BBO crystal mounting device

Abstract

The utility model provides a BBO crystal mounting device, and relates to the technical field of optical instruments. The BBO crystal mounting device comprises a mounting base, an adjusting assembly and a crystal bin. The mounting base is used for being connected with a BBO crystal using device, and the adjusting assembly is arranged on the mounting base. The crystal bin comprises a crystal holder, a BBO crystal and a heating film; the crystal seat is connected with the adjusting assembly, the BBO crystal and the heating film are arranged on the crystal seat, and the heating film is used for heating the BBO crystal. The heating film is arranged on the crystal holder, so that the BBO crystal is heated, and the temperature of the BBO crystal is controlled. When the temperature of the BBO crystal changes or is not uniform due to the heat effect generated when pump light or fundamental frequency light enters the crystal, the temperature of the BBO crystal is controlled through the heating film, the refractive index of the crystal is prevented from changing, the phase matching condition is kept unchanged, and the output angle and conversion efficiency of frequency doubling light are kept constant. And the working stability of the BBO crystal using device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to optical instrument technical field, especially is a kind of BBO crystal mounting device. BACKGROUND

[0002] BBO crystal is a nonlinear crystal with obvious comprehensive advantages, which is often used as laser frequency doubling crystal of all-solid-state laser due to its high optical damage threshold, wide band temperature matching and excellent optical uniformity.

[0003] In the prior art, when BBO crystal is used as laser frequency doubling crystal, the thermal effect generated after pump light or fundamental light is incident on the crystal will cause temperature change or temperature non-uniformity, change the refractive index, change the phase matching condition, thereby affecting the angle and conversion efficiency of frequency-doubled light output, resulting in unstable operation of all-solid-state laser. SUMMARY

[0004] The content part of the utility model is used to introduce the conception in brief form, which will be described in detail in the specific embodiment part. The content part of the present disclosure is not intended to identify the key features or essential features of the claimed technical solution, nor is it intended to limit the scope of the claimed technical solution.

[0005] The utility model provides a kind of BBO crystal mounting device, to solve the technical problem mentioned in above background technique part.

[0006] The BBO crystal mounting device of the utility model, comprising:

[0007] mounting seat, for connecting with BBO crystal using device;

[0008] adjusting assembly, is set to the mounting seat;

[0009] crystal warehouse, including crystal seat, BBO crystal and heating film;The crystal seat is connected with the adjusting assembly, the BBO crystal and the heating film are all set to the crystal seat, and the heating film is used to heat the BBO crystal.

[0010] Optionally, the side of the crystal seat away from the adjusting assembly is provided with a sandwich layer, and the heating film is arranged in the sandwich layer.

[0011] Optionally, the crystal warehouse further comprises:

[0012] first screw, the first screw is arranged in the sandwich layer from the bottom of the crystal seat, to fix the heating film.

[0013] Optionally, the crystal seat is further provided with a mounting groove, and the BBO crystal is arranged in the mounting groove.

[0014] Optionally, the crystal holder further comprises:

[0015] a crystal block, the crystal block is arranged in the mounting groove, and the crystal block is used for fixing the BBO crystal.

[0016] Optionally, the crystal block has a notch, the notch is in a shape adapted to the BBO crystal, and a side wall of the notch is in abutment with the BBO crystal.

[0017] Optionally, the crystal holder further comprises:

[0018] a second screw, the crystal block is fixed to the mounting groove through the second screw.

[0019] Optionally, the crystal holder further comprises:

[0020] a temperature sensor, the temperature sensor passes through the crystal base and extends into the crystal block, and the temperature sensor is used for measuring the temperature of the crystal block.

[0021] Optionally, the crystal holder further comprises:

[0022] a heat insulation cover, the heat insulation cover covers the crystal base, and the heat insulation cover is provided with a light transmission hole at a position corresponding to the light transmission surface of the BBO crystal.

[0023] Optionally, the crystal holder further comprises:

[0024] a third screw, the crystal base is fixed to the adjusting assembly through the third screw, and a heat insulation film is arranged between the crystal base and the adjusting assembly.

