Abstract
Second-harmonic generation (SHG) can be used to study the chiral properties of isotropic thin films1. The efficiency of SHG is highly dependent on the handedness of incoming circularly-polarized light. This phenomenon is referred to as nonlinear optical activity. In addition, linearly-polarized fundamental light can also be used as a probe of chirality. Recently, we showed experimentally that the second-harmonic efficiency is different upon radiation with fundamental light that is linearly-polarized -45° and +45° with respect to the p-polarized direction2. We also developed a theory of SHG from isotropic chiral surfaces that includes contributions of electric- and magnetic-dipole transitions to the surface nonlinearity3.
© 1996 Optical Society of America
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