Crystal Planar Waveguides, a Power Scaling Architecture for Low-Gain Transitions
Crystal Planar Waveguides, a Power Scaling Architecture for Low-Gain Transitions
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DOI：
10.1109/jstqe.2014.2341916
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发表时间：
2015
影响因子：
4.9
通讯作者：
J. Mackenzie;J. Szela;S. Beecher;Tina L. Parsonage;R. Eason;D. Shepherd
中科院分区：
文献类型：
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作者：
J. Mackenzie;J. Szela;S. Beecher;Tina L. Parsonage;R. Eason;D. Shepherd
在本文中，我们提出了潜在的优势，使晶体平面波导（PW）的功率缩放困难或“弱”激光跃迁的关键成分，特别是那些极具挑战性的操作在其他增益介质配置。平面波导架构示出，使低增益和/或准四电平过渡，遭受再吸收损失的有效的激光器操作。本文报道了实现这种情况的典型结构，例如，Nd：YAG双包层平面波导激光器（PWL）在1.8 μm处输出功率为1.4W，而类似的高掺杂Er：YAG PWL在2.7 μm处输出功率为0.5W。还首次提出了脉冲激光沉积制备的三氧化二钇PWS的新激光性能水平，Yb：Y2 O3 PWL获得>1 W。目前的性能和未来的前景进行了讨论，这种激光器架构。
In this paper, we present the underlying advantages that make the crystalline planar waveguide (PW) the key ingredient in power-scaling difficult or “weak” laser transitions, especially those which are extremely challenging to operate in other gain medium configurations. The planar waveguide architecture is shown to enable efficient laser operation of low-gain and/or quasi-four-level transitions that suffer reabsorption losses. Exemplar configurations are reported to make this case, for example, 1.4 W at 1.8 μm from a Nd:YAG double-clad planar waveguide laser (PWL), in addition to 0.5 W at 2.7 μm from a similar highly doped Er:YAG PWL. New laser performance levels from sesquioxide PWs fabricated by pulsed laser deposition are also presented for the first time, with >1 W obtained from a Yb:Y2O3 PWL. Current performance and future prospects are discussed for this laser architecture.