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arXiv · 1411.6375

Gallium nitride L3 photonic crystal cavities with an average quality factor of 16,900 in the near infrared

Noelia Vico Triviño·Momchil Minkov·Giulia Urbinati·Matteo Galli·Jean-François Carlin·Raphaël Butté·Vincenzo Savona·Nicolas Grandjean
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Abstract

Photonic crystal point-defect cavities were fabricated in a GaN free-standing photonic crystal slab. The cavities are based on the popular L3 design, which was optimized using an automated process based on a genetic algorithm, in order to maximize the quality factor. Optical characterization of several individual cavity replicas resulted in an average unloaded quality factor Q = 16,900 at the resonant wavelength λ $\sim 1.3$ μm, with a maximal measured Q value of 22,500. The statistics of both the quality factor and the resonant wavelength are well explained by first-principles simulations including fabrication disorder and background optical absorption.

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Noelia Vico Triviño, Momchil Minkov, Giulia Urbinati, Matteo Galli, Jean-François Carlin, Raphaël Butté, Vincenzo Savona, Nicolas Grandjean. 2014-11-24. Gallium nitride L3 photonic crystal cavities with an average quality factor of 16,900 in the near infrared. https://doi.org/10.1063/1.4903861

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