中国物理B ›› 2001, Vol. 10 ›› Issue (9): 836-839.doi: 10.1088/1009-1963/10/9/312

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INFLUENCES OF NONLINEAR INTERACTIONS ON POLARITONS

罗莹1, 马本堃1, 牛家胜2   

  1. (1)Department of Physics, Beijing Normal University, Beijing 100875, China; (2)Institute of Low Energy Nuclear Physics, Beijing Normal University, Beijing 100875, China; Department of Physics, Beijing Normal University, Beijing 100875, China
  • 收稿日期:2000-11-30 修回日期:2001-04-17 出版日期:2001-09-15 发布日期:2005-06-12

INFLUENCES OF NONLINEAR INTERACTIONS ON POLARITONS

Niu Jia-sheng (牛家胜)ab, Luo Ying (罗莹)b, Ma Ben-kun (马本堃)b    

  1. a Institute of Low Energy Nuclear Physics, Beijing Normal University, Beijing 100875, China; b Department of Physics, Beijing Normal University, Beijing 100875, China
  • Received:2000-11-30 Revised:2001-04-17 Online:2001-09-15 Published:2005-06-12

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摘要： In this paper, we have analysed theoretically the polarization and dielectric constant generated by the nonlinear interactions between ions in ionic crystals. The spectrum of polaritons (coupling modes of photons and optical phonons) under nonlinear interactions has been developed. A new branch of dispersion relations has emerged in the original frequency gap between ωTO and ωLO.

Abstract: In this paper, we have analysed theoretically the polarization and dielectric constant generated by the nonlinear interactions between ions in ionic crystals. The spectrum of polaritons (coupling modes of photons and optical phonons) under nonlinear interactions has been developed. A new branch of dispersion relations has emerged in the original frequency gap between $\omega$TO and $\omega$LO.

Key words: polariton, self-energy correction

中图分类号:  (Polaritons (including photon-phonon and photon-magnon interactions))

  • 71.36.+c
77.22.Ch (Permittivity (dielectric function))