CN205985740U - Four ways laser beam combining system - Google Patents
Four ways laser beam combining system Download PDFInfo
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- CN205985740U CN205985740U CN201620907486.1U CN201620907486U CN205985740U CN 205985740 U CN205985740 U CN 205985740U CN 201620907486 U CN201620907486 U CN 201620907486U CN 205985740 U CN205985740 U CN 205985740U
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Abstract
The utility model discloses a four ways laser beam combining system, the system includes four laser instruments, six polarization apparatuss, six analysers, two doubling of frequency modules and two wave filters, through the position that sets up each polarization apparatus, analyser, reaches and closes the purpose of restrainting with four ways light. The utility model discloses the mechanism is compact to the systematic comparison is simple, and easy to operate and there is not energy loss, can realize the output of high peak power.
Description
Technical field
This utility model belongs to laser aid technical field, especially plants four road laser and closes beam system.
Background technology
Laser technology is twentieth century and one of atomic energy, quasiconductor and computer four inventions of great significance equally celebrated for their achievements.50
For many years, the laser technology based on laser instrument has obtained rapid development in China, has been widely used in commercial production, has led to
The every field such as news, information processing, health care, military affairs, cultural education and scientific research, achieve good economic benefit
And social benefit, more and more important effect will be played to national economy and social development.
Need multi-path laser to work in some specific application area, and need directivity to be consistent, sequential is controlled, for example
PIV, LIBS, LIDAR.Current market is most to be twin-channel laser, and with the raising of demand, twin-channel laser can not fully meet
Application demand, society is more and more stronger to the demand of multi-path laser light beam.
The optical theory in light and the linear interaction past of material is thought, the polarization intensity of medium and the field of incident light wave
It is directly proportional by force.Then, many parameters of material optical property are characterized, if refractive index, absorptance etc. are all unrelated with light intensity
Constant.Universal Experiments of Optics confirm, the light of single-frequency frequency by transparent medium after will not occur any change, different frequently
Will not be intercoupled between the light of rate effect.In short several years after laser appearance, it is observed that many is in the past
The unaccountable new effect of optical theory.In order to explain these new effects, create nonlinear optical theory.
Laser is extremely strong coherent light, and the universal light of aspect ratio is high tens times, the shadow to dielectric polorization for the field intensity high power item
Sound can not be ignored.Can be derived by Maxwell equation and act on interior nonlinear wave equations including light wave field intensity high order side item
Group.So, most of new optical phenomena can obtain the explanation of satisfaction.For example, if only considering the scalar form of quadratic term,
Then frequency is the light E=E of v0Sin (2 π vt) injects medium, has the composition being equivalent to two times of incident light frequency, phase in dielectric polorization
The light that frequency is 2v is just had to occur in the electromagnetic radiation answered.
Using quadratic nonlinearity effect under light laser effect for the nonlinear crystal, the laser that frequency is ω is made to pass through crystal
It is changed into the frequency doubled light that frequency is 2 ω, referred to as frequency doubling technology, or secondary harmonic generation (SHG) afterwards.As 1.06 microns of laser is passed through again
Frequency crystal, becomes 0.532 micron of green glow.Frequency doubling technology expands the wave band of laser, can obtain shorter wavelengths of laser.
It is referred to as frequency double laser with the device that nonlinear material produces double-frequency laser.Typically incident ground laser is called fundamental frequency
Light, is referred to as frequency doubled light or second harmonic by frequency double laser laser out.
According to Non-linear material properties, we typically mate to obtain second harmonic using angular phase.Angular phase
Join is to be compensated normal dispersion and reached a kind of method of phase matched using the birefringence of crystal.Make the fundamental frequency light of entrance crystal
With the frequency doubled light producing, there are different polarization states, and crystal used should be previously according to the theory of crystal optics and relevant refraction
Rate data, calculates the direction of sliced crystal, is milled into required form, makes fundamental frequency light and frequency multiplication luminous energy meet phase matched bar
Part.
