Abstract: An optical scanner includes a base region and a cantilevered silicon beam protruding from the base region. The optical scanner also includes a waveguide disposed on the base region and the cantilevered silicon beam and a transducer assembly comprising one or more piezoelectric actuators coupled to the cantilevered silicon beam and configured to induce motion of the cantilevered silicon beam in a scan pattern.

Abstract: A computer-implemented method may include (1) causing a radar component to emit one or more radar signals and (2) causing the radar component to analyze one or more return signals. Also disclosed is a method for forming a 3D liquid crystal polarization hologram optical element and a method for characterizing diffractive waveguides includes directing light onto a structure and measuring the diffracted light to capture at least one image of the structure. Lastly, disclosed is a method of pattering organic solid crystals and a method directing a beam of input light to a surface of an optical material to determine crystallographic and optical parameters of the optical material. Various other methods, systems, and computer-readable media are also disclosed.

Abstract: An optical scanner includes a cantilevered optical member protruding from the base portion and a transducer assembly comprising one or more piezoelectric actuators coupled to the cantilevered optical member and configured to induce motion of the cantilevered optical member in a scan pattern. In some cases, the cantilevered optical member has a tapered shape with a distal end narrower than a proximal end adjacent to the base portion of the optical scanner. In some cases, the cantilevered optical member has an elongated width along a first plane and includes a plurality of waveguides. The transducer assembly is configured to induce motion of the cantilevered optical member in a second plane orthogonal to the first plane.

Abstract: According to examples, an apparatus for implementing a hermetically-covered photonic integrated circuit on a substrate having an integrated laser diode is described. The apparatus may include a cover wafer, a housing layer including a waveguide, the waveguide including a photonic integrated circuit, a laser die including a laser cavity, and a base substrate. The base substrate may include an emission window to provide a reflective design and to eliminate a need for a polarized beam splitter, a through-wafer via element to electrical coupling to the laser die and one or more pillars to set a height of the laser die relative to the photonic integrated circuit.

Abstract: A semiconductor substrate includes a first semiconductor layer, a first dielectric layer coupled to the first semiconductor layer, and a second semiconductor layer coupled to the first dielectric layer. The second semiconductor layer includes a base portion substantially aligned with the first dielectric layer and a cantilever portion protruding from an end of the first dielectric layer. The cantilever portion includes a tapered surface tapering from a bottom surface of the second semiconductor layer toward a top surface of the second semiconductor layer.

Abstract: A semiconductor substrate includes a first semiconductor layer, a first dielectric layer coupled to the first semiconductor layer, and a second semiconductor layer coupled to the first dielectric layer. The second semiconductor layer includes a base portion substantially aligned with the first dielectric layer and a cantilever portion protruding from an end of the first dielectric layer. The cantilever portion includes a tapered surface tapering from a bottom surface of the second semiconductor layer toward a top surface of the second semiconductor layer.

Abstract: A method for fabricating a cantilever having a device surface, a tapered surface, and an end region includes providing a semiconductor substrate having a first side and a second side opposite to the first side and etching a predetermined portion of the second side to form a plurality of recesses in the second side. Each of the plurality of recesses comprises an etch termination surface. The method also includes anisotropically etching the etch termination surface to form the tapered surface of the cantilever and etching a predetermined portion of the device surface to release the end region of the cantilever.

Abstract: A waveguide display system may include an eyepiece waveguide that can have a first surface and a second surface, the waveguide including an incoupling diffractive optical element (DOE) and an outcoupling DOE. The waveguide display system may include a light source and a scanning mirror, and may include reflective and collimating optical elements. The incoupling DOE can be configured to selectively propagate incident light beams to the outcoupling DOE in the waveguide through total internal reflection (TIR).

Abstract: A method for fabricating a cantilever having a device surface, a tapered surface, and an end region includes providing a semiconductor substrate having a first side and a second side opposite to the first side and etching a predetermined portion of the second side to form a plurality of recesses in the second side. Each of the plurality of recesses comprises an etch termination surface. The method also includes anisotropically etching the etch termination surface to form the tapered surface of the cantilever and etching a predetermined portion of the device surface to release the end region of the cantilever.

Abstract: A waveguide display system may include an eyepiece waveguide that can have a first surface and a second surface, the waveguide including an incoupling diffractive optical element (DOE) and an outcoupling DOE. The waveguide display system may include a light source and a scanning mirror, and may include reflective and collimating optical elements. The incoupling DOE can be configured to selectively propagate incident light beams to the outcoupling DOE in the waveguide through total internal reflection (TIR).

Abstract: An optical scanner includes a cantilevered optical member protruding from the base portion and a transducer assembly comprising one or more piezoelectric actuators coupled to the cantilevered optical member and configured to induce motion of the cantilevered optical member in a scan pattern. In some cases, the cantilevered optical member has a tapered shape with a distal end narrower than a proximal end adjacent to the base portion of the optical scanner. In some cases, the cantilevered optical member has an elongated width along a first plane and includes a plurality of waveguides. The transducer assembly is configured to induce motion of the cantilevered optical member in a second plane orthogonal to the first plane.