Optical modes in semiconductor microtube ring resonators.

  title={Optical modes in semiconductor microtube ring resonators.},
  author={Tobias Kipp and HJ. Welsch and Ch Strelow and Christian Heyn and Detlef Heitmann},
  journal={Physical review letters},
  volume={96 7},
We demonstrate optical modes in InGaAs/GaAs microtubes acting as optical ring resonators. Self-supporting microtubes were fabricated by optical lithography and wet-etching processes utilizing the self-rolling mechanism of strained bilayers. The optical modes were probed by the photoluminescence of InAs quantum dots embedded in the tube's wall. In this novel microtube ring resonator we find a spectrum of sharp modes. They are in very good agreement with the theoretical results for a closed thin… CONTINUE READING
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