CN104682188B - Modularization non-colinear serial group bundle laser based on stimulated Brillouin scattering - Google Patents
Modularization non-colinear serial group bundle laser based on stimulated Brillouin scattering Download PDFInfo
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- CN104682188B CN104682188B CN201510148102.2A CN201510148102A CN104682188B CN 104682188 B CN104682188 B CN 104682188B CN 201510148102 A CN201510148102 A CN 201510148102A CN 104682188 B CN104682188 B CN 104682188B
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Abstract
Modularization non-colinear serial group bundle laser based on stimulated Brillouin scattering, is related to laser serial group bundle technology.When it carries out serial group bundle to solve some Shu Jiguang, traditional flatlike structure floor space is big, integration degree is low between seed light and pumping optical module, causes the problem of laser beam quantity can not realize effective superposition.The present invention is made up of beam laser main body, m layers of non-colinear Brillouin amplification unit one and n-layer non-colinear Brillouin amplification unit two, the m layers of non-colinear Brillouin amplification unit one and n-layer non-colinear Brillouin amplification unit two are successively cross-superimposed in beam laser main body, and seed light is amplified step by step.Each module volume arrangement of the present invention is simple, and intermodule is stacked using stereochemical structure, and system layout is compact, floor space is small.The efficiency of assembling and stability of laser system can be improved according to the quantity of amplifying unit is increased or decreased the need for output energy, it is adaptable to big energy and high power solid beam laser.
Description
Technical field
The present invention relates to the non-colinear serial group bundle technology based on stimulated Brillouin scattering, belong to laser field.
Background technology
In recent years, had with big energy, repetition rate, high light beam quality solid state laser in fields such as industry, scientific researches
It is widely applied.At present, gain can effectively be overcome by the technological means for being synthesized multi beam low-power, small energy laser
The technical barriers such as size, heat affecting and the damage threshold of medium, realize big energy, high power laser light output.Based on nonlinear optical
Learn phase conjugation principle stimulated Brillouin scattering (SBS) non-colinear serial group bundle have simple in construction, output beam quality it is good,
And the beam quality and stability of pumping light on output light influence it is small the advantages of, by the extensive concern of scientific research personnel.
But the laser beam combination installation area of traditional platform formula is big, integrated journey between seed light and pumping optical module
Degree is low, and with the increase of laser beam quantity, the spatial arrangement of device is increasingly complex, further effectively superposition difficult to realize, surely
It is qualitative to be deteriorated therewith.
The content of the invention
When carrying out serial group bundle the invention aims to solve some Shu Jiguang, traditional flatlike structure takes up an area face
Integration degree is low between long-pending big, seed light and pumping optical module, causes laser beam quantity can not realize further effectively superposition
The problem of there is provided a kind of modularization non-colinear serial group bundle laser based on stimulated Brillouin scattering.
Modularization non-colinear serial group bundle laser of the present invention based on stimulated Brillouin scattering, including beam combination swash
Light device main body, m layers of non-colinear Brillouin amplification unit one and n-layer non-colinear Brillouin amplification unit two, n=m or n=m-1, m
For natural number, and m >=1；
The beam laser main body include single longitudinal mode laser 1, optoisolator 1,1/2 wave plate 1, polarizer 1,
Module 9 occurs for optoisolator 27, multiple pumping light amplification modules 1, seed light, medium pool 1, optical trap 1, complete
Anti- mirror 1 and polarization spectro module 1, the light beam of the outgoing of single longitudinal mode laser 1 sequentially pass through optoisolator 1,1/2 wave plate
1 and polarizer 1 after be divided into two beams, it is a branch of to be reflected into first layer non-colinear Brillouin amplification through polarization spectro module 1
Unit one, another beam sequentially enters multiple pumping light amplification modules 1 after optoisolator 27, through each pumping light amplification
Pumping light after module 1 is amplified enters medium pool 1, and optical trap one is incident to from the pumping light of the outgoing of medium pool 1
12, the seed light that the generation of module 9 occurs for seed light is incident to medium pool 1, from multiple outgoing of pumping light amplification module 1
Pumping light intersects with seed light in medium pool 1, is reflected into from the seed light of the outgoing of medium pool 1 by total reflective mirror 1
Enter first layer non-colinear Brillouin amplification unit one；
Non-colinear Brillouin amplification unit one includes total reflective mirror 3 15, medium pool 2 16, optical trap 2 17, total reflective mirror four
18th, multiple pumping light amplification modules 2 19, polarization spectro module 2 20 and polarizer 4 21；
In first layer non-colinear Brillouin amplification unit one：The seed light of entrance is incident to Jie after being reflected through total reflective mirror 3 15