Angle automatching mode can be divided into two classes by the polarization state according to incident fundamental wave again：A kind of is that fundamental wave takes single line inclined
Light (as o light) form of shaking is incident, and frequency multiplication ripple is the line polarized light (as e light) of another state, and this situation is normally referred to as I
Type-Ⅱphase matching.This frequency multiplication process is expressed as " o+o → e " with a formula, because the polarization direction of two fundamental waves is parallel,
So also known as run-in index non-colinear position.Another kind of situation is that fundamental wave takes two kinds of different line polarized lights (o light e light) form to enter simultaneously
Penetrate, that is, both polarization directions are perpendicular, and the frequency multiplication ripple producing is the line polarized light (as e light) of a single state, this
Situation the commonly referred to the IIth saphe coupling, is denoted as " e+o → e ".Because the IIth class matching way, in nonlinear polarization process
In, be not the component product of the simple o light (or e light) by fundamental wave in action, but o light and e light component in action simultaneously.
Beam system is closed for light beam and has been obtained for a lot of applications, but various conjunction Shu Fangfa differ although
The purpose closing bundle all can be reached eventually, the principle of the device but adopting and conjunction bundle simultaneously differs, such as Chinese invention patent
2006100444563 disclose a kind of four-path incoherent Co-beam MOPA laser system, and this system is to be divided light beam first
Shu Jing and end completely reflecting mirror is divided into the equal light of four tunnel intensity, then passes through single channel power amplifying system respectively, so
Afterwards through polarizing beam splitter mirror reflection polarized light direction of vibration perpendicular to the plane of incidence, through SBS wave distortion compensation and round trip
After amplification, then respectively through individual rotator respectively when four bundle laser polarization directions have a certain degree before closing bundle, in order to avoid respectively
Road light beam interferes in closing bundle additive process, is then passed through four end fully-reflected plane mirrors and reflexes on reflecting prism,
Again it is combined into light beam after propagating certain distance.This system can obtain the four non-phases of bundle by four road single channel power amplifying systems
Dry laser superposition closes bundle, but this system structure is comparatively more complicated.
Utility model content
For solving defect in prior art, this utility model provides a kind of four road laser to close beam system, and this mechanism is compact, does not have
There is energy loss, it is possible to achieve high-peak power exports.
For achieving the above object, this utility model provides following technical scheme：
A kind of four road laser close beam systems, described system include four laser instrument, six polarization apparatuss, six analyzers, two
Platform times frequency module and two wave filter, specially laser instrument A, laser instrument B, laser instrument C, laser instrument D, polarization apparatuss A, polarization apparatuss B,
Polarization apparatuss C, polarization apparatuss D, polarization apparatuss E, polarization apparatuss F, analyzer A, analyzer B, analyzer C, analyzer D, analyzer E, analyzing
Device F, frequency multiplication modules A, times frequency module B, wave filter A and wave filter B, described laser instrument A, laser instrument B, laser instrument C, laser instrument D
It is placed in parallel, described polarization apparatuss A and analyzer A is sequentially placed on the optical axis position of laser instrument A, described polarization apparatuss B, analyzer
B, frequency multiplication modules A, wave filter A, polarization apparatuss E and analyzer F are sequentially placed on the optical axis position of laser instrument B, and laser instrument A
The light sending just is mapped on analyzer B after passing sequentially through polarization apparatuss A and analyzer A, and analyzer A and analyzer B
Each corresponding sides are parallel to each other；Described polarization apparatuss D and analyzer D is sequentially placed on the optical axis position of laser instrument D, described polarization apparatuss
C, analyzer C, times frequency module B, wave filter B, polarization apparatuss F and analyzer F are sequentially placed on the optical axis position of laser instrument C, and
And the light that sends of laser instrument D pass sequentially through polarization apparatuss D and analyzer D after be just mapped on analyzer C, and analyzer D and
Each corresponding sides of analyzer C are parallel to each other；Just it is mapped to analyzer F through the light of analyzer E, and analyzer E and analyzing
Each corresponding sides of device F are parallel to each other.
Preferably, adjustment polarization apparatuss A and polarization apparatuss D the anglec of rotation make light angle of incidence be Brewster angle, then when
When having a branch of directional light to incide on polarization apparatuss A or polarization apparatuss D, reflected light can be produced orthogonal with refraction light polarization direction
Situation, if reflected light is by the case of parallel polarization, refraction light is just by vertical polarization.
The beneficial effects of the utility model are：
1. the system is capable of four road laser coaxial outputs, does not have energy loss, it is possible to achieve high-peak power exports.
2. this utility model mechanism is compact, and systematic comparison is simple, easily operates.
Brief description
Fig. 1 is that this utility model four road laser closes beam system structural representation；
Fig. 2 is that utility model four road laser closes beam system operation principle schematic diagram.
