Optical fiber coupling type acousto-optic device

Abstract

The utility model discloses an optical fiber coupling type acousto-optic device, which comprises a shell, two collimators and a radiation assembly, and is characterized in that the shell is provided with an accommodating cavity; the two collimators are arranged on the shell relative to the accommodating cavity; the radiation assembly comprises a mounting seat and a radiation part, the mounting seat is arranged in the accommodating cavity, the radiation part is detachably arranged on the mounting seat, the radiation part is provided with a radiation surface, and the radiation surface is suitable for refracting the diffracted light so as to enlarge the range of receiving the diffracted light by the collimator. According to the optical fiber coupling type acousto-optic device with the structure, the diffraction light receiving range of the collimator can be increased, so that the receiving wide angle of the collimator is enlarged in a disguised manner, the collimator can receive a signal with a larger bandwidth range, and the practicability of the acousto-optic device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to acoustooptic device technical field, concretely relates to a kind of optical fiber coupling type acoustooptic devices. BACKGROUND

[0002] The phenomenon that ultrasonic wave propagates in crystal and makes the refractive index of crystal periodically change, thereby making incident light diffract, is called acoustooptic effect. Acoustooptic device is a functional device designed by using acoustooptic effect. It is mainly used for controlling laser beam and can modulate the frequency, amplitude and phase of laser beam and other beam characteristics. With the development of optoelectronic technology, acoustooptic device has been widely used in beam control, optical signal processing, optical computing and optical communication.

[0003] In the prior art, optical fiber coupling type acoustooptic device is optical coupling by using optical fiber collimator on both sides of free-space acoustooptic device to make it convenient to use in optical fiber system. It mainly uses the basic principle of acoustooptic interaction. The radio frequency electric signal output by driving power is applied to piezoelectric transducer through impedance matching circuit. The piezoelectric transducer converts the signal into ultrasonic wave propagating in acoustooptic medium, forming an equivalent phase grating. When the input laser beam is incident into the acoustooptic medium at a certain angle through the input collimator, the laser beam will diffract. The first-order diffracted light after diffraction is coupled out through the output collimator and optical fiber. However, since the output collimator has a certain receiving wide angle, the output collimator can only accept signals within a certain range of bandwidth, resulting in low practicality. SUMMARY

[0004] Therefore, the technical problem to be solved by the utility model is to overcome the defect that the output collimator in the existing acoustooptic device can only accept signals within a certain range of bandwidth, resulting in low practicality.

[0005] To this end, the utility model provides an optical fiber coupling type acoustooptic device, which comprises:

[0006] A housing having a receiving cavity;

[0007] At least two collimators, two collimators are arranged on the housing opposite to the receiving cavity;

[0008] A radiation assembly comprising a mounting seat and a radiation component, the mounting seat is arranged in the receiving cavity, and the radiation component is detachably arranged on the mounting seat, the radiation component has a radiation surface, and the radiation surface is adapted to refract and diffract light to increase the range of diffracted light received by the collimator.

[0009] Optionally, the optical fiber coupling type acoustooptic device described above further comprises an acoustooptic crystal, which is arranged in the receiving cavity and between the two collimators, and the acoustooptic crystal is adapted to diffract laser beam into diffracted light.

[0010] Optionally, the above-mentioned fiber-coupled acousto-optic device, in the two collimators, one of the collimators is an input collimator, and the other of the collimators is an output collimator, the input collimator is adapted to emit a laser beam into the accommodating cavity, and the output collimator is adapted to receive diffracted light in the accommodating cavity.

[0011] Optionally, the above-mentioned fiber-coupled acousto-optic device, a receiving end of the output collimator corresponds to a refractive focal point of the radiation surface.

[0012] Optionally, the above-mentioned fiber-coupled acousto-optic device further comprises at least two adjusting assemblies, the two adjusting assemblies are rotationally arranged on the shell relative to the accommodating cavity, and the two collimators are arranged on the adjusting assemblies, respectively.

[0013] Optionally, the above-mentioned fiber-coupled acousto-optic device, the adjusting assembly comprises an adjusting member and a mounting member, the adjusting member is rotationally arranged on the shell, the mounting member is arranged on the adjusting member, and the collimator is arranged on the mounting member.

[0014] Optionally, the above-mentioned fiber-coupled acousto-optic device, at least two rotating portions are formed in the shell, the two rotating portions are arranged relative to the accommodating cavity, and the two adjusting members are rotationally arranged in the rotating portions, respectively.