Matter pond 2 16, the seed light after amplifying through the medium pool 2 16 is incident to total reflective mirror 4 18 and is reflected into by the total reflective mirror 4 18
In first layer non-colinear Brillouin amplification unit two, the pumping light into this layer of non-colinear Brillouin amplification unit one is incident to partially
Shake spectral module 2 20, and is reflected light and transmitted light by 2 20 points of polarization spectro module, and it is non-that the transmitted light enters first layer
In conllinear Brillouin amplification unit two, the reflected light sequentially enters multiple pumping light amplification modules after being reflected through polarizer 4 21
2 19, the pumping light after amplifying through each pumping light amplification module 2 19 enters medium pool 2 16, from multiple pumping light amplification moulds
The pumping light of the outgoing of block 2 19 intersects with seed light in medium pool 2 16, is incident to from the pumping light of the outgoing of medium pool 2 16
Optical trap 2 17；
Described non-colinear Brillouin amplification unit two includes total reflective mirror 6 22, medium pool 3 23, optical trap 3 24, complete
Anti- mirror 7 25, multiple pumping light amplification modules 3 26, polarization spectro module 3 27 and polarizer 6 28；
In first layer non-colinear Brillouin amplification unit two：The seed light of entrance enters medium after being reflected through total reflective mirror 6 22
Pond 3 23, the seed light after amplifying through the medium pool 3 23 is incident to total reflective mirror 7 25, and reflects laggard by the total reflective mirror 7 25
Enter in next layer of non-colinear Brillouin amplification unit one, the pumping light into this layer of non-colinear Brillouin amplification unit two is incident to
Polarization spectro module 3 27, and be reflected light and transmitted light by 3 27 points of polarization spectro module, the transmitted light enters next layer
In non-colinear Brillouin amplification unit one, the reflected light sequentially enters multiple pumping light amplification moulds after being reflected through polarizer 6 28
Block 3 26, the pumping light after amplifying through each pumping light amplification module 3 26 enters medium pool 3 23, from multiple pumping light amplification
The pumping light of the outgoing of module 3 26 intersects with seed light in medium pool 3 23, and the pumping light from the outgoing of medium pool 3 23 is incident
To optical trap 3 24；
M layers of non-colinear Brillouin amplification unit one and n-layer non-colinear Brillouin amplification unit two are interspersed mutually to be set, i.e.,：
Next layer of non-colinear Brillouin amplification unit two is incident to from the seed light of every layer of outgoing of non-colinear Brillouin amplification unit one
Total reflective mirror 6 22, is incident to next layer of non-colinear Brillouin from the seed light of this layer of outgoing of non-colinear Brillouin amplification unit two and puts
The total reflective mirror 3 15 of big unit one；Transmitted away from the polarization spectro module 2 20 of every layer of non-colinear Brillouin amplification unit one
Pumping light is incident to the polarization spectro module 3 27 of next layer of non-colinear Brillouin amplification unit two, from the polarization spectro module three
27 pumping lights transmitted away are incident to the polarization spectro module 2 20 of next layer of non-colinear Brillouin amplification unit one.
Intert successively from the seed light of beam laser main body outgoing and enter non-colinear Brillouin amplification unit one and non-co-
Line Brillouin amplification unit two, the direction of propagation of seed light is snakelike.
Comprising a polarization point in every layer of non-colinear Brillouin amplification unit one and non-colinear Brillouin amplification unit two
Optical module, pumping light is successively through multiple polarization spectro modules, often after a polarization spectro module, and the pumping light of reflection enters
Non-colinear Brillouin amplification unit one or non-colinear Brillouin amplification unit two where the polarization spectro module, the pumping of transmission
Light enters next polarization spectro module.
Whole laser is divided into multiple modules, i.e. beam laser main body and some non-colinear Brillouin amplifications by the present invention
Unit one and non-colinear Brillouin amplification unit two, the spatial arrangement of the module are simple, and intermodule is stacked using stereochemical structure,
System layout is compact, floor space is small.It can be improved according to the quantity of amplifying unit is increased or decreased the need for output energy
The efficiency of assembling and stability of laser system, it is adaptable to big energy and high power solid beam laser.
Brief description of the drawings
Fig. 1 is the modularization non-colinear serial group bundle laser based on stimulated Brillouin scattering described in embodiment one
Structural representation；
Fig. 2 be embodiment one in seed light direction of propagation schematic diagram；
Fig. 3 be embodiment one in pumping light direction of propagation schematic diagram；
Fig. 4 be embodiment four in beam laser main body structural representation；
Fig. 5 be embodiment six in non-colinear Brillouin amplification unit one structural representation；
Fig. 6 be embodiment eight in non-colinear Brillouin amplification unit two structural representation.
