摘要:
The use of spatial light modulators to steer light beams is disclosed. A dual frequency liquid crystal spatial light modulator can be controlled so as to form a blazed phase grating thereon that effects desire deflection of incident light.
摘要:
The use of spatial light modulators to steer light beams is disclosed. A dual frequency liquid crystal spatial light modulator can be controlled so as to form a blazed phase grating thereon that effects desire deflection of incident light.
摘要:
The use of spatial light modulators to steer light beams is disclosed. A dual frequency liquid crystal spatial light modulator can be controlled so as to form a blazed phase grating thereon that effects desire deflection of incident light.
摘要:
A method and system for aligning a spatial light modulator with respect to an imaging device is disclosed. An image of the spatial light modulator can be formed upon the imaging device and a controller can be used to position optical elements in a manner that effects translation, rotation, and scaling of the image so as to provide desired alignment. Such alignment can, for example, facilitate enhanced wavefront correction so as to at least partially compensate for the detrimental effects of atmospheric distortion in such applications as optical communications, imaging, and weaponry.
摘要:
A method and system for aligning a spatial light modulator with respect to an imaging device is disclosed. An image of the spatial light modulator can be formed upon the imaging device and a controller can be used to position optical elements in a manner that effects translation, rotation, and scaling of the image so as to provide desired alignment. Such alignment can, for example, facilitate enhanced wavefront correction so as to at least partially compensate for the detrimental effects of atmospheric distortion in such applications as optical communications, imaging, and weaponry.
摘要:
A system and method are disclosed for information assurance for networked systems. The system and method involve a quantum key distribution (QKD) source, a gimbaling device, a receiver, and a sender. The QKD source is mounted on the gimbaling device, and the QKD source propagates energy into an oversized spot beam. The receiver and the sender are within optical communication of each other. The gimbaling device performs pointing acquisition tracking only as necessary to keep the receiver located within the oversized spot beam. When the receiver is located within the oversized spot beam, the QKD source performs a QKD function. In one or more embodiments, the gimbaling device is mounted on a mobile platform. In some embodiments, the mobile platform is mounted on an unmanned aerial vehicle (UAV). In other embodiments, the mobile platform is mounted on a small ground vehicle.
摘要:
A composite structure having an embedded sensing system is provided, along with corresponding systems and methods for monitoring the health of a composite structure. The composite structure includes composite material and an optical fiber disposed within the composite material. The optical fiber includes a plurality of quantum dots for enhancing its non-linear optical properties. The quantum dots may be disposed in the core, in the cladding and/or on the surface of the optical fiber. The optical fiber is configured to support propagation of the signals and to be sensitive to a defect within the composite material. The quantum dots create a non-linear effect, such as a second order effect, in response to the defect in the composite material. Based upon the detection and analysis of the signals including the non-linear effect created by the quantum dots, a defect within the composite material may be detected.
摘要:
A free-space, decentralized, distributed computing network may comprise at least one free-space dynamic memory unit, at least one free-space processing unit, at least one free-space static memory unit, and at least one free-space communications link. The free-space dynamic memory unit may store data. The free-space processing unit may process the data, stored by the free-space dynamic memory unit, into information. The free-space static memory unit may provide operational instructions to the free-space dynamic memory unit and to the free-space processing unit. The free-space communications link may connect in the free-space the free-space dynamic memory unit, the free-space processing unit, and the free-space static memory unit. The free-space dynamic memory unit, the free-space processing unit, and the free-space static memory unit may each comprise at least one tracking device, and a transducer, transmitter, and/or receiver.
摘要:
An apparatus, system, and method are disclosed for nonlinear optical surface sensing with a single thermo-electric detector. In particular, the system includes at least two signal sources that are co-aligned to propagate photons to the same location on a surface. The system also includes at least one focusing element that focuses a sequence of photons that is reflected from the location on the surface. In addition, the system includes at least one frequency selective electromagnetic detector that detects the sequence of photons that are focused from the focusing element(s). When the frequency selective electromagnetic detector senses a photon, the frequency selective electromagnetic detector emits an electrical pulse that has a voltage that is proportional to the energy level of the photon. Additionally, the system includes a processor that processes the electrical pulses, and de-multiplexes the sequence of emitted electrical pulses based on the electrical pulse voltage of the electrical pulses.
摘要:
A method for storing and transmitting data within a network is described. The method includes receiving raw data at a first processing device and determining a first priority ranking of the raw data. The first priority ranking includes one of a high priority and a low priority. The method also includes storing low priority raw data in a first memory device and transmitting high priority raw data to a second processing device.