CN2814458Y - Large power continuous solid laser light-gathering chamber - Google Patents
Large power continuous solid laser light-gathering chamber Download PDFInfo
- Publication number
- CN2814458Y CN2814458Y CN 200520110215 CN200520110215U CN2814458Y CN 2814458 Y CN2814458 Y CN 2814458Y CN 200520110215 CN200520110215 CN 200520110215 CN 200520110215 U CN200520110215 U CN 200520110215U CN 2814458 Y CN2814458 Y CN 2814458Y
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- Prior art keywords
- pump cavity
- circular arc
- laser
- laser pump
- cavity
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- Expired - Fee Related
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- 239000007787 solid Substances 0.000 title claims abstract description 14
- 238000005086 pumping Methods 0.000 abstract description 24
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 12
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 238000007747 plating Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 208000002925 dental caries Diseases 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229940075630 samarium oxide Drugs 0.000 description 2
- 229910001954 samarium oxide Inorganic materials 0.000 description 2
- FKTOIHSPIPYAPE-UHFFFAOYSA-N samarium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[Sm+3].[Sm+3] FKTOIHSPIPYAPE-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000013401 experimental design Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000012634 optical imaging Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The utility model relates to a light-gathering cavity of a large power continuous solid laser device, which belongs to the field of large power solid laser devices. The existing solid laser device has the problems of light beam quality and power. The light-gathering cavity has the structure that a hollow cavity is dug on a rectangular solid along a Y direction in a passing through way. Since an X direction, the Y direction and a Z direction are arranged, the axle wires of the X direction and the Y direction are correspondingly and symmetrically set by the rectangular solid. The light-gathering cavity is divided into an upper part and a lower part, wherein the shape of the cross section of the lower half part and the shape of the cross section of the upper half part symmetrical correspond to the axle wire of the X direction. The cross section of the upper half part has the shape which starts with a one quarter circular arc, wherein one side of the circular arc is arranged on the axle wire of the X direction; the circular arc is connected with a straight line segment which is parallel to the axle wire of the X direction; the circular arc is connected with a circular arc which symmetrical corresponds to the axle wire of the Z direction, wherein the hypotenuse of the circular arc is arranged on an extension line of the straight line segment, and the circle center is arranged in the light-gathering cavity. The cross section of the upper half part symmetrical corresponds to the axle wire of the Z direction. Thus, the rest of the cross section of the upper half part is determined. The utility model has the advantages of high pumping efficiency, good uniformity of the pumping, simple fabrication and convenient adjustment.
Description
Technical field
A kind of high power CW solid state laser laser pump cavity belongs to the great-power solid laser technical field.
Background technology
The Laser Processing range of application is very extensive, obtains to use comparatively widely in industries such as machinery, electronics, automobile, Aero-Space, iron and steel, shipbuilding, military projects at present, and occupy increasing proportion in gross national product (GNP).Great-power solid laser has the advantage that high-energy stores, wavelength is short, the metal absorptivity is high; And be easy to Optical Fiber Transmission, not only improved the dirigibility of system, can be assembled into online flexible manufacturing system with the industrial robot coupling simultaneously and realize flexible processing.
Have two subject matters in the high power CW solid state laser: the beam quality problem, another problem is a power problem.In the solid state laser, laser pump cavity claims pump cavity again, effect be the luminous energy with the pump light source radiation effectively to be transferred to operation material be that the Nd:YAG rod gets on, produce laser with the exciting laser operation material.The transmission performance of laser pump cavity has determined the total efficiency of laser system to a great extent, laser pump cavity provides the good coupling except giving light source and absorbing between the active material, determine that also working-laser material is the distribution of pumping density on the Nd:YAG rod, thereby influence the homogeneity of Laser Output Beam, divergence and the distortion of optics heat.So the quality of the design of laser pump cavity directly influences conversion efficiency, output power and the laser beam quality of laser instrument.
