Resonant terahertz radiation from Tl2Ba2CaCu 2O8+δ thin films by ultrafast optical pulse excitation

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

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Abstract

We have observed the free-space radiation of the resonant terahertz wave from c-axis oriented Tl2Ba2CaCu2O 8+δ thin films by femtosecond optical pulse excitation under a radial magnetic field of about 100 Oe nearly parallel to the c axis of the thin film. The observed wave form showed clear oscillations up to 80 K. The frequency was shifted from ∼620GHz at 24 K to ∼300GHz at 80 K, corresponding to an increase in c-axis penetration depth, λc, from ∼26μm to ∼53μm, and disappeared above TC as expected for the Josephson plasma resonance.

Original languageEnglish
Pages (from-to)3147-3149
Number of pages3
JournalApplied Physics Letters
Volume80
Issue number17
DOIs
Publication statusPublished - Apr 29 2002
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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    Tominari, Y., Kiwa, T., Murakami, H., Tonouchi, M., Wald, H., Seidel, P., & Schneidewind, H. (2002). Resonant terahertz radiation from Tl2Ba2CaCu 2O8+δ thin films by ultrafast optical pulse excitation. Applied Physics Letters, 80(17), 3147-3149. https://doi.org/10.1063/1.1475770