1035 results about "Micro cavities" patented technology

The invention discloses a medium-wave infrared pixel-level spectral polarization optical system, which belongs to the field of lenses and comprises a refraction lens group, a cold diaphragm, a super-structure micro-lens array and a medium-wave infrared quantum dot detector which are sequentially arranged along an incident light path, the super-structure micro-lens array comprises an object side micro-structure and an image side micro-structure; the image side microstructure is used for realizing focusing; the object side microstructure comprises a plurality of object side units which are periodically distributed; each object side unit comprises a polarization metal wire grating structure and a plurality of metasurface-microcavity structures; the polarization metal wire grating structure is formed by arranging metal wire gratings according to different directions so as to realize detection of different orthogonal polarization states; the metasurface-microcavity structure comprises a middle dielectric layer, distributed Bragg gratings located on the two sides of the middle dielectric layer and a metasurface columnar structure unit array embedded into the middle dielectric layer, and the metasurface columnar structure unit array is used for achieving filtering of light of different wave bands. The system has the advantages of good imaging quality, small size, real-time imaging and the like.

The invention relates to a wide-temperature high-precision optical acceleration sensitive chip and sensor based on a microcavity interferometer principle and a manufacturing method thereof, the wide-temperature high-precision optical acceleration sensitive chip comprises a first substrate, a second substrate and a third substrate, an optical fiber mounting seat and a light through hole are formed on the first substrate, a beam structure and an inertial mass block are processed on the second substrate, and the beam structure is arranged on the third substrate. The first substrate, the second substrate and the third substrate are all made of double-polished super-flat silicon wafers, a single-mode optical fiber assembly is fixed to the optical fiber installation base, the end face of the single-mode optical fiber assembly is subjected to precise grinding and is perpendicular to the axial direction of an optical fiber core, and a first cavity mirror is formed by means of the end face of the side, facing the light through hole, of the inertial mass block. A second cavity mirror is formed on the end face of the single-mode optical fiber assembly, the first cavity mirror and the second cavity mirror form an F-P interference cavity, and the first substrate, the second substrate and the third substrate are connected through the silicon-silicon bonding technology.

The invention discloses a vacuum microcavity interferometer chip, a manufacturing method and a low-drift optical pressure sensor, a film island structure is formed on the upper surface of a first substrate, and the film island structure comprises a protruding part and a pressure sensitive film surrounding the protruding part; a first side wall part, a getter cavity, a second side wall part and an F-P interference cavity located in the center are sequentially arranged on the lower surface of the first substrate in the radial direction, a first reflecting surface is deposited on the lower surface of the first substrate in the F-P interference cavity, and a second reflecting surface is deposited on the upper surface of the second substrate in the F-P interference cavity. A first optical antireflection film is deposited on the surface of the protruding part, and the first optical antireflection film, the protruding part, the pressure sensitive film, the first reflecting surface and the second reflecting surface have the same center; the filter further comprises a vent hole, and the vent hole is formed in the second side wall part and used for communicating the getter cavity and the F-P interference cavity.

The invention discloses an optical fiber silicon-based microstructure underwater acoustic sensor which is a non-intrinsic F-P air microcavity probe with optical signal interference formed by an optical fiber end face and a silicon-based thin film, the characteristic that the silicon-based thin film is sensitive to sound pressure signals is used for picking up sound pressure changes in a liquid sound field environment, the sound pressure changes are converted into the variable quantity of an optical signal interference phase, and the optical fiber silicon-based microstructure underwater acoustic sensor is obtained. Reducing a sound pressure signal in the liquid sound field through a detection demodulation algorithm; the microcavity probe is packaged by using an organic material thin shell structure, so that the hydrostatic pressure resistance of the underwater acoustic sensor is improved to adapt to application in a deep water environment; the optical fiber silicon-based microstructure underwater acoustic sensor comprises an acoustic sensing silicon microstructure, a microstructure sensing probe and a sensor pressure-resistant structure, according to the acoustic characteristic design of the acoustic sensing silicon microstructure, silicon oxide / silicon nitride and other materials are used as sensing materials, and membrane external stress recovery is achieved through internal stress residues. The method is easy to implement in design process, flexible in application and high in environmental adaptability, and can be applied to noise monitoring and target detection in various complex scenes.

