CN103744186B - A kind of beam shaping system of laser diode linear array/area array - Google Patents
A kind of beam shaping system of laser diode linear array/area array Download PDFInfo
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- CN103744186B CN103744186B CN201410014563.6A CN201410014563A CN103744186B CN 103744186 B CN103744186 B CN 103744186B CN 201410014563 A CN201410014563 A CN 201410014563A CN 103744186 B CN103744186 B CN 103744186B
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 120
- 238000003491 array Methods 0.000 claims description 6
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Abstract
Embodiments provide a kind of beam shaping system of laser diode linear array/area array, the efficient coupling that can realize high power laser diode linear array/face battle array exports, structure is simple, be easy to produce; Described beam shaping system comprises the collimation lens of the light output end being positioned at laser diode linear array/area array, the beam shaping being positioned at the light output end of described collimation lens, the beam integrators be connected with the light output end of described beam shaping and the coupled fiber be connected with the light output end of described beam integrators; Wherein, described collimation lens is used for the laser of linear array/face battle array to carry out fast axis collimation; Described beam shaping is used for the beam shaping after by collimation and resets; Described beam integrators is used for the light beam after shaping being reset and focuses on; Described coupled fiber is used for the light beam after by focusing and exports; For the coupling output of high power laser diode linear array/face battle array.
Description
Technical field
The present invention relates to optical communication field, particularly relate to a kind of beam shaping system of laser diode linear array/area array.
Background technology
High power laser diode linear array/face battle array has developed into a relatively ripe stage, can be widely used in the every field such as optical communication, semiconductor laser, solid state laser, fiber laser, material processed, medical and beauty treatment, Aero-Space, military affairs; , line width high by means of its electro-optical efficiency, stable and reliable for performance, volume is little, quality is light, easily modulation, the advantage such as easy of integration, attract the concern of people all the time.
But, based on the special construction of laser diode linear array/area array, (quick shaft direction is about 40 ° very greatly to make the angle of divergence of its output beam, slow-axis direction is about 10 °), astigmatism is serious, and beam quality on fast and slow axis direction is widely different, be difficult to be focused into little and hot spot that is circle by common beam shaping system; The characteristic of this output beam determines nearly all application and all first must carry out shaping, focusing to its output beam.
For the problems referred to above, various beam shaping technology emerges in an endless stream.The beam shaping system of current main flow is divided three classes:
The first kind, micro optical array device transmission-type beam shaping system and micro optical array device reflected light beams orthopedic systems; These two kinds of orthopedic systems are all split by the output beam of laser diode linear array/area array, and then will the secondary Beam rotation formed be split and rearrange, beam parameter product on fast and slow axis direction is reached unanimity, to improve fill factor, curve factor and the beam quality of output beam.
Equations of The Second Kind, diffractive-optical element beam shaping system; This orthopedic systems utilizes binary optical elements or microgratings array, carries out diffraction shaping and conversion to light beam.
3rd class, non-imaged element beam orthopedic systems; Light beam integration, by the conduit of Diameter Gradual Change form, directly focuses on, the light beam on fast and slow axis direction is intercoupled, to reach the object that shaping exports by this orthopedic systems.
The optical system that front two class beam shaping systems need design complicated, and very high to the making accuracy requirement of optical element.Utilize non-imaged element to carry out beam shaping focusing for the 3rd class, simple and practical, focal beam spot, generally in millimeter magnitude, compares the pumping being applicable to solid state laser.But in manufacturing process, need to carry out surface treatment with optical grinding and polishing lathe, thus add the difficulty of making and the cost of whole beam shaping system.
Summary of the invention
Embodiments of the invention provide a kind of beam shaping system of laser diode linear array/area array, and the efficient coupling that can realize high power laser diode linear array/face battle array exports, structure is simple, be easy to production.
For achieving the above object, embodiments of the invention adopt following technical scheme:
There is provided a kind of beam shaping system of laser diode linear array/area array, described beam shaping system comprises the collimation lens of the light output end being positioned at laser diode linear array/area array, the beam shaping being positioned at the light output end of described collimation lens, the beam integrators be connected with the light output end of described beam shaping and the coupled fiber be connected with the light output end of described beam integrators; Wherein, described collimation lens is used for the laser of linear array/face battle array to carry out fast axis collimation; Described beam shaping is used for the beam shaping after by collimation and resets; Described beam integrators is used for the light beam after shaping being reset and focuses on; Described coupled fiber is used for the light beam after by focusing and exports.
