TITLE

Optical constants of ice Ih crystal at terahertz frequencies

AUTHOR(S)
Zhang, Chun; Lee, Kwang-Su; Zhang, X.-C.; Wei, Xing; Shen, Y. R.
PUB. DATE
July 2001
SOURCE
Applied Physics Letters;7/23/2001, Vol. 79 Issue 4
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Terahertz time-domain spectroscopy was used to measure the refractive indices of Ih crystalline ice in the frequency range of 0.25–1.0 THz. With increasing frequency, the real part, n[sup ′], of the refractive index increases from 1.787 to 1.793 at 243 K, and the imaginary part, n[sup ″], increases from 0.005 to 0.020. The temperature dependence of n[sup ′] is less than 0.01%/K and that of n[sup ″] is ∼1%/K. Our results connect smoothly to the data of Matsuoka and co-workers [T. Matsuoka, S. Fujita, and S. Mae, J. Appl. Phys. 80, 5884 (1996)] in the microwave range and the data in the far IR range, and can be well described by the existing theoretical models. © 2001 American Institute of Physics.
ACCESSION #
4825997

 

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