Light at optical and near-infrared frequencies reveals its most intriguing behavior when it actively interacts with micro- and nanoscale structures — offering opportunities to control, route, and tailor electromagnetic fields that conventional bulk optics cannot reach. Our group designs nanostructures that enhance light–matter interaction at sub-wavelength scales and translates them into photonic and plasmonic integrated circuits.
SEM image of iron-nail shaped rod-type two-dimensional photonic crystal structures. High-index rods are InGaAsP/InP with multi-quantum wells (central emission ~1.55 μm).
Nat. Commun. 7, 11569 (2016)
High-index semiconductor nanodisks configured into a square-lattice array embedded in a flexible substrate, showing strain-gauge sensitivity at the nanoscale.
Opt. Express 24, 26119–26128 (2016)
SEM image of a fabricated graphene SPP detector integrated with a single Ag nanowire, together with two-dimensional spatial mapping of the photocurrent distribution as a function of polarization angle.
Opt. Lett. 43, 2889–2892 (2018)
Photonic crystal devices — gallery
Nanolaser-on-waveguide device. Optical micrograph and SEM cross-sections of an InGaAsP 1D photonic-crystal cavity transferred onto a Si waveguide.
Stacked silicon 3D photonic crystal fabricated by layer-by-layer transfer — building blocks for complete 3D photonic band gaps.
Silicon 2D photonic crystal with a trench waveguide — single-mode guidance through a defect line in a triangular air-hole lattice.