Embodiment
Embodiment one：Illustrate present embodiment with reference to Fig. 1 to Fig. 3, described in present embodiment based on being excited cloth
In deep pool scattering modularization non-colinear serial group bundle laser, including beam laser main body, m layers of non-colinear Brillouin amplification list
Member one and n-layer non-colinear Brillouin amplification unit two, n=m or n=m-1, m are natural number, and m >=1；
The beam laser main body include single longitudinal mode laser 1, optoisolator 1,1/2 wave plate 1, polarizer 1,
Module 9 occurs for optoisolator 27, multiple pumping light amplification modules 1, seed light, medium pool 1, optical trap 1, complete
Anti- mirror 1 and polarization spectro module 1, the light beam of the outgoing of single longitudinal mode laser 1 sequentially pass through optoisolator 1,1/2 wave plate
1 and polarizer 1 after be divided into two beams, it is a branch of to be reflected into first layer non-colinear Brillouin amplification through polarization spectro module 1
Unit one, another beam sequentially enters multiple pumping light amplification modules 1 after optoisolator 27, through each pumping light amplification
Pumping light after module 1 is amplified enters medium pool 1, and optical trap one is incident to from the pumping light of the outgoing of medium pool 1
12, the seed light that the generation of module 9 occurs for seed light is incident to medium pool 1, from multiple outgoing of pumping light amplification module 1
Pumping light intersects with seed light in medium pool 1, is reflected into from the seed light of the outgoing of medium pool 1 by total reflective mirror 1
Enter first layer non-colinear Brillouin amplification unit one；
Non-colinear Brillouin amplification unit one includes total reflective mirror 3 15, medium pool 2 16, optical trap 2 17, total reflective mirror four
18th, multiple pumping light amplification modules 2 19, polarization spectro module 2 20 and polarizer 4 21；
In first layer non-colinear Brillouin amplification unit one：The seed light of entrance is incident to Jie after being reflected through total reflective mirror 3 15
Matter pond 2 16, the seed light after amplifying through the medium pool 2 16 is incident to total reflective mirror 4 18 and is reflected into by the total reflective mirror 4 18
In first layer non-colinear Brillouin amplification unit two, the pumping light into this layer of non-colinear Brillouin amplification unit one is incident to partially
Shake spectral module 2 20, and is reflected light and transmitted light by 2 20 points of polarization spectro module, and it is non-that the transmitted light enters first layer
In conllinear Brillouin amplification unit two, the reflected light sequentially enters multiple pumping light amplification modules after being reflected through polarizer 4 21
2 19, the pumping light after amplifying through each pumping light amplification module 2 19 enters medium pool 2 16, from multiple pumping light amplification moulds
The pumping light of the outgoing of block 2 19 intersects with seed light in medium pool 2 16, is incident to from the pumping light of the outgoing of medium pool 2 16
Optical trap 2 17；
Described non-colinear Brillouin amplification unit two includes total reflective mirror 6 22, medium pool 3 23, optical trap 3 24, complete
Anti- mirror 7 25, multiple pumping light amplification modules 3 26, polarization spectro module 3 27 and polarizer 6 28；
In first layer non-colinear Brillouin amplification unit two：The seed light of entrance enters medium after being reflected through total reflective mirror 6 22
Pond 3 23, the seed light after amplifying through the medium pool 3 23 is incident to total reflective mirror 7 25, and reflects laggard by the total reflective mirror 7 25
Enter in next layer of non-colinear Brillouin amplification unit one, the pumping light into this layer of non-colinear Brillouin amplification unit two is incident to
Polarization spectro module 3 27, and be reflected light and transmitted light by 3 27 points of polarization spectro module, the transmitted light enters next layer
In non-colinear Brillouin amplification unit one, the reflected light sequentially enters multiple pumping light amplification moulds after being reflected through polarizer 6 28
Block 3 26, the pumping light after amplifying through each pumping light amplification module 3 26 enters medium pool 3 23, from multiple pumping light amplification
The pumping light of the outgoing of module 3 26 intersects with seed light in medium pool 3 23, and the pumping light from the outgoing of medium pool 3 23 is incident
To optical trap 3 24；
M layers of non-colinear Brillouin amplification unit one and n-layer non-colinear Brillouin amplification unit two are interspersed mutually to be set, i.e.,：
Next layer of non-colinear Brillouin amplification unit two is incident to from the seed light of every layer of outgoing of non-colinear Brillouin amplification unit one
Total reflective mirror 6 22, is incident to next layer of non-colinear Brillouin from the seed light of this layer of outgoing of non-colinear Brillouin amplification unit two and puts
The total reflective mirror 3 15 of big unit one；Transmitted away from the polarization spectro module 2 20 of every layer of non-colinear Brillouin amplification unit one
Pumping light is incident to the polarization spectro module 3 27 of next layer of non-colinear Brillouin amplification unit two, from the polarization spectro module three
27 pumping lights transmitted away are incident to the polarization spectro module 2 20 of next layer of non-colinear Brillouin amplification unit one.
