31 results about "Photon conversion" patented technology

The application belongs to the field of spectral measurement and imaging, and specifically discloses a single-photon detection device and a rapid spectral and imaging system based on the same. According to the application, a transmission optical fiber spectrometer separates each waveband complex light according to wavelength in space, and couples the photons of different wavelengths into an optical fiber array for time delay, so that the different wavelengths are delayed to different time points and output to a single-photon detection device. The single-photon detection device converts the photons of different wavelengths arriving at the device in time sequence into electrical signals, and obtains the number of photons at different time points after amplification and signal processing, and converts the number of photons into a spectrum. Since the transmission spectrometer can provide higher diffraction efficiency, higher spectral resolution and signal strength, the single-photon detection device can provide a faster and more accurate photon discrimination and photon counting method, and compared with the prior art, the whole can measure the spectrum more quickly, and has higher spectral resolution and signal strength.

The application belongs to the technical field of photon imaging detection, and particularly relates to a photon counting imaging detection system based on a mixed anode. The system comprises a vacuum sealed tube detector composed of a window coated with a photocathode, a microchannel plate stack and a mixed anode, and a signal processing circuit. The photocathode is used for converting photons incident through the window into photoelectrons. The microchannel plate stack is used for converting the photoelectrons into electron clouds. The mixed anode comprises a strip anode and a delay line anode arranged orthogonally, and the mixed anode transmits the collected charge short pulses of each channel to the signal processing circuit. The signal processing circuit calculates the two-dimensional coordinates of the photons based on the collected charge short pulses of each channel, and then transmits the two-dimensional coordinates of the photons to a terminal for imaging display. The application provides a photon counting imaging detection system based on a cross strip-delay line mixed anode, and solves the problem that the existing position sensitive anode detector cannot simultaneously have high spatial resolution and high temporal resolution.

The quantum system for executing the CNOT gate comprises a linearly connected command circuit providing radiation, a target cat qubit device, and a control qubit device, the target cat qubit comprising a nonlinear component called ATS, which serves two purposes: namely, to appropriately process the two-photon conversion Hamiltonian for cat qubit stabilization and to appropriately process the CNOT Hamiltonian for executing the CNOT gate by the control qubit device. At any given time, the ATS plays either the role of cat qubit stabilization or the role of the CNOT gate.

A lighting device (ED) is fitted to a vehicle including a license plate (LP), and comprises: - a source (SP) generating photons having a first wavelength corresponding to a first color and intended to provide a brake light function at a first location, - a selection device (SD) designed to direct at least some of the generated photons to a second location, and - a converter (CC) installed at this second location and converting the photons arriving at the second location into photons having a second wavelength corresponding to a second color and intended to provide a license plate (LP) illumination function. Figure 2

An energy converter for converting photons into electrical energy is implemented as an integrated circuit in which the photons propagate in a coherent manner, and includes a configuration of waveguide

According to the acousto-optic modulator for realizing microwave photon conversion and the preparation method thereof provided by the invention, the runway type micro-ring is constructed on the piezoelectric film layer, the acoustic resonance frequency is accurately matched with the free spectral range of the runway type micro-ring structure, the cyclic generation of an optical modulation sideband is realized, the interaction between light waves and sound waves is greatly enhanced, and the optical modulation efficiency is improved. The acousto-optic coupling efficiency is remarkably improved, the power consumption of the device is greatly reduced, microwave photon conversion is achieved, the device is compact in overall structure and small in size, high-density on-chip integration is easy to achieve, further, periodic polarization is carried out on the interdigital electrodes, a cavity is formed under the piezoelectric film layer, and the photoelectric conversion efficiency of the device is improved. And the piezoelectric film layer is suspended, so that the working bandwidth of the device is further improved, and the requirement of high-speed information processing is met.

A thermophotovoltaic (TPV) generator includes one or more ring modules including a frame formed from a high thermal conductivity material. Each ring module may be attached to another ring module in an axially stacked manner with a gas sealing engagement between them. Each ring module includes, on either a radially inward or radially outward surface thereof, TPV cells having a TPV cell output power no lower than 40% of the product of open circuit voltage and short circuit current at the maximum expected incident photon flux with energies above the TPV cell bandgap,. Each TPV cell converts photons with energy above the TPV cell bandgap thereof from a radiator into electrical energy. Each TPV cell includes a heat mirror on its surface, facing the radiator, which reflects photons with an energy lower than the TPV cell band gap back to the radiator.

