CN215728973U - Shaping beam-combining optical module and blue light semiconductor laser - Google Patents
Shaping beam-combining optical module and blue light semiconductor laser Download PDFInfo
- Publication number
- CN215728973U CN215728973U CN202122005604.3U CN202122005604U CN215728973U CN 215728973 U CN215728973 U CN 215728973U CN 202122005604 U CN202122005604 U CN 202122005604U CN 215728973 U CN215728973 U CN 215728973U
- Authority
- CN
- China
- Prior art keywords
- array
- parallelogram
- glass
- glass plate
- lens
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Optical Couplings Of Light Guides (AREA)
Abstract
The application provides an optical module and blue light semiconductor laser that beam is closed in plastic relates to laser technical field, including the barre array light source, and set gradually parallel glass board array and focus coupling subassembly on the barre array light source propagation light path, the beam warp of barre array light source outgoing parallel glass board array shaping back, by focus coupling subassembly coupling gets into optic fibre, behind the coupling the beam form with the facula incidence that the terminal surface shape of optic fibre matches optic fibre. The light beam is subjected to non-uniform cutting by the parallel glass plate array, the light spot can be shaped to be approximately circular, and compared with the existing parallel glass plate array, the light spot is shaped to be square, and the light spot is shaped to be approximately circular, so that the light spot can be more favorably coupled to an optical fiber entering a circular end face, and the coupling efficiency is improved. And the numerical aperture of the optical fiber is fully utilized, and the optical fiber with smaller core diameter can be coupled under the same numerical aperture limit, so that the application range is expanded.
Description
Technical Field
The application relates to the technical field of lasers, in particular to an optical module and a blue-light semiconductor laser for shaping and beam combination.
Background
The blue-light semiconductor laser can directly emit blue light, has the advantages of simple structure, convenient use, high electricity-light conversion efficiency and the like, and is mainly and widely applied to the industries of laser welding, color laser display, high-density storage, digital video technology, ocean water and ocean resource detection, laser refrigeration and the like. Among them, the high-power blue-light semiconductor laser occupies an important position in the field of laser welding.
However, when the current high-power blue-light semiconductor laser is coupled with an optical fiber, the coupling efficiency is low, so that the application of the high-power blue-light semiconductor laser is limited.
SUMMERY OF THE UTILITY MODEL
An object of the embodiment of the application is to provide an optical module and a blue light semiconductor laser that the beam is closed in plastic, can form the facula that matches with the optic fibre terminal surface shape to improve coupling efficiency.
One aspect of the embodiments of the present application provides an optical module for shaping and combining a beam, including a bar array light source, and a parallel glass plate array and a focusing coupling component which are sequentially disposed on a transmission light path of the bar array light source, wherein a light beam emitted from the bar array light source is coupled into an optical fiber by the focusing coupling component after being shaped by the parallel glass plate array, and the coupled light beam forms a light spot matched with the end surface shape of the optical fiber and enters the optical fiber.
Optionally, the parallel glass plate array includes a first parallel glass plate array and a second parallel glass plate array sequentially arranged along the propagation light path, the first parallel glass plate array is used for cutting the slow axis direction of the light beam and generating longitudinal displacement, and the second parallel glass plate array is used for generating transverse displacement to the cut light beam and compressing the slow axis width of the light beam.
Optionally, the first array of parallel glass sheets comprises a plurality of first glass sheet combinations arranged in a stack, each first glass sheet combination comprises a plurality of first parallelogram glass sheets, and the number of first parallelogram glass sheets in the first glass sheet combination located in an intermediate layer is less than the number of first parallelogram glass sheets in the first glass sheet combination located in an outer layer.
Optionally, in the first glass plate combination, the inclination angles of the first parallelogram glass plates are different, and the widths of the first parallelogram glass plates are equal along the arrangement direction of the first parallelogram glass plates.
Optionally, the second parallel glass plate array includes a plurality of second glass plate combinations arranged in a stacked manner, each second glass plate combination includes a plurality of second parallelogram glass plates arranged in a stacked manner, the number of layers of the plurality of first glass plate combinations is the same as that of the plurality of second glass plate combinations, and the number of first parallelogram glass plates in each first glass plate combination is the same as that of the second parallelogram glass plates in each second glass plate combination.
