A fluorescence spectrum analysis device and method based on solid-state electronic spin ensemble

Abstract

The application relates to the technical field of spectral analysis, and discloses a fluorescence spectral analysis device and method based on a solid-state electron spin ensemble, wherein the spectral analysis device comprises a laser modulation unit, a confocal unit and a fluorescence processing unit; the laser modulation unit comprises a laser, a Griesinger-Taylor prism, an acousto-optic modulator, a beam expander, a collimating lens, a spatial light modulator, a spatial filter and a half-wave plate which are sequentially arranged; the confocal unit comprises a dichroic mirror, a focusing lens, a diamond and a microwave antenna which are sequentially arranged; the diamond has a solid-state electron spin NV color center; and the fluorescence processing unit comprises a filter group, a sleeve lens, a lens, a linear polarizer, a Bertin lens and a camera which are sequentially arranged. The application distinguishes the fluorescence generated by different axial NV color centers from the fluorescence level, and provides a thought and method for the miniaturization and bias magnetic field removal of a quantum detection device of the NV color center.

Description

Technical Field

[0001] This invention relates to the field of spectroscopic analysis technology, and more specifically, to a fluorescence spectroscopic analysis device and method based on a solid-state electron spin ensemble. Background Technology

[0002] Leveraging the significant advantage of quantum sensing technology in surpassing the limits of classical measurement, various measurement devices based on electron spin and quantum effects are experiencing rapid development. To meet the demands of micro-scale applications, researchers are focusing on solid-state quantum spin materials with high spin density that do not require a physical chamber. In recent years, measurement schemes based on solid-state electron spin have gained increasing attention, with diamond-embedded nitrogen-vacancy (NV) centers being the fastest-growing solid-state spin material. High-precision measurements can generally be achieved by detecting the spin geometry phase accumulated during the rotation of NV centers. Since NV center quantum sensing systems require the combined assembly of components such as optical excitation detection and microwave manipulation, traditional measurement techniques can only separate the fluorescence information of NV centers along the four axes by combining a solid-state spin sample containing NV centers with a bias magnetic field. This introduces new magnetic field interference, increases the system size, and hinders the miniaturization and portability of existing systems.

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

[0004] The summary section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. The summary section of this invention is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

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

[0006] Laser modulation unit, confocal unit, and fluorescence processing unit;

[0007] The laser modulation unit includes a laser, a Green Taylor prism, an acousto-optic modulator, a beam expander, a collimating lens, a spatial light modulator, a spatial filter, and a half-wave plate arranged sequentially.

[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 arranged in sequence.

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

[0011] Preferably, the main material of the Green Taylor prism is an orthorhombic hexahedral crystal of CaCO3; the materials of the beam expander, collimating lens, lens and 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 intensity change of the laser beam and load information onto the optical frequency carrier; the spatial optical modulator is any type of phase-type spatial optical modulator; and the spatial filter is any type of spatial filter composed of two lenses with the same focal length and an aperture.

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

[0014] Preferably, the dichroic mirror is any one of the series of reverse green and red dichroic mirrors, and the focusing lens is any one of the 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 narrowband filter, a high-pass filter and a low-pass filter combination; the sleeve lens is any one of an achromatic lens.

[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 light transmission axis to block half of it, allowing only half of the polarizer to transmit light.

[0018] Preferably, the fluorescence spectroscopy 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 comprising:

[0019] The three-axis displacement stage includes three position adjustment mechanisms, which are used to adjust the position of the upper support platform in the X, Y and Z directions in space, respectively.

[0020] Angle adjustment table, which is installed on the support platform at the top of the three-axis displacement table;

[0021] The angle adjustment table includes:

[0022] The box body is placed on top of the support platform, and baffles are installed on both sides of the box body. The baffles are connected to the sides of the support platform by locking bolts.

[0023] The strut connects the upper part of the box body to the side of the support platform, and the strut is set at an angle;

[0024] The first motor is installed inside the housing, and the output end of the first motor extends vertically upward.

[0025] The rotating sleeve is rotatably connected to the top of the housing and is connected to the output end of the first motor.

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

[0027] The rotating frame has two rotating frames 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 located at the bottom of the rotating frame and connected to a lug. The third arm extends toward the center of the equipment. A transmission groove is provided in one of the third arms. 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] The diamond frame has a groove on its inner side to accommodate the diamond, and a second adjusting shaft is provided on both sides of the diamond frame. The second adjusting shaft extends into the mounting hole and connects to the output shaft of the second motor.

