CN201118092Y - Multipath combined beam optical fiber laser - Google Patents
Multipath combined beam optical fiber laser Download PDFInfo
- Publication number
- CN201118092Y CN201118092Y CNU2007201260529U CN200720126052U CN201118092Y CN 201118092 Y CN201118092 Y CN 201118092Y CN U2007201260529 U CNU2007201260529 U CN U2007201260529U CN 200720126052 U CN200720126052 U CN 200720126052U CN 201118092 Y CN201118092 Y CN 201118092Y
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- Prior art keywords
- fiber laser
- prism
- optical fiber
- lens
- beam combination
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Abstract
The utility model relates to a multi-beam fiber laser. The multi-beam fiber laser provided by the utility model comprises a fiber laser, a prism, a lens, a coupling lens and a collimating beam-shrinking system, which is characterized in that: the fiber laser is arranged symmetrically on the two sides of the prism; the reflector of the prism is arranged on the incident optical path of the fiber laser; the lens is arranged on the reflected optical path of the prism; the coupling lens is arranged on the emergent optical path of the lens; the incident plane of the coupling lens is overlapped with the focal plane of the lens; the collimating beam-shrinking system is arranged on the emergent optical path of the coupling lens. The multiple fiber laser provided by the multi-beam fiber laser combines the beam of a plurality of lasers into one beam of the peak value on the central transmission axle, and combines the beam into big-power laser to be output.
Description
Technical field
The utility model relates to beam laser, especially a kind of multiplex beam combination optical fiber laser that uses the multiplex beam combination technology to realize high power output.
Background technology
That fiber laser has is simple in structure, thermal diffusivity good, conversion efficiency is high, stable performance, beam quality advantages of higher, and high-capacity optical fiber laser can be widely used in fields such as industrial processes, national defence, space communication.Though the power output of simple optical fiber laser has now realized more than 2,000 watt level, also far can not satisfy the specific (special) requirements in some field.Because high power laser light is to the restriction of the hot light injury problem of optical fiber, the beam combination technology of development multichannel light beam is to realize more high-output power, particularly the only way of myriawatt level fiber laser.
Prior art is [referring to technology Appl.Phys.Lett.22 (2004) 4837-4839 formerly; Opt.Expr.14 (2004) 2721-2726] realized the relevant locking of two-way fiber laser.But there is following shortcoming in this technology:
Though 1, prior art has realized the phase locking of two-way light beam, can only be used to observe coherent phenomena (coherent fringe), can not be that peak value is positioned at a branch of light on the central transmission axle with the two-way laser beam combination.
Though 2, prior art has realized the phase locking of two pairs of fiber lasers, can not realize many phase lockings to fiber laser, more can not become peak value to optical fiber laser group beam and be positioned at a branch of light on the central transmission axle many.
The utility model content
The utility model is for solving the above-mentioned technical problem that exists in the background technology, and provide a kind of beam combination of realizing many to optical-fiber laser, making manyly becomes peak value to optical fiber laser group beam and is positioned at a branch of light on the central transmission axle, and beam combination becomes the multiplex beam combination optical fiber laser of high power laser output.
Technical solution of the present utility model is: the utility model is a kind of multiplex beam combination optical fiber laser, its special character is being: this multiplex beam combination optical fiber laser comprises fiber laser, prism, lens, coupling mirror, the collimation beam system that contracts, fiber laser is symmetricly set on the prism both sides, the reflecting surface of prism is arranged on the input path of fiber laser, and lens are arranged on the reflected light path of prism; The emitting light path of lens is provided with coupling mirror, and the plane of incidence of coupling mirror overlaps with the focal plane of lens, and the emitting light path of coupling mirror is provided with and collimates the beam system that contracts.
Above-mentioned fiber laser is two or more.
Above-mentioned prism is right-angle prism, right angle polyhedral prism or diameter circle cone prism.
The distance of said lens and fiber laser exit facet is the focal length of lens.
