An electro-optical crystal Q-switching switch with gold-plated side surfaces

Abstract

The utility model relates to the technical field of electro-optical Q-switching switches, and proposes a side-gold-plated electro-optical crystal Q-switching switch, comprising: an upper insulating shell and a lower insulating shell matched with the upper insulating shell, a center of one side of the lower insulating shell having a notch one, an inner wall of the notch one being provided with an electro-optical crystal, a side of the lower insulating shell having a groove two, an electrode connecting column being embedded in the groove two, and a connecting groove being provided on the end face of the electrode connecting column. Conductive silver glue is used to bond the gold-plated layer and copper foil on the side of the electro-optical crystal. The conductive silver glue has a certain bonding force and conductive properties. The electro-optical crystal and the copper foil are bonded to lead out the electrical connection of the electro-optical crystal, thereby avoiding the influence of high temperature on the electro-optical crystal during welding or the high cost of welding equipment. The copper foil and the conductive silver glue are both soft in texture and can be peeled off from the electro-optical crystal by external force. When the electro-optical crystal needs to be repaired, it is easy to disassemble without damaging the crystal.

Description

Technical Field

[0001] The utility model relates to the technical field of electro-optical Q-switching switches, in particular to an electro-optical crystal Q-switching switch with gold-plated side surfaces. Background Art

[0002] The electro-optic Q-switch is the most widely used Q-switch at this stage. It is mainly used in pulsed lasers. The electro-optic switch mainly uses the electro-optic effect of the crystal. When a certain voltage is applied to the crystal, the polarized light will change its polarization state after passing through the crystal, and the light can be passed through and cut off to adjust the Q value in the laser cavity, thereby obtaining a giant pulse with narrow pulses and high peak power. The electro-optic Q-switching rate is fast, and a switching action can be completed within nanoseconds, so that the peak power density of the laser can reach the gigawatt level per square centimeter. Due to the above advantages of Q-switched lasers, they are widely used in medical, military, scientific research and other fields. Common electro-optic crystals include: KD*P, LiNbO3 and BBO, etc. The material of electro-optic crystals is relatively soft and fragile. To make it into an electro-optic Q-switch, it needs to be packaged. The package includes shell protection and electrical connection to pressurize the electro-optic crystal;

[0003] The side of the electro-optic crystal is plated with a gold layer. The common electrical connection method uses gold wire ball welding to weld gold wire from the gold-plated side of the crystal, and then lead the gold wire to the conductive part on the shell, and then lead the electrode needle from the conductive part on the shell. This method requires expensive welding equipment and professionals with certain welding skills. Therefore, a side gold-plated electro-optic crystal Q-switched switch is proposed. Utility Model Content

[0004] The utility model proposes an electro-optical crystal Q-switching switch with gold-plated side surfaces, which solves the problem that a common electrical connection method in the related art uses a gold wire ball welding method to weld a gold wire from the gold-plated side surface of the crystal, then leads the gold wire to a conductive part on a shell, and then leads an electrode needle from the conductive part on the shell, and this method requires expensive welding equipment and professionals with certain welding skills.

[0005] The technical solution of the utility model is as follows: a side-gold-plated electro-optic crystal Q-switching switch, comprising: an upper insulating shell and a lower insulating shell matched with the upper insulating shell, a notch 1 is provided at the center of one side of the lower insulating shell, an electro-optic crystal is provided on the inner wall of the notch 1, a groove 2 is provided on one side of the lower insulating shell, an electrode connecting column is embedded in the groove 2, and a connecting groove is provided on the end surface of the electrode connecting column;

[0006] The surfaces of both sides of the electro-optical crystal are provided with a gold-plated layer, the surface of the gold-plated layer is provided with a conductive silver paste, one side of the conductive silver paste is provided with a copper foil, the surface of the upper insulating shell is provided with a connecting hole, and the inner wall of the connecting hole is provided with an electrode needle.

[0007] Optionally, an inner wall of the connecting groove is provided with an internal thread, and one end of the surface of the electrode needle is provided with an external thread matching the internal thread.

