Direct picosecond measurement of photoinduced Cooper-pair breaking in lead

J. F. Federici, B. I. Greene, P. N. Saeta, D. R. Dykaar, F. Sharifi, R. C. Dynes

Research output: Contribution to journalArticlepeer-review

36 Scopus citations


We report on a direct kinetic measurement of Cooper-pair breaking in superconducting lead. A 100-fs pulse of visible light was used to excite a thin-film lead sample, while the Cooper-pair density was optically probed using an ultrashort pulse of broadband far-infrared radiation. Subsequent to the absorption of the visible light, a rapid (<1 ps) change in the far-infrared optical transmission was observed, corresponding to the breaking of Cooper pairs and the collapse of the superconducting gap.

Original languageEnglish (US)
Pages (from-to)11153-11156
Number of pages4
JournalPhysical Review B
Issue number17
StatePublished - 1992
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics


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