THz radiation properties of Tl2Ba2CaCu2O8+δ thin films excited by femtosecond laser pulses

Yukihiro Tominari, Toshihiko Kiwa, Hironaru Murakami, Masayoshi Tonouchi, Henrik Schneidewind, Hagen Wald, Paul Seidel

Research output: Contribution to journalConference articlepeer-review

4 Citations (Scopus)


Previously, we found the resonant THz wave radiation from c-axis oriented underdoped Tl2Ba2CaCu2O8+δ (Tl-2212) thin films by femtosecond laser pulse illumination under magnetic field. The properties of the resonant THz wave were well explained by the Josephson plasma resonance phenomenon. In the present study, the THz radiation properties were investigated for an overdoped Tl-2212 thin films. The amplitudes of THz waveform radiated under a bias current condition is much smaller than those of previous sample, while any trace of resonant THz signals could not be observed under magnetic field. These experimental results indicate the possibility that the initial THz wave radiated by ultrafast modulation in eddy-current around the vortices has an important role to excite the collective mode oscillation.

Original languageEnglish
Pages (from-to)3730-3732
Number of pages3
JournalIEEE Transactions on Applied Superconductivity
Issue number2 III
Publication statusPublished - Jun 2003
Externally publishedYes
Event2002 Applied Superconductivity Conference - Houston, TX, United States
Duration: Aug 4 2002Aug 9 2002


  • Femtosecond laser pulse
  • High-T superconductor
  • Terahertz radiation
  • TlBaCaCuO

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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