CN219610985U - Electric light Q-switch without window DKDP - Google Patents

Abstract

The utility model relates to the technical field of Q-switched lasers, and provides a windowless DKDP electro-optical Q-switched switch, which comprises: the device shell is detachably connected with end covers at the left end and the right end of the device shell; the sealing ring is embedded on the inner side wall of the end cover; the DKDP crystal core is arranged in the device shell, gold-plated electrodes are respectively arranged at two ends of the DKDP crystal core, and conductive rubber rings are arranged on the outer side walls of the gold-plated electrodes; electrode jack, electrode jack runs through and sets up on the lateral wall of device casing, one side surface of end cover runs through and has set up screw hole one, the screw hole two with screw hole one assorted is seted up respectively at the both ends of device casing, through device casing that sets up, the end cover, the sealing washer, electrically conductive rubber ring, electrode jack and gilding electrode, adopt no window design, avoid window light damage resistance performance not enough and lead to the device damage, be aided with corresponding seal structure, low in manufacturing cost, obtain the electro-optic Q-switch device that light damage resistance performance can satisfy some harsh application scenario.

Description

Electric light Q-switch without window DKDP

Technical Field

The utility model relates to the technical field of Q-switched lasers, in particular to a windowless DKDP electro-optic Q-switched switch.

Background

The electro-optical Q-switch is also called a Prkerr box and an electro-optical modulation box, is commonly used in a laser resonant cavity to actively modulate laser and generate strong pulses with the length of nanosecond magnitude, and is a core device of a laser light source system. Because DKDP (potassium dideuterium phosphate) crystals have excellent electro-optical performance and are easy to manufacture into large-size devices, electro-optical Q-switching switches manufactured by using DKDP crystals are one of the electro-optical modulation devices most widely used in the fields of industry, national defense and scientific research at present.

The retrieved Chinese patent number CN209948323U relates to a DKDP electro-optic Q-switch, which belongs to the technical field of switches and comprises a main body, wherein crystals are installed in the main body, notches are formed in the left end and the right end of the main body, a first sealing ring is installed in the notches, a window is installed on the outer side of the first sealing ring, end covers fixedly connected with the window are installed at the left end and the right end of the main body, an exhaust hole is further formed in the bottom of the main body, and a sealing rubber pad matched with the exhaust hole is installed in the exhaust hole; according to the utility model, the vent holes are added on the main structure of the Q-switch, when the window sheets at two ends of the Q-switch are packaged, the vent holes are added, gas is discharged along the vent holes along with the reduction of the volume of the cavity, the stability of the gas pressure is kept, and after the end cover is screwed in place, the air vibration caused by the change of the gas pressure in the Q-switch is not formed, so that the probability of ash falling during the assembly of the Q-switch is effectively reduced, after the end cover is assembled, the vent holes are sealed by using jackscrews and sealing rubber gaskets, the integral air tightness of the Q-switch is ensured, and the service life is prolonged.

However, the implementation of the DKDP electro-optic Q-switch has the following problems: under the high-power or high-energy use condition, the DKDP electro-optical Q switch causes the integral damage of a DKDP crystal core or a device due to the insufficient light damage resistance of a window sheet.

Disclosure of Invention

The utility model provides a windowless DKDP electro-optic Q-switch, which solves the problem of integral damage of a DKDP crystal core or a device caused by insufficient light damage resistance of windowed sheets in the related technology.

The technical scheme of the utility model is as follows: a windowless DKDP electro-optic Q-switch comprising:

the device comprises a device shell, and end covers detachably connected to the left end and the right end of the device shell;

the sealing ring is embedded on the inner side wall of the end cover;

the DKDP crystal core is arranged in the device shell, gold-plated electrodes are respectively arranged at two ends of the DKDP crystal core, and conductive rubber rings are arranged on the outer side walls of the gold-plated electrodes;

and the electrode jack is arranged on the inner side wall of the device shell.

Preferably, a first screw hole is formed in a surface of one side of the end cover in a penetrating manner.

Preferably, two ends of the device housing are respectively provided with a second screw hole matched with the first screw hole.

Preferably, a heat dissipation cavity is formed in the device shell, and a spiral tube is installed in the device shell through the heat dissipation cavity.

Preferably, a first filling pipe is installed on the outer side wall of the device shell, one end of the first filling pipe extends to the inside of the heat dissipation cavity, and a rubber plug is clamped at the port of the first filling pipe.

Preferably, an annular plate is sleeved on the outer side wall of the DKDP crystal core, a first heat conducting column is fixedly installed on the outer side wall of the annular plate, and one end of the first heat conducting column extends to the inside of the heat dissipation cavity.

