Light floating resonant gyroscope

Abstract

The invention discloses a light floating resonant gyroscope which comprises a particle capture suspension module, a particle resonance driving module and a particle signal detection module, the particle capture suspension module is used for generating a particle capture light trap and performing non-contact light suspension on particles, the particle resonance driving module is used for driving the particles to work at resonant frequency and enhancing the resonance effect of suspended particles, and the particle signal detection module is used for detecting motion information of the particles in the light trap and extracting angular velocity signals. Based on a light floating resonance effect, a light force suspension mode is adopted, mechanical contact friction is avoided, particles work in a vacuum environment, external interference is effectively isolated, work is stable, and the service life of a system is long.

Description

Technical Field

[0001] The invention belongs to the fields of inertial measurement technology and optical tweezers technology, and particularly relates to an optically floating resonant gyroscope. Background Art

[0002] Optical tweezers are a contactless levitation and manipulation technology that utilizes momentum transfer between light and microparticles. When a focused laser beam is incident on a microparticle, it is scattered and refracted. The particle is subjected to scattering and gradient forces, trapping it in a three-dimensional optical trap. Special modulation of the optical field enables manipulation of the particle's motion, including spatial displacement, spin, orbital rotation, and axial tilt. Optically levitated microparticles typically range in size from nanometers to micrometers. Due to their high temporal and spatial resolution, they have demonstrated the potential for highly sensitive detection of fundamental physical quantities such as force, torque, and displacement.

[0003] As a sensitive element for measuring inertial angular velocity, gyroscopes play an important role in determining the carrier's orientation and attitude. Mainstream gyroscopes are categorized into rotor gyroscopes, resonant gyroscopes, optical gyroscopes, and atomic gyroscopes. Rotor gyroscopes have been around for a long time and utilize the fixed axis or precession of high-speed mechanical rotors to measure the carrier's angular velocity. Resonant gyroscopes, primarily categorized as MEMS resonant gyroscopes and hemispherical resonant gyroscopes, utilize the Coriolis force caused by driving orthogonal axes to sense angular velocity, demonstrating impressive miniaturization, low-cost fabrication, and high precision. Optical gyroscopes utilize the Sagnac effect, using the movement of interference fringes to reflect the magnitude of the input angular velocity. Atomic gyroscopes, currently still in the experimental and R&D stages, are primarily categorized into cold atom interferometer gyroscopes, hot atom spin-exchange relaxation gyroscopes, and nuclear magnetic resonance gyroscopes, promising breakthroughs in existing gyroscope accuracy.

[0004] The use of optically levitated particles offers promise for precise angular velocity measurement. Currently, a common approach involves using modulated circularly polarized light to drive the particles to spin at high speed in a low-pressure environment. This approach then uses either spatial attitude detection or speed detection methods to measure angular velocity. Essentially, this is a rotor-type gyroscope. The spatial attitude detection method requires high optical alignment accuracy, necessitating precise photolithography processing of the particle surface. Speed measurement, on the other hand, utilizes a high-speed rotor precession response to an angular velocity input, resulting in a change in optical torque input, which in turn causes a change in rotor speed, reflecting the carrier's angular velocity. However, the optical drive shaft deviates from its initial orientation as the carrier rotates, causing changes in the input particle torque. This, coupled with the rotor particle's precession torque, also causes a change in the particle's rotational inertia. Consequently, complex decoupling is required to resolve the input angular velocity. Considering that within a certain range, the optical force acting on the optically levitated particles can be compared to a Hooke spring, the particles suspended in the optical trap have a natural inherent frequency and have an extremely high quality factor in a vacuum environment. When they are driven by an external force to operate at the resonant frequency, an optically levitated resonant gyroscope can be designed by utilizing their response characteristics to the Coriolis force caused by the external input angular velocity. Summary of the Invention

