Fluorescence spectrum analysis device and method based on solid-state electron spin ensemble

Abstract

The invention relates to the technical field of spectrum analysis, and discloses a fluorescence spectrum analysis device and method based on a solid-state electron spin ensemble, and the spectrum analysis device comprises a laser modulation unit, a confocal unit and a fluorescence processing unit; the laser modulation unit comprises a laser, a Green Taylor prism, an acoustic optical modulator, a beam expanding lens, a collimating lens, a spatial light modulator, a spatial filter and a half-wave plate which are arranged in sequence; the confocal unit comprises a dichroscope, a focusing lens, a diamond and a microwave antenna which are arranged in sequence; the diamond has a solid-state electron spinning NV color center; the fluorescence processing unit comprises an optical filter group, a sleeve lens, a lens, a linear polaroid, a Burtlan lens and a camera which are arranged in sequence. According to the invention, fluorescence generated by different axial NV color centers is distinguished from a fluorescent layer, and an idea and a method are provided for miniaturization of quantum detection equipment of the NV color centers and magnetic field debiasing.

Description

Technical Field

[0001] The present invention relates to the technical field of spectral analysis, and more specifically, to a fluorescence spectral analysis device and method based on a solid-state electron spin ensemble. Background Art

[0002] Relying on the outstanding advantage of quantum sensing technology to exceed the classical measurement limit, various measurement devices based on electron spin and quantum effects are in a booming development stage. In order to meet the requirements of micro-miniature application scenarios, researchers have focused on solid-state quantum spin materials that do not require a carrier chamber and have a large spin density. In recent years, measurement schemes based on solid-state electron spin have gradually received attention. Among them, the most rapidly developing solid spin material is the nitrogen-vacancy (NV) color center embedded in diamond. Generally, high-precision measurement can be achieved by detecting the spin geometric phase accumulated by the NV color center during rotation. Since the NV color center quantum sensing system is inseparable from the combined assembly of system components such as optical excitation detection and microwave manipulation, traditional measurement technology solutions can only combine a solid spin sample containing the NV color center with a bias magnetic field, and use the magnetic field to separate the fluorescence information of the NV color centers in four axial directions. This introduces new magnetic field interference, increases the volume of the system, and makes it difficult for the existing system to develop in the direction of miniaturization and portability.

[0003] Therefore, it is necessary to propose a fluorescence spectral analysis device and method based on a solid-state electron spin ensemble to at least partially solve the problems existing in the prior art. Summary of the Invention

[0004] A series of simplified concepts are introduced in the Summary of the Invention section, which will be further elaborated in the Detailed Description section. The Summary of the Invention section of the present invention does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the protection scope of the claimed technical solution.

[0005] To at least partially solve the above problems, the present invention provides a fluorescence spectral analysis device based on a solid-state electron spin ensemble, including:

[0006] A laser modulation unit, a confocal unit, and a fluorescence processing unit;

[0007] The laser modulation unit includes a laser, a Glan-Taylor prism, an acousto-optic modulator, an expansion lens, a collimating lens, a spatial light modulator, a spatial filter, and a half-wave plate arranged in sequence;

[0008] The confocal unit includes a dichroic mirror, a focusing lens, a diamond, and a microwave antenna arranged in sequence; the diamond has an NV color center with solid-state electron spin;

[0009] The fluorescence processing unit includes a filter group, a sleeve lens, a lens, a linear polarizer, a Bertrand lens, and a camera, which are arranged in sequence.

[0010] Preferably, the laser is set as any one of a semiconductor laser, a gas laser, a solid-state laser, and a laser diode, and the wavelength of the laser is less than 637 nm.

[0011] Preferably, the main material of the Glan-Taylor prism is a rhombohedral crystal of CaCO3; the materials of the beam expander lens, the collimating lens, the lens, and the Bertrand lens are any one of optical glass, ultraviolet fused silica, calcium fluoride, germanium, silicon, and zinc selenide.

[0012] Preferably, the acousto-optic modulator is used to control the change of the laser beam intensity and load information on the optical frequency carrier; the spatial light modulator is any one of phase-type airborne light modulators; the spatial filter is any one of the spatial filters composed of two lenses with the same focal length and a diaphragm.

