强太赫兹场对固体偶次谐波产生的超快控制

2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Pub Date : 2018-09-01 DOI:10.1109/IRMMW-THZ.2018.8510220

H. Huang, Liwei Song, Nicolas Tancoene-Deiean, N. Klemke, Á. Rubio, F. Kärtner, Oliver D. Miicke

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引用次数: 1

摘要

非微扰偶阶谐波，物理上禁止在中心对称晶体，观察到从绝缘体(金刚石)和半导体(硅)样品由红外脉冲驱动，当另外一个强太赫兹电场施加到固体。高次谐波谱与太赫兹电场的时间分布的时间分辨研究表明瞬态太赫兹电场诱导的对称性降低。我们还研究了谐波的产率取决于线性红外和太赫兹偏振相对于晶体轴的角度。这项工作可能为固体中基于太赫兹的对称控制铺平道路，并对千兆赫电子学产生重要影响。

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Ultrafast Control of Even-Order Harmonic Generation from Solids by an Intense Terahertz Field

Nonperturbative even-order harmonics, physically forbidden in centrosymmetric crystals, are observed from both insulator (diamond) and semiconductor (silicon) samples driven by IR pulses, when in addition an intense THz electric field is applied to the solid. The time-resolved study of the high-harmonic spectra with the temporal profile of the THz electric field suggests a transient THz-field-induced symmetry reduction. We also investigate the harmonics' yields depending on the angles of the linear IR and THz polarizations with respect to the crystal axes. This work might pave the way for THz-based symmetry control in solids with important ramifications for petahertz electronics.

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2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)

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