[0025] The BBO crystal mounting device of some embodiments of the utility model has the following beneficial effects: the BBO crystal mounting device of some embodiments of the utility model is provided with a heating film on the crystal base, so that the BBO crystal can be heated, and the temperature control of the BBO crystal is realized. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the specific embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0027] Figure 1 The structure diagram of the BBO crystal mounting device of the embodiment of the present application is shown in the figure.

[0028] Figure 2 The structure diagram of the BBO crystal mounting device of the embodiment of the present application is shown in the figure.

[0029] Figure 3 The structure diagram of the BBO crystal mounting device of the embodiment of the present application is shown in the figure.

[0030] Explanation of the reference signs:

[0031] 1: mounting seat;

[0032] 2: adjusting assembly; 201: adjusting plate; 202: first adjusting screw; 203: second adjusting screw; 204: third adjusting screw;

[0033] 3: crystal warehouse; 301: crystal seat; 302: crystal pressing block; 303: temperature sensor; 304: heat shield; 305: heating film; 306: BBO crystal; 307: third screw; 308: second screw; 309: first screw; 310: fourth screw; 311: heat insulation film. Specific embodiments

[0034] The technical solutions of the present application will be described below in conjunction with the embodiments. Obviously, the described embodiments are some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of the present application.

[0035] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0036] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise specifically limited. In addition, the terms "mounting", "connection", "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0037] The present disclosure will be described in detail below with reference to the drawings and in conjunction with embodiments.

[0038] Figure 1 The structure schematic view of the BBO crystal mounting device of the utility model embodiment, Figure 2 The structure schematic view of the BBO crystal mounting device of the utility model embodiment, Figure 1 And Figure 2 As shown in the drawings, the present application provides a BBO crystal mounting device, which comprises a mounting seat 1, an adjusting assembly 2 and a crystal bin 3. The mounting seat 1 is used for connecting with the BBO crystal using device, and the adjusting assembly 2 is arranged on the mounting seat 1. The crystal bin 3 comprises a crystal seat 301, a BBO crystal 306 and a heating film 305; the crystal seat 301 is connected with the adjusting assembly 2, and the BBO crystal 306 and the heating film 305 are arranged on the crystal seat 301, and the heating film 305 is used for heating the BBO crystal 306.

[0039] The utility model discloses a BBO crystal installation device, through setting up heating film 305 on crystal seat 301, in order to heat BBO crystal 306, realize the temperature control of BBO crystal 306.

[0040] It should be noted that the BBO crystal using device can be a solid-state laser.

[0041] In the embodiment of the application, the crystal seat 301 is provided with a sandwich away from one side of the adjusting assembly 2, and the heating film 305 is arranged in the sandwich. By arranging the heating film 305 in the sandwich, the heating film 305 is fixed, the structure of the crystal bin 3 is simplified, the contact area of the heating film 305 and the crystal seat 301 is increased, the heating film 305 is heated to the crystal seat 301, the heat is transmitted from the crystal seat 301 to the BBO crystal 306, and the temperature control of the BBO crystal 306 is facilitated. The heating film 305 can be an FPC electric heating film (polyimide heater), a silica gel electric heating film (silica gel heater) and a PET electric heating film (polyester heater).

[0042] In the embodiment of the application, the crystal bin 3 further comprises a first screw 309, and the first screw 309 is arranged in the sandwich from the bottom of the crystal seat 301 to fix the heating film 305. The heating film 305 is fixed by the first screw 309, so as to avoid the heating film 305 from being taken out of the opening of the sandwich.

[0043] In the embodiment of the application, the crystal seat 301 is further provided with a mounting groove, and the BBO crystal 306 is arranged in the mounting groove. The BBO crystal 306 is fixed by arranging the BBO crystal 306 in the mounting groove, and the structure of the crystal bin 3 is simplified.

[0044] In the embodiment of the application, the crystal bin 3 further comprises a crystal pressing block 302, the crystal pressing block 302 is arranged in the mounting groove, and the crystal pressing block 302 is used for fixing the BBO crystal 306. The crystal pressing block 302 in the mounting groove abuts against the BBO crystal 306, so as to fix the BBO crystal 306.