[0005] To solve the above technical problems, the present invention proposes an optically floating resonant gyroscope. The present invention is based on the fact that two beams of Gaussian lasers transmitted in opposite directions can form a dual-beam three-dimensional light trap after being focused and aligned. The force acting on the particle is similar to a spring force, and its calculation expression can be approximated as follows: ,in, The center position of the optical trap is offset by the particle in a certain axial direction. When the particle is captured, it has a natural inherent frequency in the optical trap. By modulating a weak focused laser in the direction of the optical axis, when its frequency changes to match the resonant frequency of the particle, the particle can be driven to resonant motion in the direction of the optical axis. When there is an external angular velocity input orthogonal to the driving axis, a Coriolis force will be introduced in the sensitive axis orthogonal to the driving axis. When the optical trap is precisely designed so that the resonant frequency of the driving axis is the same as the resonant frequency of the sensitive axis, the Coriolis force caused by the angular velocity input will be most effectively amplified in the direction of the sensitive axis, thereby causing the particle to move in the optical trap. The movement frequency matches the resonant frequency and is proportional to the angular velocity input. By analyzing and calibrating the displacement characteristics of the forward scattered light of the particle and detecting the movement information of the particle in the optical trap in real time, the input angular velocity can be measured.

[0006] The technical solution adopted in the present invention is as follows:

[0007] An optically levitated resonant gyroscope comprises: a particle capture and suspension module, a particle resonance drive module, and a particle signal detection module; the particle capture and suspension module is used to generate a particle capture optical trap to perform contactless optical force suspension on the particles; the particle resonance drive module is used to drive the particles to operate at a resonant frequency to enhance the resonance effect of the suspended particles; and the particle signal detection module is used to detect the motion information of the particles in the optical trap and extract angular velocity signals.

[0008] The present invention has the following beneficial effects:

[0009] 1. The present invention is based on the optical floating resonance effect and adopts the optical force suspension method, without mechanical contact friction. The particles work in a vacuum environment, effectively isolated from external interference, stable operation, and long system life.

[0010] 2. The present invention utilizes the momentum exchange between photons and particles to achieve precise control of the spatial state of particles. The optical force modulation accuracy reaches the femtonewton level, the particle displacement detection reaches the picometer level, the temporal and spatial resolution is high, and the system quality factor is significantly improved in a vacuum environment, which can achieve a highly sensitive response to angular velocity.

[0011] 3. The working particles used in the present invention are of mesoscopic size, and the working range is in the micron range, which has the potential for miniaturization and chip manufacturing. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of an optical floating resonant gyroscope of the present invention, wherein 1-capture laser, 2-first plano-convex lens, 3-second plano-convex lens, 4-first linear polarizer, 5- Wave plate, 6-first polarization beam splitter prism, 7-first beam collector, 8-first dichroic mirror, 9-vacuum chamber, 10-first aspheric lens, 11-second aspheric lens, 12-second dichroic mirror, 13-first reflector, 14-first non-polarization beam splitter prism, 15-second beam collector, 16-driving laser, 17-second linear polarizer, 18-electro-optic modulator, 19-second polarization beam splitter prism, 20-second reflector, 21-third reflector, 22-fourth reflector, 23-filter, 24-second non Polarizing beam splitter, 25-third non-polarizing beam splitter, 26-fifth reflector, 27-neutral attenuation plate, 28-first condenser, 29-second condenser, 30-first balanced photodetector, 31-fourth non-polarizing beam splitter, 32-first D-type reflector, 33-sixth reflector, 34-third condenser, 35-fourth condenser, 36-second balanced photodetector, 37-second D-type reflector, 38-seventh reflector, 39-fifth condenser, 40-sixth condenser, 41-third balanced photodetector.

[0013] Figure 2 Schematic diagram of the optical floating resonance operation in the present invention;

[0014] Figure 3 It is the angular velocity input response of the optically suspended resonant particle sensitive axis in the present invention. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0016] like Figure 1 The present invention discloses an optically levitated resonant gyroscope, comprising a particle capture and suspension module, a particle resonance drive module, and a particle signal detection module. The particle capture and suspension module generates a particle capture optical trap for contactless optical levitation of particles. The particle resonance drive module drives the particles to operate at a resonant frequency, enhancing the resonant effect of the suspended particles. The particle signal detection module detects the motion of the particles in the optical trap and extracts angular velocity signals.