[0013] Preferably, the half-wave plate is a kind of birefringent crystal.

[0014] Preferably, the dichroic mirror is any one of the anti-green and red-transmitting dichroic mirror series, and the focusing lens is any one of oil immersion objectives.

[0015] Preferably, the microwave antenna is any one of a PCB antenna, a coplanar waveguide antenna, and a planar waveguide antenna.

[0016] Preferably, the filter group is any one of a narrow-band filter, a high-pass and low-pass combined filter; the barrel lens is any one of achromatic lenses.

[0017] Preferably, the linear polarizer is any one of a crystal polarizer, a thin-film polarizer, and a plate polarizer, and the linear polarizer is blackened along the transmission axis to block half of it, allowing only half of the polarizer to transmit light.

[0018] Preferably, the fluorescence spectrum analysis device based on a solid-state electron spin ensemble further includes a position adjustment unit for adjusting the position state of the diamond. The position adjustment unit includes:

[0019] A three-axis displacement stage, which includes three position adjustment mechanisms for adjusting the positions of the carrier stage thereon in the X, Y, and Z directions in space respectively;

[0020] An angle adjustment stage, which is installed on the carrier stage at the top of the three-axis displacement stage;

[0021] The angle adjustment stage includes:

[0022] A box body, which is placed above the carrier stage. Baffles are arranged on both sides of the box body, and the baffles are connected to the side surface of the carrier stage through locking bolts;

[0023] A support rod is connected between the upper part of the box body and the side surface of the bearing platform, and the support rod is inclined.

[0024] A first motor is installed inside the box body, and the output end of the first motor extends vertically upward.

[0025] A rotating sleeve is rotatably connected to the top end of the box body, and the rotating sleeve is connected to the output end of the first motor.

[0026] A first adjusting shaft is coaxially connected inside the rotating sleeve. A clamping groove is provided on the first adjusting shaft, and a clamping block is correspondingly provided on the inner wall of the rotating sleeve. The first adjusting shaft rotates synchronously with the rotating sleeve. Lugs are symmetrically arranged on both sides of the first adjusting shaft.

[0027] Two rotating frames are symmetrically arranged on both sides of the first adjusting shaft. The rotating frame includes a first arm, a second arm and a third arm connected in sequence. The first arm is arranged at the bottom end of the rotating frame and is connected to the lug. The third arm extends towards the center of the equipment. A transmission groove is provided in one of the third arms, and a second motor is provided in the transmission groove. The output shaft of the second motor extends into the mounting hole at the end of the third arm.

[0028] A diamond frame is provided with a groove for accommodating diamonds on the inner side. Second adjusting shafts are provided on both sides of the diamond frame, and the second adjusting shafts extend into the mounting holes and are connected to the output shaft of the second motor.

[0029] The present invention provides a fluorescence spectrum analysis method based on a solid-state electron spin ensemble. Using the fluorescence spectrum analysis device based on a solid-state electron spin ensemble as described above, it includes:

[0030] The laser modulation unit converts the continuous laser generated by the laser into a horizontally polarized pulsed laser beam through a Glan-Taylor prism and an acousto-optic modulator. The generated beam is incident on the spatial light modulator for modulation after passing through an expansion lens and a collimating lens, and then enters the confocal unit after passing through a spatial filter and a half-wave plate.

[0031] The beam enters the dichroic mirror in the confocal unit and is reflected into the focusing lens, and the beam is focused on the diamond NV color center with solid-state electron spin. The spin state of the electrons is controlled by a microwave antenna. The fluorescence generated by the stimulated emission of the diamond NV color center electrons is collected by the focusing lens and transmitted from the dichroic mirror to the fluorescence processing unit.

[0032] The fluorescence is transmitted to the filter group in the fluorescence processing unit, and then passes through a sleeve lens and a lens to a linear polarizer, and finally is relayed to the camera by a Bertrand lens.