The embodiment of the application discloses a kind of ultraviolet dot array detector and power equipment discharge detection system, including filter layer, active layer, charge separation layer, two-dimensional material modification layer and interdigital electrode.Filter layer is used to filter mixed light to obtain solar blind ultraviolet light.The material of active layer is β-Ga2O3, for converting solar blind ultraviolet photon into randomly distributed electron-hole pair.Charge separation layer is used to convert randomly distributed electron-hole pair into directional drift electron and hole.Two-dimensional material modification layer is used to transport the electron that drifts through electrode interface.Interdigital electrode is used to convert the electron that passes through electrode interface into electrical signal and then output.The embodiment of the application carries out hard filtering by filter layer to eliminate the interference of ambient light.Based on the physical characteristics of active layer material, most of the background light interference is eliminated from the nature of the material.Therefore, by different dimensions, the interference of ambient light on discharge detection is removed, and the detection effect is improved.

An X-ray detector for a computed tomography (CT) imaging system is provided. The X-ray detector includes a plurality of detector modules. Each detector module of the plurality of detector modules includes a scintillator layer configured to convert X-ray photons into lower energy light photons. Each detector module of the plurality of detector modules also includes a light imager layer configured to convert the light photons into electrons, wherein the light imager layer includes a light imager panel comprising an array of photodiodes. Each detector module of the plurality of detector modules further includes a readout device that converts the electrons into digitized pixel values, wherein each photodiode of the array of photodiodes is coupled to a respective dedicated readout channel of the readout device via a respective dedicated data line, and the readout device is configured to continuously directly readout the electrons from the array of photodiodes.

An apparatus for outputting a photon, the apparatus comprising an EM source arrangement for outputting phase modulated EM radiation; the phase modulated EM radiation comprising a set of one or more properties; the arrangement comprising at least one electromagnetic, EM, source for generating EM radiation at a plurality of different wavelengths; a modulator for receiving the EM radiation; phase modulating the received EM radiation; and outputting phase modulated EM radiation; an optical fibre for receiving the phase modulated EM radiation; converting, using a third order nonlinear susceptibility of the optical fibre, at least one photon of the phase modulated EM radiation into a first new photon; and a second new photon and outputting at least the first new photon, wherein the set of one or more properties comprises a wavelength of the phase modulated EM radiation and provides for the phase modulated EM radiation to propagate along the optical fibre with at least a positive value of a second order dispersion parameter; and a negative value of a fourth order dispersion parameter.

The present disclosure relates to a method for manufacturing a pixel that includes depositing an insulating layer on an exposed face of an interconnect structure of an integrated circuit, the interconnect structure having a conductive element flush with said exposed face; etching an opening passing through the insulating layer to the conductive element; depositing an electrode layer on and in contact with the conductive element and the insulating layer; performing chemical mechanical planarization up to the insulating layer, a portion of the electrode layer left in place in the opening forming an electrode; and depositing a film configured to convert photons into electron-hole pairs when a ray at an operating wavelength of the pixel reaches the pixel.

The invention provides a wireless communication system for dynamic spectrum management, and the system comprises an IQ modulator which modulates a baseband signal to a first optical carrier; the first tunable carrier generation device is used for generating a tunable first tunable optical carrier based on the first optical carrier; the photon wireless conversion device is used for converting a beam-combined signal of the first tunable optical carrier and the modulated baseband signal to obtain a transmitting signal; the wireless photon conversion device is used for converting the transmitting signal and a second optical carrier to obtain a second optical signal; the second tunable carrier generation device is used for generating a tunable second tunable optical carrier based on the second optical carrier; the IQ demodulator is used for performing coherent mixing and photoelectric detection on the beam-combined signal of the second optical signal and the second tunable optical carrier to obtain a baseband signal; and the first tunable carrier generation device and the second tunable carrier generation device are integrated with hot electrodes. According to the invention, the radio frequency signal can be flexibly adjusted in a wide-spectrum manner, thereby realizing dynamic spectrum management.

