Research

SEM of diamond nanobeam photonic crystal and microdisk cavities

Diamond and SiC: Materials and photonics

Our research focuses on manipulating defect centers in diamond and silicon carbide. We characterize the material properties of diamond membranes and surfaces, and fabricate photonic devices out of diamond and silicon carbide.

GaN: Increasing efficiency of blue emission from GaN

This work focuses on the design and fabrication of optical cavities with InGaN quantum dots as emitters. These emitters have many advantages over other III-V systems due to their high bandgap/exciton binding energy/oscillator strength/etc. which should allow for room temperature operation of novel quantum devices emitting at visible wavelengths. Such material is relatively new however and there are challenges in the material quality and fabrication of such devices. We investigate GaN photonic crystal and microdisk cavities in order to access and overcome such challenges.

Metal-optics:

We are developing metallic resonators to enhance spontaneous emission from various emitters including organic molecules, nano-crystals, and semiconductor quantum confined structures. Research includes design of metallic nanostructures for better control over plasmonic resonances, development of nanofabrication techniques for metallic geometries, and characterization of emitter dynamics under concentrated optical field.

ZnO: Functional 3D nanostructures for optoelectronics

Investigation and engineering of aqueously grown zinc oxide for optoelectronic applications. Shape and morphology can be controlled through solution chemistry, template growth, and top-down fabrication methods. Fabricated structures include 1D nanowires, 2D thin films, and arbitrary 3D shapes.