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Spatial and spectral properties of fields generated by pulsed second-harmonic generation in a periodically poled potassium-titanyl-phosphate waveguide

Abstract:

Spatial and spectral properties of the pulsed second-harmonic generation in a periodically poled potassium-titanyl-phosphate waveguide exploiting first-, second-, and third-order quasi-phase-matching are analyzed. Experimental results are interpreted using a model based on the finite-elements method. Correlations between spatial and spectral properties of the fundamental and second-harmonic fields are revealed. Individual nonlinear processes can be exploited combining spatial and spectral filtering. The influence of waveguide parameters on the second-harmonic spectra is also addressed. © 2013 American Physical Society.