Integrated photonics provide a very versatile platform for nonlinear optics experiments, due to the tight field confinement that high index contrast structures offer and their great degree of tunability. Two applications of optical four wave mixing, namely squeezed light generation and optical coherence control, are studied and original theoretical results are presented. A silicon nitride platf...

The development of optical gain in chemically synthesized semiconductor nanoparticles (nanocrystal quantum dots) has been intensely studied as the first step toward nanocrystal quantum dot lasers. We examined the competing dynamical processes involved in optical amplification and lasing in nanocrystal quantum dots and found that, despite a highly efficient intrinsic nonradiative Auger recombina...

Novel optical techniques such as near-field come in a study of local properties of transparent or opaque microscopic structures such as optical waveguides, optoelectronic integrated circuits, photonic crystals, semiconductor interfaces, nanostructured systems. To control a light-matter interaction at nanometer distance, structures guiding electromagnetic energy with lateral mode confinement bel...

This study uses a laser patterning setup to write defect structures into conjugated polymer microcavity. We show that the enhances optical confinement and reduces lasing threshold.

Noncentrosymmetric potassium dihydrogen phosphate (KH2PO4 or KDP) in the tetragonal crystal phase is arguably the most extensively studied nonlinear optical crystal in history. It has prolific applications ranging from simple laser pointers to laser inertial confinement fusion systems. Recently, type IV high-pressure KDP crystal sheets with a monoclinic crystal phase having centrosymmetric prop...

We have examined in detail the optical properties and carrier capture dynamics of coupled InxGa1−xN/GaN multiple and single quantum well MQW and SQW structures that possess various numbers of QWs in the confinement region adjacent to a SQW. The aim is to study the influence of the structure of an InGaN MQW confinement region on carrier transfer and collection into a coupled SQW. By applying in ...

Organometallic vapor phase epitaxy was used to grow a novel periodic index separate confinement heterostructure (PINSCH) InGaAs/AlGaAs multiple quantum well (MQW) laser. Secondary ion mass spectrometry and transmission electron microscopy were used to characterize the structure. The performance of the PINSCH laser was compared with that of a graded index separate confinement heterostructure (GR...

We show that post-synthetic small-molecule intercalation can significantly reduce the electronic confinement of 2D hybrid perovskites. Using a combined experimental and theoretical approach, we explain structural, optical, and electronic effects of intercalating highly polarizable molecules in layered perovskites designed to stabilize the intercalants. Polarizable molecules in the organic layer...