Sunlight direct pumping disc laser

Abstract

The invention provides a sunlight direct pumping disc laser, which belongs to the field of lasers and comprises a sunlight collection system, an energy output end of the sunlight collection system is connected with an optical fiber coupling head, and the optical fiber coupling head is connected with a disc laser through an optical fiber; or, the energy output end of the sunlight collection system is provided with an optical lens group, and the light source output end of the optical lens group is provided with a disc laser. Sunlight can be directly used as a pumping source, and stable and efficient laser output can be generated without an external power supply or complex energy conversion equipment.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of lasers, and particularly relates to a solar direct pumping disc laser. BACKGROUND

[0002] Since the first laser was invented by T.H. Maiman of the Hughes Research Laboratories in 1960, laser technology has undergone rapid development, and has gradually penetrated into many fields such as scientific research, entertainment, medical treatment, industry and national defense, and has had a huge impact. Moreover, with the progress of science and technology and the development of industry, people have put forward higher requirements for the performance of lasers. Therefore, it is urgent to develop new pumping lasers.

[0003] At present, the pumping methods adopted by the existing pumping lasers mainly include the following: 1. optical pumping, in fiber lasers, optical pumping is a common pumping method, which introduces a specific wavelength of laser into a gain medium through an optical fiber, and the commonly used pumping source is a semiconductor laser, which can produce a specific wavelength of light to more effectively excite the gain medium; 2. electrical pumping, current passes through a laser material to provide the energy required to excite atoms or molecules; 3. chemical pumping, which is usually through a chemical reaction to provide energy to excite atoms or molecules of a laser material, and this method is commonly used in gas lasers, in which the energy generated by the chemical reaction is used to excite gas molecules to an excited state, and then laser is generated.

[0004] However, the above-mentioned several pumping methods all have problems of high energy consumption and high cost in actual application, and do not meet the current green and environmentally friendly production requirements. SUMMARY

[0005] The technical problem solved by the application is to provide a solar direct pumping disc laser which can be directly pumped by sunlight, and to solve the problems of high energy consumption and dependence on the power grid of traditional lasers, and to broaden the application prospect of disc lasers in remote areas and environments without power grid coverage.

[0006] In order to solve the above technical problems, the technical scheme provided by the application is as follows: a solar direct pumping disc laser, which comprises a sunlight collecting system, the energy output end of the sunlight collecting system is connected with a fiber coupling head, the fiber coupling head is connected with a disc laser through an optical fiber; or, the energy output end of the sunlight collecting system is provided with an optical lens group, and the light source output end of the optical lens group is provided with a disc laser. At this time, the application can directly use sunlight as a pumping source, without the need for an external power supply or a complex energy conversion device, and can produce stable and efficient laser output.

[0007] Further, the sunlight collecting system is provided with a sun tracking mechanism, and the sun tracking mechanism is used to adjust the angle of the concave mirror or parabolic mirror in the sunlight collecting system in real time, so that the sunlight can be fully reflected and collected.

[0008] Further, the disc laser includes a shell, an optical lens group and a laser disc group are installed in the shell, an optical source input port and an optical source output port are arranged on the outer side of the shell, the input end of the optical lens group is aligned with the optical source input port, the output end of the optical lens group is aligned with the input end of the laser disc group, and the output end of the laser disc group is aligned with the optical source output port. At this time, the pump light collected and converted by the sunlight collecting system can be focused to the laser disc group through the optical lens group, so that the intensity of the pump light reaches the requirement of exciting laser; and then the pump light is output from the optical source output port after gain processing by the laser disc group.

[0009] Further, the optical lens group includes a spherical mirror, the middle part of the spherical mirror is provided with an optical source output hole, the concave side of the spherical mirror is provided with a collimating and expanding mirror and the laser disc group, and the laser disc group is aligned with the optical axis of the spherical mirror. At this time, the light source received by the optical source input port can be collimated by the collimating and expanding mirror, and then the light source is reflected to the laser disc group under the action of the spherical mirror for gain processing, and finally the light source processed by the laser disc group is output to the optical source output port through the optical source output hole.

[0010] Further, a light transmission path is arranged between the collimating and expanding mirror and the spherical mirror and / or between the spherical mirror and the laser disc group, and the light beam is processed and propagated through the light transmission path, so that the light beam can pass through the laser disc group for multiple times to obtain sufficient amplification.

[0011] Further, the light transmission path comprises an angular coupling mirror array arranged between the spherical mirror and the laser disc group, the angular coupling mirror array comprises six angular coupling mirrors in the shape of regular triangular prisms arranged in a circle with the optical axis of the spherical mirror as the center of the array; each angular coupling mirror comprises three congruent isosceles right triangle mirror pieces, and any one of the isosceles right triangle mirror pieces in the same angular coupling mirror is arranged perpendicularly to the other two isosceles right triangle mirror pieces, and the two right angle sides of any one of the isosceles right triangle mirror pieces in the same angular coupling mirror are respectively attached to the right angle sides of the other two isosceles right triangle mirror pieces; the vertices of all the angular coupling mirrors are coplanar, and all the vertices of the angular coupling mirrors are directed away from the spherical mirror, the plane where the vertices of all the angular coupling mirrors are located is perpendicular to the optical axis of the spherical mirror, the bottom sides of all the angular coupling mirrors are connected in sequence, and all the angular coupling mirrors are provided with notches at the positions located at the center of the array, and the notches of the six angular coupling mirrors jointly form a light beam passing channel to ensure that the reflected light beam can be smoothly transmitted to the laser disc group through the light beam passing channel.

