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.
© 2007 Optical Society of America
(190.2620) Nonlinear optics : Harmonic generation and mixing
Original Manuscript: August 4, 2006
Revised Manuscript: October 26, 2006
Manuscript Accepted: October 27, 2006
Published: January 12, 2007
Domenico de Ceglia, Antonella D'Orazio, Marco De Sario, Vincenzo Petruzzelli, Francesco Prudenzano, Marco Centini, Mirko G. Cappeddu, Mark J. Bloemer, and Michael Scalora, "Enhancement and inhibition of second-harmonic generation and absorption in a negative index cavity," Opt. Lett. 32, 265-267 (2007)