TY - JOUR
T1 - Resonant terahertz radiation from Tl2Ba2CaCu 2O8+δ thin films by ultrafast optical pulse excitation
AU - Tominari, Yukihiro
AU - Kiwa, Toshihiko
AU - Murakami, Hironaru
AU - Tonouchi, Masayoshi
AU - Wald, Hagen
AU - Seidel, Paul
AU - Schneidewind, Henrik
PY - 2002/4/29
Y1 - 2002/4/29
N2 - 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.
AB - 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.
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U2 - 10.1063/1.1475770
DO - 10.1063/1.1475770
M3 - Article
AN - SCOPUS:79956024019
SN - 0003-6951
VL - 80
SP - 3147
EP - 3149
JO - Applied Physics Letters
JF - Applied Physics Letters
IS - 17
ER -