A method and system for quantum control emission of array vortex light based on orbital angular momentum distribution compensation

Abstract

This invention relates to a quantum-controlled emission method and system for arrayed vortex beams based on orbital angular momentum distribution compensation, belonging to the field of lidar technology. The invention addresses the problem of low imaging accuracy of existing arrayed vortex beams in complex environments. The method includes: S1, transmitting incident laser light to a spatial light modulator screen according to a preset array distribution using a beam splitter, and loading a preset phase hologram onto the spatial light modulator to obtain arrayed vortex beams with different orbital angular momentum distributions; S2, passing the arrayed vortex beams through simulated atmospheric turbulence to obtain a distorted arrayed vortex beam, and obtaining an array-type compensated phase distribution using a phase retrieval algorithm based on the intensity distribution of the original arrayed vortex beam and the intensity distribution of the distorted arrayed vortex beam; S3, loading the array-type compensated phase distribution obtained in step S2 onto a compensated phase screen to correct the distorted arrayed vortex beam, and then transmitting it to the target for imaging. This invention is used to reduce crosstalk between sub-beams.

Description

Technical Field

[0001] This invention relates to a sub-beam control technique that uses a compensation method to reduce crosstalk between individual sub-beams and improve the ability to resist complex environments, belonging to the field of lidar technology. Background Technology

[0002] Arrayed vortex beam imaging is a novel imaging technique that combines arrayed laser and vortex beam technologies. This gives it the ultrafast imaging performance of arrayed lasers, significantly improving imaging efficiency, and, because a vortex beam is a ring beam with a helical wavefront, each photon carries orbital angular momentum, thus also possessing this dimension. However, in highly complex environments, atmospheric turbulence and random disturbances cause random variations in the refractive index, making arrayed vortex beam imaging susceptible to the influence of complex atmospheric conditions. This results in phenomena such as beam broadening, crosstalk between sub-beams, and intensity and phase distortion, significantly impacting imaging. Therefore, certain compensation methods are needed to reduce crosstalk between sub-beams and improve the ability to withstand complex environments. Summary of the Invention

[0003] To address the problems of beam broadening, crosstalk between sub-beams, and intensity and phase distortion in existing array vortex beams under complex environments, which affect imaging accuracy, this invention provides an array vortex light quantum control emission method and system based on orbital angular momentum distribution compensation.

[0004] The present invention describes a method for controlling the emission of array vortex light based on orbital angular momentum distribution compensation. This method includes the following steps:

[0005] S1. The incident laser is transmitted to the spatial light modulator screen according to the preset array distribution shape using a beam splitter, and a preset phase hologram is loaded on the spatial light modulator to obtain an array vortex beam with different orbital angular momentum distributions. The phases of each sub-beam of the array vortex beam are different, and thus the topological charge of each sub-beam is different.

[0006] S2. The array vortex beam obtained in step S1 is subjected to simulated atmospheric turbulence to obtain a distorted array vortex beam. Based on the light intensity distribution of the original array vortex beam and the light intensity distribution of the distorted array vortex beam, an array-type compensated phase distribution is obtained by using a phase recovery algorithm.

[0007] S3. The array-type compensated phase distribution obtained in step S2 is loaded into the compensated phase screen to correct the distorted array vortex beam and then emitted to the target for imaging.

[0008] Preferably, the preset array distribution shape is honeycomb or rectangular, the honeycomb array is a regular hexagonal array, and the rectangular array is an M×N array.

[0009] Preferably, the beam splitter outputs multiple beams as array sub-beams, which are respectively projected onto the spatial light modulator screen at positions corresponding to each element of the preset array. The phase of each sub-beam is modulated by loading a preset phase hologram, so that the phases of each sub-beam are different, thereby obtaining array vortex beams with different orbital angular momentum distributions.

[0010] Preferably, when the preset array distribution shape is rectangular, the light intensity distribution of the array vortex beam is as follows:

[0011]

[0012]

[0013]

[0014] In the formula: M and N are the number of sub-beams in each row and column of the rectangular array vortex beam, respectively.

[0015] m and n are the row and column numbers of the rectangular array of vortex beams, respectively.

[0016] dx and dy are the horizontal and vertical spacings of adjacent sub-beams, respectively;

[0017] x and y are coordinates in a rectangular coordinate system;

[0018] l is the topological charge number, w(z) is the waist radius, and k is the wave number. To associate the Laguerre polynomials, z is the distance the beam travels along the propagation direction, z R Let be the Rayleigh distance, and i be the imaginary unit.

