Adjusting device and adjusting method for measuring laser wavelength through biprism interference

Abstract

The invention belongs to the technical field of laser wavelength measurement, and discloses an adjusting device for measuring laser wavelength through biprism interference and an adjusting method thereof.The adjusting device comprises a light source assembly, a biprism and an interference fringe receiver are sequentially arranged in the emitting direction of the light source assembly, and an adjustable optical fiber receiving assembly is arranged between the biprism and the light source assembly; the optical fiber receiving assembly comprises an adjusting base, the adjusting base is in transmission connection with a vertically arranged vertical support, the vertical support is in transmission connection with a horizontally arranged transverse support, and the transverse support is provided with two symmetrically arranged optical fiber receiving heads; an adjusting disc is arranged on the transverse support and corresponds to the center of the biprism, and the two optical fiber receiving heads are connected to the adjusting disc in a transmission mode. The whole adjusting device is simple, convenient to adjust quickly and low in cost, high-quality interference fringes can be obtained, and the measurement precision of the laser wavelength is greatly improved.

Description

Technical Field

[0001] The invention belongs to the technical field of laser wavelength measurement, and in particular relates to a double prism interference laser wavelength adjustment device and an adjustment method thereof. Background Art

[0002] Laser wavelength is one of the most basic parameters of a laser. The wavelength of a laser ranges from far-infrared lasers of the order of 1000 microns to vacuum ultraviolet lasers of 50 microns, and even X-ray lasers of a few tenths of an inch. The application of lasers depends on precise laser wavelengths, and some applications even have very precise requirements for laser wavelengths. Therefore, it is crucial to find a simple, fast and accurate method to measure the laser wavelength.

[0003] Double prism interferometry is a typical device for measuring laser wavelength. During measurement, the laser line light source is incident on the two prism surfaces of the double prism to refract the light beams respectively. The reverse extension lines of the refracted light beams form two virtual light sources respectively. The refracted light beams of the two prism surfaces produce interference fringes in the overlapping area. The quality of the interference fringes depends on the light splitting of the line light source by the two prism surfaces. If the light splitting is not good, the interference fringes will be affected, resulting in a decrease in measurement accuracy. However, since the angle between the two prism surfaces is close to 180°, the laser line light source and the edges of the double prism have an angle or are parallel but offset laterally, resulting in a decrease in the quality of the interference fringes or even no interference fringes, which is not conducive to the measurement of laser wavelength, and is inconvenient to adjust, reducing the efficiency of laser wavelength measurement.

[0004] Therefore, the present application designs a dual-prism interference laser wavelength adjustment device and an adjustment method thereof to solve the above-mentioned technical problems. Summary of the invention

[0005] In order to solve the above technical problems, the present invention proposes a double prism interference laser wavelength adjustment device and an adjustment method thereof, providing a convenient and fast adjustment device, a low-cost device that is easy to improve the quality of interference fringes, and better meet the increasingly high parameter accuracy requirements for laser applications in various fields.

[0006] To achieve the above-mentioned object, the present invention provides a device for adjusting the wavelength of laser light by using double prism interference, comprising a light source assembly, wherein a double prism and an interference fringe receiver are sequentially arranged in the emission direction of the light source assembly, and an adjustable optical fiber receiving assembly is arranged between the double prism and the light source assembly;

[0007] The optical fiber receiving assembly comprises an adjusting base, on which a vertical bracket arranged longitudinally is drivingly connected, on which a horizontal bracket arranged horizontally is drivingly connected, and on which two symmetrically arranged optical fiber receiving heads are arranged;

[0008] The transverse support is provided with an adjustment disk, the adjustment disk is arranged corresponding to the center of the double prism, and the two optical fiber receiving heads are transmission-connected to the adjustment disk.

[0009] Preferably, the adjustment disk includes an adjustment shaft rotatably connected to the transverse bracket, an adjustment gear is provided on the adjustment shaft, adjustment racks are respectively meshed and driven on both sides of the adjustment gear, and the two optical fiber receiving heads are respectively transmission-connected to the two adjustment racks.

[0010] Preferably, two parallel limit guide rails are provided on the transverse bracket, and the two adjustment racks slide in a limit manner with the two limit guide rails respectively.

[0011] Preferably, an indicator line for indicating the position is arranged at the center position of the adjustment shaft, the indicator line is aligned with the center position of the double prism, and the two optical fiber receiving heads are symmetrically arranged on both sides of the indicator line.

