59 results about "Optical intensity" patented technology

The application belongs to the field of scintillator material preparation, and particularly relates to a manganese-based pixelated scintillator array and a preparation method and application thereof. The (BuTPP)2MnBr4 scintillator material in a molten state is filled into a quartz glass cavity by capillary action, and a glass scintillator matrix is formed by cooling and quenching; then, in-situ crystallization is realized in the glass scintillator by using femtosecond laser direct writing processing, and a pixelated array is precisely constructed. The in-situ crystallization induced by the femtosecond laser significantly improves the photoluminescence intensity and the radiation luminescence intensity of the material, effectively solves the problems of low luminescence efficiency, high pixelation processing difficulty and poor crystallization controllability of the traditional glass scintillator, and the prepared pixelated scintillator array has stable optical performance and clear pixel boundary, is suitable for X-ray imaging, radiation detection and the like, and has simple preparation process and strong controllability of parameters, thereby providing a new implementation method for the preparation of arrayed X-ray scintillators.

The utility model provides a kind of optical intensity adjustable optical filter switching device, belong to filter production technical field, including support assembly, including base, the support table of rotation connection in base end part, the support rod of fixed connection in support table end part and the connecting column of fixed connection in support table center;Switching assembly, including fixed mounting in the connecting piece of connecting column end part, hinged in the connecting piece end part link, the extension rod of insertion in link end part, the clamping block of fixed connection in the extension rod end part and the filter frame body of clamping in the clamping block end part.The utility model has the beneficial effects of: realize the flexible control of filter in three-dimensional space, can be adapted to the optical path demand of different light source, different detection equipment, expand applicable scene, shorten filter switching time, can be quickly completed filter loading and unloading, without other auxiliary tools, improve the efficiency of multiple filter alternate test.Auxiliary lamp panel provides standard light source, without external device can be completed filter light transmission performance test.

This specification relates to an optical particle counter, a method for using an optical particle counter, and a method for reducing particle counting errors during use of an optical particle counter. The method includes placing an optical isolator between a laser and a flow cell to allow laser light to pass through the flow cell and to reduce the intensity of light returned to the laser as optical feedback that could cause mode hopping.

An optical computing device and system, the optical computing device comprising an input module, a feedback module, a reservoir module and a detection module. The input module is configured to compute a first set of optical signals based on a first weight to obtain a second set of optical signals, the first set of optical signals carrying first data to be computed. The feedback module is configured to load the first computation result on feedback light to obtain a first set of feedback optical signals, the first computation result being a computation result of second data by the optical computing device, the second data being data processed before the first data. The reservoir module is configured to compute the first set of feedback optical signals and the second set of optical signals based on a second weight to obtain a third set of optical signals. The detection module is configured to detect optical intensity of the third set of optical signals to obtain a second computation result.

The application discloses a microwave photon filter and a control method thereof, and belongs to the field of optical fiber communication. The filter comprises an optical ring cavity, a tunable laser source, an electro-optic intensity modulator, a photoelectric detector and an electric vector network analyzer. The first input end of the electro-optic intensity modulator is connected with the output end of the tunable laser source, the second input port of the electro-optic intensity modulator is connected with the output end of the electric vector network analyzer, and the output end of the electro-optic intensity modulator is connected with the input end of an optical circulator in the optical ring cavity. The output end of the optical circulator in the optical ring cavity is connected with the input end of the photoelectric detector, and the output end of the photoelectric detector is connected with the input end of the electric vector network analyzer. The application can overcome the problem that the device parameters cannot be adjusted after the structure of the microwave photon filter is determined.

This invention relates to the field of optical inspection technology, specifically to a micro LED wafer-level rapid defect localization system based on photoluminescence. A broadband pulse excitation module outputs pulsed laser light matching the characteristics of the material under test; a two-dimensional scanning platform carries the wafer and achieves nanometer-level precise positioning; a time-resolved acquisition module collects fluorescence signals and converts them into time-resolved photoluminescence data; a data processing and control module synchronously controls the operation of each module, receives and processes the time-resolved photoluminescence data, extracts the transient luminescence intensity and carrier lifetime of each detection point, compares the two-dimensional feature vector formed by these two parameters with a preset defect feature database, identifies the defect type of each micro LED chip, and generates a wafer-level defect fingerprint spectrum. This system can accurately distinguish different types of failure modes such as epitaxial defects, surface state defects, and poor electrode contact, significantly improving detection efficiency and defect classification accuracy.