As shown in figure 1, whole laser is divided into multiple modules, i.e. beam laser main body, Ruo Ganfei by present embodiment
Conllinear Brillouin amplification unit one and non-colinear Brillouin amplification unit two, beam laser main body are used for producing seed light and taken out
Light is transported, and seed light is amplified, m layers of non-colinear Brillouin amplification unit one and n-layer non-colinear Brillouin amplification unit two
It is successively cross-superimposed in beam laser main body, seed light is amplified step by step.
In beam laser, non-colinear Brillouin amplification unit one and non-colinear Brillouin amplification unit two, seed light with
Pumping light enters medium pool from the relative two ends of medium pool respectively, but seed light and pumping light are in a certain angle, and pumping light is being situated between
Interacted in matter pond with seed light, after being amplified to seed light, remaining pumping light enters optical trap.
As depicted in figs. 1 and 2, (module here is in each module for total reflective mirror 1, total reflective mirror 3 15 and total reflective mirror 7 25
Refer to beam laser, non-colinear Brillouin amplification unit one and non-colinear Brillouin amplification unit two) the same side, total reflective mirror four
18 and total reflective mirror 6 22 each module other side.
Seed light 10 is incident to first layer non-colinear Brillouin amplification unit one by total reflective mirror 1 and total reflective mirror 3 15,
First layer non-colinear Brillouin amplification unit two is incident to by total reflective mirror 4 18 and total reflective mirror 6 22, then passes through total reflective mirror 7 25
Second layer non-colinear Brillouin amplification unit one is incident to total reflective mirror 3 15, by that analogy.
As shown in figures 1 and 3, pumping light 6 by polarization spectro module 1 to the He of non-colinear Brillouin amplification unit one
Non-colinear Brillouin amplification unit two is transmitted, and pumping light 6 is incident in non-colinear cloth by the part of polarization spectro module 2 20
Deep amplifying unit one, remaining pumping light 6 is transmitted to polarization spectro module 3 27, and pumping light 6 passes through polarization spectro module 3 27
A part is incident to non-colinear Brillouin amplification unit two, and remaining pumping light 6 is transmitted to second layer non-colinear Brillouin amplification
The polarization spectro module 2 20 of unit one, by that analogy.
As n=m, amplification light is final from m layers of non-colinear Brillouin amplification unit two, i.e., total number of plies 2m+1 layers of output；
As n=m-1, amplification light is finally exported from m-1 layers of non-colinear Brillouin amplification unit two, i.e., total number of plies 2m layers of output.
In use, only needing to beam laser main body, m layers of non-colinear Brillouin amplification unit one and n-layer non-colinear cloth
In deep amplifying unit two simply assemble, beam laser main body and some Hes of non-colinear Brillouin amplification unit one
Non-colinear Brillouin amplification unit two can be fabricated to identical external dimensions, and each module volume arrangement is simple, and intermodule is using vertical
Body structure is stacked, and system layout is compact, floor space is small.Can according to output energy the need for increase or decrease non-colinear cloth
In deep amplifying unit one and non-colinear Brillouin amplification unit two quantity, improve the efficiency of assembling and stably of laser system
Property.
As shown in figure 1, in order that structure is compacter, single longitudinal mode laser 1 can not be with optoisolator 1,1/2 wave plate
1 and polarizer 1 it is coaxial, at this time, it may be necessary between single longitudinal mode laser 1 and optoisolator 1 increase light beam deviation component
2, for changing laser propagation direction.
Embodiment two：Illustrate present embodiment with reference to Fig. 4, present embodiment is to the base described in embodiment one
Further limited in the modularization non-colinear serial group bundle laser of stimulated Brillouin scattering, in present embodiment, described kind
Sub-light occurs module 9 and includes the 9-1 of 1/2 wave plate three, the 9-2 of polarizer three, the 9-3 of amplifier two, the 9-4 of polarization apparatus two, condenser lens 9-
5th, seed light produces the pond 9-6 and 9-7 of amplifier three, and the pumping light for occurring module 9 into seed light is transmitted through the 9-1 of 1/2 wave plate three
After be incident to the 9-2 of polarizer three, and by the polarizer three 9-2 points be reflected light and transmitted light, the transmitted light enters pumping light
Amplification module 1, the reflected light, which is sequentially passed through, enters seed after the 9-3 of amplifier two, the 9-4 of polarization apparatus two and condenser lens 9-5
Light produces pond 9-6, and the seed light that seed light produces pond 9-6 generations sequentially passes through condenser lens 9-5, the 9-4 of polarization apparatus two, amplifier
After two 9-3, the 9-2 of polarizer three and the 9-7 of amplifier three, medium pool 1 is incident to.
