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Recent advancements in transparent ceramics and crystal fibers for high power lasers

机译:用于大功率激光器的透明陶瓷和晶体纤维的最新进展

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In this paper, we present our recent progress in the development of rare-earth (Yb~(3+) or Ho~(3+)) doped LU_2O_3 and Y_2O_3 sesquioxides for high power solid state lasers. We have fabricated high quality transparent ceramics using nano-powders synthesized by a co-precipitation method. This was accomplished by developments in high purity powder synthesis and low temperature scalable sintering technology developed at NRL. The optical, spectral and morphological properties as well as the lasing performance from our highly transparent ceramics are presented. In the second part of the paper, we discuss our recent research effort in developing cladded-single crystal fibers for high power single frequency fiber lasers has the potential to significantly exceed the capabilities of existing silica fiber based lasers. Single crystal fiber cores with diameters as small as 35μm have been drawn using high purity rare earth doped ceramic or single crystal feed rods by the Laser Heated Pedestal Growth (LHPG) process. Our recent results on the development of suitable claddings on the crystal fiber core are discussed.
机译:在本文中,我们介绍了在高功率固态激光器中稀土(Yb〜(3+)或Ho〜(3+))掺杂的LU_2O_3和Y_2O_3倍半氧化物的研究进展。我们使用通过共沉淀法合成的纳米粉制备了高质量的透明陶瓷。这是通过NRL开发的高纯度粉末合成和低温可扩展烧结技术的发展而实现的。介绍了我们高度透明的陶瓷的光学,光谱和形态特性以及激光性能。在本文的第二部分中,我们讨论了我们最近在开发用于高功率单频光纤激光器的包层单晶光纤方面的研究成果,该潜力可能大大超过现有的基于石英光纤的激光器的能力。使用高纯度稀土掺杂陶瓷或单晶进料棒,通过激光加热基座生长(LHPG)工艺拉制了直径小至35μm的单晶纤维芯。讨论了我们最近在晶体纤芯上开发合适的包层的结果。

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