Optionally, described beam shaping is quartz cone array beams reshaper; Described quartz cone array beams reshaper comprises multiple taper quartz pushrod; Two bottom surfaces of each described taper quartz pushrod are disc, and the area near the first bottom surface of described collimation lens is greater than the area of the second bottom surface near described beam integrators; Wherein, the first bottom surface of all described taper quartz pushrods is along " one " font close-packed arrays, and the pattern that the second bottom surface of all described taper quartz pushrods is formed is circle symmetrical pattern.
Further alternative, described quartz cone array beams reshaper comprises 7 taper quartz pushrods; Wherein, the pattern that the second bottom surface of described 7 taper quartz pushrods is formed is symmetrical " quincunx " pattern of compact arranged circle.
Further, the length of described taper quartz pushrod is 100-200mm; The diameter of the first bottom surface of described taper quartz pushrod is 1-2mm, and the diameter of the second bottom surface of described taper quartz pushrod is 0.3-0.33mm.
Optionally, along the light output direction of described collimation lens, the projection of the first bottom surface of all described taper quartz pushrods covers the projection of described collimation lens completely.
Further, the spacing that described quartz is bored between the light input end of array beams reshaper and the light output end of described collimation lens is 0.1-1mm.
Optionally, described beam integrators is quartz cone beam integrators; Two bottom surfaces of described quartz cone beam integrators are disc, and the area near the 3rd bottom surface of described beam shaping is greater than the area of the 4th bottom surface near described coupled fiber; Wherein, the 3rd bottom surface of described quartz cone beam integrators fits tightly with the light output end of described beam shaping and mutually mates.
Further alternative, the length of described quartz cone beam integrators is 100-200mm; The diameter of the 3rd bottom surface of described quartz cone beam integrators is 0.9-1mm, and the diameter of the 4th bottom surface of described quartz cone beam integrators is 0.125-0.2mm.
Optionally, described coupled fiber is pure silica fibre; Wherein, described pure silica fibre and described beam integrators are welded together; The light input end of described pure silica fibre and the light output end of described beam integrators match.
Further alternative, the diameter of described pure silica fibre is 0.125-0.2mm.
The embodiment of the present invention provides a kind of beam shaping system of laser diode linear array/area array, and described beam shaping system comprises the collimation lens of the light output end being positioned at laser diode linear array/area array, the beam shaping being positioned at the light output end of described collimation lens, the beam integrators be connected with the light output end of described beam shaping and the coupled fiber be connected with the light output end of described beam integrators; Wherein, described collimation lens is used for the laser of linear array/face battle array to carry out fast axis collimation; Described beam shaping is used for the beam shaping after by collimation and resets; Described beam integrators is used for the light beam after shaping being reset and focuses on; Described coupled fiber is used for the light beam after by focusing and exports.
Like this, the laser of multi beam linear array/face battle array that described laser diode linear array/area array exports can form the laser beam of strip after the major axis collimation of described collimation lens, the laser beam of this strip can be integrated into the laser beam of cluster circle after the shaping of described beam shaping is reset, the laser beam of this cluster circle just can be coupled into optical fiber after the focusing of described beam integrators, thus forms single beam laser.Obtain because described single beam laser carries out shaping by the laser of the Multibeam Array arrangement exported described laser diode linear array/area array, therefore its brightness is very high; That is, through above-mentioned beam shaping system, the laser coupled that just can realize the linear array/face battle array described laser diode linear array/area array exported is powerful single beam laser, and this beam shaping system not only has higher optical output power, and structure simple, be easy to produce.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The schematic diagram of the beam shaping system of a kind of laser diode linear array/area array that Fig. 1 provides for the embodiment of the present invention;
The structural representation of a kind of quartz cone array beams reshaper that Fig. 2 (a) and 2 (b) provide for the embodiment of the present invention;
The structural representation of a kind of quartz pushrod that Fig. 3 (a) and 3 (b) provide for the embodiment of the present invention.