[0012] Preferably, the light source assembly includes a light source for emitting laser light, a shading plate is provided between the light source and the double prism, a light-transmitting slit for transmitting laser light is provided on the shading plate, and the light-transmitting slit is provided corresponding to the midline position of the double prism.

[0013] Preferably, the optical fiber receiving assembly further comprises a processing module, and the optical fiber receiving head is connected to the processing module via an optical fiber.

[0014] Preferably, the optical fiber receiving head comprises an unconventional lens rod, and one end of the unconventional lens rod away from the light is connected to the optical fiber through an optical fiber sleeve.

[0015] A method for adjusting the wavelength of laser light by using double prism interference measurement, comprising the following steps:

[0016] Assemble the double prism interferometer laser wavelength adjustment device and make preparations;

[0017] Check the center position of the dual prism and align it with the light source assembly to complete the initial alignment;

[0018] Adjust the lateral position of the optical fiber receiving assembly so that the symmetry axes of the two optical fiber receiving heads are aligned with the center of the light source assembly and the double prism respectively;

[0019] Adjust the longitudinal position of the optical fiber receiving assembly so that it is aligned with the top or bottom end of the dual prism;

[0020] Detect the correspondence between the two optical fiber receiving heads and the double prism of the optical fiber receiving assembly to ensure accuracy;

[0021] After the detection of the optical fiber receiving component is completed, the wavelength of the laser emitted by the light source component begins to be measured.

[0022] Preferably, in the step of detecting the optical fiber receiving assembly, the double prism is longitudinally divided into several equal parts, and then the longitudinal positions of the two optical fiber receiving heads are adjusted in sequence, and then the reflected light intensity received by the optical fiber receiving heads at each equal position is recorded and compared.

[0023] Preferably, in the step of detecting the optical fiber receiving assembly, after completing one longitudinal detection of the positions of the two optical fiber receiving heads, the distance between the two optical fiber receiving heads is enlarged by adjusting the disk, and the longitudinal position detection is repeated again.

[0024] Compared with the prior art, the present invention has the following advantages and technical effects: the present invention discloses a double prism interference laser wavelength adjustment device and an adjustment method thereof, wherein a light source assembly provides a laser light source and irradiates the laser light source toward a double prism, and an interference fringe receiver is used to receive interference fringes formed after the laser light is refracted by the double prism, thereby measuring the wavelength of the laser light; the arrangement of an adjustment base, a vertical bracket and a horizontal bracket of the optical fiber receiving assembly enables two optical fiber receiving heads to move freely in a three-dimensional space between the light source assembly and the double prism; the adjustment disk can adjust the spacing between the two optical fiber receiving heads, and the two optical fiber receiving heads respectively receive the two prism surfaces of the double prism through the two optical fiber receiving heads The intensity of the light reflected at different positions in the height direction can be used to quickly determine whether the line light source is in a vertical state, whether the edge of the double prism is adjusted to a vertical position and perpendicular to the optical axis. The two fiber optic receiving heads are designed on the horizontal bracket, which are symmetrically distributed relative to the optical axis of the entire optical path system, and can simultaneously approach or move away from the optical axis direction of the measuring device to ensure that the two fiber optic receiving heads are always symmetrically distributed; the horizontal bracket can move up and down with the vertical bracket to monitor the reflected light intensity of the two prism surfaces of the double prism at different positions in the height direction, and whether the double prism is adjusted well can be judged by whether the received light intensity is consistent, which is simple and convenient.

[0025] The entire adjustment device of the present invention is simple, convenient for rapid adjustment, and low in cost. At the same time, high-quality interference fringes can be obtained, thereby greatly improving the measurement accuracy of the laser wavelength. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0027] Figure 1 It is a top view schematic diagram of the device for adjusting the wavelength of laser light by using double prism interference measurement according to the present invention;

[0028] Figure 2 It is a schematic side view of the double prism of the present invention;

[0029] Figure 3 It is a schematic diagram of the alignment state of the light source and the double prism of the present invention;

[0030] Figure 4 This is a schematic diagram of the misalignment state of the light source and the double prism of the present invention;

[0031] Figure 5 This is a schematic diagram of the transverse support structure of the present invention;

[0032] Figure 6 This is a schematic diagram of an optical fiber receiving head of the present invention;