[0017] like Figure 1 As shown, the particle capture suspension module includes a capture laser 1, a first plano-convex lens 2, a second plano-convex lens 3, a first linear polarizer 4, Wave plate 5, first polarization beam splitter prism 6, first beam collector 7, first dichroic mirror 8, vacuum chamber 9, first aspheric lens 10, second aspheric lens 11, second dichroic mirror 12, first reflector 13, first non-polarization beam splitter prism 14, second beam collector 15. The light source of the capture laser 1 is a Gaussian single-mode continuous laser, which is expanded by the first plano-convex lens 2 and the second plano-convex lens 3 in sequence. The expansion factor meets the requirements of the capture light trap resonance operation (the resonant frequency of the particle driving axis is the same as the resonant frequency of the particle sensitive axis). The beam expanded laser is polarized by the first linear polarizer 4, Wave plate 5 modulates the linear polarization direction and splits the light through first polarization beam splitter prism 6. Transmitted P light is reflected by first dichroic mirror 8 and focused by first aspheric lens 10. Reflected S light passes through first non-polarization beam splitter prism 14 with an R:T ratio of 1:9, is reflected by first reflector 13 and second dichroic mirror 12, and converges through second aspheric lens 11. First aspheric lens 10 and second aspheric lens 11 are identical and are both mounted in vacuum chamber 9. Non-polarization beam splitter prism 14 reflects scattered P light from particles back into the detection optical path. Beam dumps 7 and 15 are used to recover ineffective outgoing laser light.

[0018] like Figure 1As shown, the particle resonance driving module includes: a driving laser 16, a second linear polarizer 17, an electro-optical modulator 18, a second polarization beam splitter prism 19, a second reflector 20, a third reflector 21, and a fourth reflector 22. The driving laser 16 light source is a Gaussian single-mode continuous laser, which is polarized by the second linear polarizer 17 and has its optical rotation deflection frequency adjusted by the electro-optical modulator 18. After being split by the second polarization beam splitter prism 19, the transmitted P light is reflected by the second reflector 20 and the third reflector 21 in sequence and then focused by the first aspheric mirror 10. The reflected S light is reflected by the fourth reflector 22 and then focused by the second aspheric mirror 11. The adjustment frequency of the electro-optical modulator 18 is the same as the resonance frequency of the light-suspended particles in the light trap, so as to drive the particles to resonate along the optical axis in the light trap.

[0019] like Figure 1As shown, the particle signal detection module includes: a filter 23, a second non-polarizing beam splitter prism 24, a third non-polarizing beam splitter prism 25, a fifth reflector 26, a neutral attenuation plate 27, a first condenser 28, a second condenser 29, a first balanced photodetector 30, a fourth non-polarizing beam splitter prism 31, a first D-type reflector 32, a sixth reflector 33, a third condenser 34, a fourth condenser 35, a second balanced photodetector 36, a second D-type reflector 37, a seventh reflector 38, a fifth condenser 39, a sixth condenser 40, and a third balanced photodetector 41; the particle forward scattered light signal reflected by the first non-polarizing beam splitter prism 14 is filtered out by the filter 23 to remove the driving light signal, and then is transmitted through the R:T= The second non-polarizing beam splitter prism 24 with an R:T ratio of 7:3 is used for beam splitting. The transmitted light is split by the third non-polarizing beam splitter prism 25 with an R:T ratio of 1:1 and then passes through the first condensing lens 28 and the second condensing lens 29 to enter the beam receiving port of the first balanced photodetector 30. The transmitted light of the third non-polarizing beam splitter prism 25 is converged and then diverged by the second condensing lens 29, and its incident light spot is slightly larger than the beam receiving port of the first balanced photodetector 30. The reflected light is attenuated by the neutral attenuation plate 27 to ensure that the photoelectric differential signal received by the first balanced photodetector 30 when the captured particles are at the center of the light trap is. The fifth reflector 26, the sixth reflector 33, and the seventh reflector 38 are all identical plane reflectors for reflecting the light beam. The reflected light from the second non-polarizing beam splitter 24 is split by the fourth non-polarizing beam splitter 31 with R:T=1:1, and the reflected light and the transmitted light are respectively subjected to x-axis and y-axis displacement signal detection, wherein the x-axis signal detection light is split into two semicircular beams of the same shape by the first D-type reflector 32 parallel to the direction of gravity, and enters the beam receiving port of the second balanced photodetector 36 through the third condenser 34 and the fourth condenser 35; the y-axis signal detection principle is the same as the x-axis, but the splitting direction of the second D-type reflector 37 is perpendicular to the direction of gravity, and the split light beams pass through the fifth condenser 39 and the sixth condenser 40 respectively and enter the beam receiving port of the third balanced photodetector 41. When the particle is in a balanced photodetector, the output voltage is a background noise signal approaching 0. When the particle deviates from the center position in the light trap, the x, y, and z axis detection voltage output signals will be proportional to the particle position signal. According to the energy equipartition theorem: ,in To capture particulate mass, For particles in The instantaneous speed in the axial direction, , is the Boltzmann constant, The displacement signal can be calibrated by setting it to the ambient temperature.