Reference numeral:
10-laser diode linear array/area array; 20-collimation lens; 30-(quartz cone array) beam shaping; 300-taper quartz pushrod; 301-first bottom surface; 302-second bottom surface; 40-(quartz cone) beam integrators; 50-coupled fiber/pure silica fibre.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the present invention provides a kind of beam shaping system of laser diode linear array/area array, as shown in Figure 1, described beam shaping system comprises the collimation lens 20 of the light output end being positioned at laser diode linear array/area array 10, the beam shaping 30 being positioned at the light output end of described collimation lens 20, the beam integrators 40 be connected with the light output end of described beam shaping 30 and the coupled fiber 50 be connected with the light output end of described beam integrators 40; Wherein, described collimation lens 20 is for carrying out fast axis collimation by the laser of linear array/face battle array; Described beam shaping 30 is for resetting the beam shaping after collimation; Described beam integrators 40 is for focusing on the light beam after shaping rearrangement; Described coupled fiber 50 is for exporting the light beam after focusing.
It should be noted that, first, described beam shaping system is used for carrying out shaping to the output beam of described laser diode linear array/area array 10, the laser of the multi beam linear array/face battle array exported to make described laser diode linear array/area array 10, by after this beam shaping system, can be coupled and become powerful single beam laser.Here, concrete restriction is not done to the type of described laser diode linear array/area array 10.
Wherein, when described beam shaping system is used for carrying out shaping to the output beam of described laser diode linear array 10, the light input end of described collimation lens 20 is corresponding with the multiple laser be arranged in array, for carrying out fast axis collimation to the described multiple laser be arranged in array; When described beam shaping system is used for carrying out shaping to the output beam of described continuous laser diode planar array 10, the light input end of described collimation lens 20 is corresponding with the multiple laser of arranging in matrix, for carrying out fast axis collimation to the multiple laser of the described arrangement in matrix.
Second, described collimation lens 20 is arranged near the light output end of described laser diode linear array/area array 10, for carrying out fast axis collimation to the laser of linear array/face battle array, therefore, the light input end of described collimation lens 20 should be corresponding with the light output end of described laser diode linear array/area array 10; Namely, described collimation lens 20 is arranged in the light path of the output beam of described laser diode linear array/area array 10, and along the direction of output beam, the projected area of the light input end of described collimation lens 20 needs the projected area that can cover the light output end of described laser diode linear array/area array 10 completely.
Here, the shape of described collimation lens 20 can be semi-cylindrical, and described half-terete surface can be made up of relative rectangle plane and arc surface.Wherein, the optical input surface of described collimation lens 20 is rectangle plane, and the light gasing surface of described collimation lens 20 is arc surface; Or the optical input surface of described collimation lens 20 is arc surface, the light gasing surface of described collimation lens 20 is rectangle plane; In these cases, the minor face of described rectangle plane is parallel with the quick shaft direction of described laser diode linear array 10.
Certainly, described collimation lens 20 can also be cylindric, and now the optical input surface of described collimation lens 20 and light gasing surface are arc surface.
No matter the form of described collimation lens 20 is any of above-mentioned situation, all needs to ensure that the luminous point of described laser diode is in the focal position of described collimation lens 20, thus can carry out fast axis collimation to the laser beam of described linear array/face battle array.
3rd, described beam shaping 30 for the beam shaping after collimation is reset, with by through the circular light beam of strip laser beam merging of described collimation lens 20; That is, the shape of the light input end of described laser shaping device 30 need with described strip beam which matches, the shape of the light output end of described laser shaping device 30 need with described circular beam which matches.
4th, described beam integrators 40 is for focusing on the light beam after above-mentioned shaping rearrangement, therefore, described beam integrators 40 need be arranged in the light path of the light beam after this shaping rearrangement, and the light output end of the light input end of described beam integrators 40 and described beam shaping 30 closely attaches.Further, the light output end of described beam integrators 40 and the light input end of described coupled fiber 50 also need tight attaching.