[0033] Compared with the prior art, the present invention at least includes the following beneficial effects:

[0034] A fluorescence spectrum analysis device and method based on a solid-state electron spin ensemble provided by the present invention uses a spatial light modulator and cooperates with a half-wave plate to excite fluorescence signals in certain axial directions while suppressing fluorescence signals in other axial directions; meanwhile, in the fluorescence Fourier plane, signal selection is performed through a linear polarizer, so that the fluorescence signal relayed by the Bertrand lens is the fluorescence signal generated in the specified axial direction; the fluorescence generated by NV color centers in different axial directions is distinguished at the fluorescence level, providing an idea and method for the miniaturization of quantum detection devices for NV color centers and the removal of bias magnetic fields.

[0035] A fluorescence spectrum analysis device and method based on a solid-state electron spin ensemble according to the present invention. Other advantages, objectives, and features of the present invention will be partially reflected by the following description and partially understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0037] Figure 1 is a structural block diagram of a fluorescence spectrum analysis device based on a solid-state electron spin ensemble according to the present invention;

[0038] Figure 2 is a structural block diagram of the laser modulation unit in the present invention;

[0039] Figure 3 is a structural block diagram of the confocal unit in the present invention;

[0040] Figure 4 is a structural block diagram of the fluorescence processing unit in the present invention;

[0041] Figure 5 is a schematic structural diagram of the position adjustment unit in the present invention;

[0042] Figure 6 is a side view of the angle adjustment stage in the present invention;

[0043] Figure 7 is a schematic structural diagram of the box body in the present invention;

[0044] Figure 8 is a schematic structural diagram of the rotating frame in the present invention.

[0045] In the figure: 10. Laser modulation unit; 20. Confocal unit; 30. Fluorescence processing unit; 101. Laser; 102. Green Taylor prism; 103. Acousto-optic modulator; 104. Beam expander lens; 105. Collimating lens; 106. Spatial light modulator; 107. Spatial filter; 108. Half-wave plate; 201. Dichroic mirror; 202. Focusing lens; 203. Diamond; 204. Microwave antenna; 301. Filter set; 302. Sleeve lens; 303. Lens; 304. Linear polarizer; 305. Bertrand lens; 306. Camera; 401. Three-axis displacement stage; 402. Carrier stage; 403. Box body; 404. Baffle; 405. Locking bolt; 406. Support rod; 407. First motor; 408. Rotating sleeve; 409. First adjustment shaft; 410. Card slot; 411. Lug; 412. Rotating frame; 413. First arm; 414. Second arm; 415. Third arm; 416. Transmission slot; 417. Second motor; 418. Mounting hole; 419. Diamond frame; 420. Second adjustment shaft. Detailed implementation manners

[0046] The following further elaborates on the present invention in detail in conjunction with the accompanying drawings and embodiments, so that those skilled in the art can implement it with reference to the text of the specification.

[0047] It should be understood that terms such as "having", "comprising", and "including" used herein do not exclude the presence or addition of one or more other elements or their combinations.

[0048] Embodiment 1:

[0049] As Figures 1 - 4 shown, the present invention provides a fluorescence spectroscopy analysis device based on a solid-state electron spin ensemble, including:

[0050] A laser modulation unit 10, a confocal unit 20, and a fluorescence processing unit 30;

[0051] The laser modulation unit 10 includes a laser 101, a Green Taylor prism 102, an acousto-optic modulator 103, a beam expander lens 104, a collimating lens 105, a spatial light modulator 106, a spatial filter 107, and a half-wave plate 108 arranged in sequence;

[0052] The confocal unit 20 includes a dichroic mirror 201, a focusing lens 202, a diamond 203, and a microwave antenna 204 arranged in sequence; The diamond 203 has an NV color center with solid-state electron spin;

[0053] The fluorescence processing unit 30 includes a filter set 301, a sleeve lens 302, a lens 303, a linear polarizer 304, a Bertrand lens 305, and a camera 306 arranged in sequence.

[0054] Among them, the laser 101 is set to be any one of a semiconductor laser, a gas laser, a solid-state laser, and a laser diode, and the wavelength of the laser 101 is less than 637 nm.

[0055] Among them, the main material of the Glan-Taylor prism 102 is a rhombohedral hexahedron crystal of CaCO3; the materials of the beam expander lens 104, the collimating lens 105, the lens 303, and the Bertrand lens 305 are any one of optical glass, ultraviolet fused silica, calcium fluoride, germanium, silicon, and zinc selenide.