[0015] Optionally, the above-mentioned fiber-coupled acousto-optic device, the mounting member has a mounting cavity in communication with the accommodating cavity, the collimator is arranged in the mounting cavity, and an end portion of the collimator is arranged in the accommodating cavity.

[0016] Optionally, the above-mentioned fiber-coupled acousto-optic device, a locking portion is formed in the shell and arranged in communication with the rotating portion; and a fastener is further arranged, the fastener is adapted to abut against the adjusting member through the locking portion under the action of an external force, so as to fix the adjusting member.

[0017] Optionally, the above-mentioned fiber-coupled acousto-optic device further comprises a radio frequency interface, the radio frequency interface is arranged on the shell, and part of the radio frequency interface is arranged in the accommodating cavity, and the other part of the radio frequency interface is arranged outside the accommodating cavity.

[0018] The technical scheme provided by the utility model has the following advantages:

[0019] 1. The optical fiber coupling type acousto-optic device provided by the utility model, including casing, two collimators and radiation assembly, the casing has accommodating cavity, two collimators are set on the casing opposite the accommodating cavity, the radiation assembly includes mounting seat and radiation component, the mounting seat is set in the accommodating cavity, the radiation component is detachably set on the mounting seat, the radiation component has radiation surface, the radiation surface is suitable for refracting and diffracting light to increase the range of collimator receiving diffracted light.

[0020] The optical fiber coupling type acousto-optic device of this structure, through the two collimators and radiation assembly set on the casing, wherein the casing has accommodating cavity, two collimators are set on the casing opposite the accommodating cavity, the radiation assembly includes mounting seat and radiation component, the radiation component is a lens in this embodiment, wherein the mounting seat is set in the accommodating cavity, the radiation component is detachably set on the mounting seat, and the radiation component also has radiation surface, the radiation surface is a curved surface on the lens in this embodiment, the radiation surface can refract diffracted light, so that when the external laser beam enters the accommodating cavity through a collimator and is diffracted into diffracted light in the accommodating cavity, the radiation surface of the radiation component can refract the diffracted light, and the diffracted light passing through the radiation surface of the radiation component can be focused on a point, so that the range of the other collimator receiving diffracted light can be increased, thereby increasing the acceptance angle of the collimator, and the collimator can receive a larger range of bandwidth signals, thereby improving the practicability of the acousto-optic device; in addition, since the position of the mounting seat in the accommodating cavity is fixed, the distance between the radiation component and the collimator is fixed, so that different models of radiation components can be installed on the mounting seat to change the focal point of the diffracted light passing through the radiation surface, thereby enabling the receiving end of the collimator to be located near the focal point of the radiation surface and receiving the diffracted light refracted by the radiation surface, so that the collimator can receive a larger range of diffracted light by replacing the radiation component.

[0021] 2. The optical fiber coupling type acousto-optic device provided by the utility model also includes an acousto-optic crystal, which is set in the accommodating cavity and between the two collimators, and is suitable for diffracting a laser beam into diffracted light. Among the two collimators, one collimator serves as an input collimator, and the other collimator serves as an output collimator. The input collimator is suitable for emitting a laser beam into the accommodating cavity, and the output collimator is suitable for receiving diffracted light in the accommodating cavity. The receiving end of the output collimator corresponds to the refractive focal point of the radiation surface.

[0022] The optical fiber coupling type acousto-optic device has the advantages that the acousto-optic crystal is arranged in the accommodating cavity, the acousto-optic crystal is arranged between the two collimators, the acousto-optic crystal can diffract the laser beam into diffracted light, when the laser beam is shot into the accommodating cavity by one of the collimators, the acousto-optic crystal can diffract the laser beam into diffracted light, and the diffracted light is shot to the other collimator, so that the other collimator can receive the diffracted light, the two collimators are arranged as an input collimator and an output collimator, the functions of the two collimators are distinguished, the input collimator can shoot the laser beam to the accommodating cavity, and the output collimator can receive the diffracted light in the accommodating cavity, the receiving end of the collimator is the receiving end of the output collimator, the receiving end of the output collimator corresponds to the refractive focal point of the radiation surface, the receiving end of the output collimator is located at the same point as the refractive focal point of the radiation surface, or the receiving end of the output collimator is located at a position near the refractive focal point of the radiation surface, the position is a position at which the receiving end of the output collimator can completely receive the refracted diffracted light, the output collimator can diffract light in a larger range, and the practicability of the acousto-optic device is further improved.

