Abstract: A magnetometer includes a resonant atomic medium, a photonic crystal surface emitting laser (PCSEL), and a light detector. The resonant atomic medium includes color centers or other dopants that form vacancies that fluoresce light when excited by an excitation light having an excitation wavelength. Characteristics of the fluoresced light are dependent upon a magnetic field applied to the resonant atomic medium. The PCSEL is configured to develop the excitation light having the excitation wavelength of the vacancies and direct the excitation light into the resonant atomic medium. The light detector is configured to receive the fluoresced light and generate a measurement signal indicative of the fluoresced light and the magnetic field applied to the resonant atomic medium.

Abstract: Optical amplifiers, laser devices, and methods of forming such devices are disclosed. One such method includes forming a lower cladding layer on a substrate and forming a doped ceramic layer on the lower cladding layer. The forming of the doped ceramic layer uses a plasma-assisted process that deposits and co-dopes a ceramic material with rare-earth dopants. The method also includes forming an upper cladding layer on the doped ceramic layer, and etching the upper cladding layer and the doped ceramic layer to form a doped ceramic waveguide.

Abstract: A laser diode includes an active region, confinement layers, and cladding layers. The active region includes one or more active layers that each exert a first strain in a first direction and one or more strain compensating layer that each exert a second strain in a second direction that is opposite the first direction. The confinement layers bound the active region. The cladding layers bound the confinement layers. In some embodiments, each active layer comprises InAs quantum dots in a InrGa1-rAs quantum well, where 0?r?1; and each strain compensating layer comprises a GaAs1-sPs layer, where 0<s?1. The confinement layers may each comprise a (AlzGa1-z)wIn1-wP layer, where 0<w<1 and 0?z<1. The cladding layers may each comprise a (AlyGa1-y)xIn1-xP layer, where 0<x<1 and 0?y<1.

Abstract: Systems and methods are provided for active electro-optical cable assemblies for high-density data transmission systems. An active electro-optical cable assembly may include comprises multi-lane copper cable array assemblies connected to small form factor connectors at a processing unit. At the end of the copper cable arrays, an electro-optical component may be used to convert electrical signals into optical signals. The optical signals may be coupled, via a fiber connector, to optical fibers. The optical fibers may be terminated with a multi-fiber push on connector for pluggable or pigtailed connections.

Abstract: Systems and methods are provided for waveguides structures with meta-optical structures for routing light between layers. An example method for manufacturing a waveguide structure with meta-optical structures for routing light may include fabricating a plurality of waveguide layers and adding one or more points of redirection where redirection of a light beam may occur. The points of redirection may be added by generating divots and adding meta-optical structures. The points of redirection may be interconnected via a high index optical material to efficiently route light between different waveguide layers and components. The points of redirection may also be configured to split or combine different polarizations of the light beam.

Abstract: A display system includes a display screen layer, a coupling region, an upper guide, a first coupler, a second coupler, and an optical element. The coupling region may be positioned along a sidewall of the display screen layer and may route a beam between the optical element and the upper guide and may route the beam between the first coupler and the second coupler. The first coupler may be positioned along a front surface of the upper guide and may couple a beam through the front surface of the upper guide. The second coupler may be positioned between the coupling region and the upper guide and may couple the beam between the coupling region and the upper guide. The optical element may be positioned below a back surface of the upper guide. A computing device with the display system is also disclosed.

Abstract: This disclosure describes a system for providing a high density three-dimensional electrical and optical direct bond interconnect. The system comprises an electro-optical interposer substrate and a waveguide operably coupled to the substrate. The waveguide comprises an electrical redistribution path that electrically couples at least one application-specific integrated circuit to a photonic integrated circuit, and an optical redistribution path that optically couples the circuits. The configuration enables micron-scale high density routing with both internal and external optical communication channels, allowing scalable integration of multiple electrical and optical devices.

Abstract: A method of forming a semiconductor device may include providing semiconductor substrate having a substrate top side and a dielectric layer along the substrate top side and forming a first mask layer over the dielectric layer. The method may include forming a lower cladding wall and an upper cladding wall via a first opening in the first mask layer. The method may also include forming a second mask layer over the dielectric layer and forming side cladding walls via second openings in the second mask layer. Various semiconductor devices having a buried waveguide in formed via the method are also disclosed.

Abstract: Systems and methods are provided for biochemical detection with ultra wideband coherent optical combs. An example biosensor includes an optical excitation source configured to generate an optical excitation signal, a programmable optical filter, an optical detector, and detection circuitry configured to apply coherent mixing detection. During a biosensory operation the optical excitation signal is applied to a biochemical sample that includes at least one targeted biochemical agent, and the optical detector captures a first signal that includes spectral responses corresponding to applying the optical excitation signal. The programmable optical filter applies optical filtering to a copy of the optical excitation signal, based on a matching target reference signal for the targeted biochemical agent, to generate second signal. The detection circuitry applies coherent mixing detection to the first signal and the second signal generated.

Abstract: This disclosure describes a photon-photon resonance photonic crystal surface-emitting laser (PPR PCSEL) operable in high-speed applications. The PPR PCSEL comprises a first photonics crystal section and a second photonics crystal section located at along the same fabrication layer. The first photonics crystal section is operable to out-couple light vertically. The second photonics crystal section is operable to produce a photon-photon resonance. The etched pattern in the first photonics crystal section is different than the etched pattern in the second photonics crystal section.

