EMISSION OF PICOSECOND ELECTROMAGNETIC PULSES FROM OPTICALLY-EXCITED SUPERCONDUCTING BRIDGES

Authors
JAEKEL C ROSKOS HG KURZ H
Citation
C. Jaekel et al., EMISSION OF PICOSECOND ELECTROMAGNETIC PULSES FROM OPTICALLY-EXCITED SUPERCONDUCTING BRIDGES, Physical review. B, Condensed matter, 54(10), 1996, pp. 6889-6892
Citations number
20
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
54
Issue
10
Year of publication
1996
Pages
6889 - 6892
Database
ISI
SICI code
0163-1829(1996)54:10<6889:EOPEPF>2.0.ZU;2-W
Abstract
In this paper we examine the origin of the emission of picosecond elec tromagnetic pulses from current-biased superconducting bridges after o ptical excitation with femtosecond laser pulses. The peak frequency an d the amplitude of the THz pulses are quantitatively correlated to the optically measured quasiparticle dynamics. We find that reflection an d absorption within the superconductor fundamentally limit the ratio o f the transmitted field amplitude to the generated signal to 10(-3).