CN204290014U

CN204290014U - A kind of laser nonlinear optical crystal device for precisely regulating

Info

Publication number: CN204290014U
Application number: CN201420835280.3U
Authority: CN
Inventors: 马亮; 陈坚; 吴周令
Original assignee: HEFEI ZHICHANG PHOTOELECTRIC TECHNOLOGY CO LTD
Current assignee: HEFEI ZHICHANG PHOTOELECTRIC TECHNOLOGY CO LTD
Priority date: 2014-12-25
Filing date: 2014-12-25
Publication date: 2015-04-22
Anticipated expiration: 2024-12-25

Abstract

The utility model provides a kind of laser nonlinear optical crystal device for precisely regulating, comprise pitch regulation fixture and orientation adjusting base, pitch regulation fixture offers the groove for placing nonlinear optical crystal, orientation adjusting base offers the pitch regulation groove for placing pitch regulation fixture, the upper plane of pitch regulation fixture is higher than the upper plane of pitch regulation groove, and pitch regulation fixture and pitch regulation groove are rotatably assorted; Orientation adjusting base also offers pitch regulation screw and orientation adjustment arc-shaped slot, pitch regulation fixture and orientation adjusting base are by being arranged on the pitch regulation screw lock in pitch regulation screw, and orientation adjusting base regulates the orientation adjustment screw in arc-shaped slot fixing in the laser by being arranged on orientation.The utility model has can simplify laser regulating step, improves the stability of packaging efficiency and laser.

Description

A kind of laser nonlinear optical crystal device for precisely regulating

Technical field

The utility model relates to optics and field of laser device technology, specifically a kind of laser nonlinear optical crystal device for precisely regulating.

Background technology

The appearance of laser is one of most important discovery of twentieth century, laser is subject to the attention of each side with the directivity of its height, coherence and high brightness and obtains rapidly application, especially obtains a wide range of applications in machining, material heat treatment, synthesis and micro Process, laser ranging etc.Laser, since appearance, has become most important and state-of-the-art instrument in industrial production.

The heat management of solid state laser, the collimation of nonlinear optical crystal and fixing be the developing difficult point of solid state laser always.Nonlinear optical crystal in laser can not convert frequency doubled light completely to and launch after absorption fundamental frequency light energy, some thermal losses total is in nonlinear optical crystal, this just causes nonlinear optical crystal temperature to raise, produce the effect such as thermal lens and thermally induced diffractive losses, the light light conversion efficiency of nonlinear optical crystal is made to become lower, affect power output and the beam quality of laser, even make nonlinear optical crystal damage, cause unnecessary economic loss.

Nonlinear optical crystal is necessary precise alignment in laser optical path, and small skew all can affect frequency-doubling conversion efficiency.Nonlinear optical crystal fixture structure conventional is at present complicated, usually needs to carry out auxiliary adjustment by other precision equipment.Market not yet occurs a kind of structure is simple and the heat radiation of nonlinear optical crystal and the adjustment of collimation two aspect problems and fixture can be taken into account simultaneously.Therefore, in individual laser package production process, find a kind of easy adjustment and structure simple nonlinear optical crystal device for precisely regulating to raising laser quality and production efficiency be very necessary.

Utility model content

The purpose of this utility model is to provide a kind of laser nonlinear optical crystal device for precisely regulating, while solution nonlinear optical crystal collimation adjustment problem, take into account its heat dissipation problem, have easy to operate, precision is high, structure is simple, be easy to the advantages such as batch production.

The technical solution of the utility model is:

A kind of laser nonlinear optical crystal device for precisely regulating, this device comprises pitch regulation fixture and orientation adjusting base, described pitch regulation fixture offers the groove for fixing nonlinear optical crystal, described orientation adjusting base offers the pitch regulation groove for placing pitch regulation fixture, the upper plane of described pitch regulation fixture is higher than the upper plane of pitch regulation groove, and described pitch regulation fixture and pitch regulation groove are rotatably assorted;

Described orientation adjusting base also offers pitch regulation screw and orientation adjustment arc-shaped slot, described pitch regulation fixture and orientation adjusting base are by being arranged on the pitch regulation screw lock in pitch regulation screw, and described orientation adjusting base regulates the orientation adjustment screw in arc-shaped slot fixing in the laser by being arranged on orientation.

Described laser nonlinear optical crystal device for precisely regulating, described pitch regulation fixture is circular arc body structure, described groove is located on the rectangle plane of pitch regulation fixture, circular arc camber and the pitch regulation groove of described pitch regulation fixture are rotatably assorted, described pitch regulation groove is arc-shaped slot, and its radius of curvature is identical with the radius of curvature of the circular arc camber of pitch regulation fixture.