[0029] This invention provides a fluorescence spectroscopy analysis method based on a solid-state electron spin ensemble, employing the aforementioned fluorescence spectroscopy analysis device based on a solid-state electron spin ensemble, comprising:

[0030] The laser modulation unit converts the continuous laser generated by the laser into a horizontally polarized pulsed laser beam through a Green Taylor prism and an acousto-optic modulator. The resulting beam is then modulated by a beam expander and a collimator before entering the spatial light modulator. After passing through a spatial filter and a half-wave plate, the beam enters the confocal unit.

[0031] The light beam enters the dichroic mirror in the confocal unit and is reflected into the focusing lens, which focuses the light beam onto the diamond NV center with solid-state electron spin. The spin state of the electrons is controlled by the microwave antenna. The fluorescence generated by the stimulated emission of electrons in the diamond NV center 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, then through the sleeve lens and lens to the linear polarizer, and finally relayed to the camera by the Bertrand lens.

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

[0034] This invention provides a fluorescence spectroscopy analysis device and method based on a solid-state electron spin ensemble. It uses a spatial light modulator, in conjunction with a half-wave plate, to excite fluorescence signals along certain axes while suppressing fluorescence signals along others. Simultaneously, in the fluorescence Fourier plane, a linear polarizer is used for signal selection, ensuring that the fluorescence signal relayed by the Bertrand lens is generated along a specific axis. This distinguishes the fluorescence generated by NV centers along different axes at the fluorescence level, providing a concept and method for miniaturizing quantum detection devices for NV centers and removing bias magnetic fields.

[0035] The present invention provides a fluorescence spectroscopy analysis device and method based on a solid-state electron spin ensemble. Other advantages, objectives and features of the present invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of the present invention. Attached Figure Description

[0036] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

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

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

[0039] Figure 3 This is a structural block diagram of the co-focusing unit of the present invention;

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

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

[0042] Figure 6 This is a side view of the angle adjustment platform in this invention;

[0043] Figure 7 This is a schematic diagram of the box structure in this invention;

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

[0045] In the diagram: 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 group; 302. Sleeve lens; 303. Lens; 304. Linear polarizer; 305. Bertrand lens; 306. Camera; 401. Three-axis displacement stage; 402. Support stage; 403. Housing; 404. Baffle; 405. Locking bolt; 406. Support rod; 407. First motor; 408. Rotating sleeve; 409. First adjusting shaft; 410. Slot; 411. Lug; 412. Rotating frame; 413. First support arm; 414. Second support arm; 415. Third support arm; 416. Transmission groove; 417. Second motor; 418. Mounting hole; 419. Diamond frame; 420. Second adjusting shaft. Detailed Implementation

[0046] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments, so that those skilled in the art can implement it based on the description.

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

[0048] Example 1: As Figures 1-4 As shown, the present invention provides a fluorescence spectroscopy analysis device based on a solid-state electron spin ensemble, comprising:

[0049] Laser modulation unit 10, confocal unit 20 and fluorescence processing unit 30;

[0050] The laser modulation unit 10 includes a laser 101, a Green Taylor prism 102, an acousto-optic modulator 103, a beam expander 104, a collimating lens 105, a spatial light modulator 106, a spatial filter 107, and a half-wave plate 108 arranged sequentially.

[0051] The confocal unit 20 includes a dichroic mirror 201, a focusing lens 202, a diamond 203, and a microwave antenna 204 arranged sequentially; the diamond 203 has an NV color center with solid-state electron spin;

[0052] The fluorescence processing unit 30 includes a filter group 301, a sleeve lens 302, a lens 303, a linear polarizer 304, a Bertrand lens 305, and a camera 306 arranged sequentially.

[0053] The laser 101 is configured as any one of a semiconductor laser, a gas laser, a solid-state laser, or a laser diode, and the wavelength of the laser 101 is less than 637nm.

[0054] Among them, the main material of the Green Taylor prism 102 is the orthorhombic hexahedral crystal of CaCO3; the materials of the beam expander lens 104, collimating lens 105, lens 303 and Bertrand lens 305 are any one of optical glass, ultraviolet fused silica, calcium fluoride, germanium, silicon and zinc selenide.

[0055] Among them, the acousto-optic modulator 103 is used to control the intensity change of the laser beam and load the information onto the optical frequency carrier; the spatial optical modulator 106 is any type of phase-type spatial optical modulator; the spatial filter 107 is any type of spatial filter composed of two lenses with the same focal length and an aperture.

[0056] Among them, the half-wave plate 108 is a type of birefringent crystal.

[0057] Among them, the dichroic mirror 201 is any one of the series of dichroic mirrors that reflect green and transmit red, and the focusing lens 202 is any one of the oil immersion objectives.