The invention discloses a light-induced thermoelastic spectrum trace gas detection device and method based on an echo wall mode microcavity. The device comprises a first signal generator, a lock-in amplifier, a laser device control unit, a first laser device, a laser beam collimation unit, a gas chamber, a focusing lens, a tuning fork, an echo wall mode microcavity, a coupling medium, a second laser device, a second signal generator, a photoelectric detector and a computer, the emergent laser is focused to the interdigital root of the tuning fork through the focusing lens; laser output by the second laser device is transmitted by the coupling medium and coupled into the echo wall mode microcavity in an evanescent wave form, the echo wall mode microcavity deforms, the resonant wavelength of the echo wall mode microcavity in the transmitted spectrum moves, and the concentration of the gas to be detected in the gas chamber is inverted according to the displacement of the resonant wavelength. The problems that a quartz tuning fork is large in thermal noise and weak current signals are easily interfered by an electromagnetic field are solved.

The invention relates to an integrated microcavity optical comb repetition frequency and optical frequency locking device and method, and belongs to the technical field of integrated microcavity optical combs. The locking device comprises a pumping module, a power amplification module, a phase modulation module, an electro-optic driving module, an acousto-optic modulation module, an acousto-optic driving module, a band-pass filtering module, a micro-ring resonant cavity and a beam splitting module; the device comprises a soliton detection module, a control module, a repetition frequency detection module, a first feedback control module, an acetylene frequency stabilized laser, a beat frequency module, an optical frequency beat frequency detection module and a second feedback control module. The locking device can achieve full frequency locking of the microcavity optical comb, has the advantages of being high in frequency stability, wide in servo bandwidth, simple and compact in structure, tight in locking, low in noise, high in reliability and low in cost, and can provide a powerful tool for the field of precision measurement.

The invention discloses a high-reliability pressure-isolating and pressure-picking type optical fiber pressure sensor and a measuring method.The high-reliability pressure-isolating and pressure-picking type optical fiber pressure sensor comprises a sensor component, a first optical fiber, a second optical fiber, a temperature compensation boss and a diaphragm, the first optical fiber, the second optical fiber, the temperature compensation boss and the diaphragm are located in the sensor component, and the sensor component comprises a cylinder, a fixing piece and a sealing component and forms a pressure-isolating cavity; the first optical fiber is arranged in a temperature compensation boss connected with the fixing piece, the second optical fiber is connected with the fixing piece, the second optical fiber and the cylinder body form a synchronous microcavity temperature compensation structure, the diaphragm is arranged in the cylinder body, the diaphragm and the first optical fiber form a Fabry-Perot cavity, and the sensor component and the temperature compensation boss form a temperature self-compensation structure; according to the sensor, single pressure sensing of the diaphragm is achieved through the design of the pressure isolation cavity, the influence of temperature on the cavity length is greatly reduced through the temperature self-compensation structure and the synchronous microcavity temperature compensation structure, different measurement ranges are met by reasonably designing size parameters of the diaphragm, the creep deformation problem of the diaphragm is restrained through the diaphragm with the homogenized stress, and the measurement accuracy is improved. And the reliability and the stability of the sensor are improved.

The invention discloses an alanine aminotransferase detection device and method based on a liquid crystal microcavity array, and belongs to the field of optical sensing. The device comprises a functional liquid crystal microcavity array, an excitation optical fiber and a collection optical fiber, the microcavity array is composed of liquid crystal microcavities doped with fluorescent dye and stearic acid, and the multiple microcavities are independently distributed and serve as optical sensing units; the excitation optical fiber is used for synchronously exciting the microcavity to generate an echo wall mode, and the acquisition optical fiber acquires resonance spectrum signals of each channel in real time; the functionalized liquid crystal microcavity is converted into a bipolar configuration from a radial configuration in an enzymatic reaction, echo wall mode spectrum red shift is caused, spectrum shift time is in negative correlation with enzyme concentration, and dual-channel detection is realized by matching with conversion time of a polarized light pattern. According to the detection structure based on the liquid crystal microcavity array provided by the invention, high-flux, real-time and label-free rapid detection on the concentration of alanine aminotransferase can be realized.

