CN212626501U - Laser transmitter - Google Patents

Abstract

The utility model discloses a laser transmitter, including the pumping source, the resonant cavity with hold the chamber, pumping source and resonant cavity are placed with parallel mode and are holding the intracavity, its characterized in that holds the chamber and controls both ends and be a fixed cover cladding respectively, holds the chamber and controls both ends and every fixed cover and respectively have two assorted through-holes, wherein two through-holes of one side are the access hole of pumping source negative pole cable and the cable access hole that the pumping source triggered utmost point, and two through-holes of one side are the access hole of the anodal cable of pumping source and the light outlet of resonant cavity in addition. The problems that air is broken down by high voltage attached to a high-voltage pumping source, electric leakage is caused, electronic equipment components are damaged and the like in the portable laser liquid sample collecting equipment are solved well, and the precision and the reliability of optical equipment are guaranteed.

Description

Laser transmitter

Technical Field

The utility model relates to a laser equipment field especially relates to a laser emitter.

Background

Laser emitters typically include components including a pump source, a resonant cavity, and a collection cavity. Taking a portable laser liquid sample collecting device as an example, the resonant cavity is generally a crystal bar, the pumping source is generally a high-voltage xenon lamp, the voltage attached to the high-voltage xenon lamp is often as high as thousands of volts or even tens of thousands of volts, and the portable laser liquid sample collecting device is very easy to puncture air, leak electricity and damage electronic equipment components, so that the whole laser transmitter fails.

Disclosure of Invention

The utility model provides a pair of laser emitter, solution that can be better can solve EMC interference problem betterly simultaneously because the subsidiary high voltage breakdown air of high-pressure pumping source, cause the electric leakage, damage electronic equipment components and parts scheduling problem.

The embodiment of the utility model provides a laser transmitter, which comprises a pumping source, a resonant cavity and a containing cavity, wherein the pumping source and the resonant cavity are arranged in the containing cavity in a parallel way,

it is characterized in that the preparation method is characterized in that,

the left end and the right end of the containing cavity are respectively covered by a fixed cover,

the left end and the right end of the containing cavity and each fixed cover are respectively provided with two matched through holes,

the two through holes on one side are an access hole of the pump source cathode cable and a cable access hole of the pump source trigger electrode, and the two through holes on the other side are an access hole of the pump source anode cable and a light outlet hole of the resonant cavity.

The embodiment of the utility model provides a laser emitter, the negative pole ground connection of pumping source, and the pumping source triggers the high pressure of utmost point and is the burden sometimes for just, consequently trigger the voltage difference between utmost point and the negative pole and be greater than the voltage difference between trigger utmost point and the positive pole, and such design can suitably reduce the voltage difference, thereby reduce high-voltage breakdown, the appearance of electric leakage scheduling problem, because the subsidiary high-voltage breakdown air of high-pressure pumping source in the portable laser liquid appearance collecting device of better solution, cause the electric leakage, damage electronic equipment components and parts scheduling problem, optical equipment's precision and reliability have been guaranteed.

Drawings

Fig. 1 is a sectional view of a main structure of a laser transmitter provided by an embodiment of the present invention;

wherein the reference numerals indicate respectively: 1 is the pumping source, 2 is the resonant cavity, 3 is the chamber of holding, 4 is the fixed cover of one side, 5 is the fixed cover of opposite side, 6 is the cable access hole of pumping source negative pole, 7 is the cable access hole of pumping source trigger pole, 8 is the cable access hole of pumping source positive pole, 9 is the light exit hole of resonant cavity.

Fig. 2 is a schematic full-section view of a laser transmitter housing provided in an embodiment of the present invention;

wherein the reference numerals indicate respectively: 4 is a fixing cover on one side, 5 is a fixing cover on the other side, 10 is an end fixing component on one side, 11 is an end fixing component on the other side, and 12 is a metal cavity, wherein the end fixing component 10, the end fixing component 11 and the metal cavity 12 can form a complete containing cavity in fig. 1.

Fig. 3 is a schematic view of a screw fixing structure of a laser transmitter housing according to an embodiment of the present invention;

wherein the reference numerals indicate respectively: 3 is the accommodating cavity, 4 is the fixed cover on one side, and 5 is the fixed cover on the other side.

