Статья

Size dependence of the third-order susceptibility of copper nanoclusters investigated by four-wave mixing

Yang LiDepartment of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee 37235 USAKlaus BeckerFree-Electron Laser Center, Vanderbilt University, Nashville, Tennessee 37235 USAFrances M. SmithDepartment of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee 37235 USAR.H. MagruderDepartment of Materials Science and Engineering, Vanderbilt University, Nashville, Tennessee 37235 USARichard F. HaglundDepartment of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee 37235 USALina YangDepartment of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee 37235 USAR. DorsinvilleInstitute for Ultrafast Spectroscopy and Lasers, Center for Analysis of Structures and Interfaces, Departments of Electrical Engineering and Physics, The City College of New York, New York, New York 10031 USAR. R. AlfanoInstitute for Ultrafast Spectroscopy and Lasers, Center for Analysis of Structures and Interfaces, Departments of Electrical Engineering and Physics, The City College of New York, New York, New York 10031 USAR.A. ZuhrSolid-State Division, Mail Stop 6057, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 USA

1994en

ABI

Аннотация

We report on the observation of the forward degenerate four-wave mixing in four composite samples with Cu nanoclusters embedded in fused silica. The mean diameters of the copper particles in the four samples were 5, 7, 10, and 13 nm. The independent tensor elements of optical Kerr susceptibility were measured with different wave-mixing polarizations by use of 35-ps laser pulses from a mode-locked, frequency-doubled Nd:YAG laser. The measured third-order susceptibilities were on the order of 10−9–10−8 esu; the response time of the nonlinearity is faster than the laser pulse duration. The experimental results are consistent with a d−3 size dependence predicted for quantum-confined conduction band electrons in Cu nanoclusters.

Перевод пока недоступен

Идентификаторы

DOI: 10.1364/josab.11.000457

Цитирования и источники

Цитирований: 6Использованных источников: 0

Показатели — AkademScholar