关键词：激光；吸收；晶体；能量转移；环境监测
摘 要：Middle-infrared (mid-IR) laser sources are in great demand for a variety of applications including molecular spectroscopy, non-invasive medical diagnostics, laser medical scalpel that make use of the ability of the laser to tune in and out of the strong absorption band of liquid water, industrial process control, environmental monitoring, atmospheric sensing and free space communication, oil prospecting, and numerous defense related applications such as infrared aircraft countermeasures, monitoring of munitions disposal, stand-off detection of explosion hazards, eye safe seekers for smart munitions and cruise missiles, covert communications systems, and injection seeding of high power chemical (e.g. HF) lasers.