• 文献标题:   Nonlinear THz Conductivity Dynamics in P-Type CVD-Grown Graphene
  • 文献类型:   Article
  • 作  者:   HWANG HY, BRANDT NC, FARHAT H, HSU AL, KONG J, NELSON KA
  • 作者关键词:  
  • 出版物名称:   JOURNAL OF PHYSICAL CHEMISTRY B
  • ISSN:   1520-6106 EI 1520-5207
  • 通讯作者地址:   MIT
  • 被引频次:   48
  • DOI:   10.1021/jp407548a
  • 出版年:   2013

▎ 摘  要

We report strong THz-induced transparency in CVD-grown graphene where 92-96% of the peak-field is transmitted compared to 74% at lower field strength. Time-resolved THz pump/THz probe studies reveal that the absorption recovers in 2-3 ps. The induced transparency is believed to arise from nonlinear pumping of carriers in graphene which suppresses the mobility and consequently the conductivity in a spectral region where the light-matter interaction is particularly strong.