[0033] In the figure: 1. light source; 2. sunshade; 3. light-transmitting slit; 4. double prism; 5. fringe receiver; 6. adjustment base; 7. vertical bracket; 8. horizontal bracket; 9. optical fiber receiving head; 10. adjustment disk; 11. adjustment shaft; 12. adjustment gear; 13. adjustment rack; 14. limit guide rail; 15. indicator line; 16. processing module; 17. optical fiber; 18. unconventional lens rod; 19. optical fiber sleeve; 20. connecting rod; 21. linear light source. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] Reference Figure 1-Figure 6 As shown, this embodiment provides a device for adjusting the wavelength of laser light by using a double prism interference measurement, comprising a light source assembly, wherein a double prism 4 and an interference fringe receiver 5 are sequentially arranged in the emission direction of the light source assembly, and an adjustable optical fiber receiving assembly is arranged between the double prism 4 and the light source assembly;

[0037] The optical fiber receiving assembly includes an adjusting base 6, on which a vertical bracket 7 arranged longitudinally is drivingly connected, and on which a horizontal bracket 8 arranged horizontally is drivingly connected, and on which two symmetrically arranged optical fiber receiving heads 9 are arranged;

[0038] An adjusting disk 10 is arranged on the transverse bracket 8 . The adjusting disk 10 is arranged corresponding to the center of the double prism 4 . The two optical fiber receiving heads 9 are drivingly connected to the adjusting disk 10 .

[0039] The present invention discloses a device and method for adjusting the wavelength of laser light by using double prism interference. A light source assembly provides a laser light source and irradiates the laser light to a double prism 4. An interference fringe receiver 5 is used to receive interference fringes formed after the laser light is refracted by the double prism 4, and then measure the wavelength of the laser light. The arrangement of an adjustment base 6, a vertical bracket 7 and a horizontal bracket 8 of the optical fiber receiving assembly enables two optical fiber receiving heads 9 to move freely in a three-dimensional space between the light source assembly and the double prism 4, and can be adjusted conveniently and flexibly. An adjustment disk 10 can adjust the spacing between the two optical fiber receiving heads 9, and the two optical fiber receiving heads 9 can respectively receive the two prism surfaces of the double prism 4 in height. The intensity of the light reflected at different positions can be used to quickly determine whether the line light source is in a vertical state, whether the edge of the double prism 4 is adjusted to a vertical position and perpendicular to the optical axis, and the two optical fiber receiving heads 9 are designed on the horizontal bracket 8, which are symmetrically distributed relative to the optical axis of the entire optical path system, and can simultaneously approach or move away from the optical axis direction of the measuring device to ensure that the two optical fiber receiving heads 9 are always symmetrically distributed; the horizontal bracket 8 can move up and down with the vertical bracket 7, so as to monitor the reflected light intensity of the two prism surfaces of the double prism 4 at different positions in the height direction, and judge whether the double prism 4 is adjusted by whether the received light intensity is consistent, which is simple and convenient. The entire adjustment device of the present invention is simple, easy to adjust quickly, low in cost, and can obtain high-quality interference fringes, greatly improving the measurement accuracy of the laser wavelength.

[0040] Furthermore, the optical axis mentioned in this embodiment refers to a mounting axis for mounting the light source assembly and the dual prism 4, and the positions of the two can be adjusted.

[0041] Further optimization scheme, the adjustment disk 10 includes an adjustment shaft 11 rotatably connected to the transverse bracket 8, an adjustment gear 12 is arranged on the adjustment shaft 11, and the two sides of the adjustment gear 12 are respectively meshed and driven with adjustment racks 13, and the two optical fiber receiving heads 9 are respectively connected to the two adjustment racks 13; the transverse bracket 8 is provided with two parallel limit guide rails 14, and the two adjustment racks 13 are respectively limited and slid with the two limit guide rails 14. The adjustment gear 12 is rotatably connected to the transverse bracket 8 through the adjustment shaft 11, and the two optical fiber receiving heads 9 are respectively connected to the two adjustment racks 13 through the connecting rod 20, so that the two optical fiber 17 adjustment heads are at the same level in the longitudinal direction, and the two optical fiber receiving heads 9 are symmetrical about the midline of the adjustment shaft 11; when in use, the adjustment gear 12 is rotated to make the two adjustment racks 13 move relative to or towards each other, thereby adjusting the spacing between the two optical fiber receiving heads 9, so that the two optical fiber receiving heads 9 are always symmetrically distributed relative to the optical axis, and the transverse bracket 8 remains horizontal; the setting of the limit guide rail 14 ensures the stability of the adjustment rack 13.

