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Investigation of THz birefringence measurement and calculation in Al_(2)O_(3) and LiNbO_(3)

机译:Al_(2)O_(3)和LiNbO_(3)中的THz双折射测量与计算研究

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摘要

Based on the polarization-sensitive terahertz time-domain spectroscopy, we measured the birefringence for Al_(2)O_(3) and LiNbO_(3) single crystals, which correspond to trigonal structures that have an uniaxial birefringence, in the THz frequency range of 0.25 to 1.4 THz. For more comprehensive understanding of the THz birefringence, the measured birefringence is compared with the results of ab initio calculations. The measured birefringence shows good agreement with the calculated value.
机译:基于偏振敏感的太赫兹时域光谱,我们测量了Al_(2)O_(3)和LiNbO_(3)单晶的双折射,它们与THz频率范围内具有单轴双折射的三角结构相对应。 0.25至1.4 THz为了更全面地了解THz双折射,将测量的双折射与从头算的结果进行比较。测得的双折射与计算值显示出良好的一致性。

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