Gallium Phosphide Photonic Crystal Nanocavities in the Visible

Details Gallium Phosphide Photonic Crystal Nanocavities in the Visible Gallium Phosphide Photonic Crystal Nanocavities in the Visible

2008-07-16

arxiv.org/abs/0807.2623v1

Physics

Optics

Scientific paper

10.1063/1.2971200

Photonic crystal nanocavities at visible wavelengths are fabricated in a high refractive index (n>3.2) gallium phosphide membrane. The cavities are probed via a cross-polarized reflectivity measurement and show resonances at wavelengths as low as 645 nm at room temperature, with quality factors between 500 and 1700 for modes with volumes 0.7(lambda/n)^3. These structures could be employed for submicron scale optoelectronic devices in the visible, and for coupling to novel emitters with resonances in the visible such as nitrogen vacancy centers, and bio- and organic molecules.

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