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Fabrication of Silica Ultra High Quality Factor Microresonators
Published on: July 2, 2012
Ultra-high-Q three-dimensional photonic crystal nano-resonators.
Optics Express
|June 25, 2009
Summary
Researchers designed two nano-resonator modes in a 3D photonic crystal waveguide. Light confinement within the photonic band gap led to exponentially increasing quality factors with more unit cells.
Area of Science:
- Photonics
- Nanotechnology
- Materials Science
Background:
- Photonic crystals offer unique light manipulation properties.
- Nano-resonators are crucial for integrated photonic devices.
- Woodpile structures provide three-dimensional photonic band gaps.
Purpose of the Study:
- To design and analyze nano-resonator modes within a woodpile 3D photonic crystal.
- To investigate light confinement and quality factor enhancement in optical waveguides.
Main Methods:
- Modulation of unit cell size in a woodpile photonic crystal.
- Design of dipole and quadrupole nano-resonator modes.
- Analysis of light confinement using a complete photonic band gap.
Main Results:
- A dipole mode with a 2.88 cubic half-wavelengths mode volume was achieved.
- A quadrupole mode with an 8.3 cubic half-wavelengths mode volume was achieved.
- Quality factor increased exponentially with the number of unit cells for light confinement.
Conclusions:
- Nano-resonator modes can be effectively designed in woodpile 3D photonic crystals.
- Complete photonic band gaps enable efficient three-dimensional light confinement.
- Increased unit cells significantly enhance the quality factor of nano-resonators.