Fig. 4 is a schematic view of the screw fastening of the housing according to the embodiment of the present invention;

wherein the reference numerals indicate respectively: 3 is the accommodating cavity, 4 is the fixed cover on one side, and 5 is the fixed cover on the other side.

Fig. 5 is a schematic diagram of an arrangement of access holes provided by an embodiment of the present invention;

wherein the reference numerals indicate respectively: 1 is a pumping source, 4 is a fixed cover on one side, 5 is a fixed cover on the other side, 6 is a cable access hole of a negative electrode of the pumping source, 7 is a cable access hole of a trigger electrode of the pumping source, 9 is a light outlet hole of a resonant cavity, 10 is an end fixing part on one side, and 11 is an end fixing part on the other side.

Fig. 6 is a schematic view of an axial rotation prevention structure provided by an embodiment of the present invention.

Fig. 7 is a schematic structural view of an intermediate chamber provided in an embodiment of the present invention;

wherein the reference numerals indicate respectively: the cavity 12 made of metal is a light-condensing cavity 13.

Fig. 8 is a transverse full-section view of a metal cavity according to an embodiment of the present invention.

Fig. 9 is a schematic view of an overall appearance of a cavity made of metal according to an embodiment of the present invention.

Fig. 10 is a longitudinal full sectional view of a metal cavity according to an embodiment of the present invention.

Fig. 11 is a schematic view of an overall appearance of a cavity made of metal according to an embodiment of the present invention.

Fig. 12 is an exploded view of an end fixing structure according to an embodiment of the present invention.

Fig. 13 is a full sectional view of an end fixing structure provided in an embodiment of the present invention; wherein the reference numerals indicate respectively: 4 is a fixing cover, 11 is a terminal fixing piece.

Detailed Description

The high-voltage equipment in the laser easily causes the electric leakage problem, the resonant cavity is generally a crystal bar, the pumping source is generally a high-voltage xenon lamp, and the working voltage of the high-voltage xenon lamp is often as high as thousands of volts or even tens of thousands of volts. Because the portable equipment is small in size and all components are compact in layout (the whole equipment is only palm-sized), high voltage on a xenon lamp in the equipment is easy to puncture air and leak electricity and damage peripheral electronic equipment components, so that the whole laser transmitter fails.

Taking a portable laser liquid sample collecting device as an example, cables such as an anode, a cathode and a trigger electrode are required to be led out from an internal pumping source, wherein the cathode is grounded, the voltage of the anode is 200 to 300 volts, but the voltage of the trigger electrode is extremely high and can reach 6000 to 12000 volts, various circuit boards outside a laser emitter are also grounded frequently, when outer cavities wrapping parts such as the internal pumping source, a resonant cavity, a light-gathering cavity and the like are made of metal materials, an electrical gap, a creepage distance or an insulation penetration distance are greatly reduced due to the metal materials, air and electric leakage are easy to break through, electronic equipment components are damaged, and the whole laser emitter is caused to fail.

Therefore, the following technical solutions are proposed, and in order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and the detailed description.

As shown in fig. 1, the present invention is a laser transmitter, which comprises a pump source, a resonant cavity and a containing cavity, wherein the pump source and the resonant cavity are arranged in the containing cavity in a parallel manner,

it is characterized in that the preparation method is characterized in that,

the left end and the right end of the containing cavity are respectively covered by a fixed cover,

the left end and the right end of the containing cavity and each fixed cover are respectively provided with two matched through holes,

the two through holes on one side are an access hole of the pump source cathode cable and a cable access hole of the pump source trigger electrode, and the two through holes on the other side are an access hole of the pump source anode cable and a light outlet hole of the resonant cavity.

The negative electrode of the pumping source is grounded, the high voltage of the triggering electrode of the pumping source is positive and negative sometimes, so that the voltage difference between the triggering electrode and the negative electrode is larger than the voltage difference between the triggering electrode and the positive electrode, the voltage difference can be properly reduced by the design, the problems of high voltage breakdown, electric leakage and the like are reduced, the problems of air breakdown, electric leakage, damage to electronic equipment components and the like caused by the high voltage attached to the high-voltage pumping source in the portable laser liquid sample collecting equipment are well solved, and the precision and the reliability of the optical equipment are guaranteed.

In addition, the triggering filament is wrapped by the heat shrink tube made of the insulating material, so that the problems of high-voltage breakdown, electric leakage and the like are further reduced.