[0042] Furthermore, the adjusting gear 12 of this embodiment is meshed with a driving gear (not shown) for driving it to rotate. The number of teeth of the driving gear is smaller than that of the adjusting gear 12, so that the driving gear can adjust a certain distance only after rotating several circles, thereby ensuring the accuracy of the adjustment.

[0043] Furthermore, the end faces of the optical fiber receiving heads 9 are respectively aligned with one prism surface of the double prism 4 and are parallel to the corresponding prism surface. The two optical fiber receiving heads 9 are symmetrically distributed on both sides of the optical axis, and the adjustable range of their spacing is 2-10 mm.

[0044] Further optimization scheme, an indicator line 15 for indicating the position is set at the center position of the adjustment shaft 11, the indicator line 15 is aligned with the center position of the double prism 4, and the two optical fiber receiving heads 9 are symmetrically arranged on both sides of the indicator line 15. The indicator line 15 is set at the center position of the adjustment shaft 11, and the indicator line 15 is extended to the horizontal bracket 8 and aligned with the optical axis in the middle of the double prism 4. When adjusting the optical path, check whether the laser beam is irradiated at the position of the indicator line 15 on the optical axis. If the laser on the optical axis can be aligned with the indicator line 15, it means that the symmetry axis of the two optical fiber receiving heads 9 coincides with the optical axis. If the laser on the optical axis is not aligned with the indicator line 15, adjust the horizontal bracket 8 of the receiving head in the left and right directions until the laser beam is irradiated at the position of the indicator line 15. At this time, the two optical fiber receiving heads 9 are symmetrical about the optical axis.

[0045] In a further optimized solution, the light source assembly includes a light source 1 for emitting laser light, a shading plate 2 is arranged between the light source 1 and the double prism 4, and a light-transmitting slit 3 for transmitting laser light is arranged on the shading plate 2, and the light-transmitting slit 3 is arranged corresponding to the midline position of the double prism 4. The light source 1 provides the laser to be measured, the shading plate 2 is made of an opaque material, and the laser light passes through the light-transmitting slit 3 on the shading plate 2, so that the processed laser light forms a longitudinally arranged line light source 21, which is then irradiated onto the double prism 4 and aligned with the optical axis of the double prism 4.

[0046] Furthermore, the position of the light-transmitting slit 3 in this embodiment is adjustable to achieve the adjustment of the direction of the laser.

[0047] Further, referring to the design of this embodiment Figure 3 and Figure 4 As shown, Figure 3 The line light source 21 is aligned with the center of the biprism 4, and Figure 4 The linear light source 21 is not aligned with the center of the biprism 4. The position relationship is adjusted according to the observation result to achieve Figure 3 The indicated status.

[0048] Furthermore, the transverse bracket 8 remains in a horizontal state and the indicator line 15 remains in a vertical state. If the line light source 21 is not aligned with the indicator line 15, the line light source 21 is rotated or the base of the line light source 21 is moved transversely, so that the line light source 21 and the indicator line 15 finally overlap. The overlap indicates that the line light source 21 is also in a vertical position.

[0049] In a further optimized solution, the optical fiber receiving assembly further includes a processing module 16, and the optical fiber receiving head 9 is connected to the processing module 16 via an optical fiber 17. The processing module 16 is used to measure the light intensity received by the optical fiber receiving head 9, and then automatically compare the light intensity of the two to avoid errors caused by manual comparison.

[0050] Further optimization scheme, the fiber receiving head 9 includes an unconventional lens rod 18, and the end of the unconventional lens rod 18 away from the light is connected to the optical fiber 17 through the optical fiber sleeve 19. The prism of the double prism 4 is slightly divergent after reflecting the incident laser beam, so the fiber receiving head 9 uses an unconventional lens rod 18 with a pitch of 0.28-0.32, and then connects to the optical fiber 17 through the optical fiber sleeve 19. The unconventional lens rod 18 with this pitch allows the slightly divergent light beam and the light with a larger spot size to be better converged to the optical fiber 17, so as to achieve a better reception effect on the light beam reflected by the prism surface of the double prism 4.

[0051] Furthermore, the diameter of the optical fiber receiving head 9 of this embodiment is 1.8-2.5 mm.