Optionally, the inclination angles of the plurality of second parallelogram glass plates are different, and the thickness of the plurality of second parallelogram glass plates is equal along the stacking direction of the plurality of second parallelogram glass plates; the second parallelogram glass plates located in the middle layer have a density less than the density of the second parallelogram glass plates located in the outer layers.
Optionally, a first lens array is further disposed between the bar array light source and the parallel glass plate array, one surface of the first lens array facing the bar array light source is a plane, one surface facing away from the bar array light source is an aspheric surface, a bus of the first lens array is perpendicular to a first direction, and the first direction is a direction of a bar array light source propagation light path.
Optionally, a second lens array is further disposed between the first lens array and the parallel glass plate array, one surface of the second lens array facing the bar array light source is a plane, one surface of the second lens array facing away from the bar array light source is a spherical surface, and a bus of the first lens array is parallel to the first direction.
Optionally, the focusing coupling component includes a third lens, a fourth lens and a fifth lens, which are sequentially disposed along the propagation light path, where the third lens and the fourth lens are used for compressing the light beam in the fast axis direction, and the fifth lens is used for focusing.
In another aspect of the embodiments of the present application, a blue semiconductor laser is provided, including: in the beam shaping and combining optical module, the bar array light source of the beam shaping and combining optical module is a blue light bar array.
The optical module and the blue light semiconductor laser that the beam was closed in plastic that this application embodiment provided, the light beam is emergent to the array light source of the barre, and the light beam is through parallel glass board array and focusing coupling subassembly in proper order, and parallel glass board array carries out the plastic with the light beam to form the facula that matches with the terminal surface shape of optic fibre, gets into the optic fibre through focusing coupling subassembly again. This application utilizes parallel glass board array to carry out inhomogeneous cutting with the light beam, can be close to the facula plastic for circular, compares in current parallel glass board array with the facula plastic for square, this application is the facula plastic for being close circular more to be favorable to the optical fiber of coupling entering circular terminal surface to improve coupling efficiency. And the numerical aperture of the optical fiber is fully utilized, and the optical fiber with smaller core diameter can be coupled under the same numerical aperture limit, so that the application range is expanded.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of an optical module for shaping and combining beams according to the present embodiment;
FIG. 2 is a schematic structural diagram of a first parallel glass plate array of the beam shaping and combining optical module provided in this embodiment;
FIG. 3 is a schematic structural diagram of a second parallel glass plate array of the beam shaping and combining optical module provided in this embodiment;
FIG. 4 is a light spot diagram of the beam shaping and combining optical module of the present embodiment after passing through the first parallel glass plate array;
FIG. 5 is a light spot diagram of the beam shaping and combining optical module of the present embodiment after passing through the second parallel glass plate array;
fig. 6 is a light spot diagram of the beam shaping and combining optical module provided in this embodiment after passing through the third lens and the fourth lens;
fig. 7 is a speckle pattern of the beam shaping and combining optical module provided in this embodiment after passing through the fifth lens.
Icon: 1-a bar array light source; 2-a first lens array; 3-a second lens array; 4-a first array of parallel glass plates; 40. 40a, 40b, 40c, 40d, 40 e-first glass plate combination; 401-a first parallelogram glass plate; 5-a second array of parallel glass plates; 50. 50a, 50b, 50c, 50d, 50 e-second glass plate combination; 501. 502, 503, 504, 505, 506, 507, 508, 509, 510, 511, 512, 513, 514, 515, 516, 517, 518, 519-a second parallelogram-shaped glass plate; 6-a third lens; 7-a fourth lens; 8-a fifth lens; f1 — first direction; f2 — second direction; a-inclination angle; d-width; t-thickness.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.
In the description of the present application, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the application usually place when using, and are only used for convenience in describing the present application and simplifying the description, but do not indicate or imply that the devices or elements that are referred to must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
It should also be noted that, unless expressly stated or limited otherwise, the terms "disposed" and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Referring to fig. 1, an embodiment of the present application provides an optical module for shaping and combining beams, including: the optical fiber comprises a bar array light source 1, and a parallel glass plate array and a focusing coupling component which are sequentially arranged on a propagation light path of the bar array light source 1, wherein light beams emitted by the bar array light source 1 are shaped by the parallel glass plate array and then coupled into an optical fiber by the focusing coupling component, and the coupled light beams form light spot incident optical fibers matched with the end surface shape of the optical fiber.