5th, in order to avoid unnecessary energy loss, described beam shaping 30, described beam integrators 40 and described coupled fiber 30 preferably adopt identical material.The wavelength of the laser sent due to laser diode is usually at about 900nm, just the transparent window of quartz is positioned at (namely, can not be absorbed by quartz), therefore, described beam shaping 30, described beam integrators 40 and described coupled fiber 30 preferably adopt quartzy material, thus can prevent because laser to be produced the decay of brightness by absorbing.
The embodiment of the present invention provides a kind of beam shaping system of laser diode linear array/area array, and described beam shaping system comprises the collimation lens 20 of the light output end being positioned at laser diode linear array/area array 10, the beam shaping 30 being positioned at the light output end of described collimation lens 20, the beam integrators 40 be connected with the light output end of described beam shaping 30 and the coupled fiber 50 be connected with the light output end of described beam integrators 40; Wherein, described collimation lens 20 is for carrying out fast axis collimation by the laser of linear array/face battle array; Described beam shaping 30 is for resetting the beam shaping after collimation; Described beam integrators 40 is for focusing on the light beam after shaping rearrangement; Described coupled fiber 50 is for exporting the light beam after focusing.
Like this, the laser of multi beam linear array/face battle array that described laser diode linear array/area array 10 exports can form the laser beam of strip after the major axis collimation of described collimation lens 20, the laser beam of this strip can be integrated into the laser beam of cluster circle after the shaping of described beam shaping 30 is reset, the laser beam of this cluster circle just can be coupled into optical fiber after the focusing of described beam integrators 40, thus forms single beam laser.Obtain because described single beam laser carries out shaping by the laser of the Multibeam Array arrangement exported described laser diode linear array/area array 10, therefore its brightness is very high; That is, through above-mentioned beam shaping system, the laser coupled that just can realize the linear array/face battle array described laser diode linear array/area array 10 exported is powerful single beam laser, and this beam shaping system not only has higher optical output power, and structure simple, be easy to produce.
In embodiments of the present invention, will be specifically described for laser diode linear array.
Optionally, described beam shaping 30 is quartz cone array beams reshaper 30; As shown in Fig. 2 (a) He 2 (b), described quartz cone array beams reshaper 30 comprises multiple taper quartz pushrod 300; As shown in Fig. 3 (a) He 3 (b), two bottom surfaces of each described taper quartz pushrod 300 are disc, and the area near the first bottom surface 301 of described collimation lens 20 is greater than the area of the second bottom surface 302 near described beam integrators 40; Wherein, the first bottom surface 301 of all described taper quartz pushrods 300 is along " one " font close-packed arrays, and the pattern that the second bottom surface 302 of all described taper quartz pushrods 300 is formed is circle symmetrical pattern.
Wherein, described taper quartz pushrod 300 can be prepared by chemical corrosion method.
Here, the concrete number of the taper quartz pushrod 300 forming described quartz cone array beams reshaper 30 is not limited.
It should be noted that, because one end of described quartz cone array beams reshaper 30 is connected with described collimation lens 20, the other end is connected with described beam shaping 40, the laser beam of the strip collimated through major axis can be integrated into the laser beam of cluster circle; Therefore, form the first bottom surface 301 of the multiple described taper quartz pushrod 300 of described quartz cone array beams reshaper 30 preferably along " one " font close-packed arrays, so that receive the laser beam of described strip, the second bottom surface 302 forming the multiple described taper quartz pushrod 300 of described quartz cone array beams reshaper 30 preferably forms circle symmetrical pattern, so that form the laser beam of described circle.
In order to ensure the laser beam of the described strip that can receive completely through fast axis collimation, optionally, along the light output direction of described collimation lens 20, the projection of the first bottom surface 301 of all described taper quartz pushrods 300 should cover the projection of described collimation lens 20 completely.
Like this, along the light output direction of described collimation lens 20, the area of the light input end of described quartz cone array beams reshaper 30 just can be greater than the area of the light output end of described collimation lens 20, thus can receive the laser beam of described strip completely.
On this basis, further, the spacing that described quartz is bored between the light input end of array beams reshaper 30 and the light output end of described collimation lens 20 can be 0.1-1mm.
By reasonably arranging the distance between described quartz cone array beams reshaper 30 and described collimation lens 20, just the laser beam through the described strip of major axis collimation can be made to enter described quartz cone array beams reshaper 30 fully, thus unnecessary energy loss can be avoided.
