Arka Majumdar

TL;DR: A new lasing strategy is reported: an atomically thin crystalline semiconductor—that is, a tungsten diselenide monolayer—is non-destructively and deterministically introduced as a gain medium at the surface of a pre-fabricated PCC, allowing an optical pumping threshold as low as 27 nanowatts at 130 kelvin similar to the value achieved in quantum-dot PCC lasers.

TL;DR: In this paper, low contrast dielectric metasurface optical elements for operation at visible frequencies were demonstrated and showed transmission efficiencies as high as 90% and focal spots on the order of the design wavelength.

TL;DR: In this paper, a single layer of graphene on top of a photonic crystal cavity was demonstrated to change the cavity resonance line width and almost 400% change in resonance reflectivity.

TL;DR: In this article, the authors combine computational imaging and metasurface optics to build a system with a single metalens of numerical aperture ~0.45, which generates in-focus images under white light illumination.

TL;DR: The resonant excitation of a single quantum dot that is strongly coupled to a photonic crystal nanocavity represents a spectral window for resonantly probing the optical transitions of the quantum dot.