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Epitaxial Nd:YLF linear waveguide laser

机译:外延Nd:YLF线性波导激光器

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We report laser operation in planar and linear Nd:YLF waveguide structures grown by liquid-phase epitaxy (LPE). We could reduce the relatively high threshold of 115-mW incident pump power observed for the planar waveguide to 8 mW in a ridge-type structure that we obtained by mechanical polishing and subsequent growth of a cladding layer. Substantial improvements seem possible with reduction of the losses caused by imperfect end-face reflection and scattering, as well as by use of techniques capable of producing smaller structures than the 40-mu m-wide triangular ridge cross section that was obtained with polishing. Since the LPE technique is applicable to other activator ions as well, it might offer a route to development of low-threshold upconversion lasers. (C) 1997 Optical Society of America.
机译:我们报告了通过液相外延(LPE)生长的平面和线性Nd:YLF波导结构中的激光操作。在通过机械抛光和随后生长覆层获得的脊型结构中,我们可以将平面波导中观察到的115 mW入射泵浦功率的较高阈值降低到8 mW。减少由不完善的端面反射和散射引起的损耗,以及使用能够产生比通过抛光获得的40微米宽的三角形脊形横截面更小的结构的技术,似乎可以进行重大改进。由于LPE技术也适用于其他活化剂离子,因此它可能为开发低阈值上转换激光器提供了一条途径。 (C)1997年美国眼镜学会。

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