High-entropy garnet crystal enables enhanced 2.8 μm mid-infrared laser performance

Recently, a research team from the Hefei Institutes of Physical Science of the Chinese Academy of Sciences successfully grew a high-entropy garnet-structured oxide crystal and achieved enhanced laser performance at the 2.8 μm wavelength band. By introducing a high-entropy design into a garnet crystal system, the team obtained a wide emission band near 2.8 μm and continuous-wave laser output with improved average power and beam quality, demonstrating the material's strong potential as a high-performance gain medium for mid-infrared ultrashort-pulse lasers.