Ultrafast relaxation of electrons probed by surface plasmons at a thin silver film
| Abstract | We present a novel subpicosecond optical transient-reflection method, which employs the surface-plasmon resonance of a thin silver film as a very sensitive probe to study small transients of the effective electron and lattice temperature. By measuring under surface-plasmon resonant and nonresonant conditions, we can discriminate between lattice and electron heating. We find a change of the lattice and electron temperature of respectively, ΔTl=0.10(5) K and ΔTe=30–90 K for an intensity of 180 W cm−2 and an electron-phonon energy relaxation time of 670(70) fs. |
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| Authors | R. H. M. Groeneveld, R. Sprik, and A. Lagendijk |
| Year of publication | 1990 |
| Date published | 02/1990 |
| Journal | Phys. Rev. Lett. |
| Volume | 64 |
| Pages | 784-787 |
| DOI number | 10.1103/PhysRevLett.64.784 |