Extremely high Q and unidirectional laser emission due to combination of the Kolmogorov-Arnold-Moser barrier and the chaotic sea in a dielectric microdisk
- Title
- Extremely high Q and unidirectional laser emission due to combination of the Kolmogorov-Arnold-Moser barrier and the chaotic sea in a dielectric microdisk
- Author(s)
- Lee, Ji-Won ; Yi, Chang Hwan ; Lee, In-Goo ; Kim, Ji-Hwan ; Yu, Hyeon-Hye ; Oh, Kwang-Ryong ; Kim, Chil-Min
- DGIST Authors
- Kim, Chil-Min
- Issued Date
- 2018-12
- Type
- Article
- Article Type
- Article
- ISSN
- 0146-9592
- Abstract
- Emission characteristics of an oval-shaped microcavity laser are studied. In experiments, modes localized on periodic orbits emit unidirectionally with a narrow in-plane divergence angle of about 12 deg. The origin of high directionality is elucidated by means of classical ray dynamics. Wave calculations show that the Q-factors of the resonances are higher than 108. We explain this extraordinary high Q-factor in relation with a dynamical barrier region where Kolmogorov–Arnold–Moser curves significantly obstruct leakages of resonances. © 2018 Optical Society of America.
- Publisher
- Optical Society of America
- Related Researcher
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Kim, Chil-Min
- Research Interests Laser; Nonlinear Dynamics; Quantum Chaos; Microcavity Laser
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- Appears in Collections:
- Department of Physics and Chemistry Micro Laser Laboratory 1. Journal Articles
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