscopy KW - gas sensors KW - antiresonant hollow core fibers KW - laser spectroscopy KW - wavelength modulation spectroscopy KW - tunable diode laser absorption spectroscopy KW - photothermal spectroscopy KW - photoacoustic spectroscopy KW - fiber gas sensors KW - mid-infrared KW - quantum cascade detector KW - high-speed operation KW - heterodyne detection KW - high-resolution spectroscopy KW - isotopic ratio KW - frequency comb KW - Vernier spectroscopy KW - refractometry KW - pressure KW - short-term performance KW - Fabry–Perot cavity KW - gas modulation KW - modulation techniques KW - metrology KW - integrated sensors KW - waveguides KW - absorption spectroscopy KW - Raman spectroscopy KW - gas sensing KW - femtosecond laser micromachining KW - microchannel fabrication KW - microstructured fibers KW - photoacoustic KW - pressure transducer KW - wafer-level KW - CO2 KW - combined NIR/MIR laser absorption KW - laser multiplexing in a mid-IR single-mode fiber KW - simultaneous multispecies (CO, CO2, H2O) in situ measurements UR - https://www.unicat.be/uniCat?func=search&query=sysid:136503231 AB - Optical gas sensing is one of the fastest developing research areas in laser spectroscopy. Continuous development of new coherent light sources operating especially in the Mid-IR spectral band (QCL—Quantum Cascade Lasers, ICL—Interband Cascade Lasers, OPO—Optical Parametric Oscillator, DFG—Difference Frequency Generation, optical frequency combs, etc.) stimulates new, sophisticated methods and technological solutions in this area. The development of clever techniques in gas detection based on new mechanisms of sensing (photoacoustic, photothermal, dispersion, etc.) supported by advanced applied electronics and huge progress in signal processing allows us to introduce more sensitive, broader-band and miniaturized optical sensors. Additionally, the substantial development of fast and sensitive photodetectors in MIR and FIR is of great support to progress in gas sensing. Recent material and technological progress in the development of hollow-core optical fibers allowing low-loss transmission of light in both Near- and Mid-IR has opened a new route for obtaining the low-volume, long optical paths that are so strongly required in laser-based gas sensors, leading to the development of a novel branch of laser-based gas detectors. This Special Issue summarizes the most recent progress in the development of optical sensors utilizing novel materials and laser-based gas sensing techniques. ER -