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    Electrically-reconfigurable optical device structures with phase change materials
    1.
    发明授权
    Electrically-reconfigurable optical device structures with phase change materials 有权

    公开(公告)号：US12130507B1

    公开(公告)日：2024-10-29

    申请号：US18204158

    申请日：2023-05-31

    申请人： HRL Laboratories, LLC

    发明人： David Chow ,  Joseph Jensen ,  Jeong-Sun Moon ,  Kyung-Ah Son ,  Ryan Quarfoth

    IPC分类号： G02F1/01 ,  G01J1/04 ,  G02F1/17

    CPC分类号： G02F1/0147 ,  G01J1/0407 ,  G02F1/17

    摘要： A reconfigurable optical frequency selective structure having embedded therein:



    (a) an array of optical antennas for picking up propagating radiation in a visible or infrared frequency region and achieving preferential absorption of electromagnetic energy at a target wavelength k within the region,
    (b) an array of optical mesa structures of sub-wavelength scale including a phase-change material, the array of optical antennas being disposed atop the array of optical mesa structures respectively;
    (c) a metal ground plane disposed beneath the array of optical mesa structures, the array of optical mesa structures standing above the ground plane or an interfacial layer and being separated from one another to inhibit parasitic capacitance coupling therebetween; and
    (d) a plurality of heaters for selectively heating any one of the array of optical mesa structures to cause the phase change material in the selected optical mesa structure to change from an amorphous state, wherein the antenna atop the selected mesa structure is capacitively coupled to the metal ground plane, to a crystalline state wherein the antenna atop the selected mesa structure is electrically shunted to the ground plane via the selected mesa structure.

    Ultra-wide instantaneous bandwidth complex neuromorphic adaptive core processor
    5.
    发明授权
    Ultra-wide instantaneous bandwidth complex neuromorphic adaptive core processor 有权

    公开(公告)号：US12057989B1

    公开(公告)日：2024-08-06

    申请号：US17579871

    申请日：2022-01-20

    申请人： HRL Laboratories, LLC

    发明人： Sanaz Adl ,  Peter Petre ,  Adour V. Kabakian ,  Bryan H. Fong

    IPC分类号： H04L27/38

    CPC分类号： H04L27/38

    摘要： Described is a system for Neuromorphic Adaptive Core (NeurACore) signal processor for ultra-wide instantaneous bandwidth denoising of a noisy signal. The NeurACore signal processor includes a digital signal pre-processing unit for performing cascaded decomposition of a wideband complex valued In-phase and Quadrature-phase (I/Q) input signal in real time. The wideband complex valued I/Q input signal is decomposed into I and Q sub-channels. The NeurACore signal processor further includes a NeurACore and local learning layers for performing high-dimensional projection of the wideband complex valued I/Q input signal into a high-dimensional state space; a global learning layer for performing a gradient descent online learning algorithm; and a neural combiner for combining outputs of the global learning layer to compute signal predictions corresponding to the wideband complex valued I/Q input signal.

    Electrochemically cleanable windows for atomic instruments, and methods of using the same
    9.
    发明授权
    Electrochemically cleanable windows for atomic instruments, and methods of using the same 有权

    公开(公告)号：US11958088B1

    公开(公告)日：2024-04-16

    申请号：US17733629

    申请日：2022-04-29

    申请人： HRL Laboratories, LLC

    发明人： Christopher S. Roper

    IPC分类号： B08B7/00 ,  B23H3/06 ,  B23H3/08

    CPC分类号： B08B7/00 ,  B23H3/06 ,  B23H3/08

    摘要： Some variations provide an atomic instrument configured with an optically transparent and electrochemically cleanable window, comprising: a transparent first electrode; a second electrode with an atom reservoir for first metal ions; an ion conductor interposed between the first electrode and a second electrode, wherein the ion conductor is capable of transporting second metal ions, wherein the ion conductor is in contact with the first electrode and with the second electrode, and wherein the ion conductor is optically transparent; and a transparent window support in contact with the ion conductor, wherein the electrochemically cleanable window is optically transparent, wherein the transparent window support, the ion conductor, and the first electrode collectively form a transparent and electrochemically cleanable window. The disclosed technique removes adsorbed low-vapor-pressure metal thin films from the interior of windows before they become opaque, which extends system lifetime and reduces optical power requirements.