Second harmonic generation by modal phase matching involving optical and plasmonic modes |
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Authors: | Pigozzo F M Modotto D Wabnitz S |
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Institution: | Dipartimento di Ingegneria dell’Informazione, Università di Brescia, via Branze 38, Brescia, 25123, Italy. |
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Abstract: | The feasibility of a modal phase matching scheme between optical modes and surface plasmonic modes is demonstrated: in fact, the high effective index of a plasmonic mode allows us to obtain phase matching even in semiconductors showing a large dispersion between fundamental and second harmonic wavelengths. We design a realistic device to obtain Type-II second harmonic generation in AlGaAs-based waveguides; whereas one of the two pumps is carried by a plasmonic mode, the generated second harmonic signal is guided inside the AlGaAs multilayer, and hence it is not hampered by high propagation losses. |
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