An optofluidic FRET (fluorescence resonance energy transfer) laser is formed by putting FRET pairs inside a microcavity acting as a gain medium. This integration of an optofluidic laser and the FRET mechanism provides novel research frontiers, including sensitive biochemical analysis and novel photonic devices, such as on-chip coherent light sources and bio-tunable lasers. Here, we investigated...

Here we report observation of extremely low-threshold lasing in organic VCSELs when the excitons are coherently coupled non-radiatively to each other. Nonradiative coupling between excitons can enhance the emission cross-section of a gain material and lead to laser action at considerably lower excitation densities [1]. The coupling strength associated with the excitonic interaction is proportio...

Manipulating polarization states of microlasers is essentially important in many emerging optical and biological applications. Strategies have been focused on using external elements or surface nanostructures to control the state laser emission. Here we introduce a strategy for manipulation based metasurfaces through round trips photons confined inside an active cavity. The roles intracavity li...

We report the development and characterization of 2-D photonic crystal (PC) microcavity devices on silicon on insulator. The transmission of light through a 2-D PC microcavity near resonance can be switched on and off by modulating the refractive index of the PC. Because silicon has poor electro-optical properties, it is advantageous to insert electro-optic materials inside the air holes. In th...

We analyze the entanglement between two matter modes in a hybrid quantum system consisting of a microcavity, a quantum well, and a mechanical oscillator. Although the exciton mode in the quantum well and the mechanical oscillator are initially uncoupled, their interaction through the microcavity field results in an indirect exciton-mode–mechanical-mode coupling. We show that this coupling is a ...

The sub-wavelength optical confinement and low optical loss of nanophotonic devices dramatically enhances the interaction between light and matter within these structures. When nanophotonic devices are combined with an efficient optical coupling channel, nonlinear optical behavior can be observed at low power levels in weakly-nonlinear materials. In a similar vein, when resonant atomic systems ...

A circular-sided square microcavity laser etched a central hole has achieved chaos operation with bandwidth of 20.8 GHz without external optical feedback or injection, in which the intensity probability distribution chaotic signal two-peak pattern was observed. Based on self-chaotic microlaser, physical random numbers at 400 Gb/s were generated by extracting four least significant bits other co...