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Terahertz Reflection Response Measurement Using A Phonon Polariton Wave

机译:用声子极化波测量太赫兹反射响应

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摘要

We developed a new technique for the measurement of terahertz reflection responses utilizing a propagating phonon polariton wave. Frequency tunable phonon polariton waves were generated by the recently developed continuously variable spatial frequency transient grating method [K. Katayama, H. Inoue, H. Sugiya, Q. Shen, T. Taro, and K. A. Nelson, Appl. Phys. Lett. 92, 031906 (2008)]. The phonon polariton wave traveled in a ferroelectric crystal in an in-plane direction with an inclined angle of 26°, and the wave reflected at the crystal edge where a sample was positioned. The reflected polariton wave was detected by the same method as that used for the generation of the polariton waves. By comparing the reflection intensities in the presence and absence of the sample, reflectivity of the polariton wave was calculated, and the refractive index and absorption in the terahertz region were obtained.
机译:我们开发了一种利用传播的声子极化子波来测量太赫兹反射响应的新技术。频率可调声子极化子波是通过最近开发的连续可变空间频率瞬变光栅方法产生的[K。 Katayama,H.Inoue,H.Sugiya,Q.Shen,T.Taro和K.A.Nelson,应用物理来吧92,031906(2008)]。声子极化波在铁电晶体中沿平面内方向以26°的倾斜角传播,并且该波在放置样本的晶体边缘反射。通过与产生极化波相同的方法检测反射的极化波。通过比较样品存在和不存在下的反射强度,计算了极化子波的反射率,并获得了太赫兹区域的折射率和吸收率。

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  • 来源
    《Journal of Applied Physics》 |2009年第5期|649-652|共4页
  • 作者单位

    Department of Applied Chemistry, Faculty of Science and Technology, Chuo University, 1-13-27 Kasuga,rnBunkyo, Tokyo 112-8551, Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
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