A Doubly Resonant Photonic-Crystal Microcavity for Second-Harmonic Generation |
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Authors: | D Antonucci A D'Orazio D De Ceglia M De Sario V Marrocco V Petruzzelli F Prudenzano |
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Institution: |
a Dipartimento di Elettrotecnica ed Elettronica, Politecnico di Bari, Bari, Italy
b Dipartimento di Ingegneria dell'Ambiente e per lo Sviluppo Sostenibile, II Facolta' di Ingegneria, Politecnico di Bari, Taranto, Italy |
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Abstract: | A two-dimensional, photonic-crystal microcavity is proposed in order to achieve efficient second-harmonic generation in the third optical communication window. The simultaneous resonance conditions of the pump beam at the fundamental frequency and second-harmonic field generated inside the structure with a defect provides a considerable enhancement of the conversion efficiency. In the configuration we propose, a transverse-magnetic (TM) polarized beam resonating at the fundamental frequency generates a second-harmonic field corresponding to a transverse-electric (TE) polarized resonant mode. The design of this doubly resonant microcavity is carried out by a linear analysis to search for the resonance frequencies and calculate their field distributions. The nonlinear analysis of the second-harmonic generation is performed using a dispersive finite-difference time-domain code. |
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Keywords: | frequency conversion photonic crystals |
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