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Terahertz Birefringence in Zinc Oxide

Kim, Youngchan, Ahn, Jaewook, Kim, Bog G. and Yee, Dae-Su (2011) Terahertz Birefringence in Zinc Oxide Japanese Journal of Applied Physics, 50.

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Abstract

The birefringence of zinc oxide (ZnO) in the terahertz (THz) frequency range is measured using a parallel-polarization configuration THz time-domain spectrometer and compared with the result of an ab initio calculation. The measured birefringence of 0.180 at 1 THz shows good agreement with the calculated value of 0.170 from full phonon consideration, both of which are about 20 times larger than the birefringence in the visible range. It is found that the difference of the transverse optical and longitudinal optical (TO–LO) phonon splitting between the optical phonon branches (A1 and E1) predominantly contributes to the huge birefringence of ZnO in the THz frequency region.

Item Type: Article
Divisions : Faculty of Health and Medical Sciences > School of Biosciences and Medicine
Authors : Kim, Youngchan, Ahn, Jaewook, Kim, Bog G. and Yee, Dae-Su
Date : 7 March 2011
DOI : 10.1143/JJAP.50.030203
Depositing User : James Marshall
Date Deposited : 29 Jun 2020 15:56
Last Modified : 29 Jun 2020 15:56
URI: http://epubs.surrey.ac.uk/id/eprint/858094

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