[0008] Optionally, a limiting ring is provided on the outer surface of the electrode needle, and the limiting ring is rotatably connected to the electrode needle.

[0009] Optionally, gaskets are fixedly connected to the four corners of the bottom end of the lower insulating shell.

[0010] Optionally, the diameter of the connection groove is smaller than the diameter of the electrode connection column, and the end surface of the electrode connection column is in contact with the copper foil.

[0011] Optionally, the inner wall of the notch 1 is coated with insulating silicone, and the notch 1 is connected to the electro-optical crystal through the insulating silicone.

[0012] Optionally, a sealing ring is provided between the upper insulating shell and the lower insulating shell.

[0013] The working principle and beneficial effects of the utility model are:

[0014] 1. The present application uses insulating silicone to fix the electro-optical crystal, thus avoiding the disadvantage of the extrusion fixing method which may bring external force to the electro-optical crystal.

[0015] 2. The present application uses conductive silver glue to bond the gold-plated layer and copper foil on the side of the electro-optical crystal. The conductive silver glue has a certain bonding force and conductive properties. It bonds the electro-optical crystal and the copper foil to lead out the electrical connection of the electro-optical crystal, avoiding the impact of high temperature on the electro-optical crystal during welding or the high cost of welding equipment. The copper foil and the conductive silver glue are both soft in texture and can be peeled off from the electro-optical crystal by external force. When the electro-optical crystal needs to be repaired, it is easy to disassemble without damaging the crystal.

[0016] 3. An electrode needle with an external thread at the bottom and a limiting ring at the upper end is designed, which is screwed into the electrode connecting column and plays the role of fixing and electrical connection at the same time, killing two birds with one stone and saving accessories.

[0017] Fourth, after the upper insulating shell and the lower upper insulating shell are fixed by using the electrode needle, the upper insulating shell presses the copper foil onto the end surface of the electrode connecting column, thereby realizing the electrical connection between the two. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0019] Figure 1 The three-dimensional structure of the utility model is shown in FIG. Figure 1 ;

[0020] Figure 2 The three-dimensional structure of the utility model is shown in FIG. Figure 2 ;

[0021] Figure 3 It is a schematic cross-sectional structural diagram of the upper insulating shell and the lower insulating shell in the utility model;

[0022] Figure 4 It is a schematic diagram of the cross-sectional structure of the electrode connecting column in the utility model;

[0023] In the figure: 1. upper insulating shell; 2. lower insulating shell; 3. electrode needle; 4. limiting ring; 5. gasket; 6. electrode connecting column; 7. electro-optical crystal; 8. connecting groove; 9. copper foil; 10. conductive silver glue; 11. gold-plated layer. DETAILED DESCRIPTION

[0024] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1 - Figure 4 The utility model provides a side-gold-plated electro-optic crystal Q-switching switch, comprising: an upper insulating shell 1 and a lower insulating shell 2 matched with the upper insulating shell 1, a notch 1 is provided at the center of one side of the lower insulating shell 2, an electro-optic crystal 7 is provided on the inner wall of the notch 1, a groove 2 is provided on one side of the lower insulating shell 2, an electrode connecting column 6 is embedded in the groove 2, and a connecting groove 8 is provided on the end surface of the electrode connecting column 6;

[0026] The surfaces of both sides of the electro-optical crystal 7 are provided with a gold-plated layer 11, the surface of the gold-plated layer 11 is provided with a conductive silver paste 10, one side of the conductive silver paste 10 is provided with a copper foil 9, and the surface of the upper insulating shell 1 is provided with a connecting hole, and the inner wall of the connecting hole is provided with an electrode needle 3.

