arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1709.09153physics.optics
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三维半导体波导中高次谐波的放大

Amplification of high harmonics in 3D semiconductor waveguides

Dominik Franz, Rana Nicolas, Willem Boutu, Liping Shi, Quentin Ripault, Maria Kholodtsova, Bianca Iwan, Ugaitz Elu Etxano, Milutin Kovacev, Jens Biegert, Hamed Merdji

摘要:

固态器件中非线性过程的纳米级放大在纳米电子学、纳米医学或高能量转换等方面开辟了新的应用。在纳米尺度上耦合几纳焦耳激光能量的强场物理演示。我们报告的纳米结构的半导体中使用纳米级放大的中红外激光,而不是使用大型激光放大器系统的高次谐波产生的增强。场放大是通过纳米结构半导体3D波导中的光限制来实现的。高谐波纳米转换器由氧化锌纳米锥阵列组成。它们表现出较大的放大体积,比以前报道的大6个数量级,并避免在金属等离子体结构中观察到的熔化。通过在每个纳米锥的入口处耦合5-10纳焦耳的3.2 μm高重复率OPCPA激光,观察到高次谐波的放大。谐波放大(因子30)取决于激光能量输入、波长和纳米锥几何形状。

英文摘要:

Nanoscale amplification of non-linear processes in solid-state devices opens novel applications in nano-electronics, nano-medicine or high energy conversion for example. Coupling few nano-joules laser energy at a nanometer scale for strong field physics is demonstrated. We report enhancement of high harmonic generation in nano-structured semiconductors using nanoscale amplification of a mid-infrared laser in the sample rather than using large laser amplifier systems. Field amplification is achieved through light confinement in nano-structured semiconductor 3D waveguides. The high harmonic nano-converter consists of an array of zinc-oxide nanocones. They exhibit a large amplification volume, 6 orders of magnitude larger than previously reported and avoid melting observed in metallic plasmonic structures. The amplification of high harmonics is observed by coupling only 5-10 nano-joules of a 3.2 μm high repetition-rate OPCPA laser at the entrance of each nanocone. Harmonic amplification (factor 30) depends on the laser energy input, wavelength and nanocone geometry.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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