[0052] A method for adjusting the wavelength of laser light by using double prism interference measurement, comprising the following steps:

[0053] Assemble the double prism interferometer laser wavelength adjustment device and make preparations;

[0054] Check the center position of the dual prism 4 and align it with the light source assembly to complete the preliminary alignment;

[0055] Adjust the lateral position of the optical fiber receiving assembly so that the symmetry axes of the two optical fiber receiving heads 9 are aligned with the center of the light source assembly and the double prism 4 respectively;

[0056] Adjust the longitudinal position of the optical fiber receiving assembly so that it is aligned with the top or bottom end of the dual prism 4;

[0057] Detect the correspondence between the two optical fiber receiving heads 9 of the optical fiber receiving assembly and the double prism 4 to ensure accuracy;

[0058] After the detection of the optical fiber receiving component is completed, the wavelength of the laser emitted by the light source component begins to be measured.

[0059] After the equipment is assembled, first adjust the line light source 21 to align with the center of the double prism 4, and then adjust the distance between the two fiber optic receiving heads 9 according to the width of the line light source 21 and the distance from the line light source 21 to the double prism 4. The size of the distance is equal to the width of the line light source 21 in the double prism 4, and align the laser beam of the line light source 21 with the indicator line 15, and then adjust the vertical bracket 7 until the position of the fiber optic receiving head 9 is at the same height as the bottom or top of the edge of the double prism 4. At the same time, divide the height of the edge of the double prism 4 into five or seven equal parts, and adjust the vertical bracket 7 to move the fiber optic receiving head 9 to the height of the equally divided position, and then record and compare whether the reflected light intensity received by the fiber optic receiving head 9 at each equally divided position is basically consistent. If it is basically consistent, it means that the line light source 21 is parallel to the edge of the double prism 4, and the distance of the fiber optic receiving head 9 is increased by 1 mm at a time, and then the above detection process is repeated after each increase in the spacing to ensure that the light intensity received by the two fiber optic receiving heads 9 is basically consistent, and the interference fringe test step of laser wavelength measurement can be carried out.

[0060] If the light intensity received by the optical fiber receiving head 9 is greater on the left side than on the right side when the optical fiber receiving head 9 is in the lower half of the four edges of the double prism, and is greater on the right side than on the left side when the optical fiber receiving head 9 is in the upper half of the four edges of the double prism, then fine-tune the double prism 4 clockwise until the light intensities received by the two optical fiber receiving heads 9 are substantially the same when the optical fiber receiving heads 9 move up and down; if the light intensity received by the optical fiber receiving head 9 is greater on the right side than on the left side when the optical fiber receiving head 9 is in the lower half of the four edges of the double prism, and is greater on the left side than on the right side when the optical fiber receiving head 9 is in the upper half, then fine-tune the double prism 4 counterclockwise until the light intensities received by the two optical fiber receiving heads 9 are substantially the same when the optical fiber receiving heads 9 move up and down; if during the up and down movement of the optical fiber receiving head 9, the light intensity received by the optical fiber receiving head 9 on the right side when viewed along the laser transmission direction is If the light intensity on the left side is always greater than that on the right side and the difference in light intensity remains basically unchanged, then the biprism 4 is moved laterally to the left side through the lateral adjustment device of the base of the biprism 4 until the light intensities received by the two fiber optic receiving heads 9 are basically the same when the fiber optic receiving heads 9 move up and down; if the light intensity received by the fiber optic receiving heads 9 on the left side is always greater than that on the right side when viewed along the laser transmission direction during the up and down movement of the fiber optic receiving heads 9, and the difference in light intensity remains basically unchanged, then the biprism 4 is moved laterally slightly to the right side through the lateral adjustment device of the base of the biprism 4 until the light intensities received by the two fiber optic receiving heads 9 are basically the same when the fiber optic receiving heads 9 move up and down; in either case, the interference fringe test step of laser wavelength measurement can be performed when the reflected light intensities received by the fiber optic receiving heads 9 during the upstream and downstream movement are basically the same.

[0061] Furthermore, the above terms "left", "right", "clockwise" and "counterclockwise" are all judged based on the direction of laser transmission.

[0062] Furthermore, along the transmission direction of the optical path, all components are placed on the guide rail, and the optical axis is indicated by the guide rail. The laser emitted by the light source 1 passes through the light-transmitting slit 3 to form a line light source 21 (see Appendix Figure 1 The light beams of the line light source 21 are refracted by the two prism surfaces of the double prism 4 and meet in the interference fringe receiver 5 area to form interference fringes parallel to the slit, and form two virtual images S1 and S2 of S by the two prism surfaces of the double prism 4 respectively.

