摘要
对Nd:YAG激光陶瓷材料的激光性能进行表征与评估,可为激光陶瓷材料在不同领域中的应用和开发提供依据。采用相应的激光泵浦模块,对不同掺杂浓度的Nd:YAG激光陶瓷材料的激光输出特性表征与评估,探究掺杂浓度与性能之间的内在联系,对激光陶瓷材料激光连续、准连续、调Q以及频率变换进行激光输出特性表征评估。随着Nd:YAG激光陶瓷材料中Nd离子掺杂浓度的增加,1064 nm谱线的荧光谱宽显著变宽,同时荧光寿命逐渐缩短,当掺杂浓度从0.1 at.%增至6.0 at.%时,荧光寿命从261μs降至54μs,表明高掺杂浓度下荧光强度衰减加快;总损耗系数随掺杂浓度的增加而增大,其中吸收损耗系数在高掺杂浓度下尤为显著,例如掺杂浓度为0.1 at.%时总损耗系数为0.015 cm^(-1),6.0 at.%时总损耗系数高达0.919 cm^(-1),远高于低掺杂浓度样品;当掺杂浓度为0.5 at.%、0.8 at.%和1.0 at.%时,激光陶瓷材料表现出最佳性能,光光效率均高于20%,其中,0.8 at.%掺杂浓度的样品输出功率达12.9 W,光光效率为36.7%,显示出优异的激光输出特性。在连续运转条件下,掺杂浓度为1.0 at.%的Nd:YAG陶瓷棒与相同掺杂浓度的晶体棒相比,陶瓷棒激光输出功率为25.0 W,晶体棒为27.0 W,光光效率分别为36.2%和39.2%,.表明Nd:YAG激光陶瓷材料与Nd:YAG晶体两者最佳激光性能基本一致,激光陶瓷材料具有很好的调Q运转特性以及非线性频率变换性能。该研究系统探讨了不同掺杂浓度Nd:YAG陶瓷的激光性能,并揭示了掺杂浓度对激光输出特性的影响规律,为高性能Nd:YAG陶瓷激光材料的优化设计和实际应用提供了重要依据。
Objective This article characterizes and evaluates the laser properties of Nd:YAG laser ceramic materials,which can provide a basis for the application and development of laser ceramic materials in different fields.Methods This article uses corresponding laser pump modules to characterize and evaluate the laser output characteristics of Nd:YAG laser ceramic materials with different doping concentrations,explore the intrinsic relationship between doping concentration and performance,and characterize and evaluate the laser output characteristics of laser ceramic materials for continuous,quasi continuous,Q-switched,and frequency conversion.ResultsandDiscussions With the increase of Nd ion doping concentration in Nd:YAG laser ceramic materials,the fluorescence spectrum width of the 1064 nm line significantly widens,while the fluorescence lifetime gradually shortens.When the doping concentration increases from 0.1 at.%to 6.0 at.%,the fluorescence lifetime decreases from 261μs to 54μs,indicating that the fluorescence intensity attenuation accelerates under high doping concentration;The total loss coefficient increases with the increase of doping concentration,among which the absorption loss coefficient is particularly significant at high doping concentration.For example,when the doping concentration is 0.1 at.%,the total loss coefficient is 0.015 cm^(-1),and when the doping concentration is 6.0 at.%,the total loss coefficient is as high as 0.919 cm^(-1),which is much higher than that of low doping concentration samples.When the doping concentration is 0.5 at.%,0.8 at.%,and 1.0 at.%,the laser ceramic material exhibits the best performance,with optical-to-optical conversion efficiency than 20%.Among them,the sample with a doping concentration of 0.8 at.%has an output power of 12.9 W and an optical-to-optical conversion efficiency of 36.7%,demonstrating excellent laser output characteristics.Under continuous operation conditions,the Nd:YAG ceramic rod with a doping concentration of 1.0 at.%has a laser output power of 25.0 W and a crystal rod with the same doping concentration.The optical-to-optical conversion efficiency of the ceramic rod is 36.2%and the crystal rod is 27.0 W,respectively,indicating that the optimal laser performance of the Nd:YAG laser ceramic material and the Nd:YAG crystal are basically the same laser ceramic materials have excellent Q-switching operation characteristics and nonlinear frequency conversion performance.Conclusions This study systematically investigated the laser performance of Nd:YAG ceramics with different doping concentrations and revealed the influence of doping concentration on laser output characteristics,providing important basis for the optimization design and practical application of high-performance Nd:YAG ceramic laser materials.
作者
周思博
申玉
温雅
薄勇
彭钦军
ZHOU Sibo;SHEN Yu;WEN Ya;BO Yong;PENG Qinjun(Key Laboratory oF Solid State Laser,Institute of Physical and Chemical Technology,Chinese Academy of Sciences,Beijing 100190,China;University of Chinese Academy of Sciences,Beijing 100049,China)
出处
《红外与激光工程》
北大核心
2025年第10期102-112,共11页
Infrared and Laser Engineering
基金
国家重点研发计划项目(2023YFB3812000)
国家自然科学基金项目(62205349)
国家高层次人才科学技术支持计划项目(SQ2022RA24910010)。