Preferably, the outer side wall of the device shell is fixedly provided with a liquid tank, the top of the liquid tank is fixedly provided with a second filling pipe, a sealing plug is clamped at a port of the second filling pipe, a conveying pump and a second connecting pipe are respectively arranged on the outer wall of the bottom of the liquid tank, the output end of the conveying pump is connected with a first connecting pipe, one end of the first connecting pipe extends to a heat dissipation cavity to be connected with one end of the spiral pipe, and one end of the second connecting pipe extends to the heat dissipation cavity to be connected with the other end of the spiral pipe.

Preferably, the top of the liquid tank is provided with a second heat conducting column in a penetrating mode, and the top of the second heat conducting column is fixedly connected with a heat radiating plate.

The working principle and the beneficial effects of the utility model are as follows:

according to the utility model, through the arranged device shell, the end cover, the sealing ring, the conductive rubber ring, the electrode jack and the gold-plated electrode, the design without the window is adopted, the damage to the device caused by insufficient light damage resistance of the window is avoided, the corresponding sealing structure is adopted, the manufacturing cost is low, and the electro-optical Q-switched device with light damage resistance capable of meeting part of harsh application scenes is obtained.

Drawings

The utility model will be described in further detail with reference to the drawings and the detailed description.

FIG. 1 is a schematic overall perspective view of the present utility model;

FIG. 2 is a schematic plan view of an end cap according to the present utility model;

FIG. 3 is a perspective cross-sectional view of the device housing of the present utility model;

fig. 4 is a schematic plan view of a device housing according to the present utility model.

In the figure: 1. a device housing; 2. an end cap; 3. a seal ring; 4. a DKDP crystal core; 5. a conductive rubber ring; 6. an electrode jack; 7. a gold-plated electrode; 8. a first screw hole; 9. screw holes II; 10. an annular plate; 11. a first heat conduction column; 12. a heat dissipation cavity; 13. a liquid tank; 14. a transfer pump; 15. a first connecting pipe; 16. a spiral tube; 17. a second connecting pipe; 18. a second heat conduction column; 19. a heat dissipation plate; 20. a first filling pipe; 21. and a second filling pipe.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the present utility model provides a technical solution for a windowless DKDP electro-optical Q-switch: comprising the following steps: the device comprises a device shell 1, wherein the device shell 1 is cylindrical, made of engineering plastic materials and is detachably connected with end covers 2 at the left end and the right end of the device shell 1; the sealing ring 3 is embedded on the inner side wall of the end cover 2; the end cover 2 is annular, is made of engineering plastics or ceramics, and is internally provided with a concave groove for installing the sealing ring 3; the DKDP crystal core 4 is arranged in the device shell 1, the sealing ring 3 is made of silica gel or other rubber materials, is resistant to high and low temperature, acid and alkali corrosion, aging, radiation and strong vibration, does not deform, is in close contact with the DKDP crystal core 4, the DKDP crystal core 4 is cylindrical, front and rear end surfaces are subjected to optical polishing treatment and coated with films, and the films are resistant to scraping, corrosion and dust adhesion; the other side surfaces are subjected to fine grinding treatment, gold-plated electrodes 7 are respectively arranged at two ends of the DKDP crystal core 4, and conductive rubber rings 5 are arranged on the outer side walls of the gold-plated electrodes 7; the conductive rubber ring 5 is annular and made of conductive silica gel, is sleeved at two ends of the DKDP crystal core 4, is closely contacted with the gold-plated electrode 7 by the inner test, is closely contacted with the inner wall of the device shell 1 by the outer side, and is provided with an electrode jack 6, and the electrode jack 6 is arranged on the inner wall of the device shell 1;

the device shell 1 is arranged in the laser resonant cavity and is strictly coincident with the central axes of other devices in the resonant cavity, such as a laser crystal, an input mirror, an output mirror, a wave plate and the like, laser emitted by the laser crystal enters the device shell 1 through one end of the device, passes through the DKDP crystal core 4, and is emitted from the other end of the device shell 1, the DKDP crystal core 4 is connected with an external alternating current power supply through an electrode jack 6, when voltage is applied to the crystal, the DKDP crystal core 4 allows light beams to pass through, when the voltage is removed, the DKDP crystal core 4 does not allow the light beams to pass through, so that the opening and closing of a light path can be controlled by controlling the application and removal of the voltage, and when the light path is closed, the laser oscillates back and forth in the resonant cavity to perform energy accumulation and particle number inversion; when the energy accumulation in the resonant cavity is enough and the population inversion reaches a maximum value, the optical path is opened, thereby obtaining strong laser output.

Specifically, a first screw hole 8 is formed in one side surface of the end cover 2 in a penetrating manner, and a second screw hole 9 matched with the first screw hole 8 is formed at two ends of the device shell 1 respectively;

the screw penetrates through the first screw hole 8 and is connected with the second screw hole 9, so that the end cover 2 is conveniently installed at two ends of the device shell 1.