[0019] Preferably, when the preset array distribution shape is honeycomb, the light intensity distribution of the array vortex beam is as follows:

[0020]

[0021]

[0022]

[0023] The honeycomb-like regular hexagonal structure is obtained by dividing a circle into 6 equal points, where R is the radius of the circle, α0 is the angle between the line connecting two adjacent points and the center of the circle, and the line connecting the center of the circle and the 6 points divides the regular hexagonal structure into six triangles, where h is the triangle number.

[0024] l is the topological charge number, w(z) is the beam waist radius, k is the wavenumber, and z is the distance the beam travels along the propagation direction. R Let i be the Rayleigh distance, and i be the imaginary unit.

[0025] dx and dy are the horizontal and vertical spacings of adjacent sub-beams, respectively;

[0026] x and y are coordinates in a rectangular coordinate system.

[0027] Preferably, the process of correcting the distorted array vortex beam using a phase retrieval algorithm is as follows:

[0028] Step 1: Select the amplitude spectrum E1(x,y) of an ideal optical field without wavefront distortion as the amplitude of the input optical field, and select the ideal spiral phase. As the initial random phase, the input light field for diffraction calculation is

[0029] Step 2, Adjust the light field Diffraction transmission calculations were performed to obtain its transform domain amplitude spectrum A(k). x ,k y ) and phase spectrum Φ(k x ,k y );

[0030] Step 3: Replace A(k) with the distorted vortex beam amplitude spectrum E2(x,y). x ,k y ), thus obtaining the new complex amplitude of the optical field E2(x,y)exp(iΦ(k x ,k y ));

[0031] Step 4: Apply the light field E2(x,y)exp(iΦ(k) x ,k y Perform inverse diffraction operations to obtain the spatial domain amplitude spectrum a(x,y) and phase spectrum H(x,y);

[0032] Step 5: Replace a(x,y) with the amplitude spectrum E1(x,y) of the initial ideal light field to obtain the initial light field expression E1(x,y)exp(iH(x,y)) for the next iteration. The calculation terminates when the iteration condition is met or the defined number of iterations is reached, and the reconstructed vortex beam distortion phase H(x,y) can be obtained.

[0033] Step 6: Obtain the distortion phase of atmospheric turbulence. The twisted phase is an array-type compensated phase distribution;

[0034] Step 7: Transform the obtained distorted phase and load it onto the compensation phase screen to correct the distorted array vortex beam.

[0035] The present invention also provides another technical solution, an array vortex optical quantum control emission system based on orbital angular momentum distribution compensation, the system being used in the aforementioned method, the emission system comprising a laser 1, a multi-optical fiber 2, a polarization controller 3, a first collimator 4, a polarizer 5, a beam splitter 6, a spatial light modulator 7, an atmospheric turbulence phase screen 8, an area array detector 9, a computer 10, a compensation phase screen 11, and a second collimator 12;

[0036] The beam generated by laser 1 is transmitted through different branches of multiple optical fibers 2. The multiple beams are controlled by polarization controller 3, collimator 4 and polarizer 6. After passing through beam splitter 6, the multiple beams are distributed into vortex beams with different spatial positions. They are then hit into the corresponding positions of spatial light modulator 7 in a preset array shape to form an array vortex beam. The phase of any sub-beam in the array vortex beam is modulated by a preset phase hologram. Sub-beams with different topological charges are obtained by adjusting the distribution of the preset phase hologram on the spatial light modulator.

[0037] The array vortex beam is emitted after passing through collimator 12;

[0038] The atmospheric turbulence phase screen 8 is obtained using the power spectrum inversion method. The array vortex beam is passed through the atmospheric turbulence phase screen 8 to simulate the effect of atmospheric turbulence. The distorted array vortex beam after passing through atmospheric turbulence is obtained by the area array detector 9. Then, the phase is corrected by the computer 10 through the phase recovery algorithm and loaded onto the compensation phase screen 11 to correct the array vortex beam. The corrected beam is then directed onto the target module 15.

[0039] The beneficial effects of this invention are as follows: This invention proposes a quantum-controlled emission method. By changing the topological charge of each sub-beam in the arrayed vortex beam and different arrangements of the arrayed vortex beams, and then combining this with a phase retrieval algorithm to correct the beam after atmospheric turbulence distortion, crosstalk between the sub-beams is reduced, effectively increasing the anti-interference capability of the arrayed vortex beam. Then, the arrayed vortex beam is used to image the target, enhancing imaging capabilities in complex environments and improving imaging accuracy.