[0063] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0064] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A device for adjusting the wavelength of laser light by using double prism interference, characterized in that: It comprises a light source assembly, wherein a double prism (4) and an interference fringe receiver (5) are sequentially arranged in the emission direction of the light source assembly, and an adjustable optical fiber receiving assembly is arranged between the double prism (4) and the light source assembly; The optical fiber receiving assembly comprises an adjusting base (6), a vertical bracket (7) arranged longitudinally is drivingly connected to the adjusting base (6), a horizontal bracket (8) is drivingly connected to the vertical bracket (7), and two symmetrically arranged optical fiber receiving heads (9) are arranged on the horizontal bracket (8); An adjustment disk (10) is provided on the transverse support (8), the adjustment disk (10) is arranged corresponding to the center of the double prism (4), and the two optical fiber receiving heads (9) are transmission-connected to the adjustment disk (10).

2. The device for adjusting laser wavelength by using double prism interference measurement according to claim 1, characterized in that: The adjusting disk (10) comprises an adjusting shaft (11) rotatably connected to the transverse bracket (8), an adjusting gear (12) being arranged on the adjusting shaft (11), adjusting racks (13) being meshed and driven on both sides of the adjusting gear (12), and the two optical fiber receiving heads (9) are respectively connected to the two adjusting racks (13) in a driving manner.

3. The device for adjusting laser wavelength by using double prism interference measurement according to claim 2, characterized in that: The transverse bracket (8) is provided with two parallel position limiting guide rails (14), and the two adjusting racks (13) are respectively limitedly slidable with the two position limiting guide rails (14).

4. The device for adjusting laser wavelength by using double prism interference measurement according to claim 2, characterized in that: An indication line (15) for indicating a position is arranged at the center of the adjustment shaft (11), the indication line (15) is aligned with the center of the double prism (4), and the two optical fiber receiving heads (9) are symmetrically arranged on both sides of the indication line (15).

5. The device for adjusting laser wavelength by using double prism interference measurement according to claim 1, characterized in that: The light source assembly comprises a light source (1) for emitting laser light, a light shielding plate (2) being arranged between the light source (1) and the double prism (4), a light-transmitting slit (3) for transmitting laser light being arranged on the light shielding plate (2), and the light-transmitting slit (3) being arranged corresponding to the midline position of the double prism (4).

6. The device for adjusting laser wavelength by using double prism interference measurement according to claim 1, characterized in that: The optical fiber receiving assembly further comprises a processing module (16), and the optical fiber receiving head (9) is connected to the processing module (16) via an optical fiber (17).

7. The device for adjusting laser wavelength by using double prism interference measurement according to claim 6, characterized in that: The optical fiber receiving head (9) comprises an unconventional lens rod (18), and an end of the unconventional lens rod (18) away from the light is connected to the optical fiber (17) through an optical fiber sleeve (19).

8. A method for adjusting the wavelength of laser light by using double prism interferometry, characterized in that The following steps are involved: Assemble the double prism interferometer laser wavelength adjustment device as described in any one of claims 1 to 7 and make preparations; Check the center position of the dual prism (4) to align it with the light source assembly to complete the initial alignment; Adjusting the lateral position of the optical fiber receiving assembly so that the symmetry axes of the two optical fiber receiving heads (9) are aligned with the center of the light source assembly and the double prism (4) respectively; Adjusting the longitudinal position of the optical fiber receiving assembly so that it is aligned with the top or bottom end of the double prism (4); Detecting the correspondence between two optical fiber receiving heads (9) of the optical fiber receiving assembly and the double prism (4) to ensure accuracy; After the detection of the optical fiber receiving component is completed, the wavelength of the laser emitted by the light source component begins to be measured.

9. The method for adjusting the laser wavelength by double prism interferometry according to claim 8, characterized in that: In the step of detecting the optical fiber receiving assembly, the double prism (4) is longitudinally divided into several equal parts, and then the longitudinal positions of the two optical fiber receiving heads (9) are adjusted in sequence, and then the reflected light intensity received by the optical fiber receiving heads (9) at each equal division position is recorded and compared.

10. The method for adjusting the laser wavelength by double prism interferometry according to claim 9, characterized in that: In the step of detecting the optical fiber receiving assembly, after completing a longitudinal detection of the positions of the two optical fiber receiving heads (9), the distance between the two optical fiber receiving heads (9) is enlarged by adjusting the disk (10), and the longitudinal position detection is repeated again.

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