[0045] In the embodiment of the present application, the crystal block 302 has a notch, the shape of the notch is adapted to the BBO crystal 306, so that the side wall of the notch is in abutment with the BBO crystal 306. For example, when the BBO crystal 306 is a cube, the shape of the notch is also square. The square notch has two side walls, one side wall is in abutment with the horizontal surface of the BBO crystal 306, limiting the horizontal movement of the BBO crystal 306, and the other side wall is in abutment with the vertical surface of the BBO crystal 306, limiting the vertical movement of the BBO crystal 306. The material of the crystal holder 301 and the crystal block 302 can be red copper.

[0046] In the embodiment of the present application, the crystal bin 3 further comprises a second screw 308, and the crystal block 302 is fixed to the mounting groove through the second screw 308. By arranging the second screw 308, the crystal block 302 and the crystal holder 301 are detachably connected, so that the BBO crystal 306 is convenient to replace.

[0047] In the embodiment of the present application, the crystal bin 3 further comprises a temperature sensor 303, the temperature sensor 303 penetrates through the crystal holder and extends into the crystal block 302, and the temperature sensor 303 is used for measuring the temperature of the crystal block 302. Since the temperature of the crystal block 302 is the same as that of the BBO crystal 306, the temperature of the BBO crystal 306 can be measured through the temperature sensor 303. The control assembly is arranged on the crystal holder 301 and is electrically connected with the heating film 305 and the temperature sensor 303. The control assembly can be a temperature control feedback circuit, which controls the heating film 305 to work according to the detection result of the temperature sensor 303, so as to realize temperature control of the BBO crystal 306, avoid change of the crystal refractive index, keep the phase matching condition unchanged, keep the angle and conversion efficiency of the frequency-doubled light output constant, and improve the stability of the BBO crystal using device.

[0048] In the embodiment of the present application, the crystal bin 3 further comprises a heat shield 304, the heat shield 304 covers the crystal holder 301, and the heat shield 304 is provided with a light transmission hole corresponding to the position of the light transmission surface of the BBO crystal 306. By arranging the heat shield 304, the crystal holder 301 is isolated from the external environment, so as to avoid temperature change or non-uniformity of the BBO crystal 306 caused by the external environment, and further improve the stability of the BBO crystal using device. The material of the heat shield 304 can be ceramic fiber. External light is transmitted into the BBO crystal 306 through the light transmission hole, so that the BBO crystal using device works.

[0049] In the embodiment of the present application, the heat shield 304 is fixed to the adjusting assembly 2 through a fourth screw 310.

[0050] In the embodiment of the present application, the crystal bin 3 further comprises a third screw 307, the crystal seat 301 is fixed to the adjusting assembly 2 through the third screw 307, and a heat insulation film 311 is arranged between the crystal seat 301 and the adjusting assembly 2. By arranging the heat insulation film 311 between the crystal seat 301 and the adjusting assembly 2, heat conduction between the adjusting assembly 2 and the crystal seat 301 is avoided, that is, heat conduction between the adjusting assembly 2 and the BBO crystal 306 is avoided, and the stability of the BBO crystal using device in operation is further improved.

[0051] In the embodiment of the present application, the adjusting assembly 2 comprises an adjusting plate 201 and adjusting screws. The adjusting plate 201 is connected to the mounting seat 1 through the adjusting screws, and the adjusting plate 201 is further connected to the crystal seat 301. The adjusting assembly 2 changes the position of the crystal seat 301 through the adjusting screws, changes the angle of the BBO crystal 306, and fixes the position points of the threads of the adjusting screws after the light output condition is stabilized, so that the overall structure is simple, practical and easy to integrate.

