Terahertz Birefringence in Zinc Oxide

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The birefringence of zinc oxide (ZnO) in the terahertz (THz) frequency range is measured using a parallel- polarization configuration THz timedomain 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 (A(1) and E-1) predominantly contributes to the huge birefringence of ZnO in the THz frequency region. (C)2011 The Japan Society of Applied Physics
Publisher
JAPAN SOC APPLIED PHYSICS
Issue Date
2011-03
Language
English
Article Type
Article
Keywords

CRYSTAL CODE; ZNO; IMPLEMENTATION; TECHNOLOGY; RESOLUTION

Citation

JAPANESE JOURNAL OF APPLIED PHYSICS, v.50, no.3

ISSN
0021-4922
DOI
10.1143/JJAP.50.030203
URI
http://hdl.handle.net/10203/93445
Appears in Collection
PH-Journal Papers(저널논문)
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