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Laser-based in-situ measurements of furnace gases show promise for improving energy efficiency and pollutant emissions for steelmaking furnaces such as electric arc furnaces (EAFs). A near-infrared (IR) tunable diode laser (1.56 µm) has performed in-situ off-gas analysis of gas temperature and carbon monoxide and water concentrations in the exhaust gas region above a laboratory burner, with response...