Terahertz spectroscopy of dynamics of coupling between the coherent longitudinal optical phonon and plasmon in the surge current of instantaneously photogenerated carriers flowing through the i-GaAs layer of an i-GaAs/n-GaAs epitaxial structure

• Takeuchi, Hideo

• Tsuruta, Syuichi

• Nakayama, Masaaki

Abstract

We demonstrate the dynamics of coupling between the coherent longitudinal optical (LO) phonon and plasmon of instantaneously photogenerated electrons in an undoped GaAs/n-type GaAs (i-GaAs/n-GaAs) epitaxial structure using time-domain terahertz spectroscopy. Initially, we experimentally and numerically clarify the presence of the built-in electric field in the i-GaAs layer of the i-GaAs/n-GaAs epitaxial layer. Next, we performed the terahertz-wave measurements of the i-GaAs/n-GaAs epitaxial structure at various excitation conditions from a low density excitation regime to a high excitation regime....

Journal

• Journal of Applied Physics

  Journal of Applied Physics 110 (1), 013515-, 2011-07-07

  AIP Publishing

Details

• CRID: 1050282677431470336
• NII Article ID: 120006500970
• NII Book ID: AA11868165
• ISSN: 10897550
• Web Site: https://dlisv03.media.osaka-cu.ac.jp/il/meta_pub/G0000438repository_10897550-110-1-013515
• Text Lang: en
• Article Type: journal article
• Data Source:
  • IRDB
  • CiNii Articles