[0023] 3. The optical fiber coupling type acousto-optic device also comprises at least two adjusting assemblies, the two adjusting assemblies are arranged on the shell in a rotating manner relative to the accommodating cavity, and the two collimators are arranged on one adjusting assembly.

[0024] The optical fiber coupling type acousto-optic device has the advantages that the two adjusting assemblies are arranged on the shell in a rotating manner relative to the accommodating cavity, the two collimators are arranged on one adjusting assembly, the two collimators can rotate relative to the shell through the adjusting assemblies, the position of the receiving end of the output collimator can be adjusted, and the position of the receiving end of the output collimator can be corresponded to the refractive focal point of the radiation surface.

[0025] 4. The optical fiber coupled acousto-optic device, the mounting member has a mounting cavity in communication with the accommodating cavity, the collimator is arranged in the mounting cavity, and the end of the collimator is arranged in the accommodating cavity. A locking portion is provided on the shell and is in communication with the rotating portion; further comprising a fastener, the fastener is suitable for passing through the locking portion and abutting against the adjusting member under the action of external force, so as to fix the adjusting member. Further comprising a radio frequency interface, the radio frequency interface is arranged on the shell, and part of the radio frequency interface is arranged in the accommodating cavity, and the other part of the radio frequency interface is arranged outside the accommodating cavity.

[0026] The optical fiber coupled acousto-optic device has the mounting cavity in communication with the accommodating cavity, so that the collimator can be installed in the mounting cavity, and then the collimator can be installed on the adjusting member and rotate with the rotating of the adjusting member. Since the mounting cavity and the accommodating cavity are in communication, the end of the collimator can be in the accommodating cavity, so that the input end of the input collimator can shoot the laser beam into the accommodating cavity, and the receiving end of the output collimator can receive the diffracted light. The locking portion on the shell and the fastener arranged in the locking portion are used, the locking portion is a locking hole in this embodiment, and the fastener is a fastening screw in this embodiment. The locking portion and the rotating portion are in communication, so that when the fastener passes through the locking portion under the action of external force, the fastener can extend into the rotating portion, and then the fastener can abut against the adjusting member in the rotating portion, so that after the adjusting member stops rotating, the fastener can fix the adjusting member to avoid the adjusting member continuing to rotate. The radio frequency interface arranged on the shell is used, and the radio frequency interface is arranged in part in the accommodating cavity and in part outside the accommodating cavity, so that the part outside the accommodating cavity can be electrically connected to the power supply outside, and the electrical signal can be provided to the accommodating cavity through the impedance matching circuit electrically connected to the part in the accommodating cavity. The carrier signal can pass through the piezoelectric transducer on the acousto-optic device electrically connected to the impedance matching circuit, and then the electrical signal is converted into an acoustic signal. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or prior art description. Obviously, the drawings described below are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.

[0028] Figure 1 The structure diagram of the optical fiber coupled acousto-optic device provided in the embodiments of the present application is shown in the figure;

[0029] Figure 2The internal structure schematic diagram of the optical fiber coupling type acousto-optic device provided in the embodiment of the utility model;

[0030] Mark explanation:

[0031] 1 - shell; 11 - locking portion;

[0032] 2 - radiation assembly; 21 - mounting seat; 22 - radiation component;

[0033] 3 - adjustment assembly; 31 - adjustment piece; 32 - mounting piece;

[0034] 4 - input collimator; 5 - output collimator;

[0035] 6 - acousto-optic crystal; 7 - radio frequency interface. DETAILED DESCRIPTION

[0036] The technical scheme of the utility model will be described clearly and completely in combination with the drawings, obviously, the described embodiment is a part of the embodiment of the utility model, instead of all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor belong to the protection scope of the utility model.

[0037] In the description of the utility model, it needs to be explained that the orientation or position relation indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicating or implying that the indicated device or element must have a particular orientation, a particular orientation and operation, therefore, it cannot be understood as the limitation of the utility model. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0038] In the description of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, also can be detachable connection, or integrally connected;It can be mechanical connection, or electrical connection;It can be directly connected, or indirectly connected through intermediate medium, it can be the communication inside two elements. For the ordinary skill in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0039] In addition, the technical features involved in different embodiments of the utility model described below can be combined with each other as long as there is no conflict.