[0040] Based on the orthogonality between vortex beams with different topological charges, this invention reduces crosstalk between sub-beams by adjusting the different topological charges between adjacent sub-beams, and further reduces crosstalk by adjusting different arrangements of arrayed vortex beams and phase recovery algorithms.

[0041] By modifying the distribution of the phase hologram on the spatial light modulator, different array vortex beam arrangements can be obtained. Different orbital angular momentum distributions can be achieved by changing the topological charge at different positions, reducing crosstalk between sub-beams and enhancing resistance to complex environments. Then, a phase retrieval algorithm is used to correct the distorted array vortex beams, further improving resilience. Attached Figure Description

[0042] Figure 1 This is a block diagram of the array vortex optical quantum control emission system based on orbital angular momentum distribution compensation described in this invention;

[0043] Figure 2 This is a schematic diagram of the intensity distribution of a rectangular array of vortex beams;

[0044] Figure 3 This is a schematic diagram of the intensity distribution of a honeycomb array vortex beam. Detailed Implementation

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0047] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the scope of the invention.

[0048] Specific Implementation Method 1: The following is combined with... Figures 1 to 3 This embodiment describes the array vortex quantum control emission method based on orbital angular momentum distribution compensation. The intensity distribution diagrams of the rectangular array vortex beam and the honeycomb array vortex beam are shown below. Figure 2 and Figure 3As shown, by modifying the topological charge at different locations, the optimal orbital angular momentum distribution to resist complex atmospheric environments can be obtained. Then, a phase retrieval algorithm is used to correct the phase. The compensation process is roughly as follows: the phase hologram of the designed array vortex beam arrangement is loaded into the spatial light modulator, and a beam splitter is used to adjust the distribution position of the incident laser array. Then, by adjusting the hologram distribution at each location, the topological charge of each sub-beam is adjusted to obtain different orbital angular momentum distributions. Based on the light field intensity distribution of the incident beam and the distorted beam, the phase retrieval algorithm is used to obtain the corrected phase distribution, which is then loaded into the compensation phase screen, thereby achieving the correction of the distorted array vortex beam.

[0049] Specifically, this method includes the following steps:

[0050] S1. The incident laser is transmitted to the spatial light modulator screen according to the preset array distribution shape using a beam splitter, and a preset phase hologram is loaded on the spatial light modulator to obtain an array vortex beam with different orbital angular momentum distributions. The phases of each sub-beam of the array vortex beam are different, and thus the topological charge of each sub-beam is different.

[0051] S2. The array vortex beam obtained in step S1 is subjected to simulated atmospheric turbulence to obtain a distorted array vortex beam. Based on the light intensity distribution of the original array vortex beam and the light intensity distribution of the distorted array vortex beam, an array-type compensated phase distribution is obtained by using a phase recovery algorithm.

[0052] S3. The array-type compensated phase distribution obtained in step S2 is loaded into the compensated phase screen to correct the distorted array vortex beam and then emitted to the target for imaging.

[0053] The preset array distribution shape is either honeycomb or rectangular. The honeycomb array is a regular hexagonal array, and the rectangular array is an M×N array. The rectangular and honeycomb array vortex beams differ in their detection and imaging capabilities. The honeycomb array vortex beam can quickly detect large areas, while the rectangular array vortex beam can capture finer details in the scene. The appropriate option can be selected based on different requirements.

[0054] The beam splitter outputs multiple beams as array sub-beams, which are respectively projected onto the spatial light modulator screen at positions corresponding to elements of a preset array. The phase of each sub-beam is modulated by loading a preset phase hologram, resulting in different phases for each sub-beam and thus creating array vortex beams with varying orbital angular momentum distributions. The beam splitter can control the transmission of different incident lasers to different positions on the spatial light modulator screen, and then set different phase holograms at the corresponding positions on the spatial light modulator, thereby obtaining different topological charges at each position. The different topological charges are used to reduce crosstalk between the sub-beams under the influence of complex environments.