Described laser nonlinear optical crystal device for precisely regulating, described orientation adjusting base is convex body structure, described pitch regulation groove and pitch regulation screw are all located at the center vertical portion of orientation adjusting base, described pitch regulation screw has two, is located at diagonal angle, the both sides place of pitch regulation groove respectively; Described orientation regulates arc-shaped slot to have two, is located at the both ends horizontal portion of orientation adjusting base respectively.

Described laser nonlinear optical crystal device for precisely regulating, described nonlinear optical crystal is fixed in the groove on pitch regulation fixture by brazing metal.

Described laser nonlinear optical crystal device for precisely regulating, is provided with heat-conducting layer between described pitch regulation fixture and pitch regulation groove, and described heat-conducting layer adopts elargol or silicone grease to fill.

Described laser nonlinear optical crystal device for precisely regulating, described two orientation adjustment arc-shaped slot is the two parts on same annulus, and the center of circle of described annulus is positioned at the center position in the by-level portion of orientation adjusting base.

The beneficial effects of the utility model are:

1, the utility model device has the advantages such as structure is simple, cost is low, easy to operate, can simplify laser regulating step, improves packaging efficiency.

2, whole fixation procedure all has screw mechanical type locked, ensures that nonlinear optical crystal micro-displacement can not occur, improves the stability of laser;

3, nonlinear optical crystal can realize good heat radiation by whole device, has useful help to raising laser quality.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model;

Fig. 2 is pitch regulation clamp structure schematic diagram of the present utility model;

Fig. 3 is orientation of the present utility model adjusting base structural representation.

Embodiment

The utility model is further illustrated below in conjunction with the drawings and specific embodiments.

As shown in FIG. 1 to 3, a kind of laser nonlinear optical crystal device for precisely regulating, comprises pitch regulation fixture 1 and orientation adjusting base 2, and pitch regulation fixture 1 is circular arc body structure, and orientation adjusting base 2 is convex body structure.The rectangle plane of pitch regulation fixture 1 offers the groove 11 for fixing nonlinear optical crystal 3.The center vertical portion of orientation adjusting base 2 offers diagonal angle, the both sides place that pitch regulation groove 21 for placing pitch regulation fixture 1 and two pitch regulation screws, 22, two pitch regulation screws 22 are located at pitch regulation groove 21 respectively.The both ends horizontal portion of orientation adjusting base 2 respectively offers an orientation and regulates arc-shaped slot 23.

The material of pitch regulation fixture 1 and orientation adjusting base 2 is the metal that the thermal conductivity such as copper or aluminium is high.Pitch regulation groove 21 is arc-shaped slot, its radius of curvature is identical with the radius of curvature of the circular arc camber of pitch regulation fixture 1, to ensure that pitch regulation fixture 1 coordinates with the high accuracy of pitch regulation groove 21, pitch regulation fixture 1 freely can be rotated in pitch regulation groove 21, two-part contact-making surface adopts the elargol or silicone grease filling that thermal conductivity is higher, two parts resistance in relative rotation can be reduced on the one hand, the capacity of heat transmission between them can be strengthened on the other hand.

Nonlinear optical crystal 3 can be the crystal such as LBO, KTP, PPLN, by the mode of brazing metal, nonlinear optical crystal 3 is arranged in the groove 11 of pitch regulation fixture 1, be intended to reduce the thermal resistance between nonlinear optical crystal 3 and groove 11, improve the heat dispersion of nonlinear optical crystal 3.The shape of groove 11 is determined by the shape of nonlinear optical crystal 3, and can be rectangle, circle etc., the length of groove 11 is not shorter than the length of nonlinear optical crystal 3.

The upper plane of pitch regulation fixture 1 is higher than the upper plane of pitch regulation groove 21, after rotation pitch regulation fixture 1 makes the luffing angle of nonlinear optical crystal 3 regulate basic collimation, with pitch regulation screw 4 through pitch regulation screw 22, in both sides, pitch regulation fixture 1 is fixed on orientation adjusting base 2, by screwing and loosen the pitch regulation screw 4 of both sides, realize the pitch regulation to nonlinear optical crystal 3, thus reach the object of precise alignment.When both sides pitch regulation screw 4 to be all installed in pitch regulation screw 22 and to screw, namely pitch regulation fixture 1 and orientation adjusting base 2 are locked.