The invention provides a superfine nano phosphorus-carbon negative electrode material prepared based on in-situ high-temperature phase change in a confinement microcavity and a preparation method of the superfine nano phosphorus-carbon negative electrode material. The method aims to solve the problems of large volume expansion, poor conductivity, poor cycling stability and the like when phosphorus is used as a negative electrode material of an alkali metal ion battery. By constructing a confinement microcavity on the surface of a porous conductive material and combining a transient high-temperature phase change technology, phosphorus can be uniformly distributed and nanocrystallized. The method comprises the following steps: mixing phosphorus and a conductive porous material in a solvent, sanding, forming solid particles through reforming granulation, and constructing the confinement microcavity through coating treatment. Transient heating is carried out in a high-temperature device, so that the phosphorus source is quickly sublimated and uniformly distributed, finally, heat-preservation conversion is carried out in a sealed container, and the stability of the material is improved. The method not only improves the utilization efficiency of phosphorus and the conductivity of the material, but also enhances the cycle life and energy density of the battery, and has the advantages of simplifying the process flow and reducing the production cost.

The invention discloses a full-locking integrated microcavity optical comb based on coherent population trapping spectral lines, and belongs to the technical field of integrated microcavity optical combs. The full-locking integrated micro-cavity optical comb comprises a laser generation module, a frequency reference subsystem and a micro-cavity optical comb system. The laser generation module is used for generating two paths of laser, the frequency reference subsystem modulates one path of laser, a modulated optical signal is emitted into the atomic gas chamber system, and after transmission light is demodulated and subjected to phase-locked amplification processing, an optical frequency signal and a microwave signal which are locked to an atomic spectral line are obtained; and the optical frequency signal is fed back to the laser generating module to realize optical frequency locking. And the microcavity optical comb system adopts a microwave signal generated by the frequency reference subsystem as a frequency reference, and modulates the other path of laser to serve as pump light to enter the optical microcavity, so that optical comb output of a soliton state in the optical microcavity is realized. According to the invention, a single quantum system is taken as a reference, the problem of full locking of the micro-cavity optical frequency comb is effectively solved, and the system integration degree is relatively high.

The present disclosure provides an organic light-emitting diode, a display panel and a display device, relating to the field of display technologies. The organic light-emitting diode includes a first electrode, at least two emission layers, an optical modulation layer, and a second electrode. A thickness of the optical modulation layer has a relatively bigger range. Therefore, in the case that the thicknesses of other film layers between the first electrode and the second electrode vary, an optical modulation layer having a different thickness can be provided to adjust the microcavity length of the organic light-emitting diode, thereby ensuring the optical performance of the organic light-emitting diode and the display effect of the display panel.

The invention relates to a vacuum microcavity interferometer chip, a manufacturing method and a wide-range optical pressure sensor. Comprising a first substrate and a second substrate, the second substrate and the first substrate are bonded into a whole, a pressure sensitive film is manufactured on the first substrate, a first reflecting surface is deposited on the pressure sensitive film, and a second reflecting surface corresponding to the first reflecting surface is deposited on the second substrate. After the two substrates are bonded, the first reflecting surface and the second reflecting surface form an F-P optical interference cavity, at least one getter cavity is arranged on the first substrate and / or the second substrate, a getter film is arranged on the surface of the getter cavity, and the getter cavity and the F-P optical interference cavity are separated and connected through an air channel, so that the size of the air channel can be made to be very small, and the size of the getter cavity is smaller than that of the F-P optical interference cavity. A small amount of particles generated after the getter is activated are prevented from polluting an optical film to cause device failure; the whole sensor is of a sealed structure and is not provided with a structure externally connected with the chip, so that the overall airtightness of the chip is ensured, and the vacuum degree requirement of subsequent shell packaging is reduced.

