We demonstrate coupling between the zero phonon line (ZPL) of nitrogen-vacancy centers in diamond and the modes of optical micro-resonators fabricated in single crystal diamond membranes sitting on a silicon dioxide substrate. A more than ten-fold enhancement of the ZPL is estimated by measuring the modification of the spontaneous emission lifetime. The cavity-coupled ZPL emission was further c...

The spontaneous electroluminescence emission of InAs light-emitting diodes ~LEDs! operating at 3.3 mm was studied as a function of applied hydrostatic pressure. An enhancement of a factor of almost four in radiative efficiency at room temperature was observed in the range 0 to 10 kbar. Analysis of the dependence of electroluminescence emission intensity on hydrostatic pressure at constant curre...

We optimize the efficiency of a quantum-dot-based micropillar single-photon source by minimizing spontaneous emission into unwanted background modes. perform numerical investigation emission, where we identify semi-periodic enhancement with diameter. At these peaks is reduced ?20%, and show how this reduction can be avoided simply choosing diameter away from peaks. Finally, analyze discrepancy ...

We characterize the optical response of a three-level atom subjected to an incoherent pump and continuously illuminated with weak, quasi-resonant probe field. To this end, we apply wavefunction approach based on QED Hamiltonian perturbation theory which allows for reduction atomic dynamics that effective two-level atom, implementation effects respects unitarity. Using diagrammatic representatio...

Cesium lead halide perovskite nanocrystals have emerged as one of the most promising candidates for manufacturing portable lasers and light sources. In order to harness exploit their photoluminescence more effectively, are often accompanied by a photonic scheme that improves emission. this work, introduces quasi-3D crystal composed 2D-grating on top distributed Bragg reflector (DBR) provides gr...

Abstract The spontaneous emission spectrum from a driven three-level atom placed inside a double-band photonic crystal has been investigated. We use the model which assumes the upper levels of the atomic transition are coupled via a classical driving field. The transition from one of the upper levels to lower level couples to the modes of the modified reservoir, and the transition from the oth...