[0020] Figure 2The figure shows the working diagram of the optical floating resonant gyroscope, where the z-axis is the driving axis and the angular velocity input direction is the y-axis. When the optical floating particles working at the resonant frequency sense the Coriolis force caused by the angular velocity, they will precess in the direction of the sensitive axis x-axis. The precession signal of the sensitive axis direction is as follows: Figure 3 shown.

[0021] The capture laser 1 light source is expanded by a plano-convex lens group composed of a first plano-convex lens 2 and a second plano-convex lens 3, and then polarized by a first linear polarizer 4. The wave plate 5 adjusts the polarization direction of the linearly polarized light of the laser light source and then enters the first polarization beam splitter prism 6 for beam splitting. The output light P of the first polarization beam splitter prism 6 is reflected by the first dichroic mirror 8 and enters the first aspheric lens 10. The reflected light S of the first polarization beam splitter prism 6 is reflected by the non-polarization beam splitter prism 14 with an R:T ratio of 1:9, the first reflector 13, and the second dichroic mirror 12 and then enters the second aspheric lens 11. Adjusting the focused S light and the focused P light to overlap can generate a three-dimensional particle capture light trap.

[0022] After the driving laser 16 is polarized by the polarizer, the periodic change of the optical rotation angle of the linear polarized light is achieved through the polarization modulator, and the beam is split by the second polarization beam splitter prism 19; the output light P of the second polarization beam splitter prism 19 is reflected by the second reflector 20 and the third reflector 21, and then passes through the first dichroic mirror 8 to enter the first aspheric lens 10; the reflected light S of the second polarization beam splitter prism 19 is reflected by the fourth reflector 22, and then passes through the second dichroic mirror 12 to enter the second aspheric lens 11.

[0023] A first non-polarizing beam splitter prism 14 with an R:T ratio of 1:9 is placed in the reflected S-light path between the first polarizing beam splitter prism 6 and the first reflector 13. It is used to reflect the forward scattered light of the particles into the subsequent detection optical path. The detection optical path is divided into three axes: x, y, and z for particle displacement signal detection, with the z-axis being the direction of optical propagation, the y-axis being the direction of gravity, and the x-axis being perpendicular to the yz plane. A second non-polarizing beam splitter prism 24 has a splitting ratio of R:T of 7:3. The transmitted light is split by a third non-polarizing beam splitter prism 25 with a splitting ratio of R:T of 1:1 and then enters a first balanced photodetector 30. The transmitted light is then converged by a condenser 28 and then diverged to the beam receiving end of the first balanced photodetector 30. The diverged light spot is slightly larger than the detector's photosensitive surface. A central attenuator is provided in the reflected light path to ensure that the z-axis displacement output is zero when the particle is at the center of the light trap. The light reflected by the second non-polarizing beam splitter prism 24 enters the fourth non-polarizing beam splitter prism 31 with a splitting ratio of R:T=1:1 and is then split as x-axis and y-axis displacement detection light respectively. The detection beams are both split into two semicircular laser beams of equal size by the first D-type reflector 32 and enter the third balanced photodetector 41, where the x-axis detection light splitting direction is parallel to the gravity direction, and the y-axis detection light splitting direction is perpendicular to gravity.

[0024] There is no specific wavelength requirement for the capture laser 1 and the driving laser 16, but their wavelengths need to be different to ensure that the filter 23 in the detection optical path can filter out the interference of the driving laser 16 signal and retain the particle forward scattered capture laser 1 signal.

[0025] The captured particles are micron-sized transparent silicon microspheres, which are transported into the light trap by atomization or piezoelectric ceramic support. Their resonant frequency in the light trap is between several hundred and tens of thousands of hertz, depending on the specific light trap light power and particle size.

