Leland Stanford Junior University

Samsung Electronics Co., Ltd.

Jung-Hwan Song

Mark Luitzen Brongersma

Junghyun Park

Anqi Ji

Real-space optical signal processing is provided by optical angular filters that act on amplitude and/or phase of zero order light passing through a resonant diffractive optical device. One application is to phase contrast microscopy, where the diffractive optical device can be configured to have an amplitude and phase response suitable for phase contrast microscopy. For example, 60% or more intensity attenuation of the zero order light, combined with a phase shift of the zero order light by +/−90 degrees.

High-quality-factor metasurface for phase contrast imaging and spatial frequency filtering

Provided is a meta-optics including a waveguide layer including a first surface and a second surface opposite to the first surface; and a plurality of meta units provided on the waveguide layer, each meta unit of the plurality of meta units including a grating configured to diffract incident light of a predetermined wavelength, a first electrode provided under the grating, a dielectric layer provided over the grating, and a second electrode provided on the dielectric layer, wherein a dielectric constant of the grating and a reflectance of the grating with respect to incident light change based on a voltage applied to the first electrode and the second electrode.

Meta-optics and electric device including the same

Waveguide enhanced resonant diffraction is provided in grating structures having negligible non-resonant diffraction by the grating. This is done by making the grating thickness much less than any relevant wavelength, and by having the grating in proximity to a waveguide for diffractive coupling to and from a mode of the waveguide. Material absorption in the grating material can be used to suppress undesired diffraction orders. The resulting structures can provide rainbow-free diffractive optical sampling.

Growing community of inventors

Mountain View, CA, United States of America

Jung-Hwan Song