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Enhancement and inhibition of second-harmonic generation and absorption in a negative index cavity
Domenico de Ceglia1, Antonella D'Orazio, Marco De Sario
1Dipartmento di Elettrotecnica ed Elettronica, Politecnico di Bari, Via Orabona 4, 70125 Bari, Italy. deceglia@deemail.paliba.it
Abstract:
We study second-harmonic generation in a negative-index material cavity. The transmission spectrum shows a bandgap between the electric and magnetic plasma frequencies. The nonlinear process is made efficient by local phase-matching conditions between a forward-propagating pump and a backward-propagating second-harmonic signal. By simultaneously exciting the cavity with counterpropagating pulses, and by varying their relative phase difference, one is able to enhance or inhibit linear absorption and the second-harmonic conversion efficiency.
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