中国物理B ›› 2015, Vol. 24 ›› Issue (3): 34205-034205.doi: 10.1088/1674-1056/24/3/034205

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

First-principles study on linear and nonlinear optical properties of ZnGeP2

肖瑞春a b, 吴海信a, 倪友保a, 王振友a, 黄昌保a b, 程旭东a b   

  1. a Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China;
    b University of Chinese Academy of Sciences, Beijing 100049, China
  • 收稿日期:2014-07-23 修回日期:2014-10-30 出版日期:2015-03-05 发布日期:2015-03-05
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant No. 51202250) and the Knowledge Innovation Program of the Chinese Academy of Sciences (Grant No. 13J131211).

First-principles study on linear and nonlinear optical properties of ZnGeP2

Xiao Rui-Chun (肖瑞春)a b, Wu Hai-Xin (吴海信)a, Ni You-Bao (倪友保)a, Wang Zhen-You (王振友)a, Huang Chang-Bao (黄昌保)a b, Cheng Xu-Dong (程旭东)a b   

  1. a Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China;
    b University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2014-07-23 Revised:2014-10-30 Online:2015-03-05 Published:2015-03-05
  • Contact: Wu Hai-Xin E-mail:hxwu@ircrystal.com
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant No. 51202250) and the Knowledge Innovation Program of the Chinese Academy of Sciences (Grant No. 13J131211).

摘要:

The study of the linear and nonlinear optical properties of ZnGeP2 based on density functional theory has been carried out. In order to get a more physical picture in the infrared region, terms which are considered as the phonon effect were added to the calculated refractive dispersion curves. The phonon-corrected calculation curves show excellent agreement with experimental refractive indexes, which gives a better comprehension of the linear optical proprieties in the transparent region. The static nonlinear optical susceptibility was investigated using approaches based on the “sum over states” and the 2n+1 theorem methods. Both of the results of these two methods reasonably coincided with the experimental results.

关键词: ZnGeP2, phonon effect, 2n+1 theorem, “sum over state&rdquo, method

Abstract:

The study of the linear and nonlinear optical properties of ZnGeP2 based on density functional theory has been carried out. In order to get a more physical picture in the infrared region, terms which are considered as the phonon effect were added to the calculated refractive dispersion curves. The phonon-corrected calculation curves show excellent agreement with experimental refractive indexes, which gives a better comprehension of the linear optical proprieties in the transparent region. The static nonlinear optical susceptibility was investigated using approaches based on the “sum over states” and the 2n+1 theorem methods. Both of the results of these two methods reasonably coincided with the experimental results.

Key words: ZnGeP2, phonon effect, 2n+1 theorem, “sum over state&rdquo, method

中图分类号:  (Optical properties of bulk materials and thin films)

  • 78.20.-e
42.65.-k (Nonlinear optics)