In electronic devices and electronic products, electromagnetic interference energy is transmitted through conductive coupling and radiative coupling. The radiation coupling is suppressed by shielding. Meanwhile, the electromagnetic spectrum is becoming more dense, the electromagnetic power density in a unit volume is sharply increased, a large number of high-low level devices or equipment are used in a mixed manner, the electromagnetic environment of the equipment and the system is becoming worse, and the importance of electromagnetic shielding is more prominent under the condition.

To this end, further referring to fig. 2, as an embodiment of the laser transmitter provided by the present invention, the laser transmitter,

it is characterized in that the left end and the right end of the containing cavity are respectively provided with an end fixing part made of insulating high-temperature resistant material, the middle of the containing cavity is provided with a cavity body made of metal material, fixing covers outside the left end and the right end of the containing cavity are made of insulating material which is easy to process,

the two fixing covers are provided with matched connecting parts, so that the two fixing covers fix the metal cavity between the two end fixing parts through the two end fixing parts.

The conductive metal can reflect, absorb and counteract electromagnetic waves. Thereby achieving the purpose of reducing the electromagnetic wave radiation. When the frequency of the interference electromagnetic field is higher, the eddy current generated in the metal material with low resistivity is utilized to form the counteraction effect on the electromagnetic wave, thereby achieving the shielding effect.

The radiation source is divided into an electric field source in a near region, a magnetic field source and a plane wave in a far region, so that the shielding performance of the shielding body is different in material selection, structural shape, pore gap leakage control and the like according to different radiation sources. In the design, to achieve the required shielding performance, a radiation source needs to be determined first, a frequency range is defined, control elements are determined according to typical leakage structures of various frequency bands, and then a proper shielding material is selected to design a shielding shell.

Through careful design, we have selected the Al6061 aluminum product as the material of the cavity of metal material for use, and the length of the cavity of metal material is greater than the radial more than 1.5 times of inner wall of the cavity of metal material, and the cavity of metal material is generally circular or oval cavity body, and the smooth inner wall surface can be better produces the reflex action to the electromagnetic wave, and electromagnetic shielding effect is better.

When the spotlight chamber body was the metal material (promptly the cavity of metal material and spotlight chamber fuse into an organic whole), although the structure is simple relatively, the aluminum product is not high enough to the light reflectivity that the pumping source produced, has influenced laser emitter's wholeness ability, and directly chooses for use the material of the higher metal gold of reflectivity or silver, then the cost is too expensive.

And more important reason is, because the utility model relates to a laser emitter, its inside pumping source has the positive pole, cables such as negative pole and trigger utmost point need be drawn forth, wherein negative pole ground connection, positive voltage is 200 to 300 volts, but trigger utmost point voltage is high, can reach 6000 to 12000 volts, and often also have ground connection on the outer various circuit boards of laser emitter, when the inside pumping source of parcel, the exocoel of spare parts such as resonant cavity and spotlight chamber uses metal material, very easily lead to electric clearance, creepage distance or insulating breakthrough distance reduces because of metal material greatly, very easily puncture the air, electric leakage and damage electronic equipment components and parts, cause whole laser emitter to become invalid.

When the light-gathering cavity body is made of metal (namely, the cavity made of metal is integrated with the light-gathering cavity), an internal pumping source of the light-gathering cavity body is a high-voltage device, air is punctured by internal high voltage, the light-gathering cavity made of metal is easy to lead out the high voltage, and more serious consequences such as electric leakage and even short circuit damage of the device are caused.

When the light-gathering cavity is embedded in the cavity made of metal materials, internal high voltage cannot be smoothly led out, and good EMC performance is guaranteed.

And due to the mentioned high-voltage leakage, the cable inlet and outlet of the pumping source is positioned on the end fixing part, and the cable inlet and outlet is not contacted with the cavity made of the metal material. The distance between the cable made of the metal material and the metal cavity is increased, so that the problem of electric leakage caused by high voltage can be effectively solved.

The end fixing part is made of an insulating high-temperature-resistant material, and an alumina ceramic material is particularly selected, so that the end fixing part is easy to form and process, has good insulating property, has the room-temperature resistivity of 1015 omega-cm and the insulating strength of 15kV/mm, is insulated from a cavity made of a metal material, and can ensure that the electric leakage problem cannot occur.

