Abstract: A method includes receiving, from an image sensor, an image, identifying, by a first neural network, a plurality of locations-of-interest within the image, and generating, by the first neural network, a first classification label for each location-of-interest of the plurality of locations-of-interest. The method also includes extracting, from the image, a plurality of image chips derived from the plurality of locations-of-interest and generating, by a second neural network, a second classification label for each image chip of the plurality of image chips. The method further includes determining an identification of a set of targets within the image using the plurality of locations-of-interest, the first classification label for each location-of-interest of the plurality of locations-of-interest, the plurality of image chips, and the second classification label for each image chip of the plurality of image chips, and transmitting the identification of the set of targets within the image.

Abstract: An attenuated rail grabber includes a rigid support member operable to be mounted on a weapon and support an optical device including a first fastener receiver and a second fastener receiver. The attenuated rail grabber includes a fastening mechanism coupled to the rigid support member and operable to fasten the rigid support member to the weapon. The attenuated rail grabber includes a first spring feature coupled to the rigid support member. The first spring feature includes a fore mounting tab having a fore fastener aperture. The attenuated rail grabber also includes a second spring feature coupled to the rigid support member. The second spring feature includes an aft mounting tab having an aft fastener aperture. The fore fastener aperture is operable to receive a first fastener joined to the first fastener receiver and the aft fastener aperture is operable to receive a second fastener joined to the second fastener receiver.

Abstract: Photonic devices and methods for operation thereof are disclosed. A photonic device may include a laser configured to generate light. The photonic device may also include a weak value device having a ring resonator. The weak value device may receive the light from the laser and modify the light using the ring resonator to form return light. The photonic device may further include a stabilizing structure configured to generate a tuning signal based on the return light and control one or both of the laser or the ring resonator using the tuning signal to lock a frequency of the laser to a resonance frequency of the ring resonator.

Abstract: An optical system includes a focal plane array having a plurality of pixels defined by a first number of pixels arrayed in a first direction and a second number of pixels arrayed in a second direction. The optical system also includes an optical filter optically coupled to the focal plane array. The optical filter has a plurality of super-pixels. Each of the plurality of super-pixels includes a predetermined number of sub-pixels and each of the predetermined number of sub-pixels is characterized by one of a plurality of oscillatory transmission profiles as a function of wavelength.

Abstract: A multi-axis motor includes a first elongate magnet member disposed in a first orientation and a second elongate magnet member disposed in a second orientation orthogonal to the first orientation and mechanically coupled to the first elongate magnet member. The first elongate magnet member is operable to adjust a first axis of a fine axis structure. The second elongate magnet member is operable to adjust a second axis of the fine axis structure.

Abstract: Photonic devices and methods for operation thereof are disclosed. A photonic device may include a laser configured to generate light. The photonic device may also include a weak value device having a ring resonator. The weak value device may receive the light from the laser and modify the light using the ring resonator to form return light. The photonic device may further include a stabilizing structure configured to generate a tuning signal based on the return light and control one or both of the laser or the ring resonator using the tuning signal to lock a frequency of the laser to a resonance frequency of the ring resonator.

Abstract: An optical system includes a focal plane array having a plurality of pixels defined by a first number of pixels arrayed in a first direction and a second number of pixels arrayed in a second direction. The optical system also includes an optical filter optically coupled to the focal plane array. The optical filter has a plurality of super-pixels. Each of the plurality of super-pixels includes a predetermined number of sub-pixels and each of the predetermined number of sub-pixels is characterized by one of a plurality of oscillatory transmission profiles as a function of wavelength.

Abstract: A method of conditioning electrical power includes receiving an alternating current from an external power source via a port. The method also includes opening a plurality of contactors in a partial line interface switching unit to unlink a plurality of generator windings of a transmission integral generator, wherein the plurality of generator windings are connected to the port through the partial line interface switching unit. The method also includes conditioning the alternating current as the alternating current flows through the plurality of generator windings, wherein the plurality of generator windings produce an impedance, and actively rectifying the conditioned alternating current using a generator controller bus regulator coupled to the transmission integral generator to produce a direct current. The method also includes connecting the direct current to a power distribution unit.

Abstract: A system for growing a CdZnTe crystal includes a crucible operable to contain a solid CdZnTe source and a heating element operable to melt an upper surface to the solid CdZnTe source and form a tellurium rich melt floating on the solid CdZnTe source. The crucible is operable to contain an encapsulating layer above the tellurium rich melt. The system also includes a rod operable to mechanically support a CdZnTe seed crystal.

Abstract: A method of fabricating an IR transparent window wafer with integrated AR grating structures includes providing a handle wafer having a first surface and a second surface opposite the first surface, providing a device wafer including a single crystal silicon layer disposed on an oxide layer, the single crystal silicon layer having a planar side and the oxide layer having a bonding side that is opposite the planar side, forming AR grating structures in a first portion of the first surface of the handle wafer, bonding the bonding side of the oxide layer to the first surface of the handle wafer, and etching a recess in the planar side of the single crystal silicon layer to: remove the buried oxide layer, form a plurality of recess walls, and expose the AR grating structures in the first portion of the first surface of the handle wafer.

Abstract: A power system may generate electrical power or receive an alternating current from an external power source via a port. The power system may configure a plurality of contactors in a partial line switching unit to unlink a plurality of generator windings of a transmission integral generator wherein the plurality of generator windings are connected to the port through the partial line interface switching unit. The power system may condition the current as the current flows through the plurality of generator windings, wherein the plurality of generator windings produce an impedance to support an active rectification process by a machine controller. The rectified output is then made available for distribution. The power system may accept direct current for use in an inversion process by a machine controller. The plurality of generator windings can form part of a low-pass LC filter to condition the alternating current resulting from the inversion process.