The laser pump cavity structure is of a great variety, and commonly used has: cylindroid laser pump cavity such as Fig. 1, cylinder laser pump cavity such as Fig. 2, hard-pressed bale laser pump cavity are like Fig. 3.In the cylindroid laser pump cavity, the light that is sent by an oval focus will be assembled on another focus behind elliptical reflecting.The cylindroid laser pump cavity utilizes luminous energy with these how much image-forming principles.General uneven illumination is even in single cylindroid chamber, and generation optical distortion and pump energy can not be very high when serious, influence the output power of laser instrument.And many cylindroids laser pump cavity power is big, but the efficient reduction, processing is difficulty.The cylinder laser pump cavity is the special case of oval laser pump cavity, and in order to obtain how much higher imaging light gathering efficiencies, requiring the laser pump cavity size significantly is the size of Nd:YAG rod and pumping lamp greater than operation material.But what in fact the laser pump cavity size can not be done is too big, and owing to the requirement of cooling and optical filtering, pumping lamp and operation material are that the Nd:YAG rod all should suitably leave center of circle placement, have so just caused the uneven problem of beam lighting again.The hard-pressed bale laser pump cavity is mainly realized its optically focused effect by the high-light-energy density in the space in pumping light direct irradiation and the laser pump cavity.The hard-pressed bale laser pump cavity has that cavity space is too narrow and small, the thermal capacity of laser pump cavity own is too small, device intensification significant disadvantage.
Laser pump cavity divides single-lamp pump chamber and many lamps pump cavity again.Single-lamp pump cavity configuration efficient height, easily processing, but pumping homogeneity difference and power are low; Its homogeneity increases many lamps pump cavity structure and pump power can be very high along with the lamp number increases, and can realize high power laser output, but its efficient reduces, difficult processing.
Laser pump cavity has direct reflection and diffuse-reflective cavity from reflected version.When laser pump cavity is diffuse reflection, can form uniform light field in laser pump cavity, the luminous energy that projects on the Nd:YAG rod also is uniform.General temperature reflecting surface can be used magnesium oxide (MgO), barium sulphate (BaSO
4) wait dusty material to make.The direct reflection chamber is more a kind of laser pump cavity of usefulness, and it utilizes optical imaging concept that pump light is converged on the rod, and laser pump cavity directly becomes with the parchment covering or the aluminium leather of polishing, perhaps utilizes polishing of metal light-gathering inner cavity surface or plating high reflecting metal layer.The direct reflection chamber will obtain the good optical homogeneity, then requires to have the geometric configuration of strict cavity reflecting surface, in fact adds to be difficult to accomplish that this makes the homogeneity of its pumping relatively poor man-hour.
Summary of the invention
For obtaining the output of high-power and high-lighting beam quality laser, designed a kind of utility model laser pump cavity.The utility model laser pump cavity is simple in structure, pumping efficiency is high, pumping homogeneity preferably; In addition, because laser pump cavity is made up of two parts up and down, so process simple and easy to adjust.
The utility model laser pump cavity is double lamp pumped ceramic diffuse-reflective cavity.
Laser pump cavity is made up of two identical optically focused cavitys, is the irregular column of a hollow sealing drawing of optimum experimental design.
The high power CW solid state laser laser pump cavity that the utility model provides is characterized in that, this laser pump cavity is to dig out a cavity by a rectangular parallelepiped on the y direction to form with connecting, as Fig. 4; Set x, y, z direction routinely, the corresponding symmetry of this rectangular parallelepiped is set x direction axis, z direction axis;
Laser pump cavity is divided into two parts up and down, and the latter half cross sectional shape and above-mentioned the first half cross sectional shape are about x direction axis symmetry;
Cross sectional shape such as Fig. 5 on the laser pump cavity z direction;
The first half cross sectional shape is as follows: since a quadrant arc, this quadrant arc is on one side on x direction axis, this quadrant arc connects a straight-line segment that is parallel to x direction axis, this line segment connects a circular arc about z direction axis symmetry again, the string of this circular arc is on the extended line of above-mentioned straight-line segment, and the center of circle is in laser pump cavity; The first half cross section remainder shape is determined thus about z direction axis symmetry in the first half cross section.
With respect to single lamp and many lamps pumping configuration, double lamp pumped structure have pumping efficiency height, pumping homogeneity good, can realize high power pumping, easy advantages such as processing.
Principle of work of the present utility model is referring to Fig. 5.This laser pump cavity is made of two identical aluminium oxide ceramics bodies 4.The glaze layer of samarium oxide is mixed in the housing surface plating, improves reflectivity.It is Nd:YAG rod 2 that operation material is placed at the cavity center, its outer filter glass pipe 5 that is with, and symmetria bilateralis is placed two pumping lamps 1.During work, the pump light that pumping lamp 1 sends is through the efficient diffuse reflection of the special geometric body reflecting surface 3 of laser pump cavity 4 formations, being radiated at operation material equably through the pipe 5 that filters again is on the Nd:YAG rod 2, makes operation material 2 can produce the laser output of high-power high light beam quality.Pump light is when 3 diffuse reflections of laser pump cavity reflecting surface, wherein the part wavelength is absorbed less than the ultraviolet light of 400nm, managed 5 o'clock through filtering again, the infrared light of wavelength 1060nm and be absorbed less than the ultraviolet light of 300nm, sending visible fluorescence simultaneously, is that Nd:YAG rod 2 not only can filter harmful light but also can disappear " moving back pump " phenomenon raising pumping efficiency for operation material.Chilled water flows through along pumping lamp 1, the pipe 5 that filters through zone 6, and flow velocity cools off greatly and equably.