And the end fixing part is made of opaque materials, so that the light energy in the laser transmitter cannot leak out, and the user experience is prevented from being influenced.

And because the utility model relates to a laser emitter, parts such as its inside pumping source, resonant cavity and spotlight chamber need good fixed, could guarantee certain optical property. And the pumping source and the resonant cavity in the device are generally long rod-shaped, two end fixing parts are used for fixing two ends of the pumping source and the resonant cavity at the same time, so that the pumping source and the resonant cavity can be fixedly arranged in a parallel mode, and the photoelectric conversion efficiency is high.

And two end fixing parts are fixed into a whole through a connecting part at two ends, and all parts contained in the laser transmitter are fixed into a whole, so that the laser transmitter can be used as a complete module unit after being installed, and the laser transmitter is conveniently applied to various scenes.

Furthermore, the two end connecting parts are two end fixing parts, the outer walls of which are respectively coated by a fixing cover, and the two fixing covers are connected together through the two end connecting parts.

Wherein the fixed cover does not contact the cavity made of metal material.

Here fixed cover should be workable insulating material (like plastics material or rubber material), this is because end fixed part chooses for use insulating high temperature resistant material (for example pottery), but insulating high temperature resistant material often the shaping technology is complicated and the raw materials cost is higher, and the plastics material is then easy shaping processing, both ends adapting unit utilizes the plastics material be convenient for process and have certain elasticity, can be better with the end fixed part phase-match of irregular shape, and be in the same place two end fixed part fixed connection, thereby all fixed as an organic whole with the various spare parts that laser emitter contains, make the laser emitter install the back of accomplishing, can regard as a complete modular unit, convenient all kinds of scenes of being applied to.

In addition, because the machine-shaping is convenient, can also place other spare parts between fixed cover and the end fixed part (for example inside can hold optical components such as ceramic spotlight chamber and focusing lens) to simplify more complicated device system into a module, thereby be more convenient for be applied to all kinds of scenes.

Besides, in order to insulate the metal cavity, the fixing cover should be made of an insulating material, and the connecting parts at the two ends should also be made of an insulating material.

Further, referring to fig. 3 and 4, as an embodiment of the laser transmitter provided by the present invention, the laser transmitter,

it is characterized in that the preparation method is characterized in that,

the connecting part is as follows:

each fixed cover is provided with two or more through holes, and the two fixed covers are fixedly connected through a screw rod penetrating through the through holes; or each fixing cover is provided with two or more through holes, the outer wall of the containing cavity is provided with radiating fins, the grooves of the fins are provided with threads corresponding to the through holes, and each fixing cover is fixed on the containing cavity through screws.

When the heat dissipation fins are arranged on the outer wall of the accommodating cavity in the two modes, the structure of the fins can also block the rotation of the cavity made of the metal material besides the friction force between the end fixing part and the cavity made of the metal material, so that the integral fixation of the whole system is ensured.

Because the heat resistance of the easy-to-process insulating material (such as plastic material) is often not good, the fixed cover does not contact the cavity made of metal material in structural design.

Further, referring to fig. 5, as an embodiment of the laser transmitter provided by the present invention, the laser transmitter,

it is characterized in that the preparation method is characterized in that,

the cable access hole of the negative pole of the pump source is positioned in the axial direction of the pump source,

the pumping source trigger electrode is located in the radial direction of the pumping source at the outlet of the cable access hole in the end fixing part and the fixing cover, and the cable of the pumping source trigger electrode extends out of the cable access hole and then extends in the direction parallel to the cable of the negative electrode of the pumping source.

The distance between the circle center of the cable access hole outlet of the pump source trigger electrode and the circle center of the cable access hole outlet of the pump source cathode is larger than 3 mm.

And the cable inlet and outlet are not contacted with the cavity made of metal materials.

The design is mainly used for reducing the occurrence of high-voltage breakdown, electric leakage and the like by increasing the distance between the cables.

And the curvature of the cable of the trigger electrode at the folding angle is larger than 1mm, and the problems of high voltage breakdown, electric leakage and the like are reduced by reducing sharp parts.

