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Optical microcavities formed by semiconductor microtubes using a bottlelike geometry.

Ch Strelow1, H Rehberg, C M Schultz

  • 1Institut für Angewandte Physik und Zentrum für Mikrostrukturforschung, Universität Hamburg, Jungiusstrasse 11, Hamburg, Germany.

Physical Review Letters
|October 15, 2008
PubMed
Summary
This summary is machine-generated.

We created novel optical microtube resonators with a bottle shape. Their unique geometry allows for precise control over light modes and energy dispersion, opening new possibilities in photonics.

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Area of Science:

  • Photonics and optical engineering.
  • Resonant optical cavities.
  • Wave propagation in structured media.

Background:

  • Optical microcavities are crucial for various photonic applications.
  • Designing microcavities with specific optical properties remains a challenge.
  • Microtube resonators offer unique geometrical possibilities for light confinement.

Purpose of the Study:

  • To realize and characterize optical microtube resonators with a bottlelike geometry.
  • To develop a theoretical model for describing the optical modes within these resonators.
  • To demonstrate the ability to tailor resonator geometry for desired optical properties.

Main Methods:

  • Fabrication of optical microtube resonators with bottlelike shapes.
  • Experimental measurement of eigenenergies and axial field distributions.
  • Development and application of a theoretical model based on adiabatic separation of propagation.
  • Utilizing a photonic quasi-Schrödinger equation with a geometry-dependent quasipotential.

Main Results:

  • Successful realization of optical microtube resonators with bottlelike geometry.
  • The measured optical properties are accurately described by the developed theoretical model.
  • A precise and simple method for determining the quasipotential from the microtube geometry was established.
  • Demonstrated tunability of mode distributions and dispersion relations by altering resonator geometry.

Conclusions:

  • Bottlelike microtube resonators offer a versatile platform for controlling optical modes.
  • The theoretical model provides an intuitive and accurate description of resonator behavior.
  • Geometric tailoring of microtube resonators enables precise engineering of photonic properties.
  • This work advances the design and application of novel optical microcavities.