[0026] The first dichroic mirror 8 and the second dichroic mirror 12 The reflection wavelength matches the wavelength of the trapping laser 1 to reflect the trapping laser 1 and transmit the driving laser 16 into the vacuum cavity.

[0027] The vacuum chamber 9 has a quartz glass flange window in the optical axis direction for transmitting the capture laser 1 and the drive laser 16. A vacuum-adapted position-adjustable lens holder is used to install the first aspheric lens 10 and the second aspheric lens 11 in the vacuum chamber 9 to achieve alignment of the incident focused beam light trap; a quartz glass flange window is opened directly above the light trap in a direction parallel to gravity for observing the particle capture state.

[0028] When the driving laser 16 matches the resonant frequency of the light-floating particles for frequency modulation, the particles suspended in the light trap will resonate on the z-axis, and the axis orthogonal to the z-axis is the sensitive axis. When there is an angular velocity input, the introduction of the Coriolis force will cause the light-floating particles to displace in the xy plane. The frequency is consistent with the magnitude of the Coriolis force, and its magnitude is proportional to the Coriolis force. By fine-tuning the light trap so that the resonant frequencies of the x-axis and y-axis are the same as the driving axis z-axis, the angular velocity displacement response signal will be effectively amplified, and the measurement of the input angular velocity can be achieved through the real-time spatial motion state detection of the particles.

[0029] The resonant driving equation for a particle suspended in a light trap is: ,in The optical force is modulated at the same frequency as the resonance frequency of the particle in the optical trap, is the light trap stiffness in the driving axis direction, is the displacement in the direction of the driving shaft, is the Stokes friction coefficient, and the particle is driven by a sinusoidal signal. The response equation of the sensitive axis input angular velocity (taking the y-axis input angular velocity as an example) is: , where the right side of the equation is the Coriolis force caused by the angular velocity input, is the displacement in the sensitive axis direction, is the speed of the driving shaft, The input angular velocity can be detected in real time by detecting the sensitive axis displacement response model caused by the Coriolis force.

[0030] The above descriptions are merely embodiments of the present invention and are not intended to limit the scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied to other related system fields, are also included in the scope of protection of the present invention.

[0031] The contents not described in detail in the specification of the present invention belong to the prior art known to those skilled in the art.

Claims

1. An optically floating resonant gyroscope, characterized in that: include: Particle capture and suspension module, particle resonance driving module and particle signal detection module; The particle capture and suspension module is used to generate a particle capture optical trap and perform contactless optical suspension on the particles. The particle resonance drive module is used to drive the particles to operate at a resonant frequency and enhance the resonance effect of the suspended particles. The particle signal detection module is used to detect the motion information of the particles in the optical trap and extract the angular velocity signal.

2. The optical floating resonant gyroscope according to claim 1, wherein: The particle capture suspension module includes a capture laser, a first plano-convex lens, a second plano-convex lens, a first linear polarizer, Wave plate, first polarization beam splitter, first beam collector, first dichroic mirror, vacuum cavity, first aspheric lens, second aspheric lens, second dichroic mirror, first reflector, first non-polarization beam splitter, second beam collector; the capture laser light source is Gaussian single-mode continuous laser, which is sequentially expanded by the first plano-convex lens and the second plano-convex lens, and the expanded laser is sequentially polarized by the first linear polarizer, The wave plate modulates the linear polarization direction and splits the beam through the first polarization beam splitter prism. The transmitted P light is reflected by the first dichroic mirror and then focused by the first aspheric lens. The reflected S light passes through the first non-polarization beam splitter prism with R:T=1:9 and is reflected by the first reflector and the second dichroic mirror, and is converged by the second aspheric lens. The first aspheric lens and the second aspheric lens are identical and are both installed in the vacuum chamber.

3. The optical floating resonant gyroscope according to claim 1, wherein: The particle resonance driving module includes: a driving laser, a second linear polarizer, an electro-optical modulator, a second polarization beam splitter prism, a second reflector, a third reflector, and a fourth reflector; the driving laser light source is a Gaussian single-mode continuous laser, which is polarized by the second linear polarizer, and its optical rotation deflection frequency is adjusted by the electro-optical modulator. After being split by the second polarization beam splitter prism, the transmitted P light is reflected by the second reflector and the third reflector in turn and then focused by the first aspheric mirror, and the reflected S light is reflected by the fourth reflector and then focused by the second aspheric mirror, wherein the adjustment frequency of the electro-optical modulator is the same as the resonance frequency of the light-floating particles in the light trap, so as to drive the particles to resonate along the optical axis in the light trap.

