Abstract: A scene projector including an array of light emitting pixels, a tunable filter element, and a spatial light modulator. The tunable filter element is optically coupled to the array of light emitting pixels such that light emitted from the array of light emitting pixels is passed through the tunable filter element as filtered light. The spatial light modulator is optically coupled to the array of light emitting pixels and is configured to generate transmitted light by interacting with the filtered light to control at least one of an amplitude, a phase, and a polarization of the filtered light.

Abstract: Multi-spectral filter elements and methods of formation are disclosed. Each multi-spectral filter element may include a plurality of sub-filters that are, in some examples, each adapted to respond to electromagnetic radiation within respective ones of a plurality of spectral bands. A method example includes forming an optical cavity layer. Volume of the optical cavity layer can be reduced in at least N?1 number of spatial regions. The reducing may include a number of selective removal steps equal to the binary logarithm function Log2 N. In this example, each spatial region corresponds to a respective one of the plurality sub-filters. The plurality of sub-filters includes at least N sub-filters. In particular examples, the respective ones of the plurality of spectral bands may be at least partially discrete with respect to each other.

Abstract: A vehicle keyfob locator system includes a keyfob locator control panel, a display, a plurality of keyfob locator antennas and a controller. The keyfob locator control panel and the display are located within a passenger compartment of a vehicle. The plurality of keyfob locator antennas are installed at predetermined positions of a vehicle body structure of the vehicle. The controller is operably connected to the keyfob locator control panel and each of the keyfob locator antennas. The controller is configured to operate the keyfob locator antennas and determine a location of a keyfob within the vehicle body structure in response to activation of the keyfob locator control panel and further configured to display an approximate location of the keyfob on the display in response to determining the location of the keyfob within the vehicle body structure.

Abstract: Methods and structures for providing single-color or multi-color photo-detectors leveraging cavity resonance for performance benefits. In one example, a radiation detector (110) includes a semiconductor absorber layer (210, 410A, 410B, 610, 810, 1010, 1030, 1210, 1230) having a first electrical conductivity type and an energy bandgap responsive to radiation in a first spectral region, a semiconductor collector layer (220, 630, 830, 1020, 1040) coupled to the absorber layer (210, 410A, 41013, 610, 810, 1010, 1030, 1210, 1230) and having a second electrical conductivity type, and a resonant cavity coupled to the collector layer (220, 630, 830, 1020, 1040) and having a first mirror (240) and a second mirror (245).

Abstract: Methods and structures for providing single-color or multi-color photo-detectors leveraging plasmon resonance for performance benefits. In one example, a radiation detector includes a semiconductor absorber layer having a first electrical conductivity type and an energy bandgap responsive to radiation in a first spectral region, a semiconductor collector layer coupled to the absorber layer and having a second electrical conductivity type, and a plasmonic resonator coupled to the collector layer and having a periodic structure including a plurality of features arranged in a regularly repeating pattern.

Abstract: Methods and structures for providing single-color or multi-color photo-detectors leveraging plasmon resonance for performance benefits. In one example, a radiation detector includes a semiconductor absorber layer having a first electrical conductivity type and an energy bandgap responsive to radiation in a first spectral region, a semiconductor collector layer coupled to the absorber layer and having a second electrical conductivity type, and a plasmonic resonator coupled to the collector layer and having a periodic structure including a plurality of features arranged in a regularly repeating pattern.

Abstract: A dynamically controllable polarizer integrated with an imaging detector to provide “on demand” variable polarization measurements. In one example, an imaging system includes a detector array including a plurality of pixels arranged in a two-dimensional array, and a dynamic polarizer coupled to the detector array, the dynamic polarizer including at least one patterned layer of a material disposed on the detector array, the material being operable to alter its conductivity responsive to an applied stimulus to reversibly transition between a polarizing state and a non-polarizing state.

Abstract: A semiconductor structure having: a silicon structure; and a plurality of laterally spaced PiN diodes formed in the silicon structure; and a surface of the silicon structure configured to reduce reverse bias leakage current through the PiN diodes. In one embodiment, a gate electrode structures is disposed on a surface of the silicon structure, the gate electrode structure having portions disposed between adjacent pairs of the diodes, the gate structure being biased to prevent leakage current through the diodes.

Abstract: A semiconductor structure having: a silicon structure; and a plurality of laterally spaced PiN diodes formed in the silicon structure; and a surface of the silicon structure configured to reduce reverse bias leakage current through the PiN diodes. In one embodiment, a gate electrode structures is disposed on a surface of the silicon structure, the gate electrode structure having portions disposed between adjacent pairs of the diodes, the gate structure being biased to prevent leakage current through the diodes.

Abstract: A dynamically controllable polarizer integrated with an imaging detector to provide “on demand” variable polarization measurements. In one example, an imaging system includes a detector array including a plurality of pixels arranged in a two-dimensional array, and a dynamic polarizer coupled to the detector array, the dynamic polarizer including at least one patterned layer of a material disposed on the detector array, the material being operable to alter its conductivity responsive to an applied stimulus to reversibly transition between a polarizing state and a non-polarizing state.