Abstract: Techniques are disclosed for recursively determining a modulation index for controlling a DC-to-AC inverter. A modulation index can be selected initially. The input voltage to the power inverter can be measured. Based on the input voltage and the selected modulation index, an output voltage of the power inverter may be estimated. The output current of the power inverter can be measured. Using the estimated output voltage and the measured output current, a real power and a reactive power can be determined. The real power and the reactive power can be used to determine an updated modulation index. The updated modulation index factor can be used to generate pulse width modulation signals that are used to control the power inverter.

Abstract: An attenuated rail grabber includes a rigid support member operable to be mounted on a weapon and support an optical device including a first fastener receiver and a second fastener receiver. The attenuated rail grabber includes a fastening mechanism coupled to the rigid support member and operable to fasten the rigid support member to the weapon. The attenuated rail grabber includes a first spring feature coupled to the rigid support member. The first spring feature includes a fore mounting tab having a fore fastener aperture. The attenuated rail grabber also includes a second spring feature coupled to the rigid support member. The second spring feature includes an aft mounting tab having an aft fastener aperture. The fore fastener aperture is operable to receive a first fastener joined to the first fastener receiver and the aft fastener aperture is operable to receive a second fastener joined to the second fastener receiver.

Abstract: A method of fabricating a unit cell of a focal plane array includes providing an integrated circuit substrate, depositing a proximal portion of a dielectric layer on the substrate, and etching a plurality of recess structures into the dielectric layer. Each of the plurality of recess structures defines a partial via and includes sidewalls that extend from the first surface to a bottom portion of the respective recess structure. The method also includes forming a capacitor structure, depositing a distal portion of the dielectric layer on the capacitor structure and a region of the proximal portion of the dielectric layer, forming a plurality of vias passing to the capacitor structure, forming a metal layer, and forming a detector overlying the metal layer. The plurality of vias are positioned between the capacitor structure and the metal layer and electrically connect the capacitor structure to the metal layer.

Abstract: A photodetector structure includes a readout integrated circuit (ROIC) substrate and a dielectric layer overlaying the IC substrate. The dielectric layer defines a plurality of recesses formed in a top surface of the dielectric layer where each recess has at least one sidewall that extends from a top surface of the dielectric layer to a bottom portion of each respective recess. A capacitor structure forms a portion of the photodetector structure and includes a first electrode formed across the top surface of the dielectric layer and across the at least one sidewall of each recess of the plurality of recesses. A capacitor dielectric layer is formed across the first electrode and a second electrode is formed across the capacitor dielectric layer. A detector overlays the capacitor structure.

Abstract: A photonic device for detecting rotation and a corresponding method for operation thereof are disclosed. The photonic device includes a readout structure coupled to a ring resonator at one or more coupling points. Light is split between a lower waveguide and an upper waveguide of the readout structure in a forward direction at a beam splitter. The light in the waveguides traveling in the forward direction is coupled into the ring resonator and subsequently back into the waveguides in a reverse direction. The light is spatially phase tilted and is combined at the beam splitter. The combined light is detected by a split detector.

Abstract: Methods and systems utilizing an enhanced area getter architecture for wafer-level vacuum packaged, uncooled focal plane array (FPA) assembly are disclosed. The FPA assembly includes a device die having a first device surface, an infrared detector array disposed on the first device surface, an infrared reference pixel disposed on the first device surface, and a window die bonded to the device die. The window die includes a recess and comprises a first die surface that overlies the infrared detector array, a second die surface that overlies the infrared reference pixel, and a die wall surface joining the first die surface and the second die surface. The die wall surface forms a perimeter of the recess and a getter material is disposed on at least one of the die wall surface or the first die surface.

Abstract: A method of operating a video camera includes capturing a scene of imaging data using a focal plane array (FPA) module of the video camera. The scene of imaging data is characterized by a first bit depth. The method also includes processing, using an image processing module coupled to the FPA module, the scene of imaging data to provide display data characterized by a second bit depth less than the first bit depth. The method further includes forming a super frame including the display data and the scene of imaging data and outputting the super frame.

Abstract: A method of using an imaging system including a focal plane with one or more detectors, a lens optically coupled to the focal plane, a transparent plate optically coupled to the focal plane and lens, and an actuator coupled to the transparent plate, includes receiving, at a first area of the focal plane through the lens, light from an object at a first time. The imaging system is located in a first position relative to the object at the first time. The method also includes causing the actuator to move the transparent plate in response to movement of the imaging system relative to the object and receiving, at the first area of the focal plane through the lens, light from the object at a second time. The imaging system is located in a second position relative to the object at the second time.

Abstract: Systems, devices, and methods for performing remote sensing using WMA. Embodiments include modulating an interrogation signal, transmitting the interrogation signal to a remote vibrating target, and receiving, at a first port of a WMA interferometer, a reflected signal. Embodiments also include splitting, by a first beam splitter, the reflected signal into first and second portions propagating down first and second waveguides, delaying, by a delay element, a phase of the reflected signal, and spatially phase shifting the reflected signal. Embodiments may further include splitting, by a second beam splitter, the first and second portions of the reflected signal into third and fourth portions propagating down the first and second waveguides, detecting an intensity difference between a first lobe and a second lobe of the third portion of the reflected signal, and calculating a Doppler frequency based on the intensity difference.