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Updated: Jun 22, 2026
13:02
Fabrication of 1-D Photonic Crystal Cavity on a Nanofiber Using Femtosecond Laser-induced Ablation
Published on: February 25, 2017
Planar cavity modes in void channel polymer photonic crystals
Optics Express
|June 5, 2009
Summary
Researchers created 3D photonic crystals with embedded microcavities using laser writing. These structures exhibit tunable optical properties, showing potential for advanced photonic devices.
Area of Science:
- Photonics
- Materials Science
- Laser Fabrication
Background:
- Photonic crystals offer control over light propagation.
- Microcavities are crucial for light-matter interactions.
- Fabricating complex 3D structures with precise optical properties remains challenging.
Purpose of the Study:
- To fabricate planar dielectric microcavities within woodpile photonic crystals.
- To investigate the optical properties of these microcavities.
- To demonstrate the tunability of cavity modes with size.
Main Methods:
- Femtosecond-laser direct writing was employed for fabrication.
- Woodpile void channel photonic crystals were used as a host.
- Infrared transmission spectra and supercell calculations were utilized for analysis.
Main Results:
- Microcavities with stop bands from 4.3 to 4.8 microm were successfully generated.
- Fundamental and second-order modes were observed crossing the stop gap.
- Cavity mode localization was confirmed to be size-dependent.
Conclusions:
- Femtosecond-laser direct writing is effective for creating microcavities in photonic crystals.
- The optical properties of the microcavities can be tuned by adjusting their size.
- These findings contribute to the development of novel photonic devices.
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