[0040] EMBODIMENT

[0041] The embodiment provides a fiber-coupled acousto-optic device, as shown in Figure 1 and Figure 2 The fiber-coupled acousto-optic device comprises a shell 1, two collimators and a radiation assembly 2, the shell 1 has a containing cavity, the two collimators are arranged on the shell 1 opposite to the containing cavity, and the radiation assembly 2 comprises a mounting seat 21 and a radiation member 22, the mounting seat 21 is arranged in the containing cavity, and the radiation member 22 is detachably arranged on the mounting seat 21, and the radiation member 22 has a radiation surface which is adapted to refract and diffract light so as to increase the range of the collimator receiving diffracted light.

[0042] The fiber-coupled acousto-optic device has the advantages that the two collimators and the radiation assembly 2 are arranged on the shell 1, the shell 1 has the containing cavity, the two collimators are arranged on the shell 1 opposite to the containing cavity, the radiation assembly 2 comprises the mounting seat 21 and the radiation member 22, the radiation member 22 is a lens in the embodiment, the mounting seat 21 is arranged in the containing cavity, the radiation member 22 is detachably arranged on the mounting seat 21, and the radiation member 22 has the radiation surface which is a curved surface on the lens and can refract diffracted light, so that when external laser beams enter the containing cavity through one collimator and are diffracted into diffracted light in the containing cavity, the radiation surface of the radiation member 22 can refract the diffracted light, and the diffracted light passing through the radiation surface of the radiation member 22 can be focused on a point, so that the range of the other collimator receiving diffracted light can be increased, the acceptance angle of the collimator is virtually enlarged, the collimator can receive signals with a larger range of bandwidth, and the practicability of the acousto-optic device is improved.

[0043] In addition, the position of the mounting seat 21 in the containing cavity is fixed, so that the distance between the radiation member 22 and the collimator is fixed, and different models of the radiation member 22 can be arranged on the mounting seat 21 to change the focal point of diffracted light passing through the radiation surface, so that the receiving end of the collimator can be located near the focal point of the radiation surface and receive diffracted light refracted by the radiation surface, and the collimator can receive diffracted light with a larger range by replacing the radiation member 22.

[0044] The fiber-coupled acousto-optic device provided by the embodiment further comprises an acousto-optic crystal 6, the acousto-optic crystal 6 is arranged in the containing cavity and between the two collimators, and the acousto-optic crystal 6 is adapted to diffract laser beams into diffracted light. Figure 2

[0045] ​The optical fiber coupling type acousto-optic device with the above structure is capable of diffracting the laser beam into diffracted light by the acousto-optic crystal 6 arranged in the accommodating cavity, and the acousto-optic crystal 6 is arranged between the two collimators, and the acousto-optic crystal 6 is capable of diffracting the laser beam into diffracted light when the laser beam is shot into the accommodating cavity by one of the collimators, and the diffracted light is shot to the other collimator, so that the other collimator can receive the diffracted light.

[0046] The optical fiber coupling type acousto-optic device provided by the embodiment has the advantages that Figure 1 and Figure 2 as shown in the figure, one of the collimators is used as an input collimator 4, and the other collimator is used as an output collimator 5, the input collimator 4 is adapted to emit the laser beam into the accommodating cavity, and the output collimator 5 is adapted to receive the diffracted light in the accommodating cavity.

[0047] The optical fiber coupling type acousto-optic device with the above structure is capable of distinguishing the functions of the two collimators by arranging the two collimators as the input collimator 4 and the output collimator 5, that is, the input collimator 4 is capable of shooting the laser beam to the accommodating cavity, and the output collimator 5 is capable of receiving the diffracted light in the accommodating cavity, and the receiving end of the collimator is specifically the receiving end of the output collimator 5.

[0048] The optical fiber coupling type acousto-optic device provided by the embodiment has the advantages that Figure 2 as shown in the figure, the receiving end of the output collimator 5 corresponds to the refractive focal point of the radiation surface.

[0049] The optical fiber coupling type acousto-optic device with the above structure is capable of corresponding the receiving end of the output collimator 5 to the refractive focal point of the radiation surface, that is, the receiving end of the output collimator 5 and the refractive focal point of the radiation surface are exactly at the same point, or the receiving end of the output collimator 5 is located at a position near the refractive focal point of the radiation surface, and the position is specifically a position at which the receiving end of the output collimator 5 can completely receive the refracted diffracted light, so that the output collimator 5 can diffract light in a larger range, and the practicality of the acousto-optic device is further improved.