Preferably, shown in figure 2 (b), described quartz cone array beams reshaper 30 comprises 7 taper quartz pushrods 300; Wherein, the pattern that the second bottom surface 302 of described 7 taper quartz pushrods 300 is formed is symmetrical " quincunx " pattern of compact arranged circle.
Wherein, symmetrical " quincunx " pattern of described circle is that the shape that the center of circle of these six rounded bottom surfaces is formed is regular hexagon by being positioned at a rounded bottom surface at center and forming along six rounded bottom surfaces of arranging symmetrically around it.
When the number of described taper quartz pushrod 300 is 7, symmetrical " quincunx " pattern of circle of the second bottom surface 302 formation of these 7 taper quartz pushrods 300 is a kind of shape of solid matter; Like this, when the laser beam of described strip resets the laser beam forming described circle through shaping, homogeneity and the closeness of its light are best.
On this basis, further preferably, the length of described taper quartz pushrod 300 can be 100-200mm; The diameter of the first bottom surface 301 of described taper quartz pushrod 300 is 1-2mm, and the diameter of the second bottom surface 302 of described taper quartz pushrod 300 is 0.3-0.33mm.
According to foregoing description, the shape that in symmetrical " quincunx " pattern of described circle, around the center of circle of six rounded bottom surfaces of arrangement is formed is regular hexagon, along these orthohexagonal three principal diagonal directions, and three rounded bottom surfaces of all arranging; Based on this, example, when the diameter of the second bottom surface 302 of described taper quartz pushrod 300 is 0.3mm, the pattern that the second bottom surface 302 of all described taper quartz pushrods 300 is formed can be considered as the circular pattern that diameter is about 0.9mm; That is, the pattern of the light output end of described quartz cone array beams reshaper 30 is circular patterns that a diameter is about 0.9mm.
It can thus be appreciated that, the light input end of described quartz cone array beams reshaper 30 is made up of the first bottom surface 301 along " one " font close-packed arrays 7 taper quartz pushrods 300, and the light output end of described quartz cone array beams reshaper 30 is made up of the second bottom surface 302 of 7 the taper quartz pushrods 300 forming symmetrical " quincunx " pattern of compact arranged circle.
Based on above-mentioned described quartz cone array beams reshaper 30 structure, when the laser beam of linear array is after the fast axis collimation of described collimation lens 20, just the light input end of described quartz cone array beams reshaper 30 can be entered completely, and carry out shaping rearrangement in described quartz cone array beams reshaper 30 inside, change conglobate laser beam by the laser beam of strip, then export from the light output end of described quartz cone array beams reshaper 30; Like this, through the laser beam of fast axis collimation when exporting from described quartz cone array beams reshaper 30, being transformed to circular laser beam, having focused on so that enter described beam integrators 40 completely.
Certainly, multiple described taper quartz pushrod 300 second bottom surface 302 form pattern can also be other pattern, but this pattern should have good symmetry and be closely arranged in one can coated all described taper quartz pushrods 300 the second bottom surface 302 circle in; Wherein, this circle should have minimum radius.
Optionally, described beam integrators 40 is quartz cone beam integrators 40; Two bottom surfaces of described quartz cone beam integrators 40 are disc, and the area near the 3rd bottom surface of described beam shaping 30 is greater than the area of the 4th bottom surface near described coupled fiber 50; Wherein, the 3rd bottom surface of described quartz cone beam integrators 40 fits tightly with the light output end of described beam shaping 30 and mutually mates.
Here, described quartz cone beam integrators 40 can be prepared by chemical corrosion method.
In addition, by optical adjusting bracket, described beam shaping 30 and described quartz cone beam integrators 40 can be fixed, closely attach to make described quartz cone the 3rd bottom surface of beam integrators 40 and the light output end of described beam shaping 30.
Further, the light input end of boring beam integrators 40 in order to the light output end and described quartz that make described quartz cone array beams reshaper 30 matches, and optionally, the length of described quartz cone beam integrators 40 is 100-200mm; The diameter of the 3rd bottom surface of described quartz cone beam integrators 40 is 0.9-1mm, and the diameter of the 4th bottom surface of described quartz cone beam integrators 40 is 0.125-0.2mm.That is, the laser beam through the described circle of shaping rearrangement focuses in the inside of described quartz cone beam integrators 40, thus can form the single beam laser that a beam diameter is 0.125-0.2mm.
