Influences of nonlinear interactions of polaritons in uniaxial crystals
Niu Jia-Sheng (牛家胜)ab, Luo Ying (罗莹)b, Ma Ben-Kun (马本堃)b
a Institute of Low Energy Nuclear Physics, Beijing Normal University, Beijing 100875, China; b Department of Physics, Beijing Normal University, Beijing 100875, China
Abstract We have analysed theoretically the polarization and dielectric constant of uniaxial ionic crystals, including the effect of the nonlinear interactions between ions. The spectrum of polaritons (coupling modes of photons and optical phonons) under nonlinear interactions was developed. A new branch of dispersion relations emerges in the original frequency gap.
Received: 20 July 2001
Revised: 13 September 2001
Accepted manuscript online:
PACS:
71.36.+c
(Polaritons (including photon-phonon and photon-magnon interactions))
Niu Jia-Sheng (牛家胜), Luo Ying (罗莹), Ma Ben-Kun (马本堃) Influences of nonlinear interactions of polaritons in uniaxial crystals 2002 Chinese Physics 11 144
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