The invention discloses a low-repetition-frequency spiral microcavity structure and a design method, and belongs to the field of silicon-based integrated photon chips. The low-repetition-frequency spiral microcavity structure comprises a first spiral bent waveguide, a second spiral bent waveguide, an internal connection bent waveguide, an external connection bent waveguide and a bus waveguide. The curvature radius of each point of the internal connection bending waveguide changes along with the length and meets the Euler spiral equation, and the internal connection bending waveguide is used for connecting the starting points of the first spiral bending waveguide and the second spiral bending waveguide. The external connection bending waveguide is used for connecting the end points of the first spiral bending waveguide and the second spiral bending waveguide. The first spiral bent waveguide, the second spiral bent waveguide, the internal connection bent waveguide and the external connection bent waveguide form a closed spiral annular waveguide. A light beam transmitted in the bus waveguide is coupled into the spiral annular waveguide. The invention further discloses a design method of the low-repetition-frequency spiral microcavity structure. According to the invention, loss caused by high-order mode crosstalk and mode mismatch can be reduced, and the area utilization rate of a chip is improved.

A beam laser diode takes a silicon-based nitride epitaxial wafer as a carrier and comprises a silicon substrate layer, an aluminum nitride layer, a u-type gallium nitride layer, an n-type gallium nitride layer, a quantum well layer, a p-type gallium nitride layer and a SiO2 layer which are sequentially arranged from bottom to top, the p-type electrode is arranged on the p-type gallium nitride layer, and the n-type electrode is arranged on the edge of the n-type gallium nitride layer. A nitride material on a silicon substrate is used for preparing a micro-beam stress sensitive area LD by utilizing photoetching and ICP (Inductively Coupled Plasma) etching processes for emitting light, and after electrification, the laser LD is obtained in the stress sensitive area of the beam. Under the power-on condition, before and after acceleration loading, due to the fact that quantum limits the stark effect, the frequency wavelength of laser changes, and the magnitude of the acceleration can be sensed through difference frequency.

The invention relates to the technical field of ultrasonic sensors, and discloses an optical fiber end face integrated micro-cavity sonic sensor which comprises a seven-core optical fiber, two light propagation waveguides, a coupling waveguide, a supporting assembly, a micro disc, a light emitter and a photoelectric detector, the two light propagation waveguides are arranged on the end face of the seven-core optical fiber, the coupling waveguide is arranged between the two light propagation waveguides, and the supporting assembly is arranged on the end face of the seven-core optical fiber. A supporting assembly is arranged on the end face of the seven-core optical fiber, a micro disc is arranged on the top of the supporting assembly, and the first fiber core and the second fiber core are connected with an external light emitter and an external photoelectric detector respectively. The wavelength of the laser output by the light emitter is locked at the linear slope of the micro-disk harmonic peak, the radius and the effective refractive index of the micro-disk are changed through the action of ultrasonic waves on the micro-disk and vibration, the harmonic peak drifts and the intensity of the output laser is changed, and then the ultrasonic waves are detected; compared with the prior art, ultrasonic waves are detected through a micro-disk resonance and laser sideband locking method, and the problem of electromagnetic interference can be effectively avoided by utilizing the optical principle.

The invention discloses an organic light-emitting device and a light-emitting device, one side of the organic light-emitting device close to an anode is provided with two hole transport layers which are arranged according to a high-low refractive index relationship, the material of the first hole transport layer is as shown in a formula 1, and the material of the second hole transport layer is as shown in a formula 2. According to the organic light-emitting device and the light-emitting device, through matching optimization of device film layer materials and structural combination of film layers with different refractive indexes, the stability of the materials and transmission of current carriers are guaranteed, meanwhile, light field distribution is improved through optimization of an optical microcavity structure, the photon extraction efficiency of the device is improved, and the light-emitting efficiency of the device is improved. The ineffective loss of photon energy in the organic layer is reduced, so that the performance of the organic light-emitting device and the light-emitting device comprising the organic light-emitting device is improved in the aspects of light-emitting efficiency, starting voltage, light-emitting service life and the like. Formula 1 and Formula 2.