Further, referring to fig. 6, as an embodiment of the laser transmitter provided by the present invention, the laser transmitter,

the anti-axial-rotation device is characterized in that an anti-axial-rotation structure is arranged outside one or two fixed covers. And the structure outside the laser emitter is matched, so that the laser emitter cannot axially rotate. The whole laser transmitter is fixed through the external structure, so that the whole axial rotation of the laser transmitter is prevented, and the precision of the whole light path is ensured. Wherein one or two fixed covers are provided with an anti-axial rotation structure, the structure is that two sides of a horizontal shaft are respectively provided with a toggle plate, and the toggle plates are matched with a horizontal plane structure outside the laser emitter to form a supporting surface, so that the laser emitter can not axially rotate, and the fixation is ensured up, down, left and right.

Further, referring to fig. 7, as an embodiment of the laser transmitter provided by the present invention, the laser transmitter,

the metal light-gathering lamp is characterized in that the metal cavity further comprises a light-gathering cavity, and the outer wall of the light-gathering cavity is in contact with the inner wall of the metal cavity.

And when the spotlight chamber inlays in the cavity of metal material, we adopt such scheme: the light-gathering cavity is a quartz tube, and a light-gathering reflection coating is plated on the outer surface of the quartz tube except the two end faces or the outer surface containing the two end faces, and the light-gathering reflection coating is divided into two layers and is sequentially arranged from inside to outside: a metal reflective film and a graphene coating. The metal reflecting film is a silver film, so that the reflectivity of the light-gathering cavity is improved and the energy utilization efficiency is improved; through graphite alkene coating for the firm attached to on quartz capsule surface of metal reflectance coating, and graphite alkene coating also has good heat conduction, is difficult for ageing, and such structure cost is less than the scheme that the spotlight chamber body is the metal material.

The metal reflecting film is a silver layer, the thickness of the silver layer is less than 500 mu m, and the film coating mode of the silver layer is barrel plating.

The quartz tube of the light-gathering cavity is made of strontium-doped quartz, the strontium doping rate is less than 0.1 per thousand, and the thickness of the quartz tube is less than 3 mm.

Further, referring to fig. 8 and 9, as an embodiment of the laser transmitter provided by the present invention, the laser transmitter,

it is characterized in that the preparation method is characterized in that,

the outer wall of the cavity made of metal is provided with fins.

The metal material of fin is aluminum material or copper material, and this design is favorable to the heat dissipation.

The cross section of the fin is in a smooth structure with a chamfer, as shown in fig. 8 and 9, the design reduces the occurrence of high voltage breakdown, electric leakage and other problems by increasing the electric gap, creepage distance and insulation penetration distance between the cable and the metal cavity, and the structural design can ensure that the fixing cover does not contact the metal cavity.

In addition, because the distribution of the thermal field in the cavity is not uniform, the temperature of the side close to the pumping source is higher, and the temperature of the side close to the resonant cavity is lower, so that the length of the outer wall fin close to the pumping source is longer, and the length of the outer wall fin close to the resonant cavity is shorter.

Further, referring to fig. 10 and 11, as an embodiment of the laser transmitter provided by the present invention,

the laser emitter is arranged on the base plate,

it is characterized in that the preparation method is characterized in that,

the longitudinal section of each fin on the outer wall of the cavity made of the metal material is in a smooth structure with a chamfer.

As shown in the figure, the design reduces the occurrence of high-voltage breakdown, electric leakage and the like by increasing the electric clearance, the creepage distance and the insulation penetration distance between the cable and the cavity made of the metal material.

Further, referring to fig. 12 and 13, as an embodiment of the laser transmitter provided by the present invention, the laser transmitter,

it is characterized in that the preparation method is characterized in that,

two concave cavities respectively matched with the pumping source and the end faces of the two ends of the resonant cavity are arranged in each end fixing part,

the inner cavity of the fixed cover is provided with an elastic structure which is matched with the curved surface of the shell of the end fixing part.

Furthermore, the elastic structure is an arc rib plate matched with the curved surface of the shell of the end fixing part as shown in the figure, so that the optical precision is guaranteed, the end fixing part is easy to form, and the end fixing part is fixed and plays a certain role in shock absorption.

Further, referring to fig. 2, as an embodiment of the laser transmitter provided by the present invention, the laser transmitter,

it is characterized in that the preparation method is characterized in that,

the two end fixing parts are respectively contacted with the two end surfaces of the light gathering cavity in a sealing mode.

Therefore, light and heat can be prevented from leaking out, and the performance of the machine and the user experience are influenced.

