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中红外激光覆盖了许多分子吸收特征谱线,在军事遥感测距、环境监测、大气通信、生物工程、医疗、加工等领域有着重要的应用价值和广阔的发展前景。利用稀土掺杂硫系玻璃光纤制备光纤激光器是直接获得3~5μm波段中红外激光的有效途径。综述了国内外稀土掺杂硫系光纤的最新研究进展以及硫系光纤掺杂的主要问题,讨论了中红外硫系玻璃光纤发展中存在的难点,对中红外稀土掺杂硫系玻璃光纤的研究方向和发展前景进行了展望。
Mid-infrared laser covers many molecular absorption characteristic lines and has important application value and broad development prospects in such fields as military remote sensing and distance measurement, environmental monitoring, atmospheric communication, biological engineering, medical treatment and processing. The preparation of fiber lasers by rare-earth doped chalcogenide glass fibers is an effective way to directly obtain mid-infrared laser in 3 ~ 5μm band. The recent research progress and the main problems of rare earth doping sulfur based fibers are reviewed. The difficulties in the development of middle infrared sulfur based glass fibers are discussed. The research on the rare earth doping sulfur glass fibers Direction and development prospects.