人眼安全1550 nm 波段激光位于良好的大气传输窗口,以及室温工作的Ge和InGaAs探测器的探测灵敏区,可被广泛应用于激光雷达、激光测距和遥感测量等领域。利用激光二极管泵浦Er 3+掺杂晶体是一种直接输出1550 nm 波段紧凑型全固态激光的有效方法。本文主要综述了近年来采用Er 3+掺杂晶体作为增益介质的1550 nm波段全固态激光的研究进展,并对该波段激光的进一步发展进行了展望。

Eye-safe 1550-nm laser is located in an excellent atmospheric transmission window and detection-sensitive region of Ge and InGaAs photodiodes operating at room temperature. Therefore, such laser can be widely used in many fields, including lidar, laser ranging, and remote sensing. Diode-pumped Er ³⁺-doped crystals are considered as an effective method for directly obtaining the compact 1550-nm all-solid-state laser. In this paper, recent research progress in 1550-nm all-solid-state lasers based on Er ³⁺-doped crystals is reviewed. Moreover, further development of 1550-nm all-solid-state lasers is discussed.