We show experimentally that in second-harmonic generation from a monolayer the radiation propagating in transmission and that in reflection can have very different magnitudes. The origin of this difference lies in destructive and constructive interference of the components of the nonlinear polarization that drive the field at the second-harmonic frequency.
© 1998 Optical Society of America
(190.0190) Nonlinear optics : Nonlinear optics
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.4350) Nonlinear optics : Nonlinear optics at surfaces
(190.4710) Nonlinear optics : Optical nonlinearities in organic materials
S. A. van den Berg, E. W. M. van der Ham, Q. H. F. Vrehen, and E. R. Eliel, "Transmission reflection anomaly in second-harmonic generation from a monolayer," Opt. Lett. 23, 906-908 (1998)