As shown in figure 4, in present embodiment, the 9-2 of polarizer three, the 9-3 of amplifier two, the 9-4 of polarization apparatus two, condenser lens 9-
5th, seed light produces pond 9-6, the 9-7 of amplifier three, medium pool 1 and the coaxial setting of optical trap 1, optical trap 1
Gap is provided centrally with, enters medium pool 1 from the seed light of the 9-7 outgoing of amplifier three through the gap.
Embodiment three：Illustrate present embodiment with reference to Fig. 4, present embodiment is to the base described in embodiment two
Further limited in the modularization non-colinear serial group bundle laser of stimulated Brillouin scattering, in present embodiment, described takes out
Transport light amplification module 1 and include the 8-1 of 1/2 wave plate two, the 8-2 of polarizer two, the 8-3 of amplifier one, the 8-4 of polarization apparatus one, full-reflector
The one 8-5 and 8-6 of total reflective mirror two, pumping light enters in the pumping light amplification module 1 through the 8-1 of 1/2 wave plate two, from 1/2 wave plate
The pumping light of two 8-1 transmissions is incident to the 8-2 of polarizer two, and it is reflected light and transmitted light to be divided by the polarizer two 8-2, wherein thoroughly
Light is penetrated into next pumping light amplification module 1, reflected light sequentially passes through the 8-3 of amplifier one and the 8-4 of polarization apparatus one, then by
Along backtracking after the 8-5 of full-reflector one reflections, the pumping light of return is incident to the 8- of total reflective mirror two after being transmitted through the 8-2 of polarizer two
6, and medium pool 1 is reflected into by the 8-6 of total reflective mirror two.
As shown in figure 4, all pumping light amplification modules 1 are sequentially entered from the pumping light of the outgoing of optoisolator 27, and often
After a 8-1 of 1/2 wave plate two, pumping light is divided into two-beam, i.e. reflected light and transmitted light, reflected light enter this 1/2
Pumping light amplification module 1 where the 8-1 of wave plate two, 1/2 wave plate that transmitted light enters in next pumping light amplification module 1
Two 8-1.
The 8-2 of polarizer two, the 8-3 of amplifier one, the 8-4 of polarization apparatus one, the 8-5 of full-reflector one and the 8-6 of total reflective mirror two is coaxial sets
Put, and the axle that the axle occurs with seed light in module 9 is parallel, occurring seed light, the structure of module 9 is compacter, and reduction device is accounted for
Ground area.
Embodiment four：Illustrate present embodiment with reference to Fig. 4, present embodiment is to the base described in embodiment three
Further limited in the modularization non-colinear serial group bundle laser of stimulated Brillouin scattering, in present embodiment, pumping light is put
The quantity of big module 1 is even number, and multiple pumping light amplification modules 1 are symmetrically distributed in the both sides that module 9 occurs for seed light.
In present embodiment, the quantity of the pumping light amplification module 1 of the both sides of seed light 10 is equal, and the pumping light of both sides
6 is symmetrical, to improve the uniformity of the light beam of seed light 10 after amplification.
Embodiment five：Illustrate present embodiment with reference to Fig. 5, present embodiment is to the base described in embodiment three
Further limited in the modularization non-colinear serial group bundle laser of stimulated Brillouin scattering, in present embodiment, described takes out
Transport light amplification module 2 19 identical with the structure of pumping light amplification module 1.
As shown in figure 5, in present embodiment, pumping light amplification module 2 19 includes the 19-1 of 1/2 wave plate four, polarizer five
19-2, the 19-3 of amplifier four, the 19-4 of polarization apparatus three, the 19-5 of full-reflector two and the 19-6 of total reflective mirror five, pumping light amplification module two
19 with the structure and principle all same of pumping light amplification module 1.
After pumping light reflects through polarizer 4 21, a 19-1 of 1/2 wave plate four is incident to, and by 1/2 wave plate four 19-1
It is divided into two-beam, i.e. reflected light and transmitted light, the transmitted light is incident to 1/2 wave plate of next pumping light amplification module 2 19
Four 19-1, the reflected light enters medium pool 2 16 after being transmitted in this pumping light amplification module 2 19.