Known based on foregoing description, when described beam shaping 30, described beam integrators 40 all adopt quartzy material, can prevent in beam shaping process because laser to be produced the decay of brightness by absorbing; On this basis, preferably, described coupled fiber 50 is pure silica fibre 50; Wherein, described pure silica fibre 50 is welded together with described beam integrators 40; The light input end of described pure silica fibre 50 and the light output end of described beam integrators 40 match.
In the case, the diameter of described pure silica fibre 50 can be 0.125-0.2mm.So just, the light output end of described beam integrators 40 and the light input end of described coupled fiber 50 can be made to match, when the laser beam of above-mentioned circle is after described beam integrators 40 completes focusing, just can form powerful single beam laser, and be coupled into optical fiber.
A specific embodiment is provided to be described described beam shaping system below.
Concrete, described beam shaping system comprises the collimation lens 20, quartz cone array beams reshaper 30, quartz cone beam integrators 40 and the pure silica fibre 50 that are arranged in order, for carrying out shaping to the output beam of described laser diode linear array 10.
Described collimation lens 20 is positioned at the light-emitting area front end of described laser diode linear array 10, and the luminous point of described laser diode linear array 10 is positioned at the focal position of described collimation lens 20; Described collimation lens 20 is semi-cylindrical, and its optical input surface is rectangle plane, and light gasing surface is arc surface, and the minor face of the optical input surface of described collimation lens 20 is parallel with the quick shaft direction of described laser diode linear array 10.
Described quartz cone array beams reshaper 30 is positioned at the light output end of described collimation lens 20, is made up of 7 taper quartz pushrods 300; The length of described taper quartz pushrod 300 is 100mm, and the diameter of the first bottom surface 301 of described taper quartz pushrod 300 is 1.5mm, and the diameter of the second bottom surface 302 of described taper quartz pushrod 300 is 0.3mm; First bottom surface 301 of described 7 taper quartz pushrods 300 is along " one " font close-packed arrays, and the second bottom surface 302 of described 7 taper quartz pushrods 300 forms symmetrical " quincunx " pattern of circle; Along the light output direction of described collimation lens 20, the projection of the first bottom surface 301 of described 7 taper quartz pushrods 300 covers the projection of described collimation lens 20 completely.
Spacing between the light input end of described quartz cone array beams reshaper 30 and the light output end of described collimation lens 20 is preferably as 0.5mm.
Described quartz cone beam integrators 40 is positioned at the light output end of described quartz cone array beams reshaper 30, and fits tightly with the light output end that array beams reshaper 30 bored by described quartz and mutually mate; Wherein, the length of described quartz cone beam integrators 40 is 150mm, and the diameter of the 3rd bottom surface of described quartz cone beam integrators 40 is 0.9mm, and the diameter of the 4th bottom surface of described quartz cone beam integrators 40 is 0.2mm.
The fibre diameter of described pure silica fibre 50 is 0.2mm; Wherein, described pure silica fibre 50 and described quartz are bored beam integrators 40 and are welded together.
By above-mentioned syndeton, just constitute the beam shaping system of described laser diode linear array.
The laser of the Multibeam Array that described laser diode linear array 10 exports can form the laser beam of strip after the major axis collimation of described collimation lens 20; The laser beam of this strip can be integrated into the laser beam of cluster circle after the shaping of described quartz cone array beams reshaper 30 is reset, and the diameter of the laser beam of described circle is about 0.9mm; The laser beam of this cluster circle forms the single beam laser that diameter is 0.2mm after the focusing of described quartz cone beam integrators 40; This single beam laser is coupled into the pure silica fibre 50 that diameter is 0.2mm, thus completes the coupling output of high power laser diode linear array 10.
Described single beam laser due to coupling output carries out shaping by the laser of the Multibeam Array arrangement exported described laser diode linear array 10 and obtains, and therefore its brightness is very high; That is, through above-mentioned beam shaping system, the laser coupled that just can realize the array arrangement described laser diode linear array 10 exported is powerful single beam laser, and this beam shaping system not only has higher optical output power, and structure simple, be easy to produce.