[0055] In this embodiment, the representation of the arrayed vortex beam is divided into two types: one is a rectangular arrayed vortex beam, and the other is a honeycomb arrayed vortex beam. First, according to the light field expression of a single Laguerre Gaussian beam:

[0056]

[0057]

[0058] Where l is the topological charge number, p is the radial index representing the number of rings in each vortex beam, w(z) is the beam waist radius, k is the wave number, and r, φ, and z are coordinates in cylindrical coordinates, representing the radius, the included angle, and the distance the beam travels along the propagation direction, respectively.

[0059] To associate Laguerre polynomials, z R This is the Rayleigh distance.

[0060] i is the imaginary unit. 2 =-1.

[0061] When the radial exponent p = 0, the expression becomes:

[0062]

[0063] Expanding the expression based on Euler's formula, we give the light field expressions for two types of arrayed vortex beams with different shapes.

[0064] When the preset array distribution shape is rectangular, the intensity distribution of the array vortex beam is as follows:

[0065]

[0066] In the formula: M and N are the number of sub-beams in each row and column of the rectangular array vortex beam, respectively.

[0067] m and n are the row and column numbers of the rectangular array of vortex beams, respectively.

[0068] dx and dy are the horizontal and vertical spacings of adjacent sub-beams, respectively;

[0069] x and y are coordinates in a rectangular coordinate system.

[0070] When the preset array distribution shape is honeycomb, the light intensity distribution of the array vortex beam is as follows:

[0071]

[0072] The honeycomb-like regular hexagonal structure is obtained by dividing a circle into 6 equal points, where R is the radius of the circle, α0 is the angle between the line connecting two adjacent points and the center of the circle, and the line connecting the center of the circle and the 6 points divides the regular hexagonal structure into six triangles, where h is the triangle number.

[0073] A honeycomb-shaped array vortex beam can be designed by combining regular hexagonal structures and array structures.

[0074] This embodiment uses the two array-shaped beam splitters described above to output multiple beams, which are then projected onto different positions of the spatial light modulator. Each sub-beam at each position is assigned a different phase by loading a preset phase hologram, resulting in phase differences among the sub-beams and consequently, differences in their topological charge numbers. The orthogonality between vortex beams with different topological charge numbers is utilized to reduce crosstalk between sub-beams. Further reduction of crosstalk is achieved by adjusting different arrangements of the array vortex beams and using a phase retrieval algorithm. The phase retrieval algorithm utilizes the GS phase retrieval algorithm, deriving the phase distribution from the distribution of incident and distorted light intensities to obtain the compensated phase. The process of correcting the distorted array vortex beams using the phase retrieval algorithm is as follows:

[0075] Step 1: Select the amplitude spectrum E1(x,y) of an ideal optical field without wavefront distortion as the amplitude of the input optical field, and select the ideal spiral phase. As the initial random phase, the input light field for diffraction calculation is

[0076] Step 2, Adjust the light field Diffraction transmission calculations were performed to obtain its transform domain amplitude spectrum A(k). x ,k y ) and phase spectrum Φ(k x ,k y );

[0077] Step 3: Replace A(k) with the distorted vortex beam amplitude spectrum E2(x,y). x ,k y ), thus obtaining the new complex amplitude of the optical field E2(x,y)exp(iΦ(k x ,k y ));

[0078] Step 4: Apply the light field E2(x,y)exp(iΦ(k) x ,k y Perform inverse diffraction operations to obtain the spatial domain amplitude spectrum a(x,y) and phase spectrum H(x,y);

[0079] Step 5: Replace a(x,y) with the amplitude spectrum E1(x,y) of the initial ideal light field to obtain the initial light field expression E1(x,y)exp(iH(x,y)) for the next iteration. The calculation terminates when the iteration condition is met or the defined number of iterations is reached, and the reconstructed vortex beam distortion phase H(x,y) can be obtained.

[0080] Step 6: Obtain the distortion phase of atmospheric turbulence. The twisted phase is an array-type compensated phase distribution;

[0081] Step 7: Transform the obtained distorted phase and load it onto the compensation phase screen to correct the distorted array vortex beam.

[0082] It is evident that by modifying the distribution of the phase hologram on the spatial light modulator, different array vortex beam arrangements can be obtained. By changing the topological charge at different positions, different orbital angular momentum distributions can be achieved, reducing crosstalk between sub-beams and enhancing the ability to withstand complex environments. Furthermore, a phase retrieval algorithm is used to correct the distorted array vortex beams, further improving resilience.