[0012] Further, the angular coupling mirror array is provided with a light passing hole at the position opposite to the collimating and expanding mirror, and the light passing hole is used to ensure that the light beam shaped by the collimating and expanding mirror can be first shot towards the spherical mirror along a direction parallel to the optical axis of the spherical mirror, and then reflected by the spherical mirror and shot towards each angular coupling mirror in the angular coupling mirror array.

[0013] Further, the shell of the disc laser is provided with a cooling circulation system, and the cooling circulation system is used to timely lead out the heat generated by the disc gain medium in the process of laser generation, keep the working temperature within a suitable range, and ensure long-term stable operation of the laser.

[0014] Further, the solar light directly pumped disc laser further comprises a control system, the control system is in communication connection with the solar light collecting system and the disc laser, and controls the solar light collecting system and the disc laser.

[0015] Further, the control system is in communication connection with a remote monitoring system and a fault diagnosis system, and the remote monitoring system and the fault diagnosis system are used to facilitate remote management and maintenance of the staff.

[0016] From the above technical solutions, it can be seen that the present application has the following advantages: the present application can directly use solar light as a pumping source, without the need of external power supply or complex energy conversion equipment, and can generate stable and efficient laser output. BRIEF DESCRIPTION OF DRAWINGS

[0017] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the description will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a structural diagram of a specific embodiment of the present invention. Figure 1 ; Figure 2 This is a structural diagram of a specific embodiment of the present invention. Figure 2 ; Figure 3 This is a structural diagram of a specific embodiment of the present invention. Figure 3 .

[0019] In the diagram: 1. Optical lens group; 2. Sunlight collection system; 3. Sun tracking system; 4. Laser disk group; 5. Disk laser; 6. Light source output aperture; 7. Spherical mirror; 8. Collimating beam expander; 9. Optical fiber; 10. Fiber optic coupler; 11. Corner coupler mirror; 12. Light passage; 13. Notch. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] like Figure 1 , Figure 2 As shown, the present invention provides a solar-pumped disk laser, which includes a solar collection system 2 and a solar tracking system 3. The energy output end of the solar collection system 2 is connected to an optical fiber coupler 10, and the optical fiber coupler 10 is connected to a disk laser 5 via an optical fiber. Alternatively, the energy output end of the solar collection system 2 is provided with an optical lens group 1, and the light source output end of the optical lens group 1 is provided with a disk laser 5.

[0022] The disc laser 5 comprises a shell, the outer side of the shell is provided with a light source input port and a light source output port, the inside of the shell is installed with an optical lens group and a laser disc group 4. Wherein, the input end of the optical lens group is aligned with the light source input port, the output end of the optical lens group is aligned with the input end of the laser disc group 4, and the output end of the laser disc group 4 is aligned with the light source output port. At this time, it can first focus the pump light collected and converted by the sunlight collection system 2 to the laser disc group 4 through the optical lens group, to ensure that the pump light intensity reaches the need of exciting laser; then it is output from the light source output port after gain processing by the laser disc group 4. Specifically in this embodiment, the optical lens group adopts a structure composed of a spherical mirror 7, a collimating and expanding mirror 8 and the like, at this time, it comprises the spherical mirror 7 with a light source output hole 6 opened in the middle, and the concave side of the spherical mirror 7 is provided with the collimating and expanding mirror 8 and the laser disc group 4, and the collimating and expanding mirror 8 is aligned with the light source input port, the laser disc group 4 is aligned with the optical axis of the spherical mirror, and a light transmission path is arranged between the collimating and expanding mirror 8 and the spherical mirror 7. The light transmission path comprises an angular coupling mirror array arranged between the spherical mirror 7 and the laser disc group 4, the angular coupling mirror array comprises six angular coupling mirrors 11 of regular triangular pyramid shape arranged in a circle with the optical axis of the spherical mirror 7 as the array center; each angular coupling mirror 11 comprises three congruent isosceles right triangle mirror pieces, and any one isosceles right triangle mirror piece in the same angular coupling mirror 11 is arranged vertically to the other two isosceles right triangle mirror pieces, and the two right angle sides of any one isosceles right triangle mirror piece in the same angular coupling mirror 11 are respectively attached to the right angle sides of the other two isosceles right triangle mirror pieces; the vertices of all angular coupling mirrors 11 are coplanar, and the vertices of all angular coupling mirrors 11 are all directed away from the spherical mirror 7, the plane where the vertices of all angular coupling mirrors 11 are located is perpendicular to the optical axis of the spherical mirror 7, the bottom edges of all angular coupling mirrors 11 are sequentially connected end to end, and the positions of all angular coupling mirrors 11 at the array center are all provided with notches 13, and the notches 13 of the six angular coupling mirrors 11 together form a light beam passing channel aligned with the laser disc group 4, to ensure that the reflected light beam can be smoothly transmitted to the laser disc group 4 through the light beam passing channel. At the same time, it is also provided with a light transmission hole 12 at the position opposite to the collimating and expanding mirror 8 in the angular coupling mirror array, and the light transmission hole 12 ensures that the light beam shaped by the collimating and expanding mirror 8 can first be shot to the spherical mirror 7 along a direction parallel to the optical axis of the spherical mirror 7, and then be shot to each angular coupling mirror in the angular coupling mirror array after being reflected by the spherical mirror 7, and the light beam is processed by the laser disc group 4 after being transmitted and gained between each angular coupling mirror 11 and the spherical mirror 7 and the laser disc group 4, and then output to the light source output port through the light source output hole 6.

