Cooper Pair Breaking in Lead Measured by Pulsed Terahertz Spectroscopy

Authors

John F. Federici, AT&T Bell Laboratories
Benjamin I. Greene, AT&T Bell Laboratories
Peter N. Saeta, Harvey Mudd CollegeFollow
Douglas R. Dykaar, AT&T Bell Laboratories
F. Sharifi, University of California - San Diego
R. C. Dynes, University of California - San Diego

Document Type

Conference Proceeding

Department

Physics (HMC)

Publication Date

3-1993

Abstract

A technique for characterizing pulsed far-infrared radiation with a demonstrated resolution of approximately 100 fs is used to measure directly Cooper pair breaking in superconducting lead. A 100-fs pulse of visible light is used to excite a thin-film lead sample while the Cooper pair density is optically probed using a pulse of broadband far-infrared radiation. Subsequent to the absorption of the visible pulse, a rapid (<1 >ps) change in the far-infrared optical transmission is observed, corresponding to the breaking of Cooper pairs. These results have implications for thin-film superconducting transmission lines carrying short electrical pulses.

Rights Information

© 1993 IEEE

Terms of Use & License Information

Terms of Use for work posted in Scholarship@Claremont.

DOI

10.1109/77.233620

Recommended Citation

“Cooper pair breaking in lead measured by pulsed terahertz spectroscopy,” J. F. Federici, B. I. Greene, P. N. Saeta, D. R. Dykaar, F. Sharif, and R. C. Dynes, IEEE Trans. Appl Supercond. 3, 1461 (1993). doi: 10.1109/77.233620