The invention relates to the technical field of electroluminescence, and discloses a laminated organic light-emitting device and application thereof, and the laminated organic light-emitting device comprises an anode layer, a first light-emitting unit, an electron transport layer, an interface modification layer, a connection layer, a second light-emitting unit and a cathode layer which are sequentially arranged from bottom to top; the electron transport layer comprises a hole blocking layer and an n-type electron transport layer; wherein the n-type electron transport layer is composed of an n-type dopant and an organic electron transport material, has the functions of electron transport, charge separation and injection and regulation and control of the optical microcavity effect of the laminated device, can simplify the electron transport and connection layer structure of the laminated device, and effectively improves the conductivity of the laminated device; according to the laminated organic light-emitting device, the voltage drop of the body is obviously reduced, and the interface electron injection barrier is reduced, so that the laminated organic light-emitting device has the advantages of low driving voltage, high efficiency and long service life, and the effect of adjusting the optical microcavity of the device can be achieved by utilizing the n-type electron transport layer.

The invention discloses an optical frequency comb generation device and method based on lithium niobate film waveguide series connection double micro-rings. The device comprises a first bus waveguide, a first annular waveguide, a second annular waveguide and a second bus waveguide which are etched on a lithium niobate film. Wherein one end of the first bus waveguide is a pump light input end, the other end of the first bus waveguide is an auxiliary light input end, the first bus waveguide and the first annular waveguide are mutually coupled, the first annular waveguide and the second annular waveguide are mutually coupled, the second annular waveguide is a soliton cavity, and a temperature regulation and control device is arranged below the soliton cavity. The temperature of the soliton cavity is regulated and controlled to enable the harmonic peak of the soliton cavity to drift, so that the pump light enters a soliton state, the auxiliary light performs power compensation on the soliton state of the pump light, and a soliton optical frequency comb is generated. In combination with auxiliary photo-thermal modulation, the micro-cavity thermal effect is compensated, the soliton stability is improved, and finally a comb-shaped structure spectrum with stable performance, high coherence and high flatness is output from a soliton cavity port.

A continuous-wave perovskite polariton laser device, including an optical microcavity, a spacer layer, and a gain medium. The gain medium is a perovskite material or a composite material containing perovskite, in a form of thin film, microcrystal, phosphor, nanocrystal, quantum dot, or single crystal. The perovskite gain medium is prepared by solution process or vacuum deposition technique, and is combined with an optical resonator. By exploiting the strong interaction between excitons and photons, a steady-state exciton-polariton condensation is formed, enabling the generation of continuous-wave polariton laser emission with a low threshold. The laser device can achieve low-threshold continuous-wave or pulsed lasing emission at room temperature under various light sources pumping or electrical excitation. Its threshold is 1 to 3 orders of magnitude lower than that of conventional semiconductor lasers, with an optimized threshold as low as 0.1 to 1 W / cm2, representing a novel ultralow-power coherent light source technology.

The invention discloses a wind turbine generator blade vibration detection method based on an optical fiber echo wall mode singular point micro-cavity model, and relates to the field of wind turbine generator detection, and the method comprises the steps: carrying out the external vibration response of a detection position of a wind turbine generator blade, obtaining a micro-cavity response signal, measuring the mode splitting value of a micro-cavity based on the micro-cavity response signal, and calculating the mode splitting value of the micro-cavity. Determining vibration data of the wind turbine generator blades; constructing a three-dimensional model of the wind turbine generator blade, extracting modal parameters from the vibration data by using a random space method, and obtaining a vibration damage result of the wind turbine generator blade based on the modal parameters and the three-dimensional model; and performing fusion processing on the vibration data according to the combination of the on-site environment data of the wind turbine generator and the dynamic correction, determining a state estimation value of the wind turbine generator blade, and generating a vibration detection result of the wind turbine generator blade based on the state estimation value. The method achieves the accurate measurement of the weak vibration in a complex environment, and plays a key role in the operation detection and fault prediction of a wind driven generator.

The invention provides a weak measurement assisted echo wall mode microcavity time-varying signal sensing method and system. The method comprises the following steps: constructing a weak measurement assisted echo wall mode microcavity adaptive sensing platform for time-varying signal sensing; a time-varying signal is sensed through the echo wall mode microcavity, and a time-varying phase is introduced into the sensing platform; the light intensity of the echo wall mode microcavity sensing platform assisted by weak measurement is received through a photoelectric detector and a balance detector, the size of a current time-varying phase is calculated, and then the size of a current time-varying signal is solved; according to the size of the current time-varying phase, the bias phase, the first reference phase and the second reference phase are adjusted, so that the system works in a working interval of a preset condition; and estimating the time-varying signal in real time until the measurement is finished. On the basis of ensuring high-sensitivity sensing, the sensing interval of the echo wall mode microcavity is further expanded, and self-adaptive real-time measurement of the time-varying signal which is not limited by the sensitivity of the microcavity is realized.