The application discloses a system for rapidly identifying artificial radiation, and relates to the technical field of nuclear radiation protection. The system comprises an organic scintillator, a photomultiplier, a threshold comparison circuit and a processing module. The organic scintillator is used for absorbing gamma rays of a current environment and emitting photons when excited atoms and molecules are de-excited. The photomultiplier is used for converting the emitted photons into electric pulse signals. The threshold comparison circuit is used for comparing the amplified electric pulse signals with four voltage thresholds respectively through four comparators to obtain four count rates. The processing module is used for obtaining count rates between different voltage thresholds according to the four count rates, and obtaining corresponding weights according to the count rates between the different voltage thresholds. The absolute values of the differences between the multiple weights and a pulse radiation distribution characteristic factor in a natural background radiation environment are summed to obtain a summation result. Whether artificial radiation exists is determined according to the summation result. Through the multi-threshold pulse counting and weight distribution analysis method, whether an artificial radiation source exists can be rapidly judged within 100 ms.

Some embodiments in the present disclosure relate to a photon transduction device for transducing between microwave and optical frequencies including a superconducting element, and means for preventing optical frequency radiation from being absorbed by the superconducting element.

The application discloses a kind of cognitive radio spectrum sensing device and method based on quantum compressed sensing, belong to cognitive radio technical field.Aiming at the problems in prior art, by designing a kind of cognitive radio spectrum sensing device based on quantum compressed sensing, the device includes broadband antenna module, electro-optic modulation microwave photon conversion module, data acquisition module and cognitive radio signal detection algorithm module, each module is sequentially connected, and the whole process from signal reception to spectrum analysis is completed jointly;The present application utilizes quantum compressed sensing to realize sub-Nyquist sampling and high compression ratio broadband multi-frequency microwave signal spectrum measurement, while achieving a detection probability approaching 100% when the photon counting rate is increased to 2 Mcps and the integration time is 40 ms, providing a new strategy for cognitive radio spectrum sensing, decision-making and switching.

This disclosure proposes a signal detection device to reduce the impact of interference propagation noise inside and outside the signal detection device and improve signal detection accuracy. The device includes: a detector comprising a photoelectric conversion element that converts photons (the object to be detected) into a current signal and a current / voltage converter that converts the current signal into a voltage signal; a transmission unit that transmits the voltage signal; and a data collection unit that detects and collects the transmitted voltage signal. Here, the detector is disposed inside a first shielded housing connected to the rack ground. The current / voltage converter includes a differential amplifier having first and second input terminals. The first input terminal is connected to the first output terminal of the photoelectric conversion element via a first input resistor, and the second input terminal is connected to the second output terminal of the photoelectric conversion element and the ground via a second input resistor having a resistance value larger than the first input resistor. Furthermore, the first and second output terminals of the current / voltage converter are connected to the data collection unit via a cable transmission unit. The cable transmission unit, along with the current / voltage converter and the data collection unit, is connected to the ground (see Figure 1).

The invention relates to a device for energy generation by means of a mono- and / or polycrystalline silicon coating of a workpiece comprising six modules (A, B, C, D, E, F), wherein the modules (A and B) and the modules (D, E and F) are combined to achieve a rotational movement of 360° over the horizon, and wherein the mono- and / or polycrystalline silicon coating is installed in module (C) and the inner chambers of the modules (A, B, D and E) transport the solar photons into module (C) by reflection, where they are then effectively converted into electrical energy by the installed photovoltaics, and the module (C) consists of a cylinder in which a hemisphere (11), a gimbal bearing (5) and a rotary ball bearing (4) are installed at each end, enabling assembly with the respective modules (B and D).

A smart energy recycling system and methods are disclosed. The smart energy recycling system comprises an energy device comprising emitting substrates configured to emit light of a pre-defined wavelength after receiving power from power grid. A photochromatic material disposed around emitting substrates. In an embodiment, photochromatic material is configured to convert photons emitted by emitting substrates into electrical energy. In an embodiment, the photochromatic materials corresponds to PV solar cells. An integrated energy storage device is electrically connected to an energy device and configured to store electrical energy produced by photochromatic materials. A regulation circuit of integrated energy storage device is configured to regulate and direct voltage and current generated by photochromatic materials and provide electrical energy to electrical grid or loads. In an embodiment, electrical energy being stored in an integrated energy storage device.

