All-optical conditional logic with a nonlinear photonic crystal nanocavity

Details All-optical conditional logic with a nonlinear photonic crystal nanocavity All-optical conditional logic with a nonlinear photonic crystal nanocavity

2009-09-30

arxiv.org/abs/0910.0041v1

Physics

Optics

4 pages, 4 figures

Scientific paper

We demonstrate tunable frequency-converted light mediated by a chi-(2) nonlinear photonic crystal nanocavity. The wavelength-scale InP-based cavity supports two closely-spaced localized modes near 1550 nm which are resonantly excited by a 130 fs laser pulse. The cavity is simultaneously irradiated with a non-resonant probe beam, giving rise to rich second-order scattering spectra reflecting nonlinear mixing of the different resonant and non-resonant components. In particular, we highlight the radiation at the sum frequencies of the probe beam and the respective cavity modes. This would be a useful, minimally-invasive monitor of the joint occupancy state of multiple cavities in an integrated optical circuit.

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