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Free keywords:
Cavity resonances
Controlled evaporation
Infiltrated water
Photonic crystal cavities
Photonic crystal microcavities
Quality factors
Spectral range
Spectral tuning
Subnanometers
Microcavities
Photonic crystals
Tuning
Abstract:
We present a spectral tuning mechanism of photonic crystal microcavities based on microfluidics. The microinfiltration with water of one or few cavity holes and its subsequent controlled evaporation allow us to tune the cavity resonances in a spectral range larger than 20 nm, with subnanometer accuracy, and we also observe that the addition of water in the microcavity region improves its quality factor Q. © 2009 American Institute of Physics.