A device that uses a UV sensing element capable of converting photons from a high temperature thermal source, to an electrical current. Such current is then compared with the theoretical current to be obtained from a source with the dimensions of the actual source. The theoretical current is obtained by integrating.

A system includes a trapped ion, a single-photon source, or a quantum emitter configured to emit a first entangled photon and a plurality of quantum frequency conversion stages configured to convert the first entangled photon to a telecommunication photon (1260 nm to 1675 nm). Each quantum frequency conversion stage includes a corresponding pump laser, configured to interact with an incoming photon, that creates an output photon having a frequency that is at least 12 THz higher than a frequency of the pump laser, such that each quantum frequency conversion stage has a signal-to-noise ratio (SNR) of at least 1. Advantageously the system can provide an ultra-low noise quantum frequency conversion scheme to generate telecommunication photons (1260 nm to 1675 nm) entangled with photons from a quantum source (e.g., trapped ion, single-photon source, quantum emitter), a high signal integrity, and scalable long-distance telecommunication quantum networks.

A technique for using an onboard camera capable of day and night operation on an unmanned aerial vehicle (UAV) includes: traveling along a route of the UAV at night; and acquiring an aerial image with an onboard camera. The onboard camera includes: a sensor device for receiving photons and converting the photons into photoelectrons; a processor for processing the photoelectrons into an image file; a lens positioned adjacent to the sensor device for focusing the photons on the sensor device; and a filter positioned adjacent an outer surface of the lens. The filter can permit photons in the infrared light spectrum to pass to the lens, and attenuate at least a portion of the photons in the visible light spectrum prior to reaching the lens.

The invention discloses a packaging structure and a manufacturing method thereof, the packaging structure comprises a sunny side packaging layer, a nightside packaging layer, a first light receiving sub-battery, a second light receiving sub-battery and a light management module, the light management module is arranged between the sunny side packaging layer and the first light receiving sub-battery, the light management module can convert or absorb light, and the first light receiving sub-battery is connected with the second light receiving sub-battery. The light management module is used for managing the wavelength of lt; ultraviolet photons with the wavelength of 400 nm are converted into visible light photons with the wavelength of 450 nm to 1100 nm. By integrating the optical management module, the active conversion of ultraviolet light is realized instead of passive blocking, so that the efficiency and the stability of the four-terminal laminated assembly are cooperatively improved. The light management module is used for managing wavelength lt; harmful ultraviolet photons with the wavelength of 400 nm are converted into visible light photons with the wavelength of 450-1100 nm, and the conversion process is based on the down-conversion effect, so that high-energy ultraviolet rays are effectively utilized.

A SPECT imaging system includes a detector unit configured to receive photons emitted by a radiopharmaceutical and convert the photons to projection data. The radiopharmaceutical emits radiation in a higher energy radiation range of interest and a lower energy radiation range of interest, and the detector unit concurrently detects the radiation in the higher and lower energy radiation ranges. The SPECT imaging system further includes a higher energy radiation collimator is positioned between the detector unit and the photons emitted by a radiopharmaceutical. The higher energy radiation collimator is configured for septa penetration for the higher energy radiation of interest without compromising a spatial resolution for the lower energy radiation of interest. The SPECT imaging system further includes a reconstructor configured to reconstruct a first image from projection data for the higher energy radiation of interest and a second image from projection data for the lower energy radiation of interest.

A single photon emission computed tomography (SPECT) imaging system includes a detector configured to receive photons emitted by a radiopharmaceutical in an examination region and convert the received photons to measured projection data and a collimator with septa spatially arranged with respect to each other and the detector to provide channels to pass photons that traverse the channels and absorb photons that impinge the septa. A first sub-set of the photons emitted by the radiopharmaceutical traverse the channels without impinging the septa and are directly received by the detector. A second sub-set of the photons emitted by the radiopharmaceutical traverse the septa and are received by the detector. The SPECT imaging system further includes a reconstructor configured to discard scatter photons and the second sub-set of photons traversing the septa, and iteratively reconstruct an image based on the first subset of photons that are directly received by the detector.

