CN209948325U

CN209948325U - LN Q-switched switch

Info

Publication number: CN209948325U
Application number: CN201921280934.XU
Authority: CN
Inventors: 刘辉; 雷瑞瑞; 刘泽东; 赵全勇
Original assignee: Jinan Zhihe Hongsheng Photoelectric Technology Co Ltd
Current assignee: Jinan Zhihe Hongsheng Photoelectric Technology Co Ltd
Priority date: 2019-08-08
Filing date: 2019-08-08
Publication date: 2020-01-14
Anticipated expiration: 2029-08-08

Abstract

The utility model provides an LN Q-switched switch, belonging to the technical field of laser electro-optical modulation, comprising a switch main body and an LN crystal, wherein the LN crystal is of a cuboid structure, a cavity for installing the LN crystal is arranged in the switch main body, and one side in the switch main body is fixedly connected with an electrode installation plate; six basic surfaces of the LN crystal form a light-passing surface, a non-gold-plated surface and a gold-plated surface which are mutually opposite. The embodiment of the utility model provides a compare in prior art, simple structure has, and is small, easy advantage of operation, through setting up the LN crystal inside a switch main part, realized realizing being connected of LN crystal and external power source through unstressed electrode contact mode, the guard action of LN crystal has been strengthened, simultaneously through the setting of electrode, shift this coupling assembling of being connected with the LN crystal to linking to each other with the electrode, make the original pulling force and the heat that should bear the weight of the LN crystal must disperse, the better LN crystal of having protected.

Description

LN Q-switched switch

Technical Field

The utility model belongs to the technical field of laser instrument electro-optical modulation, specifically a Q switch is transferred to LN.

Background

LN (lithium niobate) crystal is a multifunctional material integrating the performances of nonlinearity, electro-optic, photoelastic and the like, has excellent electro-optic characteristics, large electro-optic coefficient, higher damage-resistant threshold, good thermal stability, wider temperature range of stable operation, difficult deliquescence in chemical stability, application in a transverse electric field and moderate applied voltage, so that the LN Q-switched switch can be made into a compact structure, does not need to be sealed, does not need to be a heat-insulating shell, is small in volume, and is suitable for being applied to a compact Nd: YAG solid laser system.

LN is gold plated on both opposite sides of the LN using lateral compression, and then an external voltage is applied to the LN crystal. Because the LN crystal is broken at high temperature, the gold-plated surface cannot be subjected to ordinary electric welding, and the gold layer is limited in tensile force and cannot be welded with electric connection contacted by external force.

Meanwhile, external stress has a large influence on the birefringence of the LN crystal, the internal optical uniformity of the LN crystal is influenced by the stress, and the electro-optical performance of the LN crystal is influenced, so that a method with stress contact cannot be adopted when the two gold-plated surfaces of the LN are connected with an external power supply.

SUMMERY OF THE UTILITY MODEL

To the not enough of above-mentioned prior art, the embodiment of the utility model provides a technical problem who solves provides a LN transfers Q switch.

In order to solve the technical problem, the utility model provides a following technical scheme:

an LN Q-switched switch comprises a switch main body and an LN crystal, wherein the LN crystal is of a cuboid structure, a cavity for installing the LN crystal is formed in the switch main body, and an electrode installation plate is fixedly connected to one side in the switch main body; six basic surfaces of the LN crystal form a light passing surface, a non-gold-plated surface and a gold-plated surface which are opposite to each other, electrodes are detachably connected to the upper side and the lower side of the electrode mounting plate, the electrodes are connected with the gold-plated surface of the LN crystal through a plurality of leads, and the electrodes are further connected with an external power supply through leads.

As a further improvement of the utility model: and the lead connected between the electrode and the gold-plated surface is a gold wire.

As a further improvement of the utility model: the electrode is provided with a screw hole for a screw to pass through so as to fix the electrode on the electrode mounting plate.

As a further improvement of the utility model: the electrode is made of copper.

As a further improvement of the present invention: the gold-plated surface is a chromium-based gold layer.

As a further improvement of the present invention: and the non-gold-plated surface of the LN crystal is bonded with the inner wall of the switch main body through glue.

Compared with the prior art, the beneficial effects of the utility model are that:

the embodiment of the utility model provides a compare in prior art, simple structure has, and is small, easy advantage of operation, through setting up the LN crystal inside a switch main part, realized realizing being connected of LN crystal and external power source through unstressed electrode contact mode, the guard action of LN crystal has been strengthened, simultaneously through the setting of electrode, shift this coupling assembling of being connected with the LN crystal to linking to each other with the electrode, make the original pulling force and the heat that should bear the weight of the LN crystal must disperse, the better LN crystal of having protected.

