Femtosecond light scattering spectroscopy of single gold nanoparticles

Itoh, Tamitake; Asahi, Tsuyoshi; Masuhara, Hiroshi
September 2001
Applied Physics Letters;9/10/2001, Vol. 79 Issue 11
Academic Journal
We have developed an ultrafast, light-scattering spectroscopic system combining a conventional microscope with a pump–probe setup. We successfully measured the surface plasmon resonance band for the individual gold particles with a mean radius of 40 nm. The results on the pump–probe experiment demonstrate that both the electron–phonon and the phonon–phonon coupling processes in the individual gold particles take place with the lifetimes of 4 ps and >25 ps, respectively. © 2001 American Institute of Physics.


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