Optical second harmonic generation in LiNbO3 crystals induced by a photovoltaic grating
1983
Abstract Optical second harmonic induced by photovoltaic grating written in LiNbO3:Fe was observed Harmonic generation was due to the third-order nonlinear coefficient f3333 linearized in the electric field of the grating. The phase matching condition was achieved by a suitable choice of the grating period.
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