4. The optical floating resonant gyroscope according to claim 1, wherein: The particle signal detection module includes: a filter, a second non-polarizing beam splitter prism, a third non-polarizing beam splitter prism, a fifth reflector, a neutral attenuation plate, a first condenser, a second condenser, a first balanced photodetector, a fourth non-polarizing beam splitter prism, a first D-type reflector, a sixth reflector, a third condenser, a fourth condenser, a second balanced photodetector, a second D-type reflector, a seventh reflector, a fifth condenser, a sixth condenser, and a third balanced photodetector; the particle forward scattered light signal reflected by the first non-polarizing beam splitter prism is filtered out of the driving light signal by the filter, and then split by the second non-polarizing beam splitter prism with R:T=7:3, wherein the transmitted light is split by the third non-polarizing beam splitter prism with R:T=1:1 and then passes through the first condenser and the second condenser to enter the beam receiving port of the first balanced photodetector, wherein the transmitted light of the third non-polarizing beam splitter prism is converged and diverged by the first condenser, and its incident light spot is slightly larger than that of the third non-polarizing beam splitter prism. A balanced photodetector beam receiving port is provided. The reflected light passes through a neutral attenuation plate for optical power attenuation to ensure that the photoelectric differential signal received by the first balanced photodetector is 0 when the captured particle is at the center of the light trap. The fifth, sixth, and seventh reflectors are all identical plane reflectors for reflecting the light beam. The reflected light from the second non-polarizing beam splitter prism is split by a fourth non-polarizing beam splitter prism with an R:T ratio of 1:

1. The reflected light and the transmitted light are then used for x-axis and y-axis displacement signal detection, respectively. The x-axis signal detection light passes through a first D-type reflector that is split parallel to the direction of gravity into two semicircular beams of identical shape, and enters the second balanced photodetector beam receiving port through third and fourth condensers. The y-axis signal detection principle is the same as that of the x-axis, but the splitting direction of the second D-type reflector is perpendicular to the direction of gravity. The split light beams pass through the fifth and sixth condensers, respectively, and enter the third balanced photodetector beam receiving port.

5. The optical floating resonant gyroscope according to claim 1, wherein: The capture particles are micron-sized transparent silicon microspheres, which are transported into the light trap by atomization or piezoelectric ceramic support.

6. The optically floating resonant gyroscope according to claim 1, wherein: the first dichroic mirror and the second dichroic mirror The reflection wavelength is matched with the trapping laser wavelength to reflect the trapping laser and transmit the driving laser into the vacuum cavity.

7. The optically floating resonant gyroscope according to claim 1, wherein: A vacuum-adapted position-adjustable lens frame is used in the vacuum chamber to install a first aspheric lens and a second aspheric lens, so as to achieve alignment of the light trap of the incident focusing beam.

8. The optically floating resonant gyroscope according to claim 1, wherein: A quartz glass flange window is opened just above the light trap and parallel to gravity to observe the particle capture state.

9. The optically floating resonant gyroscope according to claim 1, wherein: When the driving laser matches the resonant frequency of the optical float for frequency modulation, the particles suspended in the optical trap will resonate on the z-axis, and the axis orthogonal to the z-axis is the sensitive axis. When there is an angular velocity input, the introduction of the alternating Coriolis force will cause the optical float particles to displace in the xy plane. The frequency is consistent with the Coriolis force frequency, and its magnitude is proportional to the magnitude of the Coriolis force. By adjusting the optical trap so that the resonant frequencies of the x-axis and y-axis are the same as the driving axis z-axis, the angular velocity displacement response signal will be amplified, and the measurement of the input angular velocity can be achieved through the real-time spatial motion state detection of the particles.

10. The optical floating resonant gyroscope according to claim 4, wherein: When the particle is in equilibrium, the photodetector output voltage is a background noise signal approaching 0. When the particle deviates from the center position in the light trap, the x, y, and z axis detection voltage output signals will be proportional to the particle position signal.

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