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Chaotic scattering in deformed optical microlasing cavities.

Zonghua Liu1, Ying-Cheng Lai

  • 1Department of Mathematics, Center for Systems Science and Engineering Research, Arizona State University, Tempe, Arizona 85287, USA.

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|May 15, 2002
PubMed
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Researchers explored dielectric optical microlaser cavities with quadrupolar deformations. They found that high-quality (high-Q) operation and directional light emission can be achieved together across many deformation levels.

Area of Science:

  • Optics and Photonics
  • Laser Physics
  • Cavity Quantum Electrodynamics

Background:

  • Dielectric optical microlasers are crucial for various photonic applications.
  • Quadrupolar deformations in cavities can significantly alter light confinement and emission properties.
  • Achieving both high-Q operation and directional emission simultaneously is a key challenge.

Purpose of the Study:

  • To determine the maximum allowable quadrupolar deformation in dielectric optical microlaser cavities.
  • To investigate the relationship between cavity deformation, Q-factor, and light emission directionality.
  • To establish criteria for optimizing microlaser performance.

Main Methods:

  • Analysis of chaotic scattering dynamics in the classical phase space of deformed cavities.

Related Experiment Videos

  • Computation of light ray trapping probability within the cavity.
  • Development of a dynamical criterion for high-Q operation.
  • Introduction of a quantitative measure for light emission directionality.

    • Main Results:

    • A dynamical criterion for achieving high-Q operation was successfully developed.
    • A method to quantify the directionality of light emission was established.
    • Results indicate that high-Q and directionality can be simultaneously achieved.
    • This simultaneous achievement is possible over a broad range of the deformation parameter.

    Conclusions:

    • Quadrupolar deformations in dielectric optical microlasers offer a pathway to simultaneously enhance Q-factor and directionality.
    • The study provides a framework for designing and optimizing microlaser cavities with specific performance characteristics.
    • The findings suggest that careful control of deformation can lead to highly efficient and directional light sources.