Two orientation adjustment arc-shaped slots 23 on orientation adjusting base 2 are the two parts on same annulus, and the center of circle of this annulus is positioned at the center position in the by-level portion of orientation adjusting base 2, orientation adjusting base 2 is horizontally rotated around this center, the left and right collimation of adjustable nonlinear optical crystal 3, after adjustment completes, regulate arc-shaped slot 23 by orientation adjustment screw through orientation, orientation adjusting base 2 is fixed in the laser.

Operation principle of the present utility model:

For lbo crystal, the elargol of lbo crystal bi-component is placed in groove 11, and heats 3 hours under 90 DEG C of conditions, be that lbo crystal is fixed in pitch regulation fixture 1 on the one hand, ensure its tightness; Be ensure that lbo crystal fully contacts with the groove 11 of pitch regulation fixture 1 on the other hand, the heat of lbo crystal inside is distributed soon.

First carrying out coarse adjustment, whole device is placed in the suitable position of laser optical path, driving lbo crystal to follow rotation by rotating pitch regulation fixture 1 along horizontal axis 0, realize lbo crystal pitching adjustment; Orientation, left and right rotational orientation adjusting base 2, realizes lbo crystal orientation adjustment again, ensures the center of laser optical path through lbo crystal.

After coarse adjustment completes, then carry out fine adjustment and fix.With pitch regulation screw 4, pitch regulation fixture 1 is fixed on orientation adjusting base 2, regulates the tightness of both sides pitch regulation screw 4 while fixing, fine tuning can be carried out to the pitching of lbo crystal, until two pitch regulation screws 4 all screw.Equally, orientation adjustment screw is regulated arc-shaped slot 23 through orientation, orientation adjusting base 2 is fixed in the laser.Whole adjustment process can be passed by journey at laser open and complete, and without the need to auxiliary equipment such as distinctive five dimension adjustment racks.

The above execution mode is only be described preferred implementation of the present utility model; not scope of the present utility model is limited; under the prerequisite not departing from the utility model design spirit; the various distortion that those of ordinary skill in the art make the technical solution of the utility model and improvement, all should fall in protection range that claims of the present utility model determine.

Claims

1. A laser nonlinear optical crystal precision adjustment device, characterized in that: the device includes a pitch adjustment fixture and an azimuth adjustment base, and the pitch adjustment fixture is provided with a groove for fixing the nonlinear optical crystal, and the azimuth adjustment A pitch adjustment slot for placing a pitch adjustment jig is provided on the base, the upper plane of the pitch adjustment jig is higher than the upper plane of the pitch adjustment slot, and the pitch adjustment jig is rotatably matched with the pitch adjustment slot;

The azimuth adjustment base is also provided with a pitch adjustment screw hole and an azimuth adjustment arc slot, the pitch adjustment fixture and the azimuth adjustment base are locked by the pitch adjustment screw installed in the pitch adjustment screw hole, and the azimuth adjustment base It is fixed in the laser by the azimuth adjustment screw installed in the azimuth adjustment arc slot.

2. The laser nonlinear optical crystal precision adjustment device according to claim 1, characterized in that: the pitch adjustment fixture is a circular arc body structure, the groove is arranged on the rectangular plane of the pitch adjustment fixture, and the pitch adjustment fixture The arc-shaped surface of the adjusting fixture rotates in cooperation with the pitch-adjusting groove, and the pitch-adjusting groove is an arc-shaped groove whose radius of curvature is the same as that of the arc-shaped surface of the pitch-adjusting fixture.

3. The laser nonlinear optical crystal precision adjustment device according to claim 1, characterized in that: the azimuth adjustment base is a convex body structure, and the pitch adjustment groove and the pitch adjustment screw hole are both arranged on the azimuth adjustment base. In the middle vertical part, there are two pitch adjustment screw holes, which are respectively arranged at the opposite corners on both sides of the pitch adjustment groove; there are two azimuth adjustment arc-shaped slot holes, which are respectively arranged at the two ends of the azimuth adjustment base. department.

4. The laser nonlinear optical crystal precision adjustment device according to claim 1, characterized in that: the nonlinear optical crystal is fixed in the groove on the pitch adjustment fixture by metal solder.

5. The laser nonlinear optical crystal precision adjustment device according to claim 1 or 2, characterized in that: a heat conduction layer is provided between the pitch adjustment fixture and the pitch adjustment groove, and the heat conduction layer is made of silver glue or silicone grease filling.

6. The laser nonlinear optical crystal precision adjustment device according to claim 3, characterized in that: the two azimuth adjustment arc-shaped slots are two parts on the same ring, and the center of the ring is located in the azimuth Adjust the center position of the middle level of the base.