Embodiment six：Illustrate present embodiment with reference to Fig. 5, present embodiment is to the base described in embodiment five
Further limited in the modularization non-colinear serial group bundle laser of stimulated Brillouin scattering, in present embodiment, pumping light is put
The quantity of big module 2 19 is even number, and multiple pumping light amplification modules 2 19 are symmetrically distributed in the both sides of medium pool 2 16.
In present embodiment, pumping light is symmetrical on the seed light in medium pool, it is possible to increase seed light after amplification
The uniformity of 10 light beams.
Embodiment seven：Illustrate present embodiment with reference to Fig. 6, present embodiment is to the base described in embodiment five
Further limited in the modularization non-colinear serial group bundle laser of stimulated Brillouin scattering, in present embodiment, pumping light is put
Big module 3 26 includes the 26-1 of 1/2 wave plate five, the 26-2 of polarizer seven, the 26-3 of amplifier five, the 26-4 of polarization apparatus four, full-reflector three
26-5, the 26-6 of total reflective mirror eight and the 26-7 of total reflective mirror nine, pumping light enter the pumping light amplification module three through the 26-1 of 1/2 wave plate five
In 26, the 26-2 of polarizer seven is incident to from the 26-1 of 1/2 wave plate five pumping lights transmitted, and divided for reflection by the polarizer seven 26-2
Light and transmitted light, wherein transmitted light enter next pumping light amplification module 3 26, and reflected light sequentially passes through the 26-3 of amplifier five
With the 26-4 of polarization apparatus four, then it is totally reflected after the 26-5 of device three reflections along backtracking, the pumping light of return is through the 26- of polarizer seven
After 2 transmissions, then through the 26-6 of total reflective mirror eight and the 26-7 of total reflective mirror nine it is reflected into medium pool 3 23 successively.
As shown in fig. 6, pumping light amplification module 3 26 adds total reflective mirror on the basis of pumping light amplification module 2 19
Nine 26-7, to ensure seed light and pumping light respectively from relative two surface feeding sputtering of medium pool 3 23.
Embodiment eight：Illustrate present embodiment with reference to Fig. 6, present embodiment is to the base described in embodiment seven
Further limited in the modularization non-colinear serial group bundle laser of stimulated Brillouin scattering, in present embodiment, described takes out
The quantity for transporting light amplification module 3 26 is even number, and multiple pumping light amplification modules 3 26 are symmetrically distributed in non-colinear Brillouin
The both sides of medium pool 3 23 in amplifying unit two.
In present embodiment, pumping light is symmetrical on the seed light in medium pool, it is possible to increase seed light after amplification
The uniformity of 10 light beams.
For pumping light amplification module 1, pumping light amplification module 2 19 and pumping light amplification module 3 26, incident takes out
Fortune light is vertical polarization, and 1/2 wave plate is used to the polarization state of part or all of pumping light being converted to level by vertical polarization
Polarization, polarizer is used to pumping light being divided into two parts, i.e. horizontal polarization light transmission, orthogonal polarized light reflection.
Embodiment nine：Present embodiment is to the module based on stimulated Brillouin scattering described in embodiment one
Change non-colinear serial group bundle laser further to limit, in present embodiment, in medium pool 1, medium pool 2 16 and medium pool
In 3 23, seed light and pumping light are linearly polarized light.
Embodiment ten：Illustrate present embodiment with reference to Fig. 2, present embodiment is to the base described in embodiment eight
Further limited in the modularization non-colinear serial group bundle laser of stimulated Brillouin scattering, in present embodiment, medium pool one
11st, medium pool 2 16 is parallel with the direction of propagation of the seed light in medium pool 3 23.
In present embodiment, the direction of propagation of the seed light in All Media pond is parallel to each other, and this structure is more stepped up
Gather, further reduce laser floor space, realize more effectively superposition, improve the stability of beam laser.