[0058] Diamond 203 is a type of diamond with high concentration of NV color centers.

[0059] Among them, microwave antenna 204 can be any one of PCB antenna, coplanar waveguide antenna and planar waveguide antenna.

[0060] Among them, the filter group 301 is any one of a narrowband filter, a high-pass filter and a low-pass filter combination; the sleeve lens 302 is any one of an achromatic lens.

[0061] Among them, the linear polarizer 304 is any one of crystal polarizer, thin film polarizer and 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.

[0062] Among them, camera 306 can be any of CMOS, area CCD, and industrial camera.

[0063] This invention also provides a fluorescence spectroscopy analysis method based on a solid-state electron spin ensemble, employing the aforementioned fluorescence spectroscopy analysis device based on a solid-state electron spin ensemble, comprising:

[0064] The laser modulation unit 10 converts the continuous laser generated by the laser 101 into a horizontally polarized pulsed laser beam through the Green Taylor prism 102 and the acousto-optic modulator 103. The generated beam is then modulated by the beam expander 104 and the collimator 105 and then enters the spatial light modulator 106. After passing through the spatial filter 107 and the half-wave plate 108, it enters the confocal unit 20.

[0065] 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 203NV color center, which has a solid electron spin. The spin state of the electron is controlled by the microwave antenna 204. The fluorescence generated by the stimulated emission of the electrons in the diamond 203NV color center is collected by the focusing lens 202 and transmitted from the dichroic mirror 201 to the fluorescence processing unit 30.

[0066] Fluorescence is transmitted to the filter group 301 in the fluorescence processing unit 30, then through the sleeve lens 302 and lens 303 to the linear polarizer 304, and finally relayed to the camera 306 by the Bertrand lens 305.

[0067] The working principle and beneficial effects of the above technical solution are as follows:

[0068] This invention provides a fluorescence spectroscopy analysis device based on a solid-state electron spin ensemble. Using the aforementioned analysis method, the device employs a spatial light modulator 106, which, in conjunction with a half-wave plate 108, excites fluorescence signals along certain axes while suppressing fluorescence signals along others. Simultaneously, in the fluorescence Fourier plane, a linear polarizer 304 selects the signal, ensuring that the fluorescence signal relayed by the Bertrand lens 305 is generated along a specific axis. This distinguishes the fluorescence generated by NV centers along different axes at the fluorescence level, providing a method and approach for miniaturizing quantum detection devices for NV centers and removing bias magnetic fields.

[0069] Example 2: Figures 5-8 As shown, based on Embodiment 1 above, the fluorescence spectroscopy analysis device based on a solid-state electron spin ensemble further includes a position adjustment unit for adjusting the position state of diamond-203. The position adjustment unit includes:

[0070] The three-axis displacement stage 401 includes three position adjustment mechanisms, which are used to adjust the position of the bearing platform 402 in the X, Y and Z directions in space, respectively.

[0071] An angle adjustment table is installed on the support platform 402 at the top of the three-axis displacement table 401;

[0072] The angle adjustment table includes:

[0073] Box 403 is placed on top of support platform 402. Baffles 404 are provided on both sides of box 403. Baffles 404 are connected to the side of support platform 402 by locking bolts 405.

[0074] Support rod 406 connects the upper part of the box 403 and the side of the support platform 402. The support rod 406 is set at an angle.

[0075] The first motor 407 is installed inside the housing 403, and the output end of the first motor 407 extends vertically upward.

[0076] Rotary sleeve 408 is rotatably connected to the top of housing 403 and is connected to the output end of first motor 407.

[0077] The first adjusting shaft 409 is coaxially connected inside the rotating sleeve 408. The first adjusting shaft 409 is provided with a slot 410, and the inner wall of the rotating sleeve 408 is provided with a corresponding locking block. 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.

[0078] Two rotating frames 412 are symmetrically arranged on both sides of the first adjusting shaft 409. Each rotating frame 412 includes a first support arm 413, a second support arm 414, and a third support arm 415 connected in sequence. The first support arm 413 is located at the bottom of the rotating frame 412 and is connected to a lug 411. The third support arm 415 extends toward the center of the equipment. A transmission groove 416 is provided in one of the third support arms 415. A second motor 417 is provided in the transmission groove 416. The output shaft of the second motor 417 extends into the mounting hole 418 at the end of the third support arm 415.

[0079] The diamond frame 419 has a groove on its inner side to accommodate the diamond 203. The diamond frame 419 has a second adjusting shaft 420 on both sides. The second adjusting shaft 420 extends into the mounting hole 418 and is connected to the output shaft of the second motor 417.