The light source can specifically adopt a blue light bar array light source 1, and the blue light bars are arranged at equal intervals to form a blue light bar array. The blue light bars are used as light sources, so that the light beam density is high, the shaping steps are few, the installation is convenient, and the power is higher.
And a parallel glass plate array and a focusing coupling assembly are sequentially arranged on a light source transmission light path, wherein the parallel glass plate array is used for shaping light beams emitted by the bar array light source 1, and the focusing coupling assembly is used for combining and coupling the shaped light beams and enabling the light beams to enter optical fibers for application.
Parallel glass board array has refraction skew effect to the light beam, and this application has solved the big difficult problem of the axis light beam quality phase difference of the speed of a barre light source through adopting parallel glass board array.
According to the optical module for shaping and combining the beams, the light beam is emitted from the bar array light source 1, the light beam sequentially passes through the parallel glass plate array and the focusing coupling assembly, the parallel glass plate array shapes the light beam to form a light spot matched with the shape of the end face of the optical fiber, and then the light spot enters the optical fiber through the focusing coupling assembly. This application utilizes parallel glass board array to carry out inhomogeneous cutting with the light beam, can be close to the facula plastic for circular, compares in current parallel glass board array with the facula plastic for square, this application is the facula plastic for being close circular more to be favorable to the optical fiber of coupling entering circular terminal surface to improve coupling efficiency. And the numerical aperture of the optical fiber is fully utilized, and the optical fiber with smaller core diameter can be coupled under the same numerical aperture limit, so that the application range is expanded.
Specifically, the parallel glass plate array comprises a first parallel glass plate array 4 and a second parallel glass plate array 5 which are sequentially arranged along a propagation light path, the first parallel glass plate array 4 is used for cutting the slow axis direction of the light beam and generating longitudinal displacement, and the second parallel glass plate array 5 is used for generating transverse displacement for the cut light beam and compressing the slow axis width d of the light beam.
The light beams emitted by the bar array light source 1 sequentially enter the first parallel glass plate array 4 and the second parallel glass plate array 5, the first parallel glass plate array 4 and the second parallel glass plate array 5 are used as a means for shaping the light beams, the first parallel glass plate array 4 mainly cuts the light beams in the slow axis direction and generates longitudinal displacement, and the second parallel glass plate array 5 mainly generates transverse displacement to the cut light beams and compresses the slow axis width d of the light beams. The light beam is subjected to non-uniform cutting through the parallel glass plate array, the light spot is shaped to be close to a circle, the light spot close to the circle is more favorable for being coupled into the optical fiber with the circular end face, the numerical aperture of the optical fiber is fully utilized, and the optical fiber with a smaller core diameter can be coupled into the optical fiber under the limitation of the same numerical aperture.
Further, the first array of parallel glass sheets 4 comprises a plurality of first glass sheet combinations 40 arranged in a stack, each first glass sheet combination 40 comprises a plurality of first parallelogram glass sheets 401, and the number of first parallelogram glass sheets 401 in the first glass sheet combination 40 positioned in the middle layer is smaller than the number of first parallelogram glass sheets 401 in the first glass sheet combination 40 positioned in the outer layer.
The first parallel glass plate array 4 includes a plurality of first glass plate assemblies 40, which are respectively a first glass plate assembly 40a, a first glass plate assembly 40b, a first glass plate assembly 40c, a first glass plate assembly 40d, and a first glass plate assembly 40e, and the plurality of first glass plate assemblies 40 are stacked, wherein each first glass plate assembly includes a plurality of first parallelogram glass plates 401, and the plurality of first parallelogram glass plates 401 are attached to each other in the arrangement direction. Further, since the inclination angles a of the plurality of first parallelogram glass plates 401 are different, a gap is formed between the plurality of first parallelogram glass plates 401 when they are attached to each other, and the widths d of the plurality of first parallelogram glass plates 401 are equal in the arrangement direction (second direction F2) of the plurality of first parallelogram glass plates 401.
