Integrated nanoscale photonic devices have wide applications ranging from optical interconnects and optical computing to optical communications. Wavelength demultiplexer is an essential on-chip optical component which can separate the incident wavelength into different channels; however, the experimental progress is very limited. Here, using a multi-component nano-cavity design, we realize an u...

The equilibrium density distribution and thermodynamic properties of a Lennard-Jones fluid confined to nano-sized spherical cavities at constant chemical potential was determined using Monte Carlo simulations. The results describe both a single cavity with semipermeable walls as well as a collection of closed cavities formed at constant chemical potential. The results are compared to calculatio...

Nano fabricated amplifier for semiconductor epitaxial laser A major challenge for building a widely tunable external cavity Mid-Infrared (MIR) laser using latest semiconductor epitaxial (epi) laser is to apply the Anti-Reflection (AR) coating that could turn the otherwise Fabry-Perot (FP) epi laser waveguide into an amplifier. As the epi laser waveguide are progressing rapidly in terms of tunin...

Amphiphilic cyclodextrins have been synthesized with self-acylating reaction using vinyl esters in dimethylformamide. In the present study no base, catalyst, or enzyme was used, and the structural analyses using thin layer chromatography, nuclear magnetic resonance spectroscopy and mass spectrometry show that the cyclodextrin is substituted preferentially by one acyl moiety at the C2 position o...

Cavity nonlinear optics enables intriguing physical phenomena to occur at micro- or nano-scales with modest input powers. While this enhances capabilities in applications such as comb generation, frequency conversion, and quantum optics, undesired effects including photorefraction thermal bistability are exacerbated. In Letter, we propose demonstrate a highly effective method of achieving cavit...

We propose a point-shifted nanocavity based on square lattice photonic crystal, which sustains a lowest-order whispering-gallery (WG) mode. In simulation, the optimized WG mode (quality (Q) factor approximately 14,000) in point-shifted nanocavity can be with smaller mode volume (approximately 5.5(lambda/2n)(3)) but larger nano-post tolerance than those in single-defect cavity design. From well-...

HD 169142 is part of the class (pre-)transitional protoplanetary disks showing multiple carbon nanodust spectroscopic signatures (aromatic, aliphatic) dominating infrared spectrum. Precise constraints on spatial distribution and properties carbonaceous dust particles are essential to understanding physics disk. The disk seen almost face-on thus offers a unique opportunity study radial evolution...

The integration of optical devices and electronic devices on the same platform is currently a gateway into many research and practical applications. Because silicon and silicon compatible materials have dominated electronic development, optical devices must also conform to the silicon platform. One of the greatest challenges in building such an integrated opto-electronic system is the developme...