The invention discloses a cavity enhanced Fabry-Perot interference resonant cavity, and belongs to the technical field of sensing detection. The transduction film is used as a transduction medium, vibration is generated through induction, signals are converted into vibration of the film, optical signals are modulated, and information to be measured can be obtained. According to the invention, the cavity enhancement structure is introduced, the optical fiber collimator and the transduction film jointly form an interference resonant cavity, and the phase sensitization of the optical microcavity is realized by improving the reflectivity of the cavity and prolonging the time of capturing light. Through stable interference of the resonant cavity, strong optical constraint is generated, and interaction between a light beam and a transmission signal is enhanced. In addition to the characteristics of high sensitivity, small loss, small size and high integration, the device has high expandability in the design aspects of bandwidth and sensitivity, and good sensing performance and design flexibility of the device provide a new opportunity for propelling the military and civil fields such as monitoring technology and biomedicine.

The invention relates to the technical field of optoelectronic devices, in particular to an optoelectronic device based on single-molecule chiral double free radicals and a preparation method thereof.The optoelectronic device comprises an optical microcavity and a light-emitting core unit, and the light-emitting core unit is arranged in the optical microcavity; wherein the optical microcavity comprises a first reflection layer, a transparent spacing layer and a second reflection layer which are longitudinally arranged in sequence; a gap is formed between the multilayer dielectric first reflecting layer and the transparent spacing layer, and the second reflecting layer is stacked on the transparent spacing layer; and the light-emitting core unit is arranged between the multilayer medium first reflecting layer and the transparent spacing layer and is used for realizing electro-circularly polarized light emission. According to the design, circularly polarized light generated by the light-emitting core unit in the optical microcavity is reflected for multiple times and effectively propagated, so that regulation and enhancement of circularly polarized light emission are realized, and the stability of a photoelectronic device is effectively ensured.

The invention discloses an optical communication wavelength meter for exciting rubidium atom two-photon transition based on a lithium niobate microcavity optical comb. The optical communication wavelength meter comprises a microcavity optical comb module, a repetition frequency phase-locked loop, an initial frequency phase-locked loop, a rubidium atom gas chamber and a frequency-stabilized light source. The micro-cavity optical comb module is used for generating a fundamental frequency optical comb and a frequency doubling optical comb, rubidium atom two-photon transition is directly excited, the frequency stabilization light source achieves frequency stabilization through rubidium atom saturation absorption, and the repetition frequency phase-locked loop feeds back and adjusts repetition frequency according to error signals of two-photon transition fluorescence intensity. The initial frequency phase-locked loop feeds back and adjusts the initial frequency through beat frequency signals of the frequency multiplication optical comb and the frequency stabilization light source, and the two groups of phase-locked loops stabilize the frequency of the microcavity optical comb to two groups of transition energy levels, so that locking of the repetition frequency and the initial frequency is realized. According to the optical communication wavelength meter based on the lithium niobate microcavity optical comb excitation rubidium atom two-photon transition, the cross modulation effect in a pumping wavelength and pumping power combined adjustment mechanism is avoided, and the size of the optical communication wavelength meter is reduced.

The invention discloses a narrow-linewidth double-frequency laser generation method, and belongs to the technical field of microwave photons. Two paths of optical signals generated by two semiconductor lasers with different wavelengths are injected into the same optical microcavity, the two paths of optical signals enter a self-injection locking state in different modes of the optical microcavity, and the optical microcavity can output narrow-linewidth double-frequency laser. The invention further discloses a narrow-linewidth double-frequency laser generating device and a photo-production microwave method and device. Two double-frequency lasers with different frequencies are locked on one optical microcavity through an original double-self-injection locking technology, the problem of phase noise of a double-frequency light source is effectively solved while the linewidth of the input laser is narrowed, common-mode noise caused by mode difference of the two lasers in a locking state is eliminated, and the dual-frequency light source has the advantages of being simple in structure and convenient to operate. And the traditional servo locking technology is not needed, so that the complexity of the system is simplified.

