Piggott AY, Lagoudakis KG, Sarmiento T, Bajcsy M, Shambat G, Vučković J. Photo-oxidative tuning of individual and coupled GaAs photonic crystal cavities.
OPTICS EXPRESS 2014;
22:15017-15023. [PMID:
24977595 DOI:
10.1364/oe.22.015017]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
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 (< 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.
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