[0056] Among them, the acousto-optic modulator 103 is used to control the change of the laser beam intensity and load information on the optical frequency carrier; the spatial light modulator 106 is any one of phase-type airborne light modulators; the spatial filter 107 is any one of spatial filters composed of two lenses with the same focal length and a diaphragm.

[0057] Among them, the half-wave plate 108 is a kind of birefringent crystal.

[0058] Among them, the dichroic mirror 201 is any one of the anti-green and red-transmitting dichroic mirror series, and the focusing lens 202 is any one of oil immersion objectives.

[0059] Among them, the diamond 203 is a kind of diamond with a high concentration of NV color centers.

[0060] Among them, the microwave antenna 204 is any one of a PCB antenna, a coplanar waveguide antenna, and a planar waveguide antenna.

[0061] Among them, the filter set 301 is any one of a narrowband filter, a combination of a high-pass and a low-pass filter; the lens barrel lens 302 is any one of achromatic lenses.

[0062] Among them, the linear polarizer 304 is any one of a crystal polarizer, a thin film polarizer, and a plate polarizer, and the linear polarizer 304 is blackened along the transmission axis to block half, allowing only half of the polarizer to transmit light.

[0063] Among them, the camera 306 is any one of a CMOS, a area array CCD, and an industrial camera.

[0064] The present invention also provides a fluorescence spectrum analysis method based on a solid-state electron spin ensemble, using the fluorescence spectrum analysis device based on a solid-state electron spin ensemble described above, including:

[0065] The laser modulation unit 10 converts the continuous laser generated by the laser 101 into a horizontally polarized pulsed laser beam through the Glan-Taylor prism 102 and the acousto-optic modulator 103. The generated beam is incident on the spatial light modulator 106 through the beam expander lens 104 and the collimating lens 105 for modulation, and then enters the confocal unit 20 after passing through the spatial filter 107 and the half-wave plate 108;

[0066] The light beam enters the dichroic mirror 201 in the confocal unit 20 and is reflected into the focusing lens 202, which focuses the light beam onto the diamond 203 NV center with solid-state electron spin. The spin state of the electrons is controlled by the microwave antenna 204. The fluorescence generated by the stimulated emission of the electrons in the diamond 203 NV center is collected by the focusing lens 202 and transmitted from the dichroic mirror 201 to the fluorescence processing unit 30.

[0067] The fluorescence is transmitted to the filter set 301 in the fluorescence processing unit 30, then passes through the sleeve lens 302 and the lens 303 to the linear polarizer 304, and finally is relayed to the camera 306 by the Bertrand lens 305.

[0068] The working principle and beneficial effects of the above technical solution are as follows:

[0069] A fluorescence spectrum analysis device based on a solid-state electron spin ensemble provided by the present invention adopts the above analysis method. In the analysis device, a spatial light modulator 106 is used, which cooperates with a half-wave plate 108 to excite fluorescence signals in certain axial directions while suppressing fluorescence signals in other axial directions. At the same time, in the fluorescence Fourier plane, signal selection is performed through the linear polarizer 304, so that the fluorescence signal relayed by the Bertrand lens 305 is the fluorescence signal generated in the specified axial direction. Distinguishing the fluorescence generated by NV centers in different axial directions at the fluorescence level provides an idea and method for the miniaturization of the quantum detection device for NV centers and the removal of the bias magnetic field.

[0070] Embodiment 2:

[0071] As Figures 5 - 8 shown, on the basis of the above Embodiment 1, the fluorescence spectrum analysis device based on a solid-state electron spin ensemble further includes a position adjustment unit for adjusting the position state of the diamond 203. The position adjustment unit includes:

[0072] A three-axis displacement stage 401, which includes three position adjustment mechanisms for adjusting the positions of the upper carrier 402 thereon in the X, Y, and Z directions in space respectively;

[0073] An angle adjustment stage, which is installed on the carrier 402 at the top of the three-axis displacement stage 401;

[0074] The angle adjustment stage includes:

[0075] A box body 403, which is placed above the carrier 402. Baffles 404 are arranged on both sides of the box body 403, and the baffles 404 are connected to the side surface of the carrier 402 through locking bolts 405;

[0076] The support rod 406 is connected between the upper part of the box body 403 and the side surface of the bearing platform 402, and the support rod 406 is inclined.