Wherein, further, please refer to fig. 2, as a specific embodiment of the laser transmitter provided by the present invention,

the laser emitter is arranged on the base plate,

it is characterized in that the preparation method is characterized in that,

the outer diameter of the end fixing part is larger than the inner diameter of the metal cavity and smaller than the outer diameter of the metal cavity;

the inner diameter of the fixed cover is larger than the inner diameter of the cavity made of metal and smaller than the outer diameter of the cavity made of metal.

By the design, the heat-resistant and insulating end fixing component is in sealing contact with the cavity made of the metal material, the fixing cover with low heat resistance is not in contact with the cavity made of the metal material, the fixing cover, the end fixing component and the light-gathering cavity inside the fixing cover are insulated and isolated, and the good performance of EMC is guaranteed by the cavity made of the metal material.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims (10)

1. A laser transmitter comprises a pumping source, a resonant cavity and a containing cavity, wherein the pumping source and the resonant cavity are arranged in the containing cavity in a parallel manner,

it is characterized in that the utility model is characterized in that,

the left end and the right end of the containing cavity are respectively covered by a fixed cover,

the left end and the right end of the containing cavity and each fixed cover are respectively provided with two matched through holes,

wherein, the two through holes on one side are an access hole of the pump source cathode cable and a cable access hole of the pump source trigger electrode,

and the two through holes on the other side are an access hole of the pumping source anode cable and an optical access hole of the resonant cavity.

2. The laser transmitter as claimed in claim 1,

it is characterized in that the utility model is characterized in that,

the left end and the right end of the accommodating cavity are respectively provided with an end fixing part made of insulating high-temperature resistant material, the middle of the accommodating cavity is provided with a cavity body made of metal material, fixing covers outside the left end and the right end of the accommodating cavity are made of easily processed insulating material,

the two fixing covers are provided with matched connecting parts, so that the two fixing covers fix the metal cavity between the two end fixing parts through the two end fixing parts.

3. The laser transmitter as claimed in claim 2,

it is characterized in that the utility model is characterized in that,

the connecting part is as follows:

each fixed cover is provided with two or more through holes, and the two fixed covers are fixedly connected through a screw rod penetrating through the through holes;

or each fixing cover is provided with two or more through holes, the outer wall of the containing cavity is provided with radiating fins, the grooves of the fins are provided with threads corresponding to the through holes, and each fixing cover is fixed on the containing cavity through screws.

4. The laser transmitter as claimed in claim 1,

it is characterized in that the utility model is characterized in that,

the cable access hole of the negative pole of the pump source is positioned in the axial direction of the pump source,

the pumping source trigger electrode is located in the radial direction of the pumping source at the outlet of the cable access hole in the end fixing part and the fixing cover, and the cable of the pumping source trigger electrode extends out of the cable access hole and then extends in the direction parallel to the cable of the negative electrode of the pumping source.

5. The laser transmitter as claimed in claim 1,

it is characterized in that the utility model is characterized in that,

and an axial rotation prevention structure is arranged outside one or two fixed covers.

6. The laser transmitter as claimed in claim 2,

it is characterized in that the utility model is characterized in that,

the metal material cavity interior still includes a spotlight chamber, and spotlight chamber outer wall and metal material's cavity inner wall contact.

7. The laser transmitter as claimed in claim 2,

it is characterized in that the utility model is characterized in that,

the outer wall of the cavity made of metal is provided with fins.

8. The laser transmitter as claimed in claim 7,

it is characterized in that the utility model is characterized in that,

the longitudinal section of each fin on the outer wall of the cavity made of the metal material is in a smooth structure with a chamfer.

9. The laser transmitter as claimed in claim 2,

it is characterized in that the utility model is characterized in that,

two concave cavities respectively matched with the pumping source and the end faces of the two ends of the resonant cavity are arranged in each end fixing part,

the inner cavity of the fixed cover is provided with an elastic structure which is matched with the curved surface of the shell of the end fixing part.

10. The laser transmitter as claimed in claim 2,

it is characterized in that the utility model is characterized in that,

the outer diameter of the end fixing part is larger than the inner diameter of the metal cavity and smaller than the outer diameter of the metal cavity;

the inner diameter of the fixed cover is larger than the inner diameter of the cavity made of metal and smaller than the outer diameter of the cavity made of metal.

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