Longitudinally polarized single-cycle terahertz pulses generated with high electric field strengths
Longitudinally polarized single-cycle terahertz pulses generated with high electric field strengths
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DOI：
10.1063/1.4953024
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发表时间：
2016-05-30
影响因子：
4
通讯作者：
Jamison, S. P.
中科院分区：
文献类型：
--
作者：
Cliffe, M. J.;Graham, D. M.;Jamison, S. P.
我们证明了单周期纵向偏振太赫兹脉冲的产生与超过11 kV/cm的场振幅使用两个线偏振太赫兹光束的干涉复合。利用光整流技术在一对匹配的掺氧化镁的化学计量比Li_2O_3（MgO：SLN）晶体中产生了高场强的横向极化脉冲，该晶体具有χ（2）（333）取向的反转。chi（（2））（333）中的不连续性在横向场中产生极性翻转;在远场中测量了由于横向场不连续性而产生的纵向场。测量的纵向偏振太赫兹辐射的空间和时间分布与横向不连续性的传播是一致的。(c)2016年作者。
We demonstrate the generation of single-cycle longitudinally polarized terahertz pulses with field amplitudes in excess of 11 kV/cm using the interferometric recombination of two linearly polarized terahertz beams. High field strength transversely polarized pulses were generated by optical rectification in a matched pair of magnesium-oxide doped stoichiometric lithium niobate (MgO:SLN) crystals with a reversal in the chi((2))(333) orientation. The discontinuity in chi((2))(333) produces a polarity flip in the transverse field; the longitudinal field produced as a consequence of the transverse field discontinuity was measured in the far-field. Both the spatial and temporal profiles of the measured longitudinally polarized terahertz radiation were consistent with the propagation of the transverse discontinuity. (c) 2016 Author(s).