[0077] The first motor 407 is installed inside the box body 403, and the output end of the first motor 407 extends vertically upward.

[0078] The rotating sleeve 408 is rotatably connected to the top end of the box body 403, and the rotating sleeve 408 is connected to the output end of the first motor 407.

[0079] The first adjusting shaft 409 is coaxially connected inside the rotating sleeve 408. A clamping groove 410 is provided on the first adjusting shaft 409, and a clamping block is correspondingly provided on the inner wall of the rotating sleeve 408. The first adjusting shaft 409 rotates synchronously with the rotating sleeve 408. Lugs 411 are symmetrically provided on both sides of the first adjusting shaft 409.

[0080] The rotating frames 412 are symmetrically arranged on both sides of the first adjusting shaft 409. Each rotating frame 412 includes a first arm 413, a second arm 414, and a third arm 415 connected in sequence. The first arm 413 is arranged at the bottom end of the rotating frame 412 and is connected to the lug 411. The third arm 415 extends towards the center of the device. A transmission groove 416 is provided inside one of the third arms 415, and a second motor 417 is provided inside the transmission groove 416. The output shaft of the second motor 417 extends into the mounting hole 418 at the end of the third arm 415.

[0081] The diamond frame 419 is provided with a groove for accommodating the diamond 203 on the inner side. Second adjusting shafts 420 are provided on both sides of the diamond frame 419, and the second adjusting shafts 420 extend into the mounting hole 418 and are connected to the output shaft of the second motor 417.

[0082] The working principle and beneficial effects of the above technical solution are as follows:

[0083] The square diamond 429 is installed in the groove on the inner side of the diamond frame 419. The light is focused on the diamond 203 through a focusing lens. The position of the diamond 203 is adjusted by a three-axis displacement stage 401. The three-axis displacement stage 401 is a prior art. The three-axis displacement stage 401 includes three adjustment directions, namely the X direction, the Y direction, and the Z direction in space. The X direction is set as the direction parallel to the incident light, the Y direction is set as the direction horizontally perpendicular to the incident light, and the Z direction is set as the vertical direction. Through the three position adjustment mechanisms of the three-axis displacement stage 401, the diamond 203 is moved in three directions, thereby adjusting the relative position between the diamond 203 and the focusing lens. The adjustment accuracy of the three-axis displacement stage 401 is at the millimeter level.

[0084] When angle adjustment is required, start the first motor 407 to drive the rotating sleeve 408 to rotate. The rotating sleeve 408 is connected to the block through the card slot 410 in a limiting manner, driving the first adjusting shaft 409 to rotate synchronously. The first adjusting shaft 409 drives the diamond frame 419 above to rotate through the rotating frame 412, thereby realizing the angle adjustment of the diamond 203 around the center line of the first adjusting shaft 409. Start the second motor 417 to rotate its output shaft, driving the second adjusting shaft 420 to rotate synchronously, so that the diamond frame 419 rotates, thereby realizing the angle adjustment of the diamond 203 around the center line of the second adjusting shaft 420.

[0085] Through the above structural design, during spectral analysis, the position state of the diamond 203 is adjusted by the position adjustment unit; the three-axis displacement stage 401 is used to adjust the diamond 203 in the up, down, left, right, front, and back directions in space, and the adjustment accuracy is millimeter-level; at the same time, an angle adjustment stage is used to adjust the angles of the diamond 203 in two directions to realize the adjustment of the incident light angle on the diamond 203. On the one hand, it ensures the relative position accuracy between the diamond 203 and the focusing lens, enabling the light to accurately enter along the preset path and reducing the influence of position error on the accuracy of fluorescence spectral analysis. On the other hand, it can analyze the diamond 203 with different incident light angles, greatly improving the analysis ability of the analysis system.

[0086] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present invention.

[0087] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or communicable with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0088] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the field, additional modifications can be easily made. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrated examples described herein.