All be coated with on the reflecting surface of above-mentioned prism the high anti-film of laser.
The plane of incidence of above-mentioned coupling mirror is coated with the film that laser is had certain reflectivity.
The reflectivity of above-mentioned film is 5%-15%.
The exit facet of above-mentioned coupling mirror is coated with the high saturating film of laser.
Said lens is a fourier transform lens.
Above-mentioned coupling mirror is average output coupling mirror.
The utility model utilizes fourier transform technique (being called again sometimes in the prior art: from imaging chamber technology) to realize each coherent beam combination to optical-fiber laser; Accurately control each spatial distribution to light beam, make each to laser about the central transmission axial symmetry, thereby realize each coherent beam combination to optical-fiber laser, their transmission backs form peak value and are positioned at a branch of light on the central transmission axle in the far field, and therefore different central transmission axle coincidences to laser realize different incoherent beam combinations to laser naturally.The utility model is simple in structure, and favorable expandability is easy to realize powerful laser output.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment one;
Fig. 2 is the structural representation of the utility model embodiment two.
Embodiment
Referring to Fig. 1, this figure is the structural representation of the fiber laser in the utility model embodiment one structure when being two, and a1, b1 are two same kind fiber lasers, a and b are respectively their laser emitting surface, the laser A1 and the B1 of a pair of relative transmission that they send.1 is right-angle prism, and fiber laser a1 and b1 place with respect to right-angle prism 1 symmetry.Two reflectings surface 11 of right- angle prism 1 and 12 all are coated with laser λ reflectivity greater than 99% high-reflecting film, and laser A1 and B1 become the laser A2 and the B2 of pair of parallel transmission after prism 1 reflection.2 for focal length is the fourier transform lens of f=250mm, and fourier transform lens 2 is f apart from the distance of laser emitting surface a and b.Laser A2 and B2 are a pair of convergent laser A3 and B3 after lens 2 poly-penetrating.3 is average output coupling mirror, and 31 faces of average output coupling mirror 3 are coated with has certain reflectivity (such as 5%, 10% to laser, 15% etc., this embodiment is 10%) film, 32 faces are coated with laser λ transmissivity greater than 99% high transmittance film, 31 focal planes with lens 2 overlap.Laser A3 and B3 realize the mutual injection of fiber laser a1 and b1 after average output coupling mirror 3 partial reflections, thereby realize the phase locking of two-way light beam.Laser A3 and B3 are respectively A4 and B4 through the transmitted light of average output coupling mirror 3, collimate the beam system 4 that contracts and are used for laser A4 and B4 collimation are collimated light beam A5 and B5, dwindle the distance between them simultaneously.Collimate the beam system 4 that contracts and be made of three lens, the focal distance f of three lens is respectively f1=100mm among this embodiment, f2=250mm, f3=25mm, after space transmission, converge with regard to produce power like this, become peak value and be positioned at a branch of smooth C on the transmission axle center O O ' at far-field laser A5 and B5.
Referring to Fig. 2, this figure is that the fiber laser in the utility model embodiment two structures is 3 schematic diagrames to (six) fiber laser, their emitted light beams are through right-angle prism 1 recited above, behind fourier transform lens 2 and the average output coupling mirror 3, realize a1 and b1 respectively, a2 and b2, the phase locking of a3 and three pairs of lasers of b3, these three pairs of fiber laser emitted laser become three pairs of parallel coherent lights after collimation contracts beam system 4, the parallel coherent light of this three couple is after the transmission of space, becoming three beams becomes peak value and is positioned at three-beam C1 on the transmission axle center O O ', C2 and C3, they overlap each other, thereby realize incoherent beam combination.
If prism 1 uses right angle multiaspect (2N face in the utility model, N is an integer) the body prism, can on a plurality of, arrange expand to many to fiber laser system, and make many on the coplanar not to the laser behind the fiber ring laser system beam combination all along central transmission axle OO ' transmission, can the number of beam combination optical fiber laser expand in the example structure N doubly.
