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Updated: Jul 15, 2026
12:21
Stimulated Stokes and Antistokes Raman Scattering in Microspherical Whispering Gallery Mode Resonators
Published on: April 4, 2016
High-Q-preserving coupling between a spiral and a semicircle micro-cavity
G D Chern1, G E Fernandes, R K Chang
1Department of Applied Physics, Yale University, CT 06520, USA. gracehern@yahoo.com
Optics Letters
|April 6, 2007
Summary
We developed a new direct coupling method for microcavities, preserving high Q-values and enabling tunable light emission. This offers an efficient alternative for integrated photonics.
Area of Science:
- Optics and Photonics
- Materials Science
Background:
- Traditional evanescent wave coupling limits planar integrated photonic devices.
- Microcavity design is crucial for high-performance photonic technologies.
Purpose of the Study:
- To introduce an efficient direct coupling design for spiral and semicircle microcavities.
- To explore an alternative to evanescent wave coupling in integrated photonics.
Main Methods:
- Designing and fabricating directly coupled spiral and semicircle microcavities.
- Utilizing an AlGaAs single-quantum-well heterostructure for current injection.
- Investigating the impact of geometric alterations on microcavity performance.
Main Results:
- Demonstrated preservation of high Q-values in coupled microcavities.
- Observed tunability of modes and output intensity by adjusting coupling parameters.
- Achieved unidirectional emission from spiral-shaped microcavities (AlGaAs and InGaN).
Conclusions:
- Direct coupling is an effective method for integrated microcavities.
- The proposed design offers control over optical properties for photonic applications.
- Unidirectional emission from spiral microcavities opens new possibilities for light sources.
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