Claims

1. A fluorescence spectrum analysis device based on a solid-state electron spin ensemble, characterized in that: include: A laser modulation unit (10), a confocal unit (20) and a fluorescence processing unit (30); The laser modulation unit (10) comprises a laser (101), a Green Taylor prism (102), an acousto-optic modulator (103), a beam expander lens (104), a collimator lens (105), a spatial light modulator (106), a spatial filter (107) and a half-wave plate (108) which are arranged in sequence; The confocal unit (20) comprises a dichroic mirror (201), a focusing lens (202), a diamond (203) and a microwave antenna (204) which are arranged in sequence; the diamond (203) has a NV color center of solid-state electron spin; The fluorescence processing unit (30) comprises a filter set (301), a sleeve lens (302), a lens (303), a linear polarizing plate (304), a Bertrand lens (305) and a camera (306) which are arranged in sequence.

2. A fluorescence spectrum analysis device based on solid-state electron spin ensemble according to claim 1, characterized in that: The laser (101) is configured as any one of a semiconductor laser, a gas laser, a solid-state laser, and a laser diode, and the wavelength of the laser (101) is less than 637 nm.

3. A fluorescence spectrum analysis device based on solid-state electron spin ensemble according to claim 1, characterized in that: The main material of the Green Taylor prism (102) is rhombohedral crystal of CaCO3; the material of the beam expander lens (104), the collimator lens (105), the lens (303) and the Bertrand lens (305) is any one of optical glass, ultraviolet fused quartz, calcium fluoride, germanium, silicon and zinc selenide.

4. A fluorescence spectrum analysis device based on solid-state electron spin ensemble according to claim 1, characterized in that: The acousto-optic modulator (103) is used to control the intensity change of the laser beam and load information onto the optical frequency carrier; the spatial light modulator (106) is any one of the phase-type airborne light modulators; and the spatial filter (107) is any one of the spatial filters composed of two lenses with the same focal length and an aperture.

5. The fluorescence spectrum analysis device based on solid-state electron spin ensemble according to claim 1, characterized in that: The half-wave plate (108) is a type of birefringent crystal.

6. The fluorescence spectrum analysis device based on solid-state electron spin ensemble according to claim 1, characterized in that: The dichroic mirror (201) is any one of a series of dichroic mirrors that reflect green and transmit red, and the focusing lens (202) is any one of oil-immersion objective lenses.

7. The fluorescence spectrum analysis device based on solid-state electron spin ensemble according to claim 1, characterized in that: The microwave antenna (204) is any one of a PCB antenna, a coplanar waveguide antenna and a planar waveguide antenna.

8. The fluorescence spectrum analysis device based on solid-state electron spin ensemble according to claim 1, characterized in that: The filter group (301) is any one of a narrow-band filter, a high-pass filter and a low-pass filter combination; and the lens barrel lens (302) is any one of an achromatic lens.

9. The fluorescence spectrum analysis device based on solid-state electron spin ensemble according to claim 1, characterized in that: The linear polarizer (304) is any one of a crystal polarizer, a thin film polarizer and a plate polarizer, and the linear polarizer (304) is blackened along the light transmission axis to block half of it, allowing only half of the polarizer to transmit light.

10. A fluorescence spectrum analysis method based on a solid-state electron spin ensemble, using a fluorescence spectrum analysis device based on a solid-state electron spin ensemble according to any one of claims 1 to 9, characterized in that: include: The laser modulation unit (10) converts the continuous laser light generated by the laser (101) into a horizontally polarized pulsed laser beam through a Green Taylor prism (102) and an acousto-optic modulator (103); the generated light beam passes through a beam expander lens (104) and a collimator lens (105) and is incident on a spatial light modulator (106) for modulation, and then passes through a spatial filter (107) and a half-wave plate (108) and enters a confocal unit (20); The light beam enters the dichroic mirror (201) in the confocal unit (20), is reflected to the focusing lens (202), and is focused to the NV color center of the diamond (203) having solid-state electron spins, and the spin state of the electrons is controlled by the microwave antenna (204); the fluorescence generated by the stimulated radiation of the electrons in the NV color center of the diamond (203) is collected by the focusing lens (202) and transmitted from the dichroic mirror (201) to the fluorescence processing unit (30); The fluorescence is transmitted to the filter set (301) in the fluorescence processing unit (30), then passes through the tube lens (302) and lens (303) to the linear polarizer (304), and finally is relayed to the camera (306) by the Bertrand lens (305).

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