If prism 1 uses the diameter circle cone prism in the utility model, utilize same principle can realize being positioned at many beam combinations on the coplanar not to fiber laser.
Claims (10)
1, a kind of multiplex beam combination optical fiber laser, it is characterized in that: this multiplex beam combination optical fiber laser comprises fiber laser, prism, lens, coupling mirror, the collimation beam system that contracts, described fiber laser is symmetricly set on the prism both sides, the reflecting surface of described prism is arranged on the input path of fiber laser, and described lens are arranged on the reflected light path of prism; The emitting light path of described lens is provided with coupling mirror, and the plane of incidence of described coupling mirror overlaps with the focal plane of lens, and the emitting light path of described coupling mirror is provided with and collimates the beam system that contracts.
2, multiplex beam combination optical fiber laser according to claim 1 is characterized in that: described fiber laser is two or more.
3, multiplex beam combination optical fiber laser according to claim 1 and 2 is characterized in that: described prism is right-angle prism, right angle polyhedral prism or diameter circle cone prism.
4, multiplex beam combination optical fiber laser according to claim 3 is characterized in that: the distance of described lens and fiber laser exit facet is the focal length of lens.
5, multiplex beam combination optical fiber laser according to claim 4 is characterized in that: all be coated with on the reflecting surface of described prism the high anti-film of laser.
6, multiplex beam combination optical fiber laser according to claim 5 is characterized in that: the plane of incidence of described coupling mirror is coated with the film that laser is had certain reflectivity.
7, multiplex beam combination optical fiber laser according to claim 6 is characterized in that: the reflectivity of described film is 5%-15%.
8, multiplex beam combination optical fiber laser according to claim 6 is characterized in that: the exit facet of described coupling mirror is coated with the high saturating film of laser.
9, multiplex beam combination optical fiber laser according to claim 1 is characterized in that: described lens are fourier transform lens.
10, multiplex beam combination optical fiber laser according to claim 1 is characterized in that: described coupling mirror is average output coupling mirror.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201260529U CN201118092Y (en) | 2007-11-29 | 2007-11-29 | Multipath combined beam optical fiber laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201260529U CN201118092Y (en) | 2007-11-29 | 2007-11-29 | Multipath combined beam optical fiber laser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201118092Y true CN201118092Y (en) | 2008-09-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201260529U Expired - Lifetime CN201118092Y (en) | 2007-11-29 | 2007-11-29 | Multipath combined beam optical fiber laser |
Country Status (1)
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| CN (1) | CN201118092Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101414053B (en) * | 2007-10-16 | 2012-02-01 | 中国科学院西安光学精密机械研究所 | Multiplex beam combination optical fiber laser |
| CN105467610A (en) * | 2015-12-07 | 2016-04-06 | 西北大学 | An all-polarization-maintaining fiber laser lattice generation apparatus used for a stimulated emission depletion (STED) microscope |
| CN106291950A (en) * | 2011-12-16 | 2017-01-04 | 应用材料公司 | Beam multiplex combiner for laser processing apparatus |
-
2007
- 2007-11-29 CN CNU2007201260529U patent/CN201118092Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101414053B (en) * | 2007-10-16 | 2012-02-01 | 中国科学院西安光学精密机械研究所 | Multiplex beam combination optical fiber laser |
| CN106291950A (en) * | 2011-12-16 | 2017-01-04 | 应用材料公司 | Beam multiplex combiner for laser processing apparatus |
| CN105467610A (en) * | 2015-12-07 | 2016-04-06 | 西北大学 | An all-polarization-maintaining fiber laser lattice generation apparatus used for a stimulated emission depletion (STED) microscope |
| CN105467610B (en) * | 2015-12-07 | 2017-10-03 | 西北大学 | For the fine laser dot-matrix generation device of the microscopical full polarization of stimulated emission depletion |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20080917 Effective date of abandoning: 20071129 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20080917 Effective date of abandoning: 20071129 |