It should be noted that, taking the first glass plate assembly 40a as an example, the first glass plate assembly 40a includes 5 first parallelogram glass plates 401, the inclination angle a of each first parallelogram glass plate 401 of the 5 first parallelogram glass plates 401 is different, and the condition that the inclination angles a are different also includes the condition that the inclination angles a are partially the same and partially different, for example, the inclination angles a of 4 first parallelogram glass plates 401 are all the same, the inclination angle a of 1 first parallelogram glass plate 401 is different from the inclination angle a of the other 4 first parallelogram glass plates 401, and the condition that the inclination angles a are different also includes the condition that the inclination angles a of 3 first parallelogram glass plates 401 are all the same, the inclination angles a of the other 2 first parallelogram glass plates 401 are the same or different, but the inclination angles a of the 3 first parallelogram glass plates 401 are different, and so on.
While the first glass sheet assemblies 40 of different layers may have the same inclination angle a, for example, the inclination angles a of the 5 first parallelogram glass sheets 401 in the first glass sheet assembly 40a are different, but at least one of the first parallelogram glass sheets 401 may have the same inclination angle a as at least one of the first parallelogram glass sheets 401 in the first glass sheet assembly 40b, although the inclination angles a may also be different. In the present application, only the first glass plate combination of the same layer is defined, the inclination angle a of the first parallelogram glass plate 401 is different, and the inclination angle a of the first glass plate combination 40 of different layers is not defined, and can be set by those skilled in the art according to actual needs. Similarly, in the first glass plate assembly 40 of the same layer, the width d of the first parallelogram glass plate 401 is the same, and the width d of the first glass plate assembly 40 of different layers is not limited.
This results in a multi-layer first glass sheet combination 40, wherein the number of first parallelogram-shaped glass sheets 401 in the first glass sheet combination 40 located in the middle layer of the multi-layer first glass sheet combination 40 is less than the number of first parallelogram-shaped glass sheets 401 in the first glass sheet combination 40 located in the outer layer. In one implementation of the present application, as shown in FIG. 2, three first parallelogram-shaped glass plates 401 are included in each of the first glass plate assemblies of the middle three layers, and five first parallelogram-shaped glass plates 401 are included in each of the first glass plate assemblies 40 of the top and bottom layers; it should be understood that fig. 2 only shows one case of the first parallel glass plate array 4, and is not the only limitation of the first parallel glass plate array 4 in the present application or the only solution that can be supported by the embodiment of the present application, as long as the first parallel glass plate array 4 satisfying the above conditions is within the protection scope of the present application. For example, the first array of parallel glass sheets 4 may further comprise four layers of the first glass sheet combination 40, and then five first parallelogram-shaped glass sheets 401 may be included in the middle two layers of the first glass sheet combination 40, and six first parallelogram-shaped glass sheets 401 may be included in the top and bottom layers of the first glass sheet combination 40; also for example, in the multi-layer first glass sheet combination 40 of the first array of parallel glass sheets 4, the number of first parallelogram-shaped glass sheets 401 in the top and bottom first glass sheet combinations 40 may also be different, the number of first parallelogram-shaped glass sheets 401 in the middle first glass sheet combination 40 may also be different, and so on. In addition, the number of the first parallelogram glass plates 401 in the first glass plate combination 40 of the intermediate layer is not limited to the sequential relationship, and may be stacked and arranged from large to small in a certain order, or stacked and arranged from small to large in a certain order, or randomly arranged in number and size, for example, the first glass plate combination 40b may include three first parallelogram glass plates 401, the first glass plate combination 40c may include four first parallelogram glass plates 401, and the first glass plate combination 40d may include two first parallelogram glass plates 401, which belongs to an example of random arrangement in number and size, and the example of sequential arrangement in number and size is not described in detail here, and it is reasonable to conclude that the number of the first parallelogram glass plates 401 in the first glass plate combination 40 of the intermediate layer is smaller than the number of the first parallelogram glass plates 401 in the first glass plate combination 40 of the outer layer, this is not illustrated here.
