Light localization induced enhancement of third order nonlinearities in a GaAs photonic crystal waveguide

Abstract

Nonlinear propagation experiments in GaAs photonic crystal waveguides (PCW) were performed, which exhibit a large enhancement of third order nonlinearities, due to light propagation in a slow mode regime, such as two-photon absorption (TPA), optical Kerr effect and refractive index changes due to TPA generated free-carriers. A theoretical model has been established that shows very good quantitative agreement with experimental data and demonstrates the important role that group velocity plays. These observations give a strong insight into the use of PCWs for optical switching devices.

6 pages

References in corpus (1)

• GaAs photonic crystal cavity with ultra-high Q: microwatt nonlinearity at 1.55 $\mu$m

Cited by in corpus (5)

• Optical performance monitoring at 640Gb/s via slow-light in a silicon nanowire
• Bi-directional top hat D-Scan: single beam accurate characterization of nonlinear waveguides
• Implementing structural slow light on short length scales: the photonic speed-bump
• Characterization of self-phase modulation in liquid filled hollow core photonic band gap fibers
• Real-time dynamics and cross-correlation gating spectroscopy of free-carrier Drude slow-light solitons