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

Piggott, Alexander Y. and Lagoudakis, Konstantinos G. and Sarmiento, Tomas and Bajcsy, Michal and Shambat, Gary and Vučković, Jelena (2014) Photo-oxidative tuning of individual and coupled GaAs photonic crystal cavities. Optics Express, 22 (12). pp. 15017-15023. ISSN 1094-4087

[img]
Preview
Text (Piggott-etal-OE-2014-Photo-oxidative-tuning-of-individual-and-coupled)
Piggott_etal_OE_2014_Photo_oxidative_tuning_of_individual_and_coupled.pdf
Final Published Version

Download (2MB)| Preview

    Abstract

    We demonstrate a photo-induced oxidation technique for tuning GaAs photonic crystal cavities using a low-power 390 nm pulsed laser. The laser oxidizes a small (textless 1 μm) 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 tune individual cavities in a cavity network, with applications in quantum simulations and quantum computing.