For the second parallel glass plate array 5, the second parallel glass plate array 5 comprises a plurality of second glass plate combinations 50 which are arranged in a stacking mode, each second glass plate combination 50 comprises a plurality of second parallelogram glass plates which are arranged in a stacking mode, the number of layers of the plurality of first glass plate combinations 40 is the same as that of the plurality of second glass plate combinations 50, and the number of first parallelogram glass plates 401 in each first glass plate combination 40 is the same as that of the second parallelogram glass plates in each second glass plate combination 50.
Illustratively, referring to fig. 3, the second parallel glass plate array 5 includes five layers of second glass plate combinations 50, namely a second glass plate combination 50a, a second glass plate combination 50b, a second glass plate combination 50c, a second glass plate combination 50d and a second glass plate combination 50e, each layer of the second glass plate combination 50 includes a plurality of second parallelogram glass plates which are stacked, one second parallelogram glass plate alone forms one sub-layer, the number of the second parallelogram glass plates included in the second glass plate combination 50a is 5, and the second parallelogram glass plates are respectively a second parallelogram glass plate 501, a second parallelogram glass plate 502, a second parallelogram glass plate 503, a second parallelogram glass plate 504 and a second parallelogram glass plate 505; the number of the second parallelogram glass plates included in the second glass plate combination 50b is 3, and the second parallelogram glass plates are respectively a second parallelogram glass plate 506, a second parallelogram glass plate 507 and a second parallelogram glass plate 508; the second glass plate combination 50c comprises a second parallelogram glass plate 509, a second parallelogram glass plate 510 and a second parallelogram glass plate 511 which are arranged in sequence; the second glass plate combination 50d comprises a second parallelogram glass plate 512, a second parallelogram glass plate 513 and a second parallelogram glass plate 514; the second glass plate combination 50e includes a second parallelogram glass plate 515, a second parallelogram glass plate 516, a second parallelogram glass plate 517, a second parallelogram glass plate 518, and a second parallelogram glass plate 519, and each layer of the second glass plate combination 50 is clearly shown in fig. 3, which is not illustrated here.
It can be seen that the second parallel glass plate array 5 comprises the same number of layers of five second glass plate assemblies 50 as the number of layers of five first glass plate assemblies 40 comprised in the first parallel glass plate array 4 of fig. 2, and the number of five second parallelogram-shaped glass plates comprised in the second glass plate assemblies 50a is the same as the number of five first parallelogram-shaped glass plates 401 comprised in the first glass plate assemblies 40a of fig. 2; similarly, the first glass plate assemblies 40 and the second glass plate assemblies 50 of other layers are in one-to-one correspondence.
A second parallelogram glass plate is individually formed into a sub-layer, so that a plurality of layers of the second parallelogram glass plates are laminated to form a plurality of layers of the second parallelogram glass plates, the inclination angle a of the plurality of second parallelogram glass plates is different, and the inclination angle a of each of the plurality of second parallelogram glass plates refers to the inclination angle a of each of the plurality of second parallelogram glass plates independently of the combination 50 of the layers of the second glass plates. For example, in fig. 3, the second parallelogram array 5 includes 19 second parallelogram glass plates, the different inclination angles a include that the inclination angles a of each of the 19 second parallelogram glass plates are different from each other, and the different inclination angles a include partially the same and partially different, for example, the inclination angles a of 18 second parallelogram glass plates are the same, the inclination angle a of 1 second parallelogram glass plate is different from the inclination angle a of the other 18 second parallelogram glass plates, and the different inclination angles a includes that the inclination angles a of 17 second parallelogram glass plates are the same, and the inclination angles a of the other 2 second parallelogram glass plates are the same or different, but the inclination angles a of the 2 second parallelogram glass plates are different from the inclination angles a of the other 17 second parallelogram glass plates, and so on. The thickness t of the plurality of second parallelogram glass plates is equal along the stacking direction of the plurality of second parallelogram glass plates.