Abstract: This disclosure describes an optical communication system for coupling light, via VCSEL or PCSEL, into a multilayer waveguide. The optical communication system comprises a plurality of emitters, a semi-insulating (SI) substrate, a plurality of electrical contacts, a plurality of waveguides, and a diffractive optical coupling system. The SI substrate supports the plurality of emitters. The plurality of electrical contacts are configured to individually modulate each emitter. The plurality of waveguides and the plurality of emitters are separated by an air gap. The diffractive optical coupling system is configured to direct emitted light from the plurality of emitters into the waveguides.

Abstract: A magnetometer includes a resonant atomic medium, a photonic crystal surface emitting laser (PCSEL), and a light detector. The resonant atomic medium includes color centers or other dopants that form vacancies that fluoresce light when excited by an excitation light having an excitation wavelength. Characteristics of the fluoresced light are dependent upon a magnetic field applied to the resonant atomic medium. The PCSEL is configured to develop the excitation light having the excitation wavelength of the vacancies and direct the excitation light into the resonant atomic medium. The light detector is configured to receive the fluoresced light and generate a measurement signal indicative of the fluoresced light and the magnetic field applied to the resonant atomic medium.

Abstract: A magnetometer includes a vertical-external cavity light-emitting laser (VECSEL) structure, a resonant atomic medium, and a fluoresced light detector. The VECSEL structure includes an upper mirror, a lower mirror, a vertical cavity between the upper mirror and the lower mirror, and an active region configured to develop a VECSEL light between the upper mirror and the lower mirror. The resonant atomic medium is positioned between the upper mirror and the lower mirror of the VECSEL structure and includes lattice vacancies that fluoresce light when excited by an excitation light having an excitation wavelength. Characteristics of the fluoresced light are dependent upon a magnetic field applied to the resonant atomic medium. The fluoresced light detector is configured to generate a fluoresced measurement signal indicative of the fluoresced light and the magnetic field applied to the resonant atomic medium.

Abstract: A 3D co-packaged optics (CPO) stack device may include a thermal management and control layer, a printed circuit board (PCB) layer, a processing layer, a transimpedance amplifier and driver (TIA/Driver) electrical integrated circuit (EIC) layer, and a photonic integrated circuit (PIC) layer. The thermal management and control layer is positioned on a first surface of the PCB layer, a first surface of the processing layer is positioned on a second surface of the PCB layer, a first surface of the TIA/Driver EIC layer is positioned on a second surface of the processing layer, and a first surface of the PIC layer is positioned on a second surface of the TIA/Driver EIC layer.

Abstract: This disclosure describes an integrated compound semiconductor co-packaged optics (CCPO) device. The CCPO device has a photonic integrated circuit (PIC) and an electronic integrated circuit (EIC) mounted on a common package substrate. The PIC has a modulator array and a photodetector (PD) array fabricated in GaAs and/or InP. In some configurations the PIC also has an amplifier array fabricated in GaAs and/or InP. The CCPO design reduces loss and signal integrity issues that are typically present when the PIC and EIC are on separate substrates.

Abstract: A laser-splittable structures (for example, semiconductor wafers), methods for making a laser-splittable structure, systems for laser splitting a structure, and methods for laser splitting a structure. As non-limiting examples, various aspects of this disclosure provide laser-splittable semiconductor wafers, laser-splittable structures (for example, semiconductor wafers), methods for making a laser-splittable structure, systems for laser splitting a structure, and methods for laser splitting a structure, where the laser-splittable structure comprises a first layer characterized by a first laser ablation threshold, and a second layer characterized by a second laser ablation threshold that is less than the first laser ablation threshold.

Abstract: Embodiments of the present disclosure may comprise a monolithic integrated circuit device comprising an addressable laser array, where the addressable laser array comprises a plurality of N light-emitting sources. Embodiments may also comprise a multiplexer including N transistors, where each of the N transistors are associated with a different one of the plurality of N light-emitting sources. In accordance with various embodiments, each of the N transistors may be operable to address the associated light-emitting source.

Abstract: This disclosure describes a glucose monitor with one or more photonic crystal surface-emitting lasers (PCSELs). The PCSEL comprises a plurality of photonics crystal sections. Each photonics crystal section is operable to emit light of a different wavelength. The horizontal emission by each photonics crystal section may be constrained by edge lattice sections.

Abstract: A display system includes a display screen layer, a coupling region, an upper guide, a first coupler, a second coupler, and an optical element. The coupling region may be positioned along a sidewall of the display screen layer and may route a beam between the optical element and the upper guide and may route the beam between the first coupler and the second coupler. The first coupler may be positioned along a front surface of the upper guide and may couple a beam through the front surface of the upper guide. The second coupler may be positioned between the coupling region and the upper guide and may couple the beam between the coupling region and the upper guide. The optical element may be positioned below a back surface of the upper guide. A computing device with the display system is also disclosed.

Abstract: Systems and methods are provided for biochemical detection with ultra wideband coherent optical combs. An example biosensor includes an optical excitation source configured to generate an optical excitation signal, a programmable optical filter, an optical detector, and detection circuitry configured to apply coherent mixing detection. During a biosensory operation the optical excitation signal is applied to a biochemical sample that includes at least one targeted biochemical agent, and the optical detector captures a first signal that includes spectral responses corresponding to applying the optical excitation signal. The programmable optical filter applies optical filtering to a copy of the optical excitation signal, based on a matching target reference signal for the targeted biochemical agent, to generate second signal. The detection circuitry applies coherent mixing detection to the first signal and the second signal generated.