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高功率、高能量中红外脉冲光纤激光源因其在生物医疗、材料加工、红外对抗等领域的重要应用前景,近年来受到国内外科研人员的广泛关注。2012年,日本京都大学Tokita等通过主动调Q方式使用掺铒氟化物光纤激光器输出了平均功率为12W的2.8μm脉冲激光;2015年,美国PolarOnyx公司Wan等利用类似方法实现了脉冲能量为201μJ的2.8μm脉冲激光,这是目前该波段光纤激光器的最高功率和能量水平。
Due to its important application prospects in the field of biomedicine, material processing and infrared countermeasure, high power and high energy mid-infrared pulsed fiber laser sources have drawn much attention from researchers at home and abroad in recent years. In 2012, Kyoto University of Japan, Tokita, et al. Used an erbium-doped fluoride fiber laser to output a 2.8-μm pulsed laser with an average power of 12W through an active Q-switching method. In 2015, PolarOnyx Co. of the United States used a similar method to achieve a pulse energy of 201μJ 2.8μm pulsed laser, which is currently the highest power and energy level for this band of fiber lasers.