It should be noted that, although the embodiment of the present invention is specifically described with the example that is shaped as of laser diode linear array output beam, the present invention is equally applicable to the shaping of continuous laser diode planar array output beam, does not repeat them here.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.
Claims (9)
1. the beam shaping system of a laser diode linear array/area array, it is characterized in that, described beam shaping system comprises the collimation lens of the light output end being positioned at laser diode linear array/area array, the beam shaping being positioned at the light output end of described collimation lens, the beam integrators be connected with the light output end of described beam shaping and the coupled fiber be connected with the light output end of described beam integrators;
Wherein, described collimation lens is used for the laser of linear array/face battle array to carry out fast axis collimation;
Described beam shaping is used for the beam shaping after by collimation and resets;
Described beam integrators is used for the light beam after shaping being reset and focuses on;
Described coupled fiber is used for the light beam after by focusing and exports;
Wherein, described beam shaping is quartz cone array beams reshaper;
Described quartz cone array beams reshaper comprises multiple taper quartz pushrod; Two bottom surfaces of each described taper quartz pushrod are disc, and the area near the first bottom surface of described collimation lens is greater than the area of the second bottom surface near described beam integrators;
Wherein, the first bottom surface of all described taper quartz pushrods is along " one " font close-packed arrays, and the pattern that the second bottom surface of all described taper quartz pushrods is formed is circle symmetrical pattern.
2. beam shaping system according to claim 1, is characterized in that, described quartz cone array beams reshaper comprises 7 taper quartz pushrods;
Wherein, the pattern that the second bottom surface of described 7 taper quartz pushrods is formed is symmetrical " quincunx " pattern of compact arranged circle.
3. beam shaping system according to claim 2, is characterized in that, the length of described taper quartz pushrod is 100-200mm;
The diameter of the first bottom surface of described taper quartz pushrod is 1-2mm, and the diameter of the second bottom surface of described taper quartz pushrod is 0.3-0.33mm.
4. beam shaping system according to claim 1, is characterized in that, along the light output direction of described collimation lens, the projection of the first bottom surface of all described taper quartz pushrods covers the projection of described collimation lens completely.
5. beam shaping system according to claim 1, is characterized in that, the spacing between the light input end of described quartz cone array beams reshaper and the light output end of described collimation lens is 0.1-1mm.
6. beam shaping system according to claim 1, is characterized in that, described beam integrators is quartz cone beam integrators;
Two bottom surfaces of described quartz cone beam integrators are disc, and the area near the 3rd bottom surface of described beam shaping is greater than the area of the 4th bottom surface near described coupled fiber;
Wherein, the 3rd bottom surface of described quartz cone beam integrators fits tightly with the light output end of described beam shaping and mutually mates.
7. beam shaping system according to claim 6, is characterized in that, the length of described quartz cone beam integrators is 100-200mm;
The diameter of the 3rd bottom surface of described quartz cone beam integrators is 0.9-1mm, and the diameter of the 4th bottom surface of described quartz cone beam integrators is 0.125-0.2mm.
8. beam shaping system according to claim 1, is characterized in that, described coupled fiber is pure silica fibre;
Wherein, described pure silica fibre and described beam integrators are welded together;
The light input end of described pure silica fibre and the light output end of described beam integrators match.
9. beam shaping system according to claim 8, is characterized in that, the diameter of described pure silica fibre is 0.125-0.2mm.
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| CN106707259B (en) * | 2016-12-06 | 2020-07-14 | 深圳市速腾聚创科技有限公司 | Laser radar and laser radar control method |
| CN107526177A (en) * | 2017-09-25 | 2017-12-29 | 深圳市皓龙激光设备有限公司 | A kind of laser facula apparatus for shaping and laser lamp with shaping optical fiber |
| CN112445005B (en) * | 2019-08-29 | 2023-08-11 | 深圳市中光工业技术研究院 | Laser light source and laser light source system |
| CN112666196A (en) * | 2019-10-16 | 2021-04-16 | 北航（四川）西部国际创新港科技有限公司 | Ray integration device |
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