Dipolar second harmonic generation in inversion symmetric materials

Details Dipolar second harmonic generation in inversion symmetric materials Dipolar second harmonic generation in inversion symmetric materials

2012-03-14

arxiv.org/abs/1203.3042v1

Physics

Optics

10 pages, 3 figures

Scientific paper

It is generally argued that material classes with inversion symmetry such as silicon do not produce bulk dipole related second harmonic generation (SHG). So, SHG is then either ascribed to surface effects or bulk related electric quadrupol or magnetic dipole effects. In this letter we show analytically that due to the fact of the decaying harmonic electric field certain Si facets, as eg. Si(111), produce a bulk dipole SHG response and we propose an experiment, exploiting the different dispersion for the fundamental as well as frequency doubled radiation to determine this effect.

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