[Problem] To suppress crosstalk between pixels. [Solution] A solid-state imaging device according to the present invention comprises pixels. The pixels have a photoelectric conversion layer and a first diffusion region. The photoelectric conversion layer receives incident light and converts the received light into carriers based on the intensity of the light. The first diffusion region acquires the carriers produced from the light at the photoelectric conversion layer. The pixels also have second diffusion regions that acquire the carriers produced at the photoelectric conversion layer. The second diffusion regions are next to adjacent pixels at positions that are closer to the first diffusion region of the relevant pixel than the first diffusion regions of the adjacent pixels. The first diffusion region is formed deeper into the photoelectric conversion layer than the second diffusion regions.

The application relates to a laser speckle image denoising method and device, which combines the complementary advantages of a laser intensity image and a laser phase image, extracts and fuses a contour feature map of a laser speckle image and a curvature feature map and a normal vector feature map of a laser phase image, provides a neural network with abundant geometric context, and further adds geometric feature constraints in the neural network to form a hierarchical system. The synergistic effect of the geometric constraints enables the denoising model to accurately maintain the edge contour, local surface morphology, surface orientation and overall topological structure of the image when removing speckle noise, significantly improves the geometric structure integrity of the denoised image, and effectively solves the problem that denoising and structure preservation are difficult to balance and diagnostic information is lost in the background technology. The application provides a more reliable and accurate solution for medical imaging application scenarios, and has significant technical progress and application value.

The application provides a sample detection method, a detection device and a charged particle optical detection system. The sample detection method comprises the following steps: acquiring a surface topography image and cathodoluminescence data of a to-be-detected sample having a dark spot defect; extracting a region in which the cathodoluminescence intensity is lower than a set intensity threshold in each cathodoluminescence image to obtain a dark spot region; and determining failure information of the to-be-detected sample based on the surface topography image, the dark spot region, the corresponding electrical stress of the dark spot region and the corresponding time of the dark spot region. Through the application, dynamic defect detection of a blue-green laser chip is realized.

The application provides a method for detecting parasitic feedback intensity of a butt joint end face of a butt joint structure DFB laser chip, belongs to the technical field of semiconductor optoelectronic device manufacturing, and is used for solving the technical problem that the existing DFB laser chip provided with an end face butt joint structure generates parasitic light feedback at the butt joint end face, and influences spectral characteristics and modulation bandwidth; the application adopts a spectrometer to perform high-precision spectral testing on the DFB laser chip to obtain sampling data, analyzes and calculates the jitter state formed by the high and low light intensity of different wavelength points of the obtained test spectrum appearance, judges whether internal end face light feedback exists in the butt joint structure, analyzes the relative intensity of the end face feedback of the butt joint structure, and obtains the parasitic feedback intensity. The application can judge whether internal end face light feedback exists in the butt joint structure and analyze the relative intensity of the butt joint end face feedback, thereby providing an optimization direction and basis for end face butt joint process and optical waveguide design; and the application does not need to increase new testing equipment, and has good universality.

The objective of the present invention is to provide: a beam combiner in which the intensity of blue laser light after coupling is sufficiently strong and a temperature rise is suppressed; and a beam combiner system including the beam combiner. A beam combiner (1) according to the present invention comprises a substrate (2) and an optical multilayer film (4) formed directly on a substrate surface (Q), which is the surface of the substrate (2). The optical multilayer film (4) has alternating low refractive index layers and high refractive index layers, transmits first laser light (L1) in the blue region of p-polarized light, and reflects polarization-converted laser light (LZ) in the blue region of s-polarized light. Each high refractive index layer of the optical multilayer film 4 is an HfO2 layer made of HfO2 and contains a monoclinic crystal. The (-111) plane of the monoclinic crystal is oriented in the direction perpendicular to the substrate surface (Q).

1. The name of the present design product: dynamic graphical user interface of laser treatment operation of electronic device (ML-3080Q). 2. The use of the present design product: an electronic device. 3. The design points of the present design product: the interface content in the graphical user interface. 4. The picture or photo that best indicates the design points: design 1 interface change state figure 4. 5. Design 1 is designated as the basic design. 6. The use of the graphical user interface: the present design product is used for the operation of the laser treatment function. 7. Human-computer interaction method of graphical user interface: In Design 1, after powering on, the device displays the main view of Design 1. Entering the operation password in the main view of Design 1 sequentially displays the following interface state changes: Design 1 interface state change diagram 1, Design 1 interface state change diagram 2, Design 1 interface state change diagram 3, and Design 1 interface state change diagram 4. Design 1 interface state change diagram 4 displays relevant parameters such as the laser wavelength, pulse frequency, energy density, spot diameter, indicator light intensity, count value, and laser mode, as well as the current working status of the device. It also has function buttons for setting these parameters and working status. Click the "Ready" button in the lower right corner of Design 1 Interface Change State Diagram 4. The interface will jump from Design 1 Interface Change State Diagram 4 to Design 1 Interface Change State Diagram 5. In Design 2, after powering on, the device displays the Design 2 main view. Enter the operation password in the Design 2 main view, and the Design 2 Interface Change State Diagrams 1, 2, 3, and 4 will be displayed sequentially. Design 2 Interface Change State Diagram 4 displays the laser wavelength, pulse frequency, energy density, spot diameter, indicator light intensity, count value, laser mode, etc. of the device currently in operation. The device displays relevant parameters and its current operating status, and also has function buttons for setting these parameters and operating status. Clicking the "Information" button at the bottom of Design 2 interface change state diagram 4 will jump the interface from Design 2 interface change state diagram 4 to Design 2 interface change state diagram 5. In Design 3, after powering on, the device displays the Design 3 main view. Entering the diagnostic password in the Design 3 main view will sequentially display Design 3 interface change state diagram 1, Design 3 interface change state diagram 2, Design 3 interface change state diagram 3, and Design 3 interface change state diagram 4. In Design 4, after powering on, the device displays the Design 4 main view. Enter the operation password in the main view of Design 4, and the interface will be displayed sequentially in the following diagrams: Design 4 Interface Change Status Diagram 1, Design 4 Interface Change Status Diagram 2, Design 4 Interface Change Status Diagram 3, and Design 4 Interface Change Status Diagram 4. Design 4 Interface Change Status Diagram 4 displays the laser wavelength, pulse frequency, energy density, spot diameter, indicator light intensity, count value, laser mode, and other relevant parameters and the current working status of the device. It also has function buttons for setting these parameters and working status. Press the power off button on the device, and the interface will jump from Design 4 Interface Change Status Diagram 4 to Design 4 Interface Change Status Diagram 5.

This invention provides a method for determining the dislocation density of diamond single crystals using cathodoluminescence spectroscopy, which can be applied to the field of semiconductor material characterization and defect detection. This method draws upon and develops upon colorimetric methods based on ultraviolet light intensity, utilizing the idea of ​​single measurement and quantitative analysis based on different peak ratios. It also incorporates a decoupled architecture of "destructive calibration + non-destructive measurement." First, at least five diamond single crystal calibration samples with gradient dislocation densities are selected. Cathodoluminescence spectra are acquired under low temperature and high vacuum conditions. The integrated intensity I of the A-band emission peak related to dislocations is extracted through multi-peak fitting. A and the integral intensity I of the free exciton emission peak FE Calculate the ratio R=I A / I FE Subsequently, the calibration sample was subjected to hydrogen-oxygen dry etching, and the surface dislocation density N was obtained by statistically analyzing the etching pits. The proportionality coefficient k was obtained by linear fitting with N as the ordinate and R as the abscissa. For the sample to be tested, the spectrum was collected under the same conditions and the ratio R was calculated. Substituting this value into the model N=k·R, the surface dislocation density can be quantitatively obtained.

This invention relates to the field of gravity measurement, aiming to provide a small-sized, high-precision gravimeter based on the principle of antimagnetic levitation. The gravimeter includes a low-frequency magnetic potential trap unit, a levitation oscillator unit, a displacement detection unit, and a cavity enclosure unit. The lens groups of the low-frequency magnetic potential trap unit, the levitation oscillator unit, and the displacement detection unit are all located in the cavity of the innermost insulated shell. This invention provides a measurement environment free from external influences for displacement detection of the levitation oscillator, counteracts adjustments to the vertical frequency in the antimagnetic levitation potential trap, and uses a photoelectric converter to measure voltage fluctuations caused by changes in laser intensity to reflect the motion of the object under test, achieving high-precision gravity measurement. The oscillator uses magnetic levitation and does not have mechanical contact with the environment, avoiding long-term irreversible deformation. It eliminates the need for bulky temperature control and magnetic shielding devices or other auxiliary equipment; therefore, the overall size of the gravimeter is small, easy to move, and inexpensive, facilitating widespread adoption.

A method according to one embodiment of the present disclosure for controlling an optical amplification device (10) of a polarization diversity configuration comprises: detecting a first optical intensity of first polarized waves from a first amplifier (102) which is disposed between a polarization splitter (121) and a polarization combiner (122); detecting a second optical intensity of second polarized waves from a second amplifier (103) which is disposed between the polarization splitter (121) and the polarization combiner (122); detecting a third optical intensity of the first polarized waves from the polarization combiner (122) in a state where the second polarized waves are not input to the polarization combiner (122); detecting a fourth optical intensity of the second polarized waves from the polarization combiner (122) in a state where the first polarized waves are not input to the polarization combiner (122); and acquiring loss of the first polarized waves from the first amplifier (102) to the polarization combiner (122) and loss of the second polarized waves from the second amplifier (103) to the polarization combiner (122) on the basis of the first optical intensity, the second optical intensity, the third optical intensity, and the fourth optical intensity.

This communication device serving as an aggregation station comprises: a signal processing unit that generates a main signal and a control signal; and a subcarrier multiplexing unit that arranges the main signal and the control signal in each of a first sideband and a second sideband with a carrier frequency as a reference, and generates an intensity-modulated optical signal including the control signal having opposite phases in the first sideband and the second sideband. This communication device serving as an extension station comprises: a photoelectric converter that converts, into an electrical signal, an intensity-modulated optical signal based on a main signal and a control signal arranged at the same frequency; a first filter that generates the main signal by passing, among the converted electrical signals, an electrical signal of a first frequency; a second filter that passes, among the converted electrical signals, an electrical signal of a second frequency; and a control signal generation unit that generates the control signal on the basis of the electrical signal of the first frequency and the electrical signal of the second frequency.

The present application relates to the technical field of elemental analysis detection, and particularly relates to an accurate non-calibration quantitative method based on automatic recognition and matching of different substrates, comprising: detection; acquiring actual fluorescence intensity and an actual spectrum diagram, and determining the type of main dark matter; determining the corresponding diagram of the current detection sample and selecting a corresponding non-calibration quantitative model; acquiring a simulation diagram; calculating the similarity of the simulation diagram and the actual spectrum diagram, if the similarity is greater than a similarity threshold value, outputting each content in the sample, if the similarity is less than or equal to the similarity threshold value, outputting new each element content, and re-performing full spectrum matching of the simulation diagram and the actual spectrum diagram until the matching result converges. By constructing a diagram library, the change trend of the actual measurement diagram and the simulation diagram is compared, so that the condition that the same matter is determined as different matters due to the pure comparison of the similarity is avoided, the error caused by the wrong model is avoided, and the accuracy of the non-calibration quantification is increased.

This invention relates to the field of current measurement technology and discloses a method and system for improving the accuracy of NV center current measurement in diamond. The method includes: applying an axial magnetic field outside the diamond sample; comparing the energy level difference between two characteristic states with the target spin; determining whether energy level anti-crossing exists based on the comparison result; determining the fluorescence intensity based on the energy level anti-crossing; determining a normalized fluorescence signal based on the initial fluorescence signal and the target fluorescence signal; determining the coupling relationship between the magnetic field and fluorescence intensity based on the fluorescence intensity, the normalized fluorescence signal, and the placement probability; applying a bias magnetic field opposite to the axial magnetic field based on the open-loop transfer function and the microwave frequency; modulating the measurement microwave frequency with a sine wave; and measuring the NV center current based on the Fourier coefficients, the adjusted signal-to-noise ratio, and the bias magnetic field. This invention improves the accuracy of current measurement.

The application discloses a kind of combustion reaction analysis laser-induced fluorescence background average absorbance determination method, it is related to combustion test and laser-induced fluorescence technical field, it can at least partly solve the technical problem of quantitative analysis of the propagation decay of laser-induced fluorescence signal in reaction gas in prior art.This application includes: constructing laser-induced fluorescence testing device, two cameras are located at the two sides of reaction cavity respectively;First measurement state is configured to make the distance of two cameras from reaction cavity present preset multiple relationship, synchronous acquisition fluorescence image and calculate first fluorescence intensity ratio;Synchronous acquisition fluorescence image and calculate second fluorescence intensity ratio;Based on the two fluorescence intensity ratio and the preset multiple relationship, calculate absorbance parameter;According to the absorbance parameter and fluorescence propagation path distance, calculate absorption rate.The application realizes laser-induced fluorescence signal absorption quantitative analysis, and provides key error analysis basis for combustion reaction kinetics research.

The invention discloses a titanium-doped zirconium MOF molecularly imprinted electrochemical luminescence sensor for high-sensitivity detection of HER2, and a preparation and detection method thereof, and belongs to the technical field of detection. A titanium-doped zirconium-based metal organic framework (Ti-Zr-TPE MOF) is dispensed on the surface of a working electrode to serve as a luminescent material, Ti-Zr-TPE realizes luminous intensity multiplication in an aggregation state compared with Zr-TPE by further enhancing an intra-molecular motion limited (RIM) mechanism, and a luminous body preparation process, co-reactant screening and detection parameters (such as potential scanning rate and pH value) are systematically optimized, so that the luminous intensity of Ti-Zr-TPE is improved. A set of stable Ti (at) Zr-TPE luminescent system is formed. Meanwhile, dopamine (DA) is used as a functional monomer, and HER2 is subjected to molecular imprinting through a molecular imprinting technology, so that the electrochemical luminescence sensor of a quenching system is constructed. The luminescent material based on the novel tetraphenyl ethylene (TPE) derivative has the advantages of high luminescent intensity, low background signal, high stability and specificity, simplicity and convenience in operation and the like, and has obvious advantages compared with a previously developed sensor for detecting HER2. According to the invention, quantitative detection of HER2 can be realized, and an innovative solution is provided for clinical early warning.

A planar waveguide amplifier includes a planar waveguide including a flat plate-like core; a first cladding provided on a first principal face of the core; and a second cladding provided on a second principal face of the core, and signal light and pumping light travel into the planar waveguide so that the signal light and the pumping light propagate inside the core in such a manner that optical paths of the signal light and the pumping light overlap each other, and in a zig-zag manner, and the core is an amplification medium containing a rare-earth element serving as an active ion of a three-level system, and absorbs the signal light on the basis of a reduction in intensity of the pumping light.

Optical intensity modulation apparatus including: an optical modulator operative to modulate a continuous-wave optical carrier signal at a carrier wavelength to generate at least one sideband on the optical carrier signal; a radio frequency, RF, signal generator operative to provide an RF drive signal to the optical modulator; a first optical waveguide grating having a central reflection wavelength corresponding to a sideband; and optical circulator configured to direct the optical carrier signal and the at least one sideband to the first optical waveguide grating and to direct a reflected optical signal from the first optical waveguide grating towards an output to form an output optical signal. The RF signal generator is operative to switch the drive signal on and off so as to form an intensity modulated output optical signal.

This invention relates to a phase-sensitive optical time-domain reflectometer based on orthogonal frequency division multiplexing (OFDM) pulse coding. A continuous laser beam is split into a local path and a probe path via an optical coupler. The probe path, driven by a radio frequency signal, generates multiple frequency-orthogonal intensity-coded pulse sequences through an optical intensity modulator. These sequences are arranged sequentially in time, possessing the same symbol information but different chip sequences. The Rayleigh backscattered light generated by the pulse sequences entering the sensing fiber under test undergoes coherent interference with the local light in an optical bridge and polarization diversity module. The signal acquisition circuit utilizes an unmatched filter to achieve pulse compression and Rayleigh scattering signal separation, and synthesizes the results of the pulse coding sequences at each frequency to obtain the strain signal. Compared with existing technologies, this invention achieves pulse compression by designing an unmatched filter, improving the signal-to-noise ratio while maintaining spatial resolution. Furthermore, by synthesizing the results of orthogonal frequency pulse sequences, coherent fading is eliminated, achieving fading-free, high signal-to-noise ratio strain measurement.

This invention relates to the field of lighting design technology, and in particular to a method, apparatus, equipment, and storage medium for energy-saving design of three-dimensional lighting. It constructs a digital twin model using spatial structure data and surface optical attribute data of a target scene. Target and constraint templates are matched according to scene type to meet complex lighting needs across multiple scenes, improving applicability. A multi-objective optimization model is constructed based on the digital twin model and target and constraint templates to optimize energy-saving solutions, minimizing energy consumption while ensuring light intensity, light quality, and light cycle. Customized optoelectronic device processing instructions are generated based on the optimal energy-saving solution, shortening the customization cycle. The actual illumination data of the target scene is compared with the simulation predictions of the digital twin model. The digital twin model is calibrated based on the comparison discrepancies. The three-dimensional lighting system undergoes full lifecycle operation and maintenance, achieving closed-loop management of the entire process from perception, design optimization, deployment, calibration to operation and maintenance, thus improving the level of intelligence.

This invention relates to an interferometric phase demodulation method and system based on a high-reflection-order Fabry-Perot (FP) optical microphone. The system includes a broadband light source, a beam splitting module, an optical path guiding module, an FP optical microphone, an optical path compensation module, an optical intensity adjustment module, a 3x3 fiber coupler, a photoelectric detection module, and a signal demodulation module. This invention suppresses multi-beam interference within the microcavity through cavity length matching; simultaneously, it employs co-source beam splitting and utilizes the optical path compensation module to cancel the physical path difference between the sensing arm and the reference arm. Furthermore, it selectively matches high-order return light using the optical intensity adjustment module, followed by demodulation. This effectively suppresses reflection interference and achieves common-mode noise cancellation, significantly improving the sensitivity, anti-interference capability, and measurement dynamic range of the high-order FP sensor. It is suitable for high-precision monitoring of weak acoustic waves in complex and harsh environments such as transformer oil.

An optical fiber sensing device of the present disclosure includes: an optical fiber sensor system including a plurality of sensor units having different propagation delay times; a first light source for outputting an incident light to the optical fiber sensor system; a second light source for outputting a local light for combining with a transmitted light through the optical fiber sensor system; and a signal processing unit for detecting a change in an optical fiber using a received light signal I(t) obtained by combining the transmitted light and the local light, and, given that τi is an inter-optical-path propagation delay time difference at an i-th sensor unit of the sensor units, a change at the i-th sensor unit is derived using an autocorrelation between an optical intensity I(t) at the sensor unit and a signal I(t+τi) obtained by shifting the optical intensity I(t) by a time τi.

This invention proposes a field recovery-assisted iterative nonlinear channel equalization method for use in intensity modulation direct detection (IM / DD) fiber optic transmission systems. The method cascades the Gerchberg-Saxton (GS) iterative algorithm with a Volterra decision feedback equalizer (VDFE) in a digital receiver, forming a GS-VDFE equalizer. The GS iterative module proceeds first, iteratively updating the optical field by inferring the phase from the optical intensity signal, initially compensating for fiber dispersion and increasing the power at fading frequencies. The VDFE module follows, employing a simplified structure of a second-order feedforward Volterra and a first-order feedback DFE, to perform nonlinear equalization on the GS output signal to eliminate residual distortion. GS preprocessing eliminates the need for high-order nonlinear compensation in the VDFE, reducing equalizer complexity and noise sensitivity. The VDFE handles residual compensation, reducing the number of GS iterations to below 20, thus lowering processing latency. This invention effectively recovers high-speed digital signals in high-dispersion channels and mitigates spectral fading and self-reflection interference without altering the existing system structure.