[0080] The working principle and beneficial effects of the above technical solution are as follows:

[0081] A square diamond 429 is installed in a groove inside the diamond frame 419. Light is focused onto the diamond 203 by 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 existing technology and includes three adjustment directions: X, Y, and Z in space. The X direction is set parallel to the incident light, the Y direction is set perpendicular to the horizontal direction of the incident light, and the Z direction is set vertically. 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 of the diamond 203 and the focusing lens. The adjustment accuracy of the three-axis displacement stage 401 is at the millimeter level.

[0082] When angle adjustment is required, the first motor 407 is started to drive the rotating sleeve 408 to rotate. The rotating sleeve 408 is connected to the limiting block through the slot 410, which drives 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 achieving angle adjustment of the diamond 203 around the center line of the first adjusting shaft 409. The second motor 417 is started to rotate its output shaft, which drives the second adjusting shaft 420 to rotate synchronously, causing the diamond frame 419 to rotate, thereby achieving angle adjustment of the diamond 203 around the center line of the second adjusting shaft 420.

[0083] Through the above structural design, during spectral analysis, the position of the diamond 203 is adjusted by a position adjustment unit; a three-axis displacement stage 401 is used to adjust the diamond 203 in space in the up, down, left, right, forward, and backward directions with millimeter-level precision; simultaneously, an angle adjustment stage is used to adjust the angles of the diamond 203 in two directions, thereby adjusting the angle of the incident light on the diamond 203. On the one hand, this ensures the accuracy of the relative position of the diamond 203 and the focusing lens, allowing the light to accurately enter along a preset path, reducing the impact of positional errors on the accuracy of fluorescence spectral analysis; on the other hand, it enables analysis based on different incident angles of light on the diamond 203, significantly improving the analytical capabilities of the system.

[0084] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0085] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0086] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. Other modifications can be easily made by those skilled in the art. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A fluorescence spectroscopic analysis device based on a solid-state electron spin ensemble, characterized in that, include: Laser modulation unit (10), confocal unit (20) and fluorescence processing unit (30); The laser modulation unit (10) includes a laser (101), a Green Taylor prism (102), an acousto-optic modulator (103), a beam expander (104), a collimating lens (105), a spatial light modulator (106), a spatial filter (107), and a half-wave plate (108) arranged sequentially. The confocal unit (20) includes a dichroic mirror (201), a focusing lens (202), a diamond (203), and a microwave antenna (204) arranged sequentially; the diamond (203) has an NV color center with solid-state electron spin; The fluorescence processing unit (30) includes a filter group (301), a sleeve lens (302), a lens (303), a linear polarizer (304), a Bertrand lens (305), and a camera (306) arranged in sequence. The laser modulation unit (10) converts the continuous laser 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 beam is then modulated by a beam expander (104) and a collimator (105) in a spatial light modulator (106), and then enters the confocal unit (20) after passing through a spatial filter (107) and a half-wave plate (108). 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 electron spin. The spin state of the electron 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). The fluorescence is transmitted to the filter group (301) in the fluorescence processing unit (30), then through the sleeve lens (302) and lens (303) to the linear polarizer (304), and finally relayed to the camera (306) by the Bertrand lens (305).

2. The fluorescence spectroscopic analysis device based on a 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, or a laser diode, and the wavelength of the laser (101) is less than 637 nm.

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

4. The fluorescence spectroscopic analysis device based on a 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 optical modulator (106) is any type of phase-type spatial optical modulator; the spatial filter (107) is any type of spatial filter composed of two lenses with the same focal length and an aperture.

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

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

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

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

9. A fluorescence spectroscopic analysis device based on a solid-state electron spin ensemble according to claim 1, characterized in that, The linear polarizer (304) is any one of crystal polarizer, thin film polarizer and 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 spectroscopic analysis method based on a solid-state electron spin ensemble, employing the fluorescence spectroscopic analysis device based on a solid-state electron spin ensemble as described in any one of claims 1-9, characterized in that, include: The laser modulation unit (10) converts the continuous laser 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 beam is then modulated by a beam expander (104) and a collimator (105) in a spatial light modulator (106), and then enters the confocal unit (20) after passing through a spatial filter (107) and a half-wave plate (108). 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 electron spin. The spin state of the electron 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). The fluorescence is transmitted to the filter group (301) in the fluorescence processing unit (30), then through the sleeve lens (302) and lens (303) to the linear polarizer (304), and finally relayed to the camera (306) by the Bertrand lens (305).

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