Mid-infrared laser technology is a specialized research field and engineering discipline focused on the principles, design, development, and application of coherent light sources and associated optical systems operating within the mid-infrared spectral range (typically 2 to 10 µm). This domain is of significant academic and practical importance due to the prevalence of fundamental molecular vibrational absorption bands in this region, enabling critical advancements in high-sensitivity spectroscopy, trace gas detection, medical diagnostics, and various industrial and defense applications.