中国激光, 2013, 40 (6): 0606003, 网络出版: 2013-05-14
氟化镧掺钕纳米激光材料的制备及光学性能
Synthesis and Optical Properties of Neodymium-Doped Lanthanum Fluoride Nano-Laser Materials
材料 流体激光 纳米颗粒 高分散浓度 高透射率 低猝灭率 materials liquid laser nanoparticle high dispersion concentration high transmittance low quenching rate
摘要
利用水热法制备了新型氟化镧掺钕(LaF3Nd)纳米材料,其结构为六方晶型,纳米尺寸在25 nm左右;利用超声波分散技术,制备成了一系列具有不同稀土分散浓度的纳米分散液。其钕离子浓度可达到1×1020 cm-3。可见近红外透射光谱表明,对于5 mm光程的纳米分散液,其在1053 nm处的透射率大于85%,与掺钕透明陶瓷的透射率相当。荧光寿命测试结果显示,该稀土纳米材料(La0.95Nd0.05F3)在分散液中的寿命值为200 μs,与粉末相比,降低了3.8%,表明这种低荧光猝灭率、高离子浓度、高透射率的纳米分散液将是一种可用于高重复率、高功率、超短脉冲的流体激光工作物质。
Abstract
A new type of neodymium-doped lanthanum fluoride (LaF3Nd) nanoparticles are synthesized by hydrothermal method. It exhibits hexagonal structure and a size of about 25 nm. A series of different concentrations of LaF3Nd nanoparticles dispersion are prepared by ultrasonic technology. The visible-near-infrared spectra show that the dispersion with the optical path of 5 mm and neodymium ion concentration of 1×1020 cm-3 shows high transmittance of 85% at 1053 nm. The lifetime of the La0.95Nd0.05F3 nanoparticles dispersion is 200 μs, compared with that of the powder, it is reduced by 3.8%. These results indicate that the LaF3Nd nanoparticles dispersion with low fluorescence quenching rate, high ion concentration and high transmittance is a kind of promising material used for high repetition rate, high-power and ultra short pulse liquid laser.
崔晓霞, 高飞, 候超奇, 郭海涛, 王中跃, 韦玮, 彭波. 氟化镧掺钕纳米激光材料的制备及光学性能[J]. 中国激光, 2013, 40(6): 0606003. Cui Xiaoxia, Gao Fei, Hou Chaoqi, Guo Haitao, Wang Zhongyue, Wei Wei, Peng Bo. Synthesis and Optical Properties of Neodymium-Doped Lanthanum Fluoride Nano-Laser Materials[J]. Chinese Journal of Lasers, 2013, 40(6): 0606003.