In figure, 1- laser instrument A, 2- laser instrument B, 3- laser instrument C, 4- laser instrument D, 5- polarization apparatuss A, 6- polarization apparatuss
B, 7- polarization apparatuss C, 8- polarization apparatuss D, 9- polarization apparatuss E, 10- polarization apparatuss F, 11- analyzer A, 12- analyzer B, 13- examine
Device C partially, 14- analyzer D, 15- analyzer E, 16- analyzer F, 17- frequency multiplication modules A, 18- times of frequency module B, 19- filter
Ripple device A, 20- wave filter B.
Specific embodiment
It is more fully described specific embodiment of the utility model below with reference to accompanying drawings.Although showing this reality in accompanying drawing
With new specific embodiment it being understood, however, that may be realized in various forms this utility model and should not being illustrated here
Embodiment limited.On the contrary, these embodiments are provided to be able to be best understood from this utility model, and can be by
What scope of the present utility model was complete conveys to those skilled in the art.
If mentioned "comprising" in the middle of description in the whole text and claim or " inclusion " they are an open language, therefore should
It is construed to " comprise but be not limited to ".Description subsequent descriptions are to implement better embodiment of the present utility model, so described retouch
Stating is for the purpose of the rule of description, is not limited to scope of the present utility model.Protection model of the present utility model
Enclose to work as and be defined depending on the defined person of claims.
A kind of four road laser close beam system, as shown in figure 1, described system includes laser instrument A 1, laser instrument B 2, laser instrument
C 3, laser instrument D 4, polarization apparatuss A 5, polarization apparatuss B 6, polarization apparatuss C 7, polarization apparatuss D 8, polarization apparatuss E 9, polarization apparatuss F 10, inspection
Partially device A 11, analyzer B 12, analyzer C 13, analyzer D 14, analyzer E 15, analyzer F 16, frequency multiplication modules A 17,
Times frequency module B 18, wave filter A 19 and wave filter B 20, described laser instrument A 1, laser instrument B 2, laser instrument C 3, laser instrument D
4 are placed in parallel, and described polarization apparatuss A 5 and analyzer A 11 is sequentially placed on the optical axis position of laser instrument A 1, described polarization apparatuss
B 6, analyzer B 12, frequency multiplication modules A 17, wave filter A 19, polarization apparatuss E 9 and analyzer F 16 are sequentially placed on laser instrument B
Optical axis position on, and the light that sends of laser instrument A 1 pass sequentially through polarization apparatuss A 5 and analyzer A 11 after be just mapped to inspection
On device B 12 partially, and each corresponding sides of analyzer A 11 and analyzer B 12 are parallel to each other；Described polarization apparatuss D 8 and analyzer
D 14 is sequentially placed on the optical axis position of laser instrument D 4, described polarization apparatuss C 7, analyzer 13, times frequency module B 18, filtering
Device B 20, polarization apparatuss F 10 and analyzer F 16 are sequentially placed on the optical axis position of laser instrument C 3, and laser instrument D 4
The light going out just is mapped on analyzer C 13 after passing sequentially through polarization apparatuss D 8 and analyzer D 14, and analyzer D14 and inspection
Each corresponding sides of device C 13 partially are parallel to each other；Just it is mapped to analyzer F 16 through the light of analyzer E 15, and analyzer E
15 and analyzer F 16 each corresponding sides are parallel to each other.
The operation principle of the system is as follows：
Laser instrument A, laser instrument B, laser instrument C, laser instrument D export the line polarized light of phase co-wavelength, and what laser instrument A exported swashs
Light is converted to orthogonal polarized light after polarization apparatuss A, acts on the light (laser A) that analyzer A can make laser instrument A send anti-
Penetrate.The laser of laser instrument B output is converted to horizontal polarization light after polarization apparatuss B, and acting on analyzer B can make laser instrument B send out
Light (laser B) transmission going out.Laser A and laser B realizes coaxial output at analyzer B, through frequency multiplication modules A, laser A and swashing
Light B is converted to two bundle polarization state identical line polarized lights, filters fundamental frequency light via wave filter 1, retains frequency doubled light 1.
