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Light amplification from Cantor and asymmetric multilayer resonators.
Optics Express
|June 6, 2009
Summary
Fractal and asymmetric multilayer resonators enhance light amplification. Cantor structures show sharper gain peaks than periodic ones, while asymmetric designs offer higher gain for short lengths.
Area of Science:
- Optics and Photonics
- Materials Science
Background:
- Multilayer resonator structures are key for controlling light propagation.
- Fractal and asymmetric designs offer unique optical properties compared to periodic systems.
Purpose of the Study:
- To theoretically investigate light amplification in fractal and asymmetric multilayer resonators.
- To analyze the amplitude gain of transmitted light using gain maps.
Main Methods:
- Theoretical analysis of multilayer resonator structures.
- Generation and analysis of two-dimensional gain maps plotted against structural parameters.
- Comparison of gain, group velocity, and electromagnetic energy distribution.
Main Results:
- Gain maps reveal regularities in gain peaks and bandgap locations.
- Cantor structures demonstrate higher and sharper gain peaks at bandgap edges compared to periodic structures.
- Asymmetric resonators provide greater gain than symmetric ones for short gain lengths.
Conclusions:
- Fractal and asymmetric multilayer resonators offer enhanced light amplification properties.
- The design of these structures, particularly asymmetry and fractal geometry, significantly influences gain characteristics.
- Gain maps are effective tools for understanding and optimizing optical gain in complex resonator systems.
