One way to achieve a second-order susceptibility χ (2) in Si is by exploiting a third-order nonlinear effect, the Electric Field Induced Second Harmonic Generation (EFISHG) [1] . This phenomenon, through the use of a constant electric field ( E DC ) within the waveguide generated by lateral p-i-n junctions, gives rise to a χ (2) proportional to the electric field, χ(2)_{EFISH}=3χ(3)E_{DC} . In [2] , [3] we have shown that using an interdigitated poling structure to satisfy the quasi phase matching condition required for SHG results in an increase in the generation efficiency ( η ) compared to a simple configuration, see Fig. 1 . The presence of disorder in the waveguide and poling geometry was also shown to cause a widening of the η spectrum.

Electric Field Induced Second Harmonic Generation in Silicon Waveguides: The role of the disorder / Franchi, R.; Vecchi, C.; Ghulinyan, M.; Pavesi, L.. - (2021), pp. 1-1. (Intervento presentato al convegno 2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2021 tenutosi a deu nel 2021) [10.1109/CLEO/Europe-EQEC52157.2021.9541919].

Electric Field Induced Second Harmonic Generation in Silicon Waveguides: The role of the disorder

Franchi R.;Vecchi C.;Ghulinyan M.;Pavesi L.
2021-01-01

Abstract

One way to achieve a second-order susceptibility χ (2) in Si is by exploiting a third-order nonlinear effect, the Electric Field Induced Second Harmonic Generation (EFISHG) [1] . This phenomenon, through the use of a constant electric field ( E DC ) within the waveguide generated by lateral p-i-n junctions, gives rise to a χ (2) proportional to the electric field, χ(2)_{EFISH}=3χ(3)E_{DC} . In [2] , [3] we have shown that using an interdigitated poling structure to satisfy the quasi phase matching condition required for SHG results in an increase in the generation efficiency ( η ) compared to a simple configuration, see Fig. 1 . The presence of disorder in the waveguide and poling geometry was also shown to cause a widening of the η spectrum.
2021
2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2021
345 E 47TH ST, NEW YORK, NY 10017 USA
Institute of Electrical and Electronics Engineers Inc.
978-1-6654-1876-8
Franchi, R.; Vecchi, C.; Ghulinyan, M.; Pavesi, L.
Electric Field Induced Second Harmonic Generation in Silicon Waveguides: The role of the disorder / Franchi, R.; Vecchi, C.; Ghulinyan, M.; Pavesi, L.. - (2021), pp. 1-1. (Intervento presentato al convegno 2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2021 tenutosi a deu nel 2021) [10.1109/CLEO/Europe-EQEC52157.2021.9541919].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/332394
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