Specifically, a heat dissipation cavity 12 is formed in the device housing 1, a spiral pipe 16 is installed in the device housing 1 through the heat dissipation cavity 12, a filling pipe I20 is installed on the outer side wall of the device housing 1, one end of the filling pipe I20 extends to the inside of the heat dissipation cavity 12, a rubber plug is clamped at the port of the filling pipe I20, an annular plate 10 is sleeved on the outer side wall of the DKDP crystal core 4, a first heat conduction column 11 is fixedly installed on the outer side wall of the annular plate 10, one end of the first heat conduction column 11 extends to the inside of the heat dissipation cavity 12, a liquid tank 13 is fixedly installed on the outer side wall of the device housing 1, a filling pipe II 21 is fixedly installed at the top of the liquid tank 13, a sealing plug is clamped at the port of the filling pipe II 21, a conveying pump 14 and a connecting pipe II 17 are installed on the outer wall at the bottom of the liquid tank 13 respectively, the output end of the conveying pump 14 is connected with a connecting pipe I15, one end of the connecting pipe I15 extends to one end of the heat dissipation cavity 12 and 16, one end of the connecting pipe II 17 extends to the other end of the heat dissipation cavity 12 and 16;

the cooling liquid is added into the heat dissipation cavity 12 through the first filling pipe 20, heat generated by the DKDP crystal core 4 is led into the heat dissipation cavity 12 through the annular plate 10 and the first heat conduction column 11 to cool, the conveying pump 14 conveys water in the liquid tank 13 to the spiral pipe 16 through the first connecting pipe 15 to cool the cooling liquid, and finally the water enters the liquid tank 13 through the second connecting pipe 17 to circulate to cool the DKDP crystal core 4 sufficiently.

Specifically, the top of the liquid tank 13 is provided with a second heat-conducting column 18 in a penetrating way, and the top end of the second heat-conducting column 18 is fixedly connected with a heat dissipation plate 19;

after the heat generated by the water in the liquid tank 13 is generated, the heat is transferred to the heat dissipation plate 19 through the second heat conduction column 18 to dissipate the heat.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims (8)

1. A windowless DKDP electro-optic Q-switch comprising:

the device comprises a device shell (1) and end covers (2) detachably connected to the left end and the right end of the device shell (1);

the sealing ring (3) is embedded on the inner side wall of the end cover (2);

the DKDP crystal core (4), the DKDP crystal core (4) is arranged in the device shell (1), gold-plated electrodes (7) are respectively arranged at two ends of the DKDP crystal core (4), and conductive rubber rings (5) are arranged on the outer side walls of the gold-plated electrodes (7);

the electrode jack (6) is arranged on the inner side wall of the device shell (1).

2. The windowless DKDP electro-optical Q-switch of claim 1, wherein a side surface of the end cap (2) is provided with a screw hole (8) therethrough.

3. The windowless DKDP electro-optical Q-switch of claim 2, wherein two ends of the device housing (1) are respectively provided with a screw hole two (9) matching with the screw hole one (8).

4. The windowless DKDP electro-optical Q-switch of claim 1, wherein the device housing (1) has a heat dissipating cavity (12) formed therein, and the device housing (1) is provided with a spiral tube (16) through the heat dissipating cavity (12).

5. The windowless DKDP electro-optical Q-switch of claim 4, wherein a first filling pipe (20) is installed on the outer side wall of the device housing (1), one end of the first filling pipe (20) extends into the heat dissipation cavity (12), and a rubber plug is clamped at the port of the first filling pipe (20).

6. The windowless DKDP electro-optical Q-switch of claim 4, wherein the outer side wall of the DKDP crystal core (4) is sleeved with an annular plate (10), the outer side wall of the annular plate (10) is fixedly provided with a first heat conducting column (11), and one end of the first heat conducting column (11) extends into the heat dissipation cavity (12).

7. The windowless DKDP electro-optical Q-switch of claim 4, wherein a liquid tank (13) is fixedly installed on the outer side wall of the device housing (1), a filling pipe two (21) is fixedly installed at the top of the liquid tank (13), a sealing plug is clamped at the port of the filling pipe two (21), a delivery pump (14) and a connecting pipe two (17) are installed on the outer bottom wall of the liquid tank (13), the output end of the delivery pump (14) is connected with a connecting pipe one (15), one end of the connecting pipe one (15) extends to the heat dissipation cavity (12) and is connected with one end of the spiral pipe (16), and one end of the connecting pipe two (17) extends to the heat dissipation cavity (12) and is connected with the other end of the spiral pipe (16).

8. The windowless DKDP electro-optical Q-switch of claim 7, wherein the top of the liquid tank (13) is provided with a second heat conducting column (18) in a penetrating way, and the top of the second heat conducting column (18) is fixedly connected with a heat dissipating plate (19).