In addition, the density of the second parallelogram glass plates located in the intermediate layer is lower than that of the second parallelogram glass plates located in the outer layers. That is, the density of the topmost and bottommost second parallelogram glass sheets is greater than the density of the middle second parallelogram glass sheets, wherein the density of the topmost and bottommost second parallelogram glass sheets may be the same or different, e.g., the density of the second parallelogram glass sheets 501 and 519 may be the same or different; the densities of the second parallelogram glass plates of the intermediate layers may be the same or different, and for example, the densities of the second parallelogram glass plates 502 to 518 may be the same or different, and at different times, one of the second parallelogram glass plates 502 to 518 may be different from the others, or both of the second parallelogram glass plates 502 to 518 may be different from the others, and so on, and are not limited to the second glass plate set 50, and for example, the second parallelogram glass plates 502 and 513 belonging to different second glass plate sets 50 may be the same or different, and the second parallelogram glass plates 502 and 505 belonging to the same second glass plate set 50 may be the same or different. The density of the second parallelogram glass plates in the intermediate layer is not limited to a sequential relationship, and may be arranged in a stacked manner in a density from large to small in a certain order, in a stacked manner in a density from small to large, or in a random manner in accordance with the density, as long as the density of the second parallelogram glass plates in the intermediate layer is made smaller than that of the second parallelogram glass plates in the outer layer, and will not be described in detail here.
On the other hand, a first lens array 2 is further arranged between the busbar array light source 1 and the parallel glass plate array, one surface of the first lens array 2 facing the busbar array light source is a plane, one surface of the first lens array 2 facing away from the busbar array light source is an aspheric surface, a generatrix of the first lens array 2 is perpendicular to a first direction F1, and the first direction F1 is a direction of a propagation light path of the busbar array light source.
The first lens array 2 is a plano-convex aspheric cylindrical lens array, one surface of the first lens array 2 facing the light source side is a plane, one surface of the first lens array facing away from the light source side is an aspheric surface, the generatrix direction of the cylindrical mirror is perpendicular to the first direction, the first direction can be seen as the plane where the paper surface is located, and the plurality of first lenses are arranged at equal intervals to form the first lens array 2. The first lens array 2 is a fast axis collimating lens group, and can reduce the divergence angle of the fast axis of the output light beam of the bar array light source.
A second lens array 3 is further arranged between the first lens array 2 and the parallel glass plate array, one surface of the second lens array 3 facing the bar array light source is a plane, one surface of the second lens array 3 facing away from the bar array light source is a spherical surface, and a generatrix of the first lens array 2 is parallel to the first direction F1.
The second lens array 3 is a cylindrical microlens array, one surface of the second lens array 3 facing the light source side is a plane, one surface of the second lens array 3 facing away from the light source side is a spherical surface, the generatrix direction of the cylindrical microlens array is parallel to the plane of the paper surface, i.e., parallel to the first direction F1, and a plurality of second lenses are arranged at equal intervals to form the second lens array 3. The second lens array 3 is a slow-axis collimating lens group, and can reduce the divergence angle of the slow axis of the output light beam of the bar array light source.
The adoption of the cylindrical surface micro-lens array realizes the slow axis collimation of the bar array light source, reduces the slow axis divergence angle, reduces the energy loss in the subsequent beam combination process, improves the beam quality and is convenient for focusing and coupling into the optical fiber with smaller core diameter.
After passing through the first lens array 2 and the second lens array 3, as shown in fig. 4, the first parallel glass plate array 4 cuts the slow axis direction of the light beam and generates longitudinal displacement, as shown in fig. 5, the second parallel glass plate array 5 generates transverse displacement to the cut light beam and compresses the slow axis width of the light beam.
The light beam enters the focusing coupling assembly for beam combination, the focusing coupling assembly comprises a third lens 6, a fourth lens 7 and a fifth lens 8 which are sequentially arranged along a propagation light path, the third lens 6 and the fourth lens 7 are used for compressing the light beam in the fast axis direction, and the fifth lens 8 is used for focusing.
As shown in fig. 6, the third lens 6 and the fourth lens 7 form a galilean telescope system to compress the fast axis direction of the light beam, and as shown in fig. 7, the fifth lens 8 is used to focus the light spot and finally couple to an optical fiber.