[0023] And in order to ensure that the whole disc laser 5 can be stable for a long time, the application can set a cooling circulation system in the shell of the disc laser 5, and through the cooling circulation system, the heat generated in the process of laser generation can be exported in time, so that the working temperature can be kept in the appropriate range.

[0024] In addition, the solar light direct pumping disc laser 5 also comprises a control system, the control system is in communication connection with the solar light collecting system 2 and the disc laser 5, and the control system is also in communication connection with a remote monitoring system and a fault diagnosis system, so that the remote management and maintenance of the staff can be facilitated through the remote monitoring system and the fault diagnosis system.

[0025] The terms "first", "second", "third", "fourth" and the like in the description and claims of the application and in the above DETAILED DESCRIPTION of the Invention (if any) are used for distinguishing between similar objects talking about the embodiments of the application and do not necessarily have to appear in conjunction with the embodiments of the application. It is to be understood that the use of these terms mean that the corresponding object is to be distinguished from another object having the same name but appearing in a different embodiment of the application. The skilled person should understand that the data used in this way can be exchanged under appropriate circumstances, so that the embodiments of the application described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion.

[0026] The above description of disclosed embodiments enables a person skilled in the art to implement or use the application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the application. Therefore, the application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A direct solar-pumped disk laser, characterized in that, The solar light collecting system is connected with a fiber coupling head at an energy output end of the solar light collecting system, and the fiber coupling head is connected with a disc laser through an optical fiber.

2. The direct sunlight pumped disc laser according to claim 1, characterized in that, The solar light collecting system is provided with a sun tracking mechanism.

3. The direct sunlight pumped disc laser according to claim 1, characterized in that, The disc laser comprises a shell, an optical lens group and a laser disc group are arranged in the shell, an optical source input port and an optical source output port are arranged on the shell, an input end of the optical lens group is aligned with the optical source input port, an output end of the optical lens group is aligned with an input end of the laser disc group, and an output end of the laser disc group is aligned with the optical source output port.

4. The direct sunlight pumped disc laser according to claim 3, characterized in that, The optical lens group comprises a spherical mirror, an optical source output hole is arranged in a middle part of the spherical mirror, a collimating and expanding mirror and the laser disc group are arranged on a concave side of the spherical mirror, and the laser disc group is aligned with an optical axis of the spherical mirror.

5. The direct sunlight pumped disc laser according to claim 4, characterized in that, A light transmission path is arranged between the collimating and expanding mirror and the spherical mirror and / or between the spherical mirror and the laser disc group.

6. The direct sunlight pumped disc laser according to claim 5, characterized in that, The light transmission path comprises an angle coupling mirror array arranged between the spherical mirror and the laser disc group, the angle coupling mirror array comprises six angle coupling mirrors in the shape of regular triangular prisms arranged in a circle with the optical axis of the spherical mirror as the array center, each angle coupling mirror comprises three congruent isosceles right-angled triangular mirror pieces, any one of the isosceles right-angled triangular mirror pieces in the same angle coupling mirror is arranged perpendicularly to the other two isosceles right-angled triangular mirror pieces, and two right-angle sides of any one of the isosceles right-angled triangular mirror pieces in the same angle coupling mirror are respectively attached to the right-angle sides of the other two isosceles right-angled triangular mirror pieces, the vertices of all the angle coupling mirrors are coplanar and all the vertices are directed away from the spherical mirror, the plane where the vertices of all the angle coupling mirrors are located is perpendicular to the optical axis of the spherical mirror, the bottom sides of all the angle coupling mirrors are sequentially connected end to end, a notch is arranged at the position of the array center on all the angle coupling mirrors, and the notches of the six angle coupling mirrors jointly form a light beam passing channel.

7. The direct sunlight pumped disc laser according to claim 6, characterized in that, A light transmission hole is arranged at a position opposite to the collimating and expanding mirror in the angle coupling mirror array.

8. The direct sunlight pumped disc laser of claim 3, wherein, A cooling circulation system is arranged in the shell of the disc laser.

9. The direct sunlight pumped disc laser of claim 1, wherein, The solar light directly pumped disc laser further comprises a control system, the control system is in communication connection with the solar light collecting system and the disc laser.

10. The direct sunlight pumped disc laser of claim 9, wherein, The control system is in communication connection with a remote monitoring system and a fault diagnosis system.

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