Abstract: A radiation detector having a pair of adjacent mesas disposed on a common layer. The common layer comprises a first semiconductor layer having a first conductivity type and an energy bandgap responsive to radiation in a first spectral region. Each of the mesas comprises: a second semiconductor; and a third semiconductor layer disposed on the second semiconductor layer having the first conductivity type and an energy bandgap responsive to radiation in a second spectral region. The second semiconductor layer may have a conductivity type opposite the first conductivity type or the three layers may provide an nBn or pBp structure. The third semiconductor layer of the second mesa produces minority carriers, in response to the radiation in the second spectral region, flowing as unwanted carriers into the common layer towards the first mesa. A barrier region is disposed in the common layer to prevent the unwanted carriers from passing from the second mesa to the first mesa.

Abstract: A photo-detector having a photonic crystal structure for absorbing photons passing perpendicular to a surface of the photo-detector and a plasmonic resonance structure for absorbing photons passing along the surface of the photo-detector.

Abstract: Disclosed herein are methods of preventing freezing of relays in electrical components operated in specific atmospheric conditions. One such method described herein comprises monitoring a temperature of a relay with a thermocouple located on a contact of the relay while monitoring ambient temperature within the relay. Operation of the electrical component is simulated in a sub-zero temperature and high humidity condition. A freeze potential of the relay is determined by plotting a temperature cross-over curve, wherein both the ambient temperature and the contact temperature are plotted during the operation and cool down period. If the high freeze potential is determined, one or both of the relay and the electrical component are modified with a modification configured to decrease the high freeze potential.

Abstract: Methods and structures for providing single-color or multi-color photo-detectors leveraging cavity resonance for performance benefits. In one example, a radiation detector (110) includes a semiconductor absorber layer (210, 410A, 410B, 610, 810, 1010, 1030, 1210, 1230) having a first electrical conductivity type and an energy bandgap responsive to radiation in a first spectral region, a semiconductor collector layer (220, 630, 830, 1020, 1040) coupled to the absorber layer (210, 410A, 41013, 610, 810, 1010, 1030, 1210, 1230) and having a second electrical conductivity type, and a resonant cavity coupled to the collector layer (220, 630, 830, 1020, 1040) and having a first mirror (240) and a second mirror (245).

Abstract: A semiconductor structure having: a silicon structure; and a plurality of laterally spaced PiN diodes formed in the silicon structure; and a surface of the silicon structure configured to reduce reverse bias leakage current through the PiN diodes. In one embodiment, a gate electrode structures is disposed on a surface of the silicon structure, the gate electrode structure having portions disposed between adjacent pairs of the diodes, the gate structure being biased to prevent leakage current through the diodes.

Abstract: Methods and structures for providing single-color or multi-color photo-detectors leveraging plasmon resonance for performance benefits. In one example, a radiation detector includes a semiconductor absorber layer having a first electrical conductivity type and an energy bandgap responsive to radiation in a first spectral region, a semiconductor collector layer coupled to the absorber layer and having a second electrical conductivity type, and a plasmonic resonator coupled to the collector layer and having a periodic structure including a plurality of features arranged in a regularly repeating pattern.

Abstract: In certain embodiments, a system for detecting an agent includes a resonator device configured to receive an agent. The resonator device is also configured to transmit light received from a light source, the transmitted light having an altered peak wavelength due to the presence of the received agent. The system further includes a filter device configured to filter the transmitted light having the altered peak wavelength such that the transmitted light having the altered peak wavelength does not reach one or more detectors of a detector array configured to receive transmitted light not filtered by the filter device. The system further includes a processing system operable to determine that the one or more detectors of the detector array are not generating a signal, the absence of the signal being generated by the one or more detectors of the detector array indicating the presence of the agent.

Abstract: Multi-spectral filter elements and methods of formation are disclosed. Each multi-spectral filter element may include a plurality of sub-filters that are, in some examples, each adapted to respond to electromagnetic radiation within respective ones of a plurality of spectral bands. A method example includes forming an optical cavity layer. Volume of the optical cavity layer can be reduced in at least N?1 number of spatial regions. The reducing may include a number of selective removal steps equal to the binary logarithm function Log2N. In this example, each spatial region corresponds to a respective one of the plurality sub-filters. The plurality of sub-filters includes at least N sub-filters. In particular examples, the respective ones of the plurality of spectral bands may be at least partially discrete with respect to each other.

Abstract: Methods and structures for providing single-color or multi-color photo-detectors leveraging plasmon resonance for performance benefits. In one example, a radiation detector includes a semiconductor absorber layer having a first electrical conductivity type and an energy bandgap responsive to radiation in a first spectral region, a semiconductor collector layer coupled to the absorber layer and having a second electrical conductivity type, and a plasmonic resonator coupled to the collector layer and having a periodic structure including a plurality of features arranged in a regularly repeating pattern.

Abstract: Disclosed herein are embodiments of testing apparatus used to prevent freezing of relays in electrical components, particularly electrical components used in vehicles. One embodiment of a testing apparatus comprises a chamber with temperature control configured to control a temperature of an internal atmosphere of the chamber and a humidifier in fluid communication with the internal atmosphere of the chamber configured to supply humidified air to the internal atmosphere. A sealable opening in a wall of the chamber is configured to pass a wire harness from external the chamber to inside the chamber while maintaining a sealed environment within the chamber. The temperature control is configured to maintain a sub-zero temperature in the internal atmosphere while the humidifier maintains a saturated internal atmosphere.