In a possible embodiment of the present application, the third lens 6 is a plano-convex cylindrical lens, the generatrix direction of the cylindrical lens is perpendicular to the first direction, the first direction is the direction of the light path of the bar array light source, the fourth lens 7 is a plano-concave cylindrical lens, and the generatrix direction of the cylindrical lens is perpendicular to the first direction; the fifth lens 8 is a plano-convex aspheric lens, and one surface of the fifth lens 8 facing the light source side is aspheric and the other surface thereof facing away from the light source side is a plane.
In another possible embodiment of the present application, the focusing coupling assembly composed of the third lens 6, the fourth lens 7 and the fifth lens 8 may adopt two plano-convex cylindrical mirrors instead.
The embodiment of the application also discloses a blue light semiconductor laser, which comprises the optical module for shaping and combining the beams, wherein the bar array light source of the optical module for shaping and combining the beams is a blue light bar array.
The light beams emitted by the blue light bar array light source are shaped and combined through the optical module for shaping and combining the light beams in the embodiment, the incident light and the emergent light are staggered by utilizing the characteristics of the parallelogram glass plate, the light beams sequentially pass through the combination of the two parallelogram glass plates in different directions, the first parallelogram glass plate array 4 cuts the slow axis direction of the light beams and generates longitudinal displacement, the second parallelogram glass plate array 5 generates transverse displacement to the cut light beams, the width d of the slow axis of the light beams is compressed, light spots matched with the shapes of the end surfaces of the optical fibers are emitted, and the coupling efficiency is improved. The light spot is shaped to be approximately circular, the light spot close to the circular shape is more beneficial to being coupled into the optical fiber with the circular end face, the numerical aperture of the optical fiber is fully utilized, and the light spot can be coupled into the optical fiber with smaller core diameter under the limitation of the same numerical aperture.
The blue semiconductor laser comprises the same structure and beneficial effects as the beam shaping and combining optical module in the embodiment. The structure and the advantages of the optical module for shaping and combining beams have been described in detail in the foregoing embodiments, and are not described herein again.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. An optical module for shaping a combined beam, comprising: the optical fiber comprises a bar array light source, a parallel glass plate array and a focusing coupling component which are sequentially arranged on a transmission light path of the bar array light source, light beams emitted by the bar array light source are shaped by the parallel glass plate array and then coupled into an optical fiber by the focusing coupling component, and the coupled light beams form light spots matched with the end surface shape of the optical fiber and are incident into the optical fiber.
2. The beam-shaping optical module of claim 1 wherein the array of parallel glass plates comprises a first array of parallel glass plates and a second array of parallel glass plates arranged in series along the propagation path, the first array of parallel glass plates being configured to cut and longitudinally displace the slow axis of the beam, and the second array of parallel glass plates being configured to laterally displace the cut beam and compress the slow axis width of the beam.
3. The beam-shaping optical module of claim 2 wherein the first array of parallel glass sheets comprises a plurality of first combinations of glass sheets arranged in a stack, each of the first combinations of glass sheets comprising a plurality of first parallelogram-shaped glass sheets, and wherein the number of first parallelogram-shaped glass sheets in the first combinations of glass sheets in the intermediate layers is less than the number of first parallelogram-shaped glass sheets in the first combinations of glass sheets in the outer layers.
4. The beam-shaping optical module of claim 3 wherein the first set of glass plates have different tilt angles and the first plurality of parallelogram glass plates have equal widths along the direction of the first plurality of parallelogram glass plates.
5. The beam-shaping optical module of claim 3 wherein the second array of parallel glass sheets comprises a plurality of second glass sheet assemblies arranged in a stack, each second glass sheet assembly comprising a plurality of second parallelogram glass sheets arranged in a stack, the number of layers of the plurality of first glass sheet assemblies being the same as the number of layers of the plurality of second glass sheet assemblies, the number of first parallelogram glass sheets in each first glass sheet assembly being the same as the number of second parallelogram glass sheets in each second glass sheet assembly.
6. The beam-shaping optical module of claim 5 wherein the second parallelogram glass plates have different tilt angles and have equal thicknesses in the stacking direction of the second parallelogram glass plates; the second parallelogram glass plates located in the middle layer have a density less than the density of the second parallelogram glass plates located in the outer layers.
