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Localized lasing modes of triangular organic microlasers
C Lafargue1, M Lebental1, A Grigis2
1Laboratoire de Photonique Quantique et Moléculaire, CNRS UMR 8537, Institut d'Alembert FR 3242, École Normale Supérieure de Cachan, 61 avenue du Président Wilson, F-94235 Cachan, France.
Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|December 11, 2014
Summary
We studied organic microlasers shaped like triangles to understand light behavior. Symmetric triangles showed predictable light patterns linked to simple orbits, unlike complex patterns in asymmetric shapes.
Area of Science:
- Optics and Photonics
- Quantum Chaos
- Materials Science
Background:
- Investigating ray-wave correspondence is crucial for understanding light behavior in microcavities.
- Triangular billiards, as simple polygonal systems, offer a unique platform to study fundamental physics.
- The properties of periodic orbits in triangles remain an area of active research.
Purpose of the Study:
- To experimentally explore the relationship between ray dynamics and wave phenomena in organic microlasers.
- To analyze how geometric shape, specifically triangular symmetry, influences lasing characteristics.
- To determine the role of periodic orbits in determining the behavior of microlasers.
Main Methods:
- Fabrication and experimental investigation of organic microlasers with various triangular geometries.
- Analysis of lasing spectra and far-field emission patterns.
- Comparison of experimental results with theoretical predictions based on periodic orbit theory.
Main Results:
- Symmetric triangular microlasers exhibited lasing states localized on simple periodic orbits.
- Lasing characteristics (spectra, far-field) of symmetric microlasers were well-explained by periodic orbit properties.
- Asymmetric triangular microlasers, lacking simple periodic orbits, displayed complex lasing properties not explained by periodic orbits.
Conclusions:
- The study confirms the ray-wave correspondence in symmetric triangular microlasers.
- Periodic orbits play a significant role in dictating the behavior of microlasers with simple geometries.
- Deviations from simple periodic orbits lead to complex and less predictable lasing phenomena.
