Optical modes within III-nitride multiple quantum well microdisk cavities

Optical modes within III-nitride multiple quantum well microdisk cavities

Distinctive signature of indium gallium nitride quantum dot lasing in microdisk cavities.

Low-threshold lasers realized within compact, high-quality optical cavities enable a variety of nanophotonics applications. Gallium nitride materials containing indium gallium nitride (InGaN) quantum dots and quantum wells offer an outstanding platform to study light-matter interactions and realize practical devices such as efficient light-emitting diodes and nanolasers. Despite progress in the...

Optical manipulation of microparticles using whispering-gallery modes in a silicon nitride microdisk resonator.

We demonstrate optical manipulation of 1 μm sized polystyrene microparticles on silicon nitride microdisk resonator devices using whispering-gallery modes in an integrated optofluidic chip. We demonstrate multiple trapping tracks and extended trapping ranges within single wavelengths through exciting high-order modes. We observe various sets of trapping tracks and ranges through exciting variou...

Advances in III-Nitride Microstructures and Micro-Size Emitters

This paper summarizes some of the recent advances in III-nitride microstructures and micro-size emitters made by the author’s group. Microstructures discussed include micro-size disk, ring, and pyramid structures. Optical mode behaviors in these microcavities were probed by optical pumping and measuring the photoluminescence (PL) emission from individual cavities. It was found that the microdis...

Size dependence of III-nitride microdisk light-emitting diode characteristics