Claims (10)
1. the modularization non-colinear serial group bundle laser based on stimulated Brillouin scattering, it is characterised in that：It swashs including beam combination
Light device main body, m layers of non-colinear Brillouin amplification unit one and n-layer non-colinear Brillouin amplification unit two, n=m or n=m-1, m
It is positive integer with n；
The beam laser main body includes single longitudinal mode laser (1), optoisolator one (3), 1/2 wave plate one (4), polarizer one
(5), module (9), medium pool one (11), optics occur for optoisolator two (7), multiple pumping light amplification modules one (8), seed light
Trap one (12), total reflective mirror one (13) and polarization spectro module one (14), the light beam of single longitudinal mode laser (1) outgoing are sequentially passed through
It is divided into two beams after optoisolator one (3), 1/2 wave plate one (4) and polarizer one (5), it is a branch of anti-through polarization spectro module one (14)
Inject into first layer non-colinear Brillouin amplification unit one, another beam sequentially enters multiple pumping after optoisolator two (7)
Light amplification module one (8), the pumping light after amplifying through each pumping light amplification module one (8) enters medium pool one (11), from Jie
The pumping light of matter pond one (11) outgoing is incident to optical trap one (12), and the seed light incidence that module (9) is produced occurs for seed light
To medium pool one (11), from the pumping light of multiple (8) outgoing of pumping light amplification module one with seed light in medium pool one (11)
It is interior intersecting, it is reflected into first layer non-colinear Brillouin amplification from the seed light of medium pool one (11) outgoing by total reflective mirror one (13)
Unit one；
Non-colinear Brillouin amplification unit one includes total reflective mirror three (15), medium pool two (16), optical trap two (17), total reflective mirror
Four (18), multiple pumping light amplification modules two (19), polarization spectro module two (20) and polarizer four (21)；
In first layer non-colinear Brillouin amplification unit one：The seed light of entrance is incident to medium after being reflected through total reflective mirror three (15)
Pond two (16), the seed light after amplifying through the medium pool two (16) is incident to total reflective mirror four (18) and anti-by the total reflective mirror four (18)
Inject in first layer non-colinear Brillouin amplification unit two, the pumping light into this layer of non-colinear Brillouin amplification unit one enters
Polarization spectro module two (20) is incident upon, and reflected light and transmitted light are divided into by polarization spectro module two (20), the transmitted light is entered
Enter in first layer non-colinear Brillouin amplification unit two, the reflected light sequentially enters multiple take out after being reflected through polarizer four (21)
Light amplification module two (19) is transported, the pumping light after amplifying through each pumping light amplification module two (19) enters medium pool two (16),
Intersect from the pumping light of multiple (19) outgoing of pumping light amplification module two with seed light in medium pool two (16), from medium pool
The pumping light of two (16) outgoing is incident to optical trap two (17)；
Described non-colinear Brillouin amplification unit two include total reflective mirror six (22), medium pool three (23), optical trap three (24),
Total reflective mirror seven (25), multiple pumping light amplification modules three (26), polarization spectro module three (27) and polarizer six (28)；
In first layer non-colinear Brillouin amplification unit two：The seed light of entrance enters medium pool after being reflected through total reflective mirror six (22)
Three (23), the seed light after amplifying through the medium pool three (23) is incident to total reflective mirror seven (25), and anti-by the total reflective mirror seven (25)
Enter after penetrating in next layer of non-colinear Brillouin amplification unit one, into the pumping light of this layer of non-colinear Brillouin amplification unit two
Polarization spectro module three (27) is incident to, and reflected light and transmitted light, the transmitted light are divided into by polarization spectro module three (27)
Into in next layer of non-colinear Brillouin amplification unit one, the reflected light sequentially enters multiple after being reflected through polarizer six (28)
Pumping light amplification module three (26), the pumping light after amplifying through each pumping light amplification module three (26) enters medium pool three
(23), the pumping light from multiple (26) outgoing of pumping light amplification module three intersects with seed light in medium pool three (23), from
The pumping light of medium pool three (23) outgoing is incident to optical trap three (24)；
M layers of non-colinear Brillouin amplification unit one and n-layer non-colinear Brillouin amplification unit two are interspersed mutually to be set, i.e.,：From every
The seed light of the outgoing of layer non-colinear Brillouin amplification unit one is incident to being all-trans for next layer of non-colinear Brillouin amplification unit two
Mirror six (22), next layer of non-colinear Brillouin amplification is incident to from the seed light of this layer of outgoing of non-colinear Brillouin amplification unit two
The total reflective mirror three (15) of unit one；Transmitted away from the polarization spectro module two (20) of every layer of non-colinear Brillouin amplification unit one
Pumping light be incident to the polarization spectro module three (27) of next layer of non-colinear Brillouin amplification unit two, from the polarization spectro mould
The pumping light that block three (27) is transmitted away is incident to the polarization spectro module two of next layer of non-colinear Brillouin amplification unit one
(20)。
2. the modularization non-colinear serial group bundle laser according to claim 1 based on stimulated Brillouin scattering, it is special
Levy and be：Described seed light occur module (9) comprising 1/2 wave plate three (9-1), polarizer three (9-2), amplifier two (9-3),
Polarization apparatus two (9-4), condenser lens (9-5), seed light produce pond (9-6) and amplifier three (9-7), occur mould into seed light
The pumping light of block (9) is incident to polarizer three (9-2) after being transmitted through 1/2 wave plate three (9-1), and by the polarizer three (9-2) point
For reflected light and transmitted light, the transmitted light enters pumping light amplification module one (8), and the reflected light sequentially passes through amplifier two
(9-3), polarization apparatus two (9-4) and condenser lens (9-5) enter seed light and produce pond (9-6) afterwards, and seed light produces pond (9-6) production
Raw seed light sequentially passes through condenser lens (9-5), polarization apparatus two (9-4), amplifier two (9-3), polarizer three (9-2) and put
After big device three (9-7), medium pool one (11) is incident to.