[0050] The optical fiber coupling type acousto-optic device provided by the embodiment has the advantages that Figure 1 and Figure 2 as shown in the figure, the optical fiber coupling type acousto-optic device further comprises at least two adjusting assemblies 3, the two adjusting assemblies 3 are arranged on the shell 1 relative to the accommodating cavity, and the two collimators are arranged on one adjusting assembly 3.

[0051] The optical fiber coupling type acousto-optic device with the above structure can adjust the position of the receiving end of the output collimator 5 by rotating the two adjusting assemblies 3 arranged on the shell 1, and correspond the receiving end of the output collimator 5 to the refractive focal point of the radiation surface.

[0052] The optical fiber coupling type acousto-optic device provided in the embodiment has the advantages that Figure 1 and Figure 2 The adjusting assembly 3 includes an adjusting piece 31 and a mounting piece 32, the adjusting piece 31 is arranged on the shell 1 in a rotating manner, the mounting piece 32 is arranged on the adjusting piece 31, and the collimator is arranged on the mounting piece 32.

[0053] The optical fiber coupling type acousto-optic device with the above structure can adjust the position of the receiving end of the output collimator 5 by rotating the two adjusting assemblies 3 arranged on the shell 1, and correspond the receiving end of the output collimator 5 to the refractive focal point of the radiation surface.

[0054] The optical fiber coupling type acousto-optic device provided in the embodiment has the advantages that Figure 1 and Figure 2 The shell 1 is provided with at least two rotating portions, the two rotating portions are arranged opposite to the accommodating cavity, and the two adjusting pieces 31 are arranged in the rotating portions in a rotating manner.

[0055] The optical fiber coupling type acousto-optic device with the above structure can adjust the position of the receiving end of the output collimator 5 by rotating the two adjusting assemblies 3 arranged on the shell 1, and correspond the receiving end of the output collimator 5 to the refractive focal point of the radiation surface.

[0056] The optical fiber coupling type acousto-optic device provided in the embodiment has the advantages that Figure 1 and Figure 2 The mounting piece 32 has a mounting cavity in communication with the accommodating cavity, the collimator is arranged in the mounting cavity, and the end of the collimator is arranged in the accommodating cavity.

[0057] The fiber-coupled acousto-optic device with the above structure has the mounting cavity arranged in communication with the accommodating cavity, so that the collimator can be mounted in the mounting cavity, and then the collimator can be mounted on the adjusting member 31 and rotate with the rotation of the adjusting member 31, and since the mounting cavity is arranged in communication with the accommodating cavity, the end of the collimator can be in the accommodating cavity, and then the input end of the input collimator 4 can emit the laser beam into the accommodating cavity, and the receiving end of the output collimator 5 can receive the diffracted light.

[0058] The fiber-coupled acousto-optic device provided by the embodiment has the following advantages. Figure 2 As shown in the figure, the shell 1 is provided with a locking portion 11 in communication with the rotating portion; and a fastener is arranged to abut against the adjusting member 31 through the locking portion 11 under the action of an external force, so as to fix the adjusting member 31.

[0059] The fiber-coupled acousto-optic device with the above structure has the locking portion 11 arranged on the shell 1 and the fastener arranged in the locking portion 11, the locking portion 11 is a locking hole in the embodiment, and the fastener is a fastening screw in the embodiment, wherein the locking portion 11 is arranged in communication with the rotating portion, so that when the fastener passes through the locking portion 11 under the action of an external force, the fastener can extend into the rotating portion, and then the fastener can abut against the adjusting member 31 in the rotating portion, so that after the rotation of the adjusting member 31 is completed, the fastener can fix the adjusting member 31, so as to avoid the continuous rotation of the adjusting member 31.

[0060] The fiber-coupled acousto-optic device provided by the embodiment has the following advantages. Figure 1 and Figure 2 As shown in the figure, the shell 1 is provided with a locking portion 11 in communication with the rotating portion; and a fastener is arranged to abut against the adjusting member 31 through the locking portion 11 under the action of an external force, so as to fix the adjusting member 31.

[0061] The fiber-coupled acousto-optic device with the above structure has the fastener arranged on the shell 1, and the fastener is arranged in the accommodating cavity, so that the part outside the accommodating cavity can be electrically connected to an external power supply, and the electrical signal can be provided to the accommodating cavity through the impedance matching circuit electrically connected to the part in the accommodating cavity, and the carrier signal can pass through the piezoelectric transducer on the acousto-optic device electrically connected to the impedance matching circuit, and then the electrical signal is converted into an acoustic signal.

