Emission of picosecond electromagnetic pulses from optically excited superconducting bridges
- 1 September 1996
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 54 (10) , R6889-R6892
- https://doi.org/10.1103/physrevb.54.r6889
Abstract
In this paper we examine the origin of the emission of picosecond electromagnetic pulses from currentbiased superconducting bridges after optical excitation with femtosecond laser pulses. The peak frequency and the amplitude of the THz pulses are quantitatively correlated to the optically measured quasiparticle dynamics. We find that reflection and absorption within the superconductor fundamentally limit the ratio of the transmitted field amplitude to the generated signal to .
Keywords
This publication has 15 references indexed in Scilit:
- Electro-optic sampling of 1.5-ps photoresponse signal from YBa2Cu3O7−δ thin filmsApplied Physics Letters, 1995
- Surface resistance and penetration depth of YBa2Cu3O7−δ thin films on silicon at ultrahigh frequenciesApplied Physics Letters, 1994
- Mechanism of nonequilibrium optical response of high-temperature superconductorsPhysical Review B, 1993
- Optimization of YBa2Cu3O7−δ submicrometer structure fabricationApplied Physics Letters, 1993
- Subnanosecond photoresponse of a YBaCuO thin film to infrared and visible radiation by quasiparticle induced suppression of superconductivityApplied Physics Letters, 1992
- Dynamic conductivity and coherence peak in superconductorsPhysical Review Letters, 1991
- Relaxation time of the order parameter in a high-temperature superconductorPhysical Review Letters, 1990
- Femtosecond optical detection of quasiparticle dynamics in high- superconducting thin filmsPhysical Review Letters, 1990
- Femtosecond optical absorption studies of nonequilibrium electronic processes in high T c superconductorsApplied Physics Letters, 1990
- Subpicosecond photoconducting dipole antennasIEEE Journal of Quantum Electronics, 1988