[0052] The BBO crystal 306 needs to meet the phase matching condition during installation, and the angle thereof needs to be adjusted. In the prior art, in order to ensure stability and shock resistance, the angle of the BBO crystal 306 is finely adjusted through screws and elastic washers, or the BBO crystal 306 is directly pressed and held, and then the angle of incident light is adjusted. Since the elastic material does not have good shock resistance, the angle of incident light needs to be adjusted with higher accuracy, and it is difficult to apply to the whole machine or a mobile device. The adjusting assembly 2 of the embodiment of the present application can finely adjust the angle of the BBO crystal 306, prevent the BBO crystal 306 from vibrating, and enable the BBO crystal 306 to be applied to the whole machine or a mobile device.

[0053] Figure 3 A three-dimensional structural schematic view of the BBO crystal mounting device of the embodiment of the present application is shown in FIG. 1. Figure 3 As shown in FIG. 1, the adjusting screws comprise a first adjusting screw 202, a second adjusting screw 203 and a third adjusting screw 204. When the angle of the BBO crystal 306 needs to be finely adjusted, the first adjusting screw 202, the second adjusting screw 203 and the third adjusting screw 204 are respectively rotated, so that the vertical distance between different regions of the adjusting plate 201 and the mounting seat 1 changes, the adjusting plate 201 is inclined relative to the horizontal plane, and an inclination angle is formed. Since the adjusting plate 201 is further connected to the crystal seat 301, the crystal seat 301 and the BBO crystal 306 are inclined together with the adjusting plate 201, and the angle of the BBO crystal 306 is finely adjusted. Therefore, the BBO crystal mounting device provided by the present application can finely adjust the angle of the BBO crystal 306, finely control the temperature, and prevent the BBO crystal 306 from vibrating.

[0054] Finally, it should be noted that: the above embodiments are used to illustrate the technical solutions of the present application, but not limited to them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A BBO crystal mounting device, characterized by, The utility model relates to a BBO crystal adjusting device, including: Mounting seat (1) for connecting with BBO crystal using device, Adjusting assembly (2) is arranged in mounting seat (1), Crystal bin (3) including crystal seat (301), BBO crystal (306) and heating film (305), crystal seat (301) is connected with adjusting assembly (2), BBO crystal (306) and heating film (305) are all arranged in crystal seat (301), and heating film (305) is used to heat BBO crystal (306).

2. The BBO crystal mounting device of claim 1, wherein The side away from adjusting assembly (2) of crystal seat (301) is provided with interlayer, and heating film (305) is arranged in interlayer.

3. The BBO crystal mounting apparatus according to claim 2, characterized by Crystal bin (3) further includes: First screw (309) is set up in interlayer from the bottom of crystal seat (301) to fix heating film (305).

4. The BBO crystal mounting device of claim 1, wherein, Crystal seat (301) is further provided with mounting groove, and BBO crystal (306) is arranged in mounting groove.

5. The BBO crystal mounting apparatus according to claim 4, wherein Crystal bin (303) further includes: Crystal pressing block (302) is arranged in mounting groove, and crystal pressing block (302) is used to fix BBO crystal (306).

6. The BBO crystal mounting apparatus according to claim 5, wherein Crystal pressing block (302) has notch, and the shape of notch is adapted to BBO crystal (306), so that the side wall of notch is in abutment with BBO crystal (306).

7. The BBO crystal mounting apparatus according to claim 6, wherein Crystal bin (3) further includes: Second screw (308) is used to fix crystal pressing block (302) in mounting groove.

8. The BBO crystal mounting apparatus according to claim 7, wherein Crystal bin (3) further includes: Temperature sensor (303) passes through crystal base and extends into crystal pressing block (302), and temperature sensor (303) is used to measure the temperature of crystal pressing block (302).

9. The BBO crystal mounting apparatus according to any one of claims 1 to 8, characterized by Crystal bin (3) further includes: Heat shield (304) covers crystal seat (301), and heat shield (304) is provided with light transmission hole in the position corresponding to the light transmission surface of BBO crystal (306).

10. The BBO crystal mounting apparatus according to any one of claims 1 to 8, characterized by Crystal bin (3) further includes: Third screw (307) is used to fix crystal seat (301) in adjusting assembly (2), and heat insulation film (311) is arranged between crystal seat (301) and adjusting assembly (2).

Images