[0083] Specific Implementation Method Two: Combination Figures 1 to 3 This embodiment describes an array vortex optical quantum control emission system based on orbital angular momentum distribution compensation. This system is used in the method described in Embodiment 1. The emission system includes a laser 1, a multi-optical fiber 2, a polarization controller 3, a first collimator 4, a polarizer 5, a beam splitter 6, a spatial light modulator 7, an atmospheric turbulence phase screen 8, an area array detector 9, a computer 10, a compensation phase screen 11, and a second collimator 12.

[0084] The beam generated by laser 1 is transmitted through different branches of multiple optical fibers 2. The multiple beams are controlled by polarization controller 3, collimator 4 and polarizer 6. After passing through beam splitter 6, the multiple beams are distributed into vortex beams with different spatial positions. They are then hit into the corresponding positions of spatial light modulator 7 in a preset array shape to form an array vortex beam. The phase of any sub-beam in the array vortex beam is modulated by a preset phase hologram. Sub-beams with different topological charges are obtained by adjusting the distribution of the preset phase hologram on the spatial light modulator.

[0085] The array vortex beam is emitted after passing through collimator 12;

[0086] The atmospheric turbulence phase screen 8 is obtained using the power spectrum inversion method. The arrayed vortex beam is then subjected to atmospheric turbulence simulated by the phase screen 8. A planar array detector 9 obtains the distorted arrayed vortex beam after passing through the atmospheric turbulence. A computer 10 then uses a phase retrieval algorithm to obtain the corrected phase, which is then loaded onto the compensation phase screen 11 to correct the arrayed vortex beam. The corrected beam is then directed onto the target module 15. After reflection from the target, the beam is collected by the receiving optical system 13 into the CCD camera 14, and the computer 10 obtains an image of the target.

[0087] Atmospheric turbulence is simulated using an atmospheric turbulence phase screen 8. After the arrayed vortex beam passes through the atmospheric turbulence phase screen 8, the light field will be distorted, and the light field intensity distribution of the distorted beam is obtained. The light intensity of the original arrayed vortex beam and the light intensity of the arrayed vortex beam after distortion are applied to the phase retrieval algorithm. The required phase is obtained through continuous diffraction iteration of the phase retrieval algorithm. This phase is then loaded into the compensation phase screen 11 to correct the beam.

[0088] While the invention has been described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the invention. Therefore, it should be understood that many modifications can be made to the exemplary embodiments, and other arrangements can be designed without departing from the spirit and scope of the invention as defined by the appended claims. It should be understood that different dependent claims and features described herein can be combined in ways different from those described in the original claims. It is also understood that features described in conjunction with individual embodiments can be used in other described embodiments.

Claims

1. A method for controlling the emission of arrayed vortex photons based on orbital angular momentum distribution compensation, characterized in that, The method includes the following steps: S1. The incident laser is transmitted to the spatial light modulator screen according to the preset array distribution shape using a beam splitter, and a preset phase hologram is loaded on the spatial light modulator to obtain an array vortex beam with different orbital angular momentum distributions. The phases of each sub-beam of the array vortex beam are different, and thus the topological charge of each sub-beam is different. S2. The array vortex beam obtained in step S1 is subjected to simulated atmospheric turbulence to obtain a distorted array vortex beam. Based on the light intensity distribution of the original array vortex beam and the light intensity distribution of the distorted array vortex beam, an array-type compensated phase distribution is obtained by using a phase recovery algorithm. S3. The array-type compensated phase distribution obtained in step S2 is loaded into the compensated phase screen to correct the distorted array vortex beam and then emitted to the target for imaging.

2. The array vortex photonic quantum control emission method based on orbital angular momentum distribution compensation according to claim 1, characterized in that, The preset array distribution shape is either honeycomb or rectangular. The honeycomb array is a regular hexagonal array, and the rectangular array is an M×N array.

3. The array vortex photonic quantum control emission method based on orbital angular momentum distribution compensation according to claim 2, characterized in that, The beam splitter outputs multiple beams as array sub-beams, which are respectively projected onto the spatial light modulator screen at positions corresponding to each element of the preset array. The phase of each sub-beam is modulated by loading a preset phase hologram, so that the phases of each sub-beam are different, thereby obtaining array vortex beams with different orbital angular momentum distributions.

