Tetrahertz pulse radiation properties of a Bi2Sr2CaCu2O8+δ bowtie antenna by optical pulse illumination

Hironaru Murakami, Toshihiko Kiwa, Muku L. Misra, Masayoshi Tonouchi, Tetsuji Uchiyama, Ienari Iguchi, Zhen Wang

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

We demonstrate, for the first time, terahertz (THz) pulse radiation properties from a current biased Bi2Sr2CaCu2O8+δ (BSCCO) bowtie antenna by femtosecond laser pulse illumination. The bias current, excitation laser power and temperature dependence of the radiated amplitude of THz pulse are basically in good agreement with those observed on YBa2Cu3O7-δ (YBCO). However, the detailed properties of the THz pulse from BSCCO are considerably different from those for YBCO. The observed amplitude of the terahertz (THz) radiation pulse was very strong due to the small index value of BSCCO thin film even for the small bias current, and the Fourier components of the pulse contains the frequencies lower than 0.4 THz with a central frequency around 0.1-0.16 THz reflecting its long relaxation time of photo-excited quasi-particle in BSCCO.

Original languageEnglish
Pages (from-to)1992-1997
Number of pages6
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume41
Issue number4
DOIs
Publication statusPublished - Apr 2002
Externally publishedYes

Keywords

  • BSCCO
  • Femtosecond laser
  • High-T superconductor
  • Photo-excitation
  • Radiation
  • THz pulse

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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