The invention provides a method for realizing a multiplication type photoelectric detector and an infrared detection and display device, energy band engineering is used, a gold nanoparticle layer with a proper size is buried in a ZnO layer, and gold nanoparticles are used as electron traps to capture a large number of photo-induced electrons, so that the photoelectric detector is realized. The multiplication type infrared photoelectric detector and the multiplication type infrared detection and display device are enabled to obtain high gains; meanwhile, the light emitting unit is directly integrated on the multiplication type infrared photoelectric detector unit, the photon-photon conversion efficiency can be remarkably improved, and the imaging effect is improved.

Aspects of the present disclosure relate generally to systems and methods for use in the implementation and / or operation of quantum information processing (QIP) systems, and more particularly, to photon conversion to the C-band in QIP systems.

The invention provides an SPAD three-dimensional imaging method and device based on photon behavior tracking, and relates to the technical field of SPAD and computer vision. Comprising the following steps: initializing a plurality of parallel nerve trackers, and configuring state parameters including depth positions and uncertain widths for each nerve tracer; obtaining a photon timestamp sequence and converting each photon into a distance observation value; according to the current state parameter and the current distance observation value of each nerve tracker, utilizing a pre-trained double-branch neural network to predict a dynamics control parameter and a residual error correction parameter so as to control a macroscopic motion trend and microcosmically correct smooth jitter; calculating an attention mask according to whether the distance observation value falls into the uncertainty width or not, and updating state parameters according to the dynamic control parameters, the residual error correction parameters and the attention mask; and after the photon timestamp sequence is processed, preferentially outputting a depth estimation value based on attention mask accumulation confidence. In this way, the anti-noise robustness is high, and the prediction precision is high.

The invention relates to a spectrum shift radiation refrigeration photosynthetic active film as well as a preparation method and application thereof, and belongs to the technical field of agricultural films. In order to solve the problem of heat accumulation in an existing greenhouse, the invention provides a spectrum shift radiation refrigeration photosynthetic active film which sequentially comprises a surface radiation refrigeration layer, a middle spectrum shift layer, a middle ultraviolet / near-infrared isolation layer and a substrate protection layer from top to bottom. On the basis of the selective absorption characteristic of plants to light, a technical route of combining a Stokes photon conversion effect and atmospheric window radiation refrigeration is adopted, 500-600 nm wave band light is converted into 600-700 nm wave band light, meanwhile, 400-480 nm photosynthetic active light and 600-700 nm photosynthetic active light selectively penetrate through the light, and ultraviolet light and near-infrared light are blocked. The film has the characteristic of high emissivity of an atmosphere window of 8-13 microns, can realize passive radiation refrigeration, effectively reduces the temperature of a greenhouse, and has wide market prospects and social and economic benefits.

A coherent, entangled photon source which uses a continuous wave laser to replace pulsed photon excitation sources in multiphoton nonlinear processes. In various embodiments, the device comprises a continuous wave photon laser creating electromagnetic radiation at a specific frequency and narrow linewidth. The emitted beam may be conditioned by an optical fiber to allow for efficient interaction with a nonlinear crystal. The nonlinear material is designed and fabricated in a specific manner, enabling the quantum mechanical process of a single photon with well-defined energy being converted into two or more photons which display quantum correlations. The nonlinear material and subsequent fiber-optic or free space components control the temporal, spatial, and polarization-related quantum correlations such that the entangled photons can create a signal in multi photon nonlinear processes that is the same or exceeds that of a pulsed photon source but at the average and peak powers of a continuous wave laser.

The invention relates to a device (100) for positioning a single particle (2) in a sample (3) having a plurality of regions (31), the particle being capable of emitting photons upon receiving light, the device comprising:-a stage (110) of the sample; -a light source arranged to generate an illumination field for illuminating the specimen placed on the stage, the intensity of the illumination field having temporal and spatial variations such that the intensity has a predetermined temporal pattern in each region of the specimen that is different from the temporal pattern of the intensity in other regions; -a detector (140) capable of converting photons emitted by the particles in response to irradiation by the irradiation field into a signal representative of the intensity of the irradiation field received by the particles; -a computer (150) programmed to determine a sample region in which the particles are located based on temporal variations in the signal from the detector and temporal and spatial variations in the intensity of the illumination field.