7. The beam-shaping optical module according to claim 1, wherein a first lens array is further disposed between the bar array light source and the parallel glass plate array, a surface of the first lens array facing the bar array light source is a plane, a surface of the first lens array facing away from the bar array light source is an aspheric surface, a generatrix of the first lens array is perpendicular to a first direction, and the first direction is a direction of a propagation light path of the bar array light source.
8. The beam-shaping optical module of claim 7, further comprising a second lens array disposed between the first lens array and the parallel glass plate array, wherein a surface of the second lens array facing the bar array light source is a plane, a surface of the second lens array facing away from the bar array light source is a spherical surface, and a generatrix of the first lens array is parallel to the first direction.
9. The beam-shaping optical module of claim 1, wherein the focusing coupling assembly comprises a third lens, a fourth lens and a fifth lens sequentially disposed along the propagation optical path, the third lens and the fourth lens are configured to compress the beam in the fast axis direction, and the fifth lens is configured to focus.
10. A blue-light semiconductor laser, comprising the beam-shaping optical module according to any one of claims 1 to 9, wherein the bar array light source of the beam-shaping optical module is a blue-light bar array.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122005604.3U CN215728973U (en) | 2021-08-24 | 2021-08-24 | Shaping beam-combining optical module and blue light semiconductor laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122005604.3U CN215728973U (en) | 2021-08-24 | 2021-08-24 | Shaping beam-combining optical module and blue light semiconductor laser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215728973U true CN215728973U (en) | 2022-02-01 |
Family
ID=80006685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122005604.3U Active CN215728973U (en) | 2021-08-24 | 2021-08-24 | Shaping beam-combining optical module and blue light semiconductor laser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215728973U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115592259A (en) * | 2022-10-27 | 2023-01-13 | 吉林省栅莱特激光科技有限公司（Cn） | Blue light semiconductor laser optical module |
-
2021
- 2021-08-24 CN CN202122005604.3U patent/CN215728973U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115592259A (en) * | 2022-10-27 | 2023-01-13 | 吉林省栅莱特激光科技有限公司（Cn） | Blue light semiconductor laser optical module |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10310278B2 (en) | Semiconductor laser | |
| CN100576666C (en) | High power light beam coupling semiconductor laser | |
| US7079566B2 (en) | Semiconductor laser apparatus capable of routing laser beams emitted from stacked-array laser diode to optical fiber with little loss | |
| EP1972043B1 (en) | System and method for generating intense laser light from laser diode arrays | |
| US5299222A (en) | Multiple diode laser stack for pumping a solid-state laser | |
| CN201199288Y (en) | Light beam coupling apparatus capable of implementing high-power semiconductor laser array using rectangular prism set | |
| US20050063435A1 (en) | Semiconductor laser device and solid-state laser device using same | |
| US6493148B1 (en) | Increasing laser beam power density | |
| CN103944066B (en) | A kind of high-power semiconductor laser closes Shu Fangfa | |
| CN105759411A (en) | Optical fiber coupled laser, optical fiber coupled laser system and optimization method thereof | |
| CN101854031A (en) | Laser device for realizing semiconductor laser beam coupling of parallel plate prism combination | |
| CN215728973U (en) | Shaping beam-combining optical module and blue light semiconductor laser | |
| CN214899327U (en) | Multi-tube semiconductor laser | |
| CN116736553A (en) | Optical module and optical shaping system | |
| JP2004093827A (en) | Condensing device | |
| CN101369717B (en) | Multi-light beam coupling high power semiconductor laser unit | |
| JP2001111147A (en) | Converging device | |
| CN217281627U (en) | Semiconductor laser | |
| CN102520523B (en) | Method for cutting and rearranging beams of semiconductor laser and beam coupling system for semiconductor laser | |
| CN100576005C (en) | Two-dimensional four-way laser beam duty ratio adjusting device | |
| CN202472066U (en) | Multi-luminescent unit semiconductor laser beam coupling system | |
| CN116763425A (en) | Optical module and laser medical device | |
| CN118011573A (en) | Optical fiber coupling system based on arched prism | |
| CN210323601U (en) | Optical assembly and light source module | |
| CN217334654U (en) | Expanded array laser convergence system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |