A simple sensor for simultaneous measurements of OH, H2O, and temperature in combustion environments using a single tunable diode laser near 1.477 μm

Information about quantitative OH concentrations and temperature during the combustion process is important for the development of combustion kinetics and understanding of combustion chemistry. In this work, we perform simultaneous measurements of the averaged temperature, H2O concentration, and OH concentration using a single telecommunication-fiber-coupled tunable diode laser near 1.477 μm. A 1f-normalized wavelength modulation spectroscopy...