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Silicon-based light emitters fabricated by embedding Ge self-assembled quantum dots in microdisks

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5 Author(s)
Xia, J.S. ; Research Center for Silicon Nano-science, Advanced Research Laboratories, Musashi Institute of Technology, 8-15-1 Todoroki, Setagaya-ku, Tokyo 158-0082, Japan ; Nemoto, K. ; Ikegami, Y. ; Shiraki, Y.
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Silicon-based light emitters have been fabricated on silicon-on-insulator substrates by embedding Ge self-assembled quantum dots in microdisk resonators. Strong room-temperature resonant luminescence is observed from the microdisks under optical pumping. Photoluminescence from Ge quantum dots is significantly enhanced by the microdisk resonators. Different kinds of cavity modes, whispering-gallery modes, and Fabry-Pérot modes are observed in the wavelength range from 1.2 to 1.6 μm for microdisks with different diameters.

Published in:

Applied Physics Letters  (Volume:91 ,  Issue: 1 )