3. the modularization non-colinear serial group bundle laser according to claim 2 based on stimulated Brillouin scattering, it is special
Levy and be：Described pumping light amplification module one (8) includes 1/2 wave plate two (8-1), polarizer two (8-2), (8- of amplifier one
3), polarization apparatus one (8-4), full-reflector one (8-5) and total reflective mirror two (8-6), pumping light enter institute through 1/2 wave plate two (8-1)
State in pumping light amplification module one (8), the pumping light transmitted from 1/2 wave plate two (8-1) is incident to polarizer two (8-2), and by
The polarizer two (8-2) is divided into reflected light and transmitted light, and wherein transmitted light enters next pumping light amplification module one (8), instead
Penetrate light and sequentially pass through amplifier one (8-3) and polarization apparatus one (8-4), be then totally reflected device one (8-5) reflection Hou Yanyuan roads and return
Return, the pumping light of return is incident to total reflective mirror two (8-6) after being transmitted through polarizer two (8-2), and is reflected by total reflective mirror two (8-6)
Into medium pool one (11).
4. the modularization non-colinear serial group bundle laser according to claim 3 based on stimulated Brillouin scattering, it is special
Levy and be：The quantity of pumping light amplification module one (8) is even number, and multiple pumping light amplification modules one (8) are symmetrically distributed in kind
The both sides of module (9) occur for sub-light.
5. the modularization non-colinear serial group bundle laser according to claim 3 based on stimulated Brillouin scattering, it is special
Levy and be：Described pumping light amplification module two (19) is identical with the structure of pumping light amplification module one (8).
6. the modularization non-colinear serial group bundle laser according to claim 5 based on stimulated Brillouin scattering, it is special
Levy and be：The quantity of pumping light amplification module two (19) is even number, and multiple pumping light amplification modules two (19) are symmetrically distributed in
The both sides of medium pool two (16).
7. the modularization non-colinear serial group bundle laser according to claim 5 based on stimulated Brillouin scattering, it is special
Levy and be：Pumping light amplification module three (26) include 1/2 wave plate five (26-1), polarizer seven (26-2), amplifier five (26-3),
Polarization apparatus four (26-4), full-reflector three (26-5), total reflective mirror eight (26-6) and total reflective mirror nine (26-7), pumping light is through 1/2 ripple
Piece five (26-1) enters in the pumping light amplification module three (26), and the pumping light transmitted from 1/2 wave plate five (26-1) is incident to
Polarizer seven (26-2), and reflected light and transmitted light are divided into by the polarizer seven (26-2), wherein transmitted light enters next take out
Light amplification module three (26) is transported, reflected light sequentially passes through amplifier five (26-3) and polarization apparatus four (26-4), is then totally reflected
Along backtracking after device three (26-5) reflection, after the pumping light of return is transmitted through polarizer seven (26-2), then successively through total reflective mirror
Eight (26-6) and total reflective mirror nine (26-7) are reflected into medium pool three (23).
8. the modularization non-colinear serial group bundle laser according to claim 7 based on stimulated Brillouin scattering, it is special
Levy and be：The quantity of described pumping light amplification module three (26) is even number, and multiple pumping light amplification modules three (26) are symmetrical
The both sides for the medium pool three (23) being distributed in the non-colinear Brillouin amplification unit two.
9. the modularization non-colinear serial group bundle laser according to claim 1 based on stimulated Brillouin scattering, it is special
Levy and be：In medium pool one (11), medium pool two (16) and medium pool three (23), seed light and pumping light are linear polarization
Light.
10. the modularization non-colinear serial group bundle laser according to claim 8 based on stimulated Brillouin scattering, it is special
Levy and be：Medium pool one (11), medium pool two (16) are parallel with the direction of propagation of the seed light in medium pool three (23).
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| CN110459950A (en) * | 2019-09-25 | 2019-11-15 | 深圳市杰普特光电股份有限公司 | It can cascade laser travelling-wave amplifier |
| CN113991407B (en) * | 2021-10-28 | 2023-08-08 | 河北工业大学 | Brillouin amplification beam combining method and device with controllable output transverse field |
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