Photoluminescence of silicon nano-clusters functionalized microtoroids
Résumé
We report on the first realization of on-chip toroid microcavities embedding size-controlled silicon nanoclusters (Si-nc), produced by reactive magnetron co-sputtering. We demonstrate functionalized whispering gallery microresonators with low volume and high quality factor. Emission properties are optimized by tailoring the size and the shape of the toroids and the Si-nc distribution. Coalescence of Si-nc during the melting of the toroid is minimized by the design of the microdisk preforms. Photolumines- cence in the whispering gallery modes of 13:5 m diameter microtoroids, is observed in both near-field and far-field.
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