A collaborative research project has demonstrated a broadband mid-infrared (MIR) source designed to facilitate a simplified environmental monitoring system with potential value in industrial and medical applications. The source generates a highly stable broadband beam in the MIR wavelength range between 2.5 and 3.7 μm that, in testing, maintained its full brightness due to a very high beam quality. The light source features a simple configuration and is a necessary component of a MIR fiber optic sensor. 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