Drawings

FIG. 1 is a schematic diagram of an LN Q-switch;

FIG. 2 is a sectional view taken along A-A of an LN Q-switch

In the figure: 1-switch main body, 2-electrode, 3-LN crystal, 4-lead, 5-screw hole, 6-cavity, 7-electrode mounting plate, 8-non-gold plating surface, 9-gold plating surface and 10-light through surface.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

Example 1

Referring to fig. 1-2, the present embodiment provides an LN Q-switched switch, including a switch main body 1 and an LN crystal 3, where the LN crystal 3 is a rectangular parallelepiped structure, a cavity 6 for installing the LN crystal 3 is disposed inside the switch main body 1, and an electrode installation plate 7 is fixedly connected to one side inside the switch main body 1; six basic surfaces of the LN crystal 3 form a light passing surface 10, a non-gold-plated surface 8 and a gold-plated surface 9 which are opposite to each other, the upper side and the lower side of the electrode mounting plate 7 are detachably connected with electrodes 2, the electrodes 2 are connected with the gold-plated surface 9 of the LN crystal 3 through a plurality of leads 4, and the electrodes 2 are further connected with an external power supply through the leads 4.

Through setting up LN crystal 3 inside a switch main part 1, realize being connected of LN crystal 3 and external power supply through the electrode contact mode of unstressed, strengthened LN crystal 3's guard action, simultaneously through the setting of electrode 2, shift originally this coupling assembling who is connected with LN crystal 3 to and link to each other with electrode 2 for pulling force and the heat that LN crystal 3 originally should bear the weight of can disperse, better protection LN crystal 3.

The gold-plated surface 9 is a chromium-based gold layer, and the gold material ensures that the current is uniformly guided to the gold-plated surface 9 of the LN crystal 3, so that the electric field is uniformly distributed.

The lead 4 connected between the electrode 2 and the gold-plated surface 9 is a gold wire, and the lead 4 is respectively connected with the electrode 2 and the gold-plated surface 9 by a gold wire ball bonding mode, and the LN crystal 3 cannot be damaged due to lower technical requirements of gold wire ball bonding and lower generated temperature.

The non-gold-plated surface 8 of the LN crystal 3 is adhered to the inner wall of the switch body 1 through glue, and is used for fixing the LN crystal 3 in the switch body 1.

The working principle of the embodiment is as follows: through setting up LN crystal 3 inside a switch main part 1, realize being connected of LN crystal 3 and external power supply through the electrode contact mode of unstressed, strengthened LN crystal 3's guard action, simultaneously through the setting of electrode 2, shift originally this coupling assembling who is connected with LN crystal 3 to and link to each other with electrode 2 for pulling force and the heat that LN crystal 3 originally should bear the weight of can disperse, better protection LN crystal 3.

Example 2

Referring to fig. 1, in the present embodiment, compared to embodiment 1, a screw hole 5 is disposed on an electrode 2 for a screw to pass through so as to fix the electrode 2 on an electrode mounting plate 7.

The material of the electrode 2 is not limited, and in this embodiment, the material of the electrode 2 is preferably copper.

The embodiment of the utility model provides a compare in prior art, simple structure has, and is small, easy advantage of operation, through setting up LN crystal 3 inside a switch subject 1, realized realizing being connected of LN crystal 3 and external power source through unstressed electrode contact mode, the guard action of LN crystal 3 has been strengthened, simultaneously through the setting of electrode 2, shift this coupling assembling of being connected with LN crystal 3 to linking to each other with electrode 2, make 3 originally tensile force and the heat that should bear the weight of LN crystal get with the dispersion, better protection LN crystal 3.

Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.

Claims

1. An LN Q-switched switch comprises a switch main body (1) and an LN crystal (3), wherein the LN crystal (3) is of a cuboid structure, and is characterized in that a cavity (6) for mounting the LN crystal (3) is formed in the switch main body (1), and an electrode mounting plate (7) is fixedly connected to one side in the switch main body (1); six basic faces of LN crystal (3) form mutually opposite light-passing face (10), non-gilt face (8) and gilt face (9), both sides can be dismantled about electrode mounting panel (7) and be connected with electrode (2), electrode (2) are connected with gilt face (9) of LN crystal (3) through a plurality of wire (4), and electrode (2) still are connected with external power source through wire (4).

2. An LN Q-switch, according to claim 1, characterised in that the lead (4) connecting between the electrode (2) and the gold plated surface (9) is a gold wire.

3. An LN Q-switch according to claim 2, characterised in that said pole (2) is provided with screw holes (5) for screws to pass through to fix the pole (2) to the pole mounting plate (7).

4. An LN Q-switch according to any of claims 1-3, characterised in that the material of the said electrode (2) is copper.

5. An LN Q-switched switch according to claim 1, characterised in that said gold plated surface (9) is a chromium based gold layer.

6. An LN Q-switch according to claim 1, characterised in that the non-gold plated surface (8) of the LN crystal (3) is glued to the inner wall of the switch body (1).