Near-infrared characterization of gallium nitride photonic-crystal waveguides and cavities.

Near-infrared gallium nitride two-dimensional photonic crystal platform on silicon

Ultraviolet optomechanical crystal cavities with ultrasmall modal mass and high optomechanical coupling rate

Optomechanical crystal (OMC) cavities which exploit the simultaneous photonic and phononic bandgaps in periodic nanostructures have been utilized to colocalize, couple, and transduce optical and mechanical resonances for nonlinear interactions and precision measurements. The development of near-infrared OMC cavities has difficulty in maintaining a high optomechanical coupling rate when scaling ...

Mid-infrared photonic crystal waveguides in silicon.

We demonstrate the design, fabrication and characterization of mid-infrared photonic crystal waveguides on a silicon-on-insulator platform, showing guided modes in the wavelength regime between 2.9 and 3.9 µm. The characterization is performed with a proprietary intra-cavity Optical Parametric Oscillator in a free space optical setup and with a fibre coupled setup using a commercial Quantum Cas...

Widely Tunable Distributed Bragg Reflectors Integrated into Nanowire Waveguides.

Periodic structures with dimensions on the order of the wavelength of light can tailor and improve the performance of optical components, and they can enable the creation of devices with new functionalities. For example, distributed Bragg reflectors (DBRs), which are created by periodic modulations in a structure's dielectric medium, are essential in dielectric mirrors, vertical cavity surface ...

Solution-processed cavity and slow-light quantum electrodynamics in near-infrared silicon photonic crystals

We demonstrate enhanced emission of solution-processed sparse lead sulfide quantum dots QDs coupled to confined as well as propagating modes in silicon photonic crystals at near-infrared communications wavelengths. In the cavity case, by using cold-cavity characterization using on-board waveguides or cross-polarization techniques, we show that the coupled QD lineshape is identical to the cold-c...