Photo-oxidative tuning of individual and coupled GaAs photonic crystal cavities

Abstract

We demonstrate a new photo-induced oxidation technique for tuning GaAs photonic crystal cavities using a $390\mathrm{nm}$ pulsed laser with an average power of $10\mu \mathrm{W}$. The laser oxidizes a small $\left(\sim 500\mathrm{nm}\right)$ diameter spot, reducing the local index of refraction and blueshifting the cavity. The tuning progress can be actively monitored in real time. We also demonstrate tuning an individual cavity within a pair of proximity-coupled cavities, showing that this method can be used to correct undesired frequency shifts caused by fabrication imperfections in cavity arrays.

4 pages, 3 figures

References in corpus (5)

• Quantum phase transitions of light
• Single photons from coupled quantum modes
• On the origin of strong photon antibunching in weakly nonlinear photonic molecules
• Ultra-low threshold, electrically pumped quantum dot photonic crystal nanocavity laser
• Local tuning of photonic crystal cavities using chalcogenide glasses

Cited by in corpus (3)

• High-precision spectral tuning of micro and nanophotonic cavities by resonantly enhanced photoelectrochemical etching
• Haldane Quantum Hall Effect for Light in a Dynamically Modulated Array of Resonators
• Effect of Emitters on Quantum State Transfer in Coupled Cavity Arrays