[0027] Furthermore, an internal thread is provided on the inner wall of the connecting groove 8, an external thread matching the internal thread is provided on one end of the surface of the electrode needle 3, a limiting ring 4 is provided on the outer surface of the electrode needle 3, and the limiting ring 4 is rotatably connected to the electrode needle 3. Gaskets 5 are fixedly connected at the four corners of the bottom end of the lower insulating shell 2. The diameter of the connecting groove 8 is smaller than the diameter of the electrode connecting column 6, and the end face of the electrode connecting column 6 is in contact with the copper foil 9. The inner wall of the notch is coated with insulating silicone, and the notch is connected to the electro-optical crystal 7 through the insulating silicone. A sealing ring is provided between the upper insulating shell 1 and the lower insulating shell 2.

[0028] During installation of the present application, the electrode connecting column 6 is installed into the groove 2 of the lower insulating shell 2, and then the copper foil 9 is adhered to the gold-plated layer 11 on the side of the electro-optical crystal 7 with the conductive silver glue 10, and the groove 1 of the lower insulating shell 2 is coated with insulating silicone, and then the electro-optical crystal 7 is fixed therein, and one end of the copper foil 9 that is not adhered with the conductive silver glue 10 is attached to the end face of the electrode connecting column 6, and finally the upper insulating shell 1 is buckled on the end face of the lower insulating shell 2, and a sealing ring is placed between the two, and the electrode needle 3 is passed through the connection hole on the surface of the upper insulating shell 1, and is threadedly connected with the internal thread in the electrode connecting column 6, and the upper insulating shell 1 is fixed to the lower insulating shell 2, and at the same time, the upper insulating shell 1 presses the copper foil 9 on the end face of the electrode connecting column 6, and one end of the electrode needle 3 is exposed outside the upper insulating shell 1 for connecting an external power supply;

[0029] When in use, the gold-plated layer 11 on the side of the electro-optical crystal 7 contacts the copper foil 9, the copper foil 9 contacts the electrode connecting column 6, and the electrode connecting column 6 contacts the electrode needle 3, thereby realizing the electrical connection of the Q-switching switch.

[0030] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An electro-optical crystal Q-switched switch with gold-plated sides, characterized in that: include: An upper insulating shell (1) and a lower insulating shell (2) matched with the upper insulating shell (1), wherein one side of the lower insulating shell (2) has a notch 1 at the center, an inner wall of the notch 1 is provided with an electro-optical crystal (7), one side of the lower insulating shell (2) has a groove 2, an electrode connecting column (6) is embedded in the groove 2, and an end surface of the electrode connecting column (6) is provided with a connecting groove (8); The surfaces of both sides of the electro-optical crystal (7) are provided with a gold-plated layer (11), the surface of the gold-plated layer (11) is provided with a conductive silver paste (10), one side of the conductive silver paste (10) is provided with a copper foil (9), and the surface of the upper insulating shell (1) is provided with a connection hole, and the inner wall of the connection hole is provided with an electrode needle (3).

2. The electro-optical crystal Q-switched switch with gold-plated side surfaces according to claim 1, characterized in that: An inner wall of the connection groove (8) is provided with an internal thread, and one end of the surface of the electrode needle (3) is provided with an external thread matching the internal thread.

3. The electro-optical crystal Q-switched switch with gold-plated side surfaces according to claim 1, characterized in that: The outer surface of the electrode needle (3) is provided with a limiting ring (4), and the limiting ring (4) is rotatably connected to the electrode needle (3).

4. The electro-optical crystal Q-switched switch with gold-plated side surfaces according to claim 1, characterized in that: Gaskets (5) are fixedly connected to the four corners of the bottom end of the lower insulating shell (2).

5. The electro-optical crystal Q-switched switch with gold-plated side surfaces according to claim 1, characterized in that: The diameter of the connection groove (8) is smaller than the diameter of the electrode connection column (6), and the end surface of the electrode connection column (6) is in contact with the copper foil (9).

6. The electro-optical crystal Q-switched switch with gold-plated side surfaces according to claim 1, characterized in that: The inner wall of the slot one is coated with insulating silicone, and the slot one is connected to the electro-optical crystal (7) via the insulating silicone.

7. The electro-optical crystal Q-switched switch with gold-plated side surfaces according to claim 1, characterized in that: A sealing ring is provided between the upper insulating shell (1) and the lower insulating shell (2).

Images