Electric field induced second harmonic generation in C60 thin films was investigated. The measured bulk second order nonlinear optical response of C60 was identified as arising from nonlinear polarization moments of higher order than the electric dipole moment. The third order nonlinear optical susceptibility χ(3) (-2ω;ω, ω, 0) was determined from these measurements to be 3.6 X 10-11 esu for the fundamental wavelength of 1.06 μm, in good agreement with published data.
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics