27 results about "Optical microcavity" patented technology

This application provides a quantum optical microcavity device modified with fluorinated organophosphonic acid and its fabrication method, relating to the fields of organic chemistry and optical engineering. The quantum optical microcavity device includes a microcavity body and a fluorinated organophosphonic acid monolayer attached to the surface of the microcavity body. A hydrophobic fluorinated organophosphonic acid monolayer is formed on the surface of the microcavity body through a chemical reaction between a mixed solution containing fluorinated organophosphonic acid molecules and the surface of the microcavity body. Since the active head groups of the fluorinated organophosphonic acid can form chemical bonds with –OH and Si–O–Si on the surface of silica through reaction, the adsorption of water molecules from the air onto the –OH and Si–O–Si on the surface of the silica microcavity body can be effectively suppressed, thus improving the Q-value stability of the whispering-gallery mode quantum optical microcavity device.

The present application relates to fine particle sensing technology, and particularly relates to a microcavity vibration spectrum system and method for measuring inherent vibration spectrum of fine particles. The microcavity vibration spectrum system comprises an inherent vibration excitation light path unit and a microcavity detection light path unit; the inherent vibration excitation light path unit is sequentially provided with a pulsed light source, a vibrating mirror, an objective lens and a particle to be measured; and the microcavity detection light path unit is sequentially provided with a tunable laser light source, an adjustable attenuator, a polarization controller, a coupling optical waveguide, an optical microcavity, a photodetector and an oscilloscope. The present application can realize precise measurement of sound waves caused by particle vibration of mesoscale particles and biological particles with inherent vibration frequency in the sub-megahertz-gigahertz frequency range.

Provided in the present invention is an all-optical nonlinear activator based on dual-light-beam cavity field modulation, which can be applied to the technical field of optical computing. The activator comprises: an input end, an optical microcavity and an output end, wherein the input end is used for providing an input light beam; the optical microcavity is used for generating resonance, so as to excite and enhance an optical nonlinear effect; and the output end is used for outputting a nonlinearly modulated optical signal. Nonlinear modulation is performed on an optical field in the optical microcavity or on a transmission spectrum of the optical field in the optical microcavity by means of two coherent light beams having a phase difference, thereby forming nonlinear mapping between the light intensity of input light and the light intensity of output light, i.e., an all‑optical self-modulation process. An effective nonlinear operator is provided for all-optical computing, thereby accelerating the convergence of network training and inference, and improving the recognition accuracy of a model in different applications. Further provided in the present invention is an implementation method for the all-optical nonlinear activator based on dual-light-beam cavity field modulation.

This invention discloses a silicon photonic integrated package and method with a room-temperature quantum coherent control structure, comprising: a photoelectric composite interposer layer having vertical photonic vias and electrical vias; four heterogeneous waveguide structures within the photonic vias for vertical optical signal transmission; copper pillars within the electrical vias for electrical interconnection; a first microchannel on the back of the interposer layer; a quantum material heterogeneous integration module bonded to a set of copper pillars, integrating a diamond thin film containing NV color centers, and containing an optical microcavity, photonic crystal waveguide, and microlens; a room-temperature quantum control circuit bonded and interconnected to another set of copper pillars; an optical engine module, located above the control circuit and aligned and coupled to the waveguide interposer layer; and each functional layer integrated and packaged from bottom to top on a carrier board, forming a system-level package with three-dimensional electrical, optical, and thermal interconnection and room-temperature coherent quantum state manipulation capabilities. This invention solves technical challenges such as heterogeneous bonding of silicon photonics and quantum materials, thermal stress mismatch, and photoelectric crosstalk.

This invention relates to the field of electroluminescence technology and discloses an organic electroluminescent device and its application. The organic electroluminescent device includes, from bottom to top, an anode layer, a first coordination-activated electron transport layer, an interface modification layer, a hole injection layer, a hole transport layer, an electron blocking layer, a light-emitting layer, a hole blocking layer, a second coordination-activated electron transport layer, an electron injection layer, and a cathode layer. The coordination-activated electron transport layer is composed of a non-alkali metal n-type dopant and an organic electron transport material, wherein the organic electron transport material is composed of a nitrogen-containing heterocyclic chelate ligand without lone pair electron-emitting unit modification. The coordination-activated electron transport layer of this invention possesses high conductivity and the function of controlling the optical microcavity of the device. During optical microcavity control, it does not significantly increase the device driving voltage, avoids pixel crosstalk caused by lateral current leakage, and works synergistically with the interface modification layer and the hole injection layer to solve the heterojunction interface energy level mismatch, thereby improving device lifetime and voltage stability.

The invention provides an optical microcavity dispersion measurement method based on dispersion linetype real-time calibration, which is applied to the technical field of microcavity dispersion measurement, and comprises the following steps: converting the position extraction of an optical sideband into the position extraction of a dispersion linetype, and demodulating the optical sideband through a frequency mixer to obtain a sideband harmonic peak of a specific dispersion linetype; adjusting the phase difference between a modulation signal and a demodulation signal of the high-stability radio frequency source, identifying the position of a dispersion line type sideband harmonic peak, and extracting the frequency interval of the sideband harmonic peaks on the two sides of each resonance mode; dynamically calibrating the optical fiber Mach-Zehnder interferometer based on the number of sinusoidal signal cycles in the frequency interval of the dispersion line type sideband resonance peaks on the two sides of each resonance mode to obtain a calibrated Mach-Zehnder interferometer; and generating a dispersion measurement result of the optical microcavity according to the calibrated Mach-Zehnder interferometer interference signal. According to the invention, the dispersion measurement precision and the automation level can be improved.

The application belongs to the technical field of light emitting diodes, and discloses a high-polarization circularly polarized light emitting diode, a preparation method and application thereof. The circularly polarized light emitting diode comprises, from bottom to top, a bottom reflective electrode arranged on the surface of a first substrate, a light emitting unit, a top transparent electrode, and a Bragg reflection layer. The material for preparing the Bragg reflection layer is cholesteric liquid crystal. The bottom reflective electrode and the Bragg reflection layer form a Bragg-mirror reflection microcavity structure, and the Bragg reflection layer selectively reflects and outputs circularly polarized light with the same chirality. The Bragg-mirror reflection microcavity is used for chirality selection, and the microcavity structure reverses the optical rotation of light with non-target optical rotation, thereby breaking through the problem of serious light loss of a traditional external polarizer. The microcavity structure utilizes the Bragg-mirror reflection optical microcavity polarization regulation mechanism, so that the light emitting diode does not depend on the intrinsic chirality, spin polarization or special orientation of the light emitting material, and can be applied to various light emitting systems.

This invention discloses an optical fiber pressure sensor, comprising a single-mode optical fiber, a microcavity device, and a metal thin film. The microcavity device has an optical microcavity and a first port and a second port respectively connected to both ends of the optical microcavity. The first port of the microcavity device is connected to one end face of the single-mode optical fiber, and the second port of the microcavity device is connected to the metal thin film. A metal bonding layer is formed on the second port of the microcavity device by vapor deposition. The metal thin film is welded and fixed to the metal bonding layer of the microcavity device and suspended in front of the optical microcavity. This optical fiber pressure sensor can improve the bonding force between the metal thin film and the microcavity device. This invention also provides a method for fabricating the above-mentioned optical fiber pressure sensor.

The present application relates to a kind of protein aggregation state detection method and its detection device.The protein aggregation state detection method described in the present application includes: the solution to be detected is mixed with optical microcavity, obtains the second original WGM spectrum data after the solution to be detected and optical microcavity effect;The optical bar code of the second original WGM spectrum data is obtained;The optical bar code is input into detection classification model, and the protein aggregate class is obtained;Wherein, the detection classification model includes deep learning classification model.The detection method of the present application can automatically, efficiently extract deep features from complex optical bar code, and can learn the nonlinear discrimination boundary between different protein aggregation states, overcome the limitations of traditional methods relying on artificial feature extraction and simple linear judgment, greatly improve the accuracy and robustness of protein aggregation state classification.

This invention discloses a functional polymer / liquid crystal composite semiconductor micro / nano laser and its fabrication method. This laser utilizes the Rayleigh instability of the cylindrical liquid interface to form a functional polymer / liquid crystal spindle structure with a specific morphology on the surface of semiconductor micro / nanowires. This constructs a composite optical microcavity that enhances optical field confinement and suppresses radiation loss, thereby improving the quality factor of the resonant cavity, compressing the resonant linewidth, and lowering the laser threshold. Furthermore, by controlling the size parameters of the functional polymer / liquid crystal spindle and its coverage position on the semiconductor micro / nanowire surface, effective control of the resonant mode is achieved. Based on the relevant properties of the semiconductor material and the polymer / liquid crystal cladding material, this invention exhibits excellent photostability under pulsed light pumping and long-term detection conditions, significantly enhancing the device's specific recognition capability of analyte molecules and its high-sensitivity sensing performance.

An optomechanical ultrasound detector includes: a micromirror substrate; a mechanical resonator that receives ultrasound waves, oscillates at resonator frequency fr, changes cavity length Lc, and produces intra-cavity light; and an optical microcavity between the micromirror substrate and the mechanical resonator with cavity length Lc and cavity resonance frequency fc formed by the mechanical resonator and the micromirror substrate, such that the micromirror substrate produces cavity output light from the intra-cavity light, wherein the cavity output light optically encodes information about the ultrasound waves received by the mechanical resonator.

This application relates to an asymmetric whispering-gallery mode photoelectric detection system. The system includes: a probe light source capable of emitting probe light; a microsphere whispering-gallery mode resonator, which has an asymmetric optical microcavity body, within which a microsphere for exciting a whispering-gallery mode is coupled, configured to couple the probe light to the microsphere, causing the probe light to resonate in a whispering-gallery mode within the microsphere before being output; and a spectral receiving device configured to detect the output light of the microsphere whispering-gallery mode resonator per unit time. The system of this application can realize a high-precision multi-parameter sensor, achieving microsphere resonant excitation under the Fabry-Perot optical micro total internal reflection waveguide mechanism through evanescent field coupling between the microsphere and the cavity wall of the optical microcavity. The device has a 1.068 × 10⁻⁶ m² / m² diameter. 5 It has a high Q value and features a compact structure, high durability and stable operation, simple manufacturing process, convenient packaging, easy operation and low cost.

The application relates to a single-mode annular optical microcavity structure, comprising a substrate and single elements arranged on the surface of the substrate, the single elements are arranged in multiple, and the multiple single elements are arranged in sequence along the circumference to form an annular optical microcavity for screening single optical mode resonance. The application enables specific mode resonance meeting specific phase matching conditions to be transmitted with low loss and form resonance, and the remaining mode resonance not meeting the matching conditions is effectively inhibited, so that the screening of single optical mode resonance by the annular optical microcavity in the single-mode annular optical microcavity structure is realized. The single-mode characteristic is inherent to the single-mode annular optical microcavity structure and cannot be easily changed by external environment, and has extremely high stability. The single-mode annular optical microcavity structure can also screen specific single-mode resonance without external filter devices, significantly reduces the physical footprint of the integrated device, and greatly improves the integration density of the optical path on the device.

This invention discloses a multimodal integrated optical microcavity, belonging to the field of integrated photonic device technology. The multimodal integrated optical microcavity includes a first microcavity structure and a second microcavity structure coupled in a vertical direction. The first and second microcavity structures are made of different materials, and by adjusting the waveguide thickness and width, the two microcavities have approximately the same free spectral range within a preset operating wavelength band. Because the two materials have different thermo-optic coefficients, differential resonant frequency shifts can be naturally generated during thermal tuning of the bilayer microcavity. Combined with the vernier coupling effect between the microcavities, a Moore acceleration effect is formed, thereby achieving a wide range of adjustment of the microcavity's dispersion characteristics. By controlling the thermal excitation conditions, switching between normal dispersion and anomalous dispersion can be achieved, enabling a single device to support multiple optical operating modes. This invention has a simple structure, stable control, and strong process compatibility, making it suitable for reconfigurable integrated photonic systems.

This application provides an angular velocity detection system and method based on weak measurement, which can be applied to the fields of quantum sensing technology and optical gyroscope technology. The system includes: a laser emitting initial light; a pre-selection module adjusting the phase of two parts of the initial light; a first optical resonant cavity transmitting the first path light along a counterclockwise path; a second optical resonant cavity transmitting the second path light along a clockwise path; a post-selection module coupling the first path light and the first part of the second path light to obtain a first interference light; a detection module detecting the first interference light to obtain a first light intensity; a processor obtaining a linear coefficient based on a predetermined phase, the initial light intensity of the initial light, and a transmission coefficient; and obtaining the rotational angular velocity based on the first light intensity, the linear coefficient, and the predetermined phase. This system uses an optical microcavity as the sensitive unit of the gyroscope, enhancing the sensing performance of the integrated optical gyroscope through weak measurement technology and improving the detection accuracy of the rotational angular velocity.

This application provides a display panel and a display device. The display panel includes: a substrate, a first electrode layer, a pixel definition layer, and a light-emitting functional layer. The first electrode layer is disposed on one side of the substrate and includes a plurality of first electrodes, including a light-reflecting electrode and a light-transmitting electrode. The pixel definition layer is disposed on one side of the substrate and includes a pixel defining portion and a pixel opening. Each first electrode is exposed through the pixel opening, which includes a first pixel opening and a second pixel opening. The light-emitting functional layer includes light-emitting structures located in the first pixel opening and the second pixel opening, respectively. The first electrode includes a first sub-electrode corresponding to the first pixel opening and a second sub-electrode corresponding to the second pixel opening. The light-reflecting electrode can reflect the light emitted by the light-emitting structure and cooperate with the cathode to form an optical microcavity structure, thereby improving the brightness and performance of the display panel. The equal thickness of the light-transmitting electrode film of the first sub-electrode and the second sub-electrode simplifies the manufacturing process.

This invention belongs to the field of optical sensing technology and discloses an optical sensor based on a microcavity laser microwave source for temperature measurement. Specifically, the bottom of a rare-earth ion-doped optical microcavity is placed under a first temperature condition. A dual-mode laser is generated by pumping with a pump source, and the microwave signal frequency is obtained by further beat frequency analysis. A second temperature condition is used to obtain an updated microwave signal frequency. A temperature-microwave frequency standard curve is obtained through linear fitting. Under the temperature condition to be measured, a new microwave signal frequency corresponding to the temperature to be measured is obtained, and the temperature value corresponding to the temperature condition to be measured is obtained by comparing it with the standard curve. This invention applies different temperatures to the bottom of the rare-earth ion-doped optical microcavity. By utilizing the thermal gradient effect in the microcavity, the wavelength shift of the dual-mode laser varies significantly with temperature. Therefore, the microwave signal frequency obtained by beat frequency analysis also changes with temperature, thereby achieving high-resolution temperature measurement.

The application discloses a high-sensitivity multi-frequency sound sensor based on a high-quality-factor gradually-changing hollow optical microcavity and relates to the technical field of optical fiber sensing technology, which comprises a tunable laser, a coupling unit and a photoelectric detector which are connected in sequence through an optical fiber; the coupling unit comprises a tapered optical fiber and a gradually-changing hollow optical microcavity, and the tapered optical fiber is arranged in vertical contact with the gradually-changing hollow optical microcavity to realize resonance coupling. The preparation process of the gradually-changing hollow optical microcavity comprises the following steps: a quartz glass capillary tube with a target length is cut, a surface coating layer is removed and the quartz glass capillary tube is cleaned, and then one end of the quartz glass capillary tube is sealed; the quartz glass capillary tube is fixed on a tapering platform, and pre-inflation is performed from the unsealed end of the quartz glass capillary tube to make the air pressure of the inner wall of the quartz glass capillary tube uniform and unchangeable; the quartz glass capillary tube is subjected to fusion tapering to form the gradually-changing hollow optical microcavity with a pre-deformation zone and a linear stretching zone. The application can realize wide-band, high-sensitivity and multi-frequency sound signal sensing and detection.

This invention relates to a voiceprint recognition method and system based on a whispering-gallery optical microcavity. The method includes: acquiring an external human voice to be identified through a whispering-gallery optical microcavity to obtain a sound wave signal; converting the sound wave signal into an initial electrical signal; using preset audio software to reconstruct the human voice from the initial electrical signal to obtain an audio signal, and performing preprocessing; extracting features from the preprocessed audio signal to obtain voiceprint features; inputting the voiceprint features into a preset voiceprint model for matching, and outputting a human voice recognition result.

The present application relates to a kind of self-interference optical micro resonator and its regulation method, wherein, self-interference optical micro resonator includes, microcavity structure, by the waveguide of head-to-tail connection is constituted;Bus waveguide, with the microcavity structure is coupled 2n+1 times and is constituted 2n+1 couplers, and the optical path of adjacent two couplers on the waveguide of the microcavity structure is different from the optical path of adjacent two couplers on the bus waveguide.The present application can regulate the resonant transmittance of optical micro resonator without changing the absolute resonant frequency of optical micro resonator.

This invention discloses a dual-resonance composite nanoantenna structure for enhancing the luminescence of monolayer molybdenum disulfide and its fabrication method. The structure includes an antenna substrate, a base assembly disposed on the surface of the antenna substrate, and multiple dual-resonance nanoantenna mechanisms disposed on the surface of the base assembly. An alumina top layer is disposed between the multiple dual-resonance nanoantenna mechanisms and the base assembly. This invention utilizes the strong localized surface plasmon hotspot effect generated by the nano-gap between the top-layer metal dimers to significantly improve the absorption efficiency and exciton generation rate of the intermediate molybdenum disulfide layer for incident light. Simultaneously, the high-Q Mie resonance supported by the bottom dielectric nanodisk serves as an optical microcavity, effectively suppressing non-radiative transitions and enhancing far-field radiation extraction capability. The synergistic effect of these two elements achieves an order-of-magnitude increase in the photoluminescence intensity of molybdenum disulfide.

The application discloses a kind of microcavity optical comb device and driving method based on double-ring coupling structure, the device includes pump laser, main optical microcavity, auxiliary optical microcavity and tuning unit;Main optical microcavity generates dissipative kerr soliton optical frequency comb under the excitation of pump light, auxiliary optical microcavity is coupled with main optical microcavity, and is provided with periodic nanostructure thereon, backscattering is generated to pump light with frequency in the resonance bandwidth of pump mode, so that pump laser realizes self-injection locking;Coupling between auxiliary optical microcavity and main optical microcavity induces mode splitting at pump mode, and transmission of pump light from main optical microcavity is inhibited;Tuning unit is arranged on auxiliary optical microcavity, for adjusting the resonance frequency of auxiliary optical microcavity and the degree of mode splitting.The application can realize the robustness of self-injection locking and the high conversion efficiency of soliton optical comb simultaneously without damaging the high Q value characteristics of main microcavity.

An optical waveguide microcavity and a coupling adjustment device therefor. The optical waveguide microcavity comprises a substrate (10), an optical waveguide (20), an optical microcavity (30), and a coupling adjustment structure (40). The optical waveguide (20) is located on one side of the substrate (10). The optical microcavity (30) is located on the side of the substrate (10) where the optical waveguide (20) is arranged, and is located in the same layer as the optical waveguide (20). The coupling adjustment structure (40) comprises a phase change layer (41) located on the side of the optical waveguide (20) away from the substrate (10), and a heating layer (42) located on the side of the phase change layer (41) away from the substrate (10), wherein the heating layer (42) is configured to adjust the temperature of the phase change layer (41). An orthographic projection of the phase change layer (41) on the substrate (10) overlaps with an orthographic projection of a coupling region of the optical waveguide (20) and / or a coupling region of the optical microcavity (30) on the substrate (10).

The application discloses a light absorption enhanced organic photoelectric detector structure and belongs to the field of semiconductor photoelectric devices. The light absorption enhanced organic photoelectric detector structure comprises an upper MIM super surface structure and a lower plasmonic hybrid medium optical microcavity structure. The MIM super surface structure serves as a reflection layer of the whole light absorption enhanced organic photoelectric detector structure to generate local surface plasmon resonance and realize filtering or reflecting effect on incident light. The plasmonic hybrid medium optical microcavity structure can enhance the residence time or optical path of light in the organic active layer, thereby forcing the organic semiconductor to more effectively absorb the originally escaped photons. The structure of the application is helpful to improve the light absorption rate of the organic semi-active layer, solves the weak light absorption characteristic of the organic semiconductor material itself, and improves the performance of the photoelectric detector made of the organic semiconductor material.

A quantum dot light-emitting diode, a display substrate and a manufacturing method therefor, and a display apparatus. The quantum dot light-emitting diode comprises: a first electrode (10), a second electrode (12), and an electron transport layer (20) and a quantum dot light-emitting layer (30) which are provided between the first electrode (10) and the second electrode (12), the electron transport layer (20) being located on the side of the quantum dot light-emitting layer (30) close to the first electrode (10); the electron transport layer (20) is configured to regulate the length of an optical microcavity between the first electrode (10) and the second electrode (12). The material of the electron transport layer (20) comprises patterned inorganic nanoparticles, the patterned inorganic nanoparticles being obtained by performing a photolithography process on inorganic nanoparticles having photosensitive ligands, and, before and after illumination, the photosensitive ligands exhibiting different solubilities in a developing solution.

The present application relates to the field of optical microcavity high sensitivity sensing technology, and particularly relates to an optical microcavity high sensitivity sensing system and method based on an optical mechanical frequency comb, which comprises a laser, a phase modulator, a sensitive unit, a photodetector, an oscilloscope, a signal collector, an upper computer, a frequency locking module and a signal generator. The sensitive unit comprises a tapered optical fiber and a base, a piezoelectric ceramic driver is fixed to the lower surface of the base, a support is fixed to the upper surface of the base, an optical microcavity is fixed to the upper surface of the support, the optical microcavity is coupled with the tapered region of the tapered optical fiber, the exit end of the laser is connected with the first end of the tapered optical fiber through the phase modulator, and the tail end of the tapered optical fiber is connected with the entrance end of the photodetector. The present application solves the problem that the signal-to-noise ratio and sensitivity of the existing optical microcavity high sensitivity sensing system are difficult to be further improved, and is suitable for the fields of biomedical imaging, geological exploration, inertial navigation, national defense security and the like.