4. The array vortex photonic quantum control emission method based on orbital angular momentum distribution compensation according to claim 2, characterized in that, When the preset array distribution shape is rectangular, the intensity distribution of the array vortex beam is as follows: In the formula: M and N are the number of sub-beams in each row and column of the rectangular array vortex beam, respectively. m and n are the row and column numbers of the rectangular array of vortex beams, respectively. dx and dy are the horizontal and vertical spacings of adjacent sub-beams, respectively; x and y are coordinates in a rectangular coordinate system; l is the topological charge number, w(z) is the waist radius, and k is the wave number. To associate the Laguerre polynomials, z is the distance the beam travels along the propagation direction, z R Let be the Rayleigh distance, and i be the imaginary unit.

5. The array vortex photonic quantum control emission method based on orbital angular momentum distribution compensation according to claim 2, characterized in that, When the preset array distribution shape is honeycomb, the light intensity distribution of the array vortex beam is as follows: The honeycomb-like regular hexagonal structure is obtained by dividing a circle into 6 equal points, where R is the radius of the circle, α0 is the angle between the line connecting two adjacent points and the center of the circle, and the line connecting the center of the circle and the 6 points divides the regular hexagonal structure into six triangles, where h is the triangle number. l is the topological charge number, w(z) is the beam waist radius, k is the wavenumber, and z is the distance the beam travels along the propagation direction. R Let i be the Rayleigh distance, and i be the imaginary unit. dx and dy are the horizontal and vertical spacings of adjacent sub-beams, respectively; x and y are coordinates in a rectangular coordinate system.

6. The array vortex photonic quantum control emission method based on orbital angular momentum distribution compensation according to claim 5, characterized in that, The process of correcting the distorted array vortex beam using the phase retrieval algorithm is as follows: Step 1: Select the amplitude spectrum E1(x,y) of an ideal optical field without wavefront distortion as the amplitude of the input optical field, and select the ideal spiral phase. As the initial random phase, the input light field for diffraction calculation is Step 2, Adjust the light field Diffraction transmission calculations were performed to obtain its transform domain amplitude spectrum A(k). x ,k y ) and phase spectrum Φ(k x ,k y ); Step 3: Replace A(k) with the distorted vortex beam amplitude spectrum E2(x,y). x ,k y ), thus obtaining the new complex amplitude of the optical field E2(x,y)exp(iΦ(k x ,k y )); Step 4: Apply the light field E2(x,y)exp(iΦ(k) x ,k y Perform inverse diffraction operations to obtain the spatial domain amplitude spectrum a(x,y) and phase spectrum H(x,y); Step 5: Replace a(x,y) with the amplitude spectrum E1(x,y) of the initial ideal light field to obtain the initial light field expression E1(x,y)exp(iH(x,y)) for the next iteration. The calculation terminates when the iteration condition is met or the defined number of iterations is reached, and the reconstructed vortex beam distortion phase H(x,y) can be obtained. Step 6: Obtain the distortion phase of atmospheric turbulence. The twisted phase is an array-type compensated phase distribution; Step 7: Transform the obtained distorted phase and load it onto the compensation phase screen to correct the distorted array vortex beam.

7. An array vortex optical quantum control emission system based on orbital angular momentum distribution compensation, the system being used to implement the method described in any one of claims 1 to 6, characterized in that, The transmitting system includes a laser (1), multiple optical fibers (2), a polarization controller (3), a collimator (4), a polarizer (5), a beam splitter (6), a spatial light modulator (7), an atmospheric turbulence phase screen (8), an array detector (9), a computer (10), a compensation phase screen (11), and a collimator (12). The beam generated by the laser (1) is transmitted through different branches of multiple optical fibers (2). The multiple beams are controlled by the polarization controller (3), collimator (4) and polarizer (6). After passing through the beam splitter (6), the multiple beams are distributed in different spatial positions and hit the corresponding positions of the spatial light modulator (7) according to the preset array shape to form an array vortex beam. The phase of any sub-beam in the array vortex beam is modulated by the preset phase hologram. Sub-beams with different topological charges are obtained by adjusting the distribution of the preset phase hologram on the spatial light modulator. The array vortex beam is emitted after passing through collimator number 2 (12); The atmospheric turbulence phase screen (8) is obtained by power spectrum inversion. The atmospheric turbulence of the array vortex beam is simulated by the atmospheric turbulence phase screen (8). The distorted array vortex beam after passing through the atmospheric turbulence is obtained by the area array detector (9). Then, the phase correction is obtained by the computer (10) through the phase recovery algorithm and loaded onto the compensation phase screen (11) to correct the array vortex beam. The corrected beam is then hit onto the target module (15).

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