[0062] The optical fiber coupling type acousto-optic device provided by the utility model, through two collimators and radiation components 2 arranged on the shell 1, wherein the shell 1 has a containing cavity, the two collimators are arranged on the shell 1 opposite the containing cavity, the radiation components 2 comprise a mounting seat 21 and a radiation component 22, the radiation component 22 is a lens in the embodiment, wherein the mounting seat 21 is arranged in the containing cavity, the radiation component 22 is detachably arranged on the mounting seat 21, and the radiation component 22 further has a radiation surface, the radiation surface is a curved surface on the lens in the embodiment, and the radiation surface can refract the diffracted light, so that when the laser beam from the outside is shot into the containing cavity through a collimator and diffracted into diffracted light in the containing cavity, the radiation surface of the radiation component 22 can refract the diffracted light, and then the diffracted light passing through the radiation surface of the radiation component 22 can be focused on a point, so that the range of the diffracted light received by the other collimator can be increased, thereby the acceptance wide angle of the collimator is enlarged, the collimator can receive signals with a larger range of bandwidth, and the practicability of the acousto-optic device is improved; in addition, since the position of the mounting seat 21 in the containing cavity is fixed, the distance between the radiation component 22 and the collimator is fixed, so that different models of radiation components 22 can be installed on the mounting seat 21 to change the focal point of the diffracted light passing through the radiation surface, and then the receiving end of the collimator can be located near the focal point of the radiation surface and receive the diffracted light refracted by the radiation surface, so that the collimator can receive a larger range of diffracted light by replacing the radiation component 22.

[0063] Obviously, the above embodiments are only examples for clearly illustrating but not limiting the embodiments. Other different forms of changes or variations can be made by those skilled in the art on the basis of the above description. All the embodiments need not and cannot be exhausted here. The obvious changes or variations derived therefrom are still within the protection scope of the utility model.

Claims

1. An optical fiber-coupled acousto-optic device, characterized by, The application relates to a laser device, which comprises: a shell (1) with a containing cavity; at least two collimators, which are arranged on the shell (1) opposite the containing cavity; a radiation assembly (2) comprising a mounting base (21) arranged in the containing cavity and a radiation element (22) detachably arranged on the mounting base (21), the radiation element (22) having a radiation surface adapted to refract and diffract light so as to increase the range of the collimators receiving the diffracted light.

2. The fiber-coupled acousto-optic device of claim 1, wherein, The device further comprises an acousto-optic crystal (6) arranged in the containing cavity and between the two collimators, the acousto-optic crystal (6) being adapted to diffract a laser beam into diffracted light.

3. The fiber-coupled acousto-optic device of claim 2, wherein, In the two collimators, one is an input collimator (4) adapted to emit a laser beam into the containing cavity, and the other is an output collimator (5) adapted to receive the diffracted light in the containing cavity.

4. The fiber-optically coupled acousto-optic device of claim 3, wherein, The receiving end of the output collimator (5) corresponds to the refractive focal point of the radiation surface.

5. The fiber-coupled acousto-optic device of any of claims 1-4, wherein, The device further comprises at least two adjusting assemblies (3) arranged on the shell (1) opposite the containing cavity, and the two collimators are arranged on the two adjusting assemblies (3) respectively.

6. The fiber-optically coupled acousto-optic device of claim 5, wherein, The adjusting assembly (3) comprises an adjusting member (31) arranged rotatably on the shell (1) and a mounting member (32) arranged on the adjusting member (31) and on which the collimator is arranged.

7. The fiber-optically coupled acousto-optic device of claim 6, wherein, The shell (1) is provided with at least two rotating portions arranged opposite the containing cavity, and the two adjusting members (31) are arranged rotatably in the two rotating portions respectively.

8. The fiber-optically coupled acousto-optic device of claim 7, wherein, The mounting member (32) is provided with a mounting cavity in communication with the containing cavity, and the collimator is arranged in the mounting cavity and the end of the collimator is arranged in the containing cavity.

9. The fiber coupled acousto-optic device of claim 8, wherein, The shell (1) is provided with a locking portion (11) arranged in communication with the rotating portion; and the device further comprises a fastener adapted to abut against the adjusting member (31) through the locking portion (11) under the action of external force so as to fix the adjusting member (31).

10. The fiber-optically coupled acousto-optic device of claim 9, wherein, The device further comprises a radio frequency interface (7) arranged on the shell (1) and partially arranged in the containing cavity and partially arranged outside the containing cavity.

Images