The invention provides a method and a system for realizing a weak measurement enhanced chip-level microcavity gyroscope. The method comprises the following steps of: 1, providing a coherent state input by a system by using a single-frequency laser; 2, the output of the single-frequency laser is switched between a first path and a second path through an optical switch, the laser beam is transmitted to the first path in the first half part of the period, and the laser beam is transmitted to the second path in the second half part of the period; 3, the light transmitted along the first path and the second path respectively passes through an optical resonant cavity to sense the rotation angular speed, and a weak value amplification effect is achieved by setting front and back selection states; and step 4, weak measurement enhanced output results transmitted along the first path and the second path are respectively received by a photoelectric detector, and the value of the rotation angular velocity is demodulated according to the obtained output results. According to the invention, the optical microcavity is used as a sensing unit of the gyroscope, the sensing performance of the integrated optical gyroscope is greatly enhanced through a weak measurement technology, and the whole set of system can realize chip-level integration.

Disclosed are a heat-dissipating plate and a display device, the heat-dissipating plate includes a heat-dissipating plate body; a heat-dissipating microcavity embedded in the heat-dissipating plate body; and a heat dissipation working medium filled inside the heat-dissipating microcavity. The heat-dissipating microcavity includes a heat absorption tank, a liquid collection tank arranged at intervals with the heat absorption tank, and a capillary micro channel group between the heat absorption tank and the liquid collection tank and communicating with the heat absorption tank and the liquid collection tank, and the capillary micro channel group includes a plurality of capillary micro channels arranged at intervals.

The invention provides a light-emitting substrate, a lighting device and a display device, and relates to the technical field of display. The anode layer is arranged on one side of the substrate; the electroluminescent layer is arranged on one side, far away from the substrate, of the anode layer; the cathode layer is arranged on one side, far away from the substrate, of the electroluminescent layer; the first covering layer is arranged on one side, far away from the substrate, of the cathode layer; the second covering layer is arranged on one side, far away from the substrate, of the first covering layer; the refractive index of the second covering layer is greater than that of the first covering layer; the packaging structure layer comprises a first inorganic packaging layer and is arranged on one side, far away from the substrate, of the second covering layer; the first covering layer can improve the coupling efficiency between the light-emitting microcavity and the packaging structure layer, and the light-emitting efficiency of the light-emitting substrate is effectively improved.

The invention relates to a vacuum microcavity interferometer chip, a manufacturing method and an ultra-high precision optical pressure sensor, the lower surface of a first substrate is etched to form a concave cavity, after the first substrate and a second substrate are bonded, the concave cavity forms an F-P interference cavity, and the F-P interference cavity forms an F-P cavity; a first reflecting surface is arranged on the surface of the first substrate in the F-P interference cavity, a second reflecting surface is arranged on the surface of the second substrate in the F-P interference cavity, an annular cavity is formed in the upper surface of the third substrate, and the getter film is deposited on at least one surface in the annular cavity. The second substrate is provided with at least one vent hole, and the vent hole is communicated with the F-P interference cavity and the annular cavity; the projections of the annular cavity and the F-P interference cavity on the horizontal plane at least partially coincide.

The invention discloses a generating device capable of generating an ultra-flat broadband micro comb. The generating device comprises a pump pulse generating module, a micro comb generating module and a micro comb generating module, the pumping pulse compression module is connected with the pumping pulse generation module; the high-Q-value microcavity module is connected with the pumping pulse compression module; and the micro comb detection and feedback module is respectively connected with the high-Q-value micro-cavity module and the pump pulse generation module, and is used for monitoring the output spectrum and power change of the high-Q-value micro-cavity module and adjusting the output wavelength of the picosecond pulse light according to the output spectrum and power change so as to stabilize the ultra-flat broadband micro comb. By arranging the high-Q-value micro-cavity, the spectral bandwidth of the micro-comb can be effectively expanded, and the ultra-flat broadband micro-comb is output; meanwhile, the defects that the hyperbolic secant single soliton micro-comb is poor in flatness and narrow in bandwidth are overcome, and the micro-comb has obvious advantages in the application field with high requirements for the flatness and the spectral bandwidth at the same time.