https://doi.org/10.3390/chemosensors11010030 ” When detecting the concentration of chemical gases using optical spectroscopy sensors, the mutual absorption process between incident laser light and gas absorption species
https://doi.org/10.3390/chemosensors11010030 “Figure 2 shows the schematic diagram of the ECQCL and QCTF detector-based gas detection system. The laser source that we used is a pulsed room-temperature
https://doi.org/10.3390/s23020622 ” A variety of techniques have been developed and used for temperature measurements in combustion systems [1,2,3,4]. There are non-optical (thermocouples) and optical diagnostics
https://doi.org/10.3390/s23020622 ” 3.1. Set-Up The experimental set-up is presented in Figure 1. Figure 1. Experimental set-up. MPRR—micro-prism retroreflector; DL1, DL2—diode lasers; TC, IC—temperature and current controllers, respectively; sm—single
https://doi.org/10.3390/s22176707 “TDLAS (tunable diode laser absorption spectroscopy) is an important gas analysis method that can be employed to obtain characteristic parameters non-invasively by the infrared
https://doi.org/10.3390/s22155729 ” 2. TDLAS Diagnostics for NO and NO2 The theory of laser absorption spectroscopy is well understood and has been published previously [33,34,35,36]. The
https://doi.org/10.3390/s22166095 ” 2. Selection of H2O Absorption Lines The appropriate selection of spectral absorption lines is essential for temperature measurement in TDLAS [41]. H2O is
https://doi.org/10.3390/mi12121492 “A novel compact laser absorption spectrometer is developed for colorimetric detection. We demonstrate the realization of the system as well as example measurements of
https://directory.doabooks.org/handle/20.500.12854/59989 “Trace gas sensing technologies are widely used in many applications, such as environmental monitoring, life science, medical diagnostics, and planetary exploration. On the one
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