Designing coupled microcavity lasers for high-Q modes with unidirectional light emission

Abstract

We design coupled optical microcavities and report directional light emission from high-$Q$ modes for a broad range of refractive indices. The system consists of a circular cavity that provides a high-$Q$ mode in form of a whispering gallery mode, whereas an adjacent deformed microcavity plays the role of a waveguide or collimator of the light transmitted from the circular cavity. As a result of this very simple, yet robust, concept we obtain high-$Q$ modes with promising directional emission characteristics. No information about phase space is required, and the proposed scheme can be easily realized in experiments.

3 pages, 3 figures

References in corpus (7)

• Combining directional light output and ultralow loss in deformed microdisks
• Chaotic Microcavity Laser with Low threshold and Unidirectional Output
• Ray-wave correspondence in limacon-shaped semiconductor microcavities
• Coupling of whispering-gallery modes in size-mismatched microdisk photonic molecules
• Coupled non-identical microdisks: avoided crossing of energy levels and unidirectional far-field emission
• Designing and understanding directional emission from spiral microlasers
• Ray model and ray-wave correspondence in coupled optical microdisks

Cited by in corpus (8)

• Optimization of conformal whispering gallery modes in limaçon-shaped transformation cavities
• Ultralong distance coupling between asymmetric resonant microcavities
• Terahertz beat freuquency generation from two-mode lasing operation of coupled microdisk laser
• Entropic measure of directional emissions in microcavity lasers
• Transformation cavities with a narrow refractive index profile
• Abnormal high-$Q$ modes of coupled stadium-shaped microcavities
• Quasi-polygonal Conformal Mappings for Designing Whispering Gallery Modes of Multiple Direction Emission
• Decomposed entropy and estimation of output power in deformed microcavity lasers