The laser of laser instrument D output is converted to orthogonal polarized light after polarization apparatuss D, and acting on analyzer D can make laser
Light (laser D) reflection that device D sends.The laser of laser instrument C output is converted to horizontal polarization light after polarization apparatuss C, acts on
Analyzer C can make light (laser c) transmission that laser instrument C sends.Laser D and laser c realize coaxial output, warp at analyzer C
Cross a times frequency module B, laser D and laser c are converted to two bundle polarization state identical line polarized lights, filter fundamental frequency light via wave filter B,
Retain frequency doubled light 2.
Frequency doubled light 1 switchs to horizontal polarization light via polarization apparatuss E, and frequency doubled light 2 switchs to orthogonal polarized light via polarization apparatuss F,
Reflect at analyzer E, at analyzer F, frequency doubled light 1 and frequency doubled light 2 are realized coaxially exporting, and are so achieved that No. four laser instrument
Frequency doubled light coaxially exports.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all this
Any modification, equivalent and simple modifications made in utility model flesh and blood etc., should be included in of the present utility model
Within protection domain.
Claims (2)
1. a kind of four road laser close beam system it is characterised in that described system includes laser instrument A, laser instrument B, laser instrument C, swashs
Light device D, polarization apparatuss A, polarization apparatuss B, polarization apparatuss C, polarization apparatuss D, polarization apparatuss E, polarization apparatuss F, analyzer A, analyzer B, analyzer
C, analyzer D, analyzer E, analyzer F, frequency multiplication modules A, times frequency module B, wave filter A and wave filter B, described laser instrument A, swash
Light device B, laser instrument C, laser instrument D are placed in parallel, and described polarization apparatuss A and analyzer A is placed sequentially in the optical axis position of laser instrument A
On, described polarization apparatuss B, analyzer B, frequency multiplication modules A, wave filter A, polarization apparatuss E and analyzer F are placed sequentially in laser instrument B's
On optical axis position, and the light that sends of laser instrument A pass sequentially through polarization apparatuss A and analyzer A after be just mapped on analyzer B,
And each corresponding sides of analyzer A and analyzer B are parallel to each other；Described polarization apparatuss D and analyzer D is sequentially placed on laser instrument D
Optical axis position on, described polarization apparatuss C, analyzer C, times frequency module B, wave filter B, polarization apparatuss F and analyzer F are sequentially placed on
On the optical axis position of laser instrument C, and the light that sends of laser instrument D pass sequentially through polarization apparatuss D and analyzer D after be just mapped to inspection
On device C partially, and each corresponding sides of analyzer D and analyzer C are parallel to each other；Just it is mapped to analyzing through the light of analyzer E
Device F, and each corresponding sides of analyzer E and analyzer F are parallel to each other.
2. four road laser according to claim 1 close beam system it is characterised in that adjusting the rotation of polarization apparatuss A and polarization apparatuss D
It is Brewster angle that gyration makes the angle of incidence of light.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620907486.1U CN205985740U (en) | 2016-08-19 | 2016-08-19 | Four ways laser beam combining system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620907486.1U CN205985740U (en) | 2016-08-19 | 2016-08-19 | Four ways laser beam combining system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107942529A (en) * | 2017-12-21 | 2018-04-20 | 北京镭宝光电技术有限公司 | Pulsewidth switches coaxially with polarization laser and coaxially with polarization laser output method |
| CN110426346A (en) * | 2019-08-02 | 2019-11-08 | 南京信息工程大学 | A kind of device for applying in libs adjust laser beam energy |
| CN113422282A (en) * | 2021-08-24 | 2021-09-21 | 中国工程物理研究院激光聚变研究中心 | Preparation method of all-fiber self-imaging laser beam combiner |
-
2016
- 2016-08-19 CN CN201620907486.1U patent/CN205985740U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107942529A (en) * | 2017-12-21 | 2018-04-20 | 北京镭宝光电技术有限公司 | Pulsewidth switches coaxially with polarization laser and coaxially with polarization laser output method |
| CN107942529B (en) * | 2017-12-21 | 2024-05-21 | 北京镭宝光电技术有限公司 | Pulse width switching coaxial co-polarized laser and coaxial co-polarized laser output method |
| CN110426346A (en) * | 2019-08-02 | 2019-11-08 | 南京信息工程大学 | A kind of device for applying in libs adjust laser beam energy |
| CN113422282A (en) * | 2021-08-24 | 2021-09-21 | 中国工程物理研究院激光聚变研究中心 | Preparation method of all-fiber self-imaging laser beam combiner |
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