Control of the hyperbolic dispersion of dielectrics by an ultrashort laser pulse

Xiaoqin Zhang, Feng Wang, Fengshou Zhang, Yugui Yao

科研成果: 期刊稿件文章同行评审

8 引用 (Scopus)

摘要

An idea of controlling hyperbolic dispersion of dielectric materials by an ultrashort laser pulse is proposed. Taking the diamond as a concrete example and using time-dependent density functional theory calculations, we show that the permittivity tensor of the material can be effectively tuned by an ultrashort laser pulse, serving as a transient hyperbolic medium with wide working frequency window. With easily tunable laser parameters, the material can even be switched by reversal of both elliptic and hyperbolic for a particular light frequency. Our result points out a route toward transient hyperbolic materials, and it offers methods to achieve tunable hyperbolic dispersion with great potential for ultrafast device applications.

源语言英语
文章编号014310
期刊Physical Review B
97
1
DOI
出版状态已出版 - 22 1月 2018

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