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3 μm波段稀土離子激活的氟化物激光晶體研究進展

Research Progress of Fluoride Laser Crystals Activated by 3 μm Rare Earth Ions

  • 摘要: 中紅外激光在衛星遙感👁‍🗨📅、軍事對抗、分子監測、激光醫療Ⓜ️、基礎科學等領域具有非常重要的應用價值.總結了以LiLuF4👨🏽‍🏭、PbF2為基質, 稀土Ho3+和Dy3+為激活離子的2.7~3.1 μm波段中紅外激光晶體在生長、物化、光譜及激光性能等方面的研究進展.著重分析了激活離子Ho3+和Dy3+的濃度效應、共摻敏化離子Yb3+的敏化機製、共摻退激活離子Pr3+的抑製自終止效應機理; 同時計算了相關的能量傳遞效率, 揭示其能量傳遞機製.此外, 提出中紅外激光晶體的幾個主要研究方向:提高晶體發光效率, 開拓新的特征輸出波長, 探索新型低聲子能量的基質晶體.

     

    Abstract: Mid-infrared waveband lasers have demonstrated important applications in the fields of satellite remote sensing, military confrontation, molecule monitoring, laser medicine and basic scientific researches.We reviewed the research development of crystal growth, physicochemical, spectrum and laser properties of mid-infrared laser crystals at the wavelength range of 2.7-3.1 μm which take Ho3+, Dy3+ as matrix and LiLuF4, PbF2 as activated ions.We focused on the analysis of the concentration effect of activated ions Ho3+ and Dy3+, the sensitization mechanism of the co-dopant sensitized ions Yb3+, and the mechanism of the deactivated ions Pr3+ on the inhibition of self-termination effect. These results show that the main development direction of the 2.7-3.1 μm mid-infrared laser crystals includes the improvement of luminous efficiency, the exploitation of new characteristic wavelength and the exploitation of novel low phonon energy crystals.

     

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