Photonic molecules made of matched and mismatched microcavities: new functionalities of microlasers and optoelectronic components

Abstract

Photonic molecules, named by analogy with chemical molecules, are clusters of closely located electromagnetically interacting microcavities or "photonic atoms". As two or several microcavities are brought close together, their optical modes interact, and a rich spectrum of photonic molecule supermodes emerges, which depends both on geometrical and material properties of individual cavities and on their mutual interactions. Here, we discuss ways of controllable manipulation of photonic molecule supermodes, which improve or add new functionalities to microcavity-based optical components. We present several optimally-tuned photonic molecule designs for lowering thresholds of semiconductor microlasers, producing directional light emission, enhancing sensitivity of microcavity-based bio(chemical)sensors, and optimizing electromagnetic energy transfer around bends of coupled-cavity waveguides. Photonic molecules composed of identical microcavities as well as of microcavities with various degrees of size or material detuning are discussed. Microwave experiments on scaled photonic molecule structures are currently under way to confirm our theoretical predictions.

10 pages with 12 figures

References in corpus (4)

• Spectrally-engineered photonic molecules as optical sensors with enhanced sensitivity: a proposal and numerical analysis
• Bound whispering gallery modes in circular arrays of dielectric spherical particles
• Tunneling Proximity Resonances: Interplay between Symmetry and Dissipation
• Micro-optical resonators for microlasers and integrated optoelectronics: recent advances and future challenges

Cited by in corpus (4)

• Efficient analysis and design of low-loss whispering-gallery-mode coupled resonator optical waveguide bends
• Photonic molecules and spectral engineering
• Pathway interference in a loop array of three coupled microresonators
• Optical binding of cylinder photonic molecules in the near-field of partially coherent fluctuating Gaussian Schell model sources. A coherent mode representation