Description of drawings
Fig. 1 is a cylindroid laser pump cavity structural representation, and Fig. 1 (a) is a single-lamp pump list cylindroid laser pump cavity structural representation, and Fig. 1 (b) is double lamp pumped bielliptic(al) post laser pump cavity structural representation;
Fig. 2 is a cylinder laser pump cavity structural representation, and Fig. 2 (a) is a single-lamp pump single cylindrical laser pump cavity structural representation, and Fig. 2 (b) is a single-lamp pump bicylindrical laser pump cavity structural representation;
Fig. 3 is a hard-pressed bale laser pump cavity structural representation, and Fig. 3 (a) is a single-lamp pump hard-pressed bale laser pump cavity structural representation, and Fig. 3 (b) is double lamp pumped hard-pressed bale laser pump cavity structural representation;
More than among each figure 1, pumping lamp, 2, operation material is the Nd:YAG rod, 3, the laser pump cavity reflecting surface.
Fig. 4 is a perspective view of the present utility model;
Fig. 5 is a laser pump cavity z direction cross sectional shape synoptic diagram;
Fig. 6 is a principle of work synoptic diagram of the present utility model
Among the figure 1, pumping lamp, 2, operation material is the Nd:YAG rod, 3, the laser pump cavity reflecting surface, 4, the optically focused cavity, 5, the filter glass pipe, 6, chilled water is by the zone;
Embodiment
The utility model is installed referring to Fig. 6.Optically focused cavity size 160mm * 50mm * 16mm, appearance is smooth, and the glaze of samarium oxide is mixed in the surface plating.The utility model is made of two identical optically focused cavitys 4, installs simply, opens upper end optically focused cavity and can change pumping lamp easily.The utility model is simple in structure, and high pumping efficiency is arranged, and the total electrical efficiency of lamp pumping Nd:YAG laser instrument that uses this laser pump cavity to make can reach 4%.And the total electrical efficiency of existing lamp pumping Nd:YAG laser instrument can only reach 3%.
In addition, because laser pump cavity is made up of two parts up and down, so process simple and easy to adjust.
Claims (1)
1, high power CW solid state laser laser pump cavity is characterized in that, this laser pump cavity is to dig out a cavity by a rectangular parallelepiped on the y direction to form with connecting; Set x, y, z direction routinely, the corresponding symmetry of this rectangular parallelepiped is set x direction axis, z direction axis;
Laser pump cavity is divided into two parts up and down, and the latter half cross sectional shape and above-mentioned the first half cross sectional shape are about x direction axis symmetry;
The first half cross sectional shape is as follows: since a quadrant arc, this quadrant arc is on one side on x direction axis, this quadrant arc connects a straight-line segment that is parallel to x direction axis, this line segment connects a circular arc about z direction axis symmetry again, the string of this circular arc is on the extended line of above-mentioned straight-line segment, and the center of circle is in laser pump cavity; The first half cross section remainder shape is determined thus about z direction axis symmetry in the first half cross section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520110215 CN2814458Y (en) | 2005-06-20 | 2005-06-20 | Large power continuous solid laser light-gathering chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520110215 CN2814458Y (en) | 2005-06-20 | 2005-06-20 | Large power continuous solid laser light-gathering chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2814458Y true CN2814458Y (en) | 2006-09-06 |
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ID=36949545
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520110215 Expired - Fee Related CN2814458Y (en) | 2005-06-20 | 2005-06-20 | Large power continuous solid laser light-gathering chamber |
Country Status (1)
| Country | Link |
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| CN (1) | CN2814458Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950916A (en) * | 2010-08-31 | 2011-01-19 | 武汉嘉铭激光有限公司 | Anti-heat distortion Nd: YAG laser for laser cutting |
-
2005
- 2005-06-20 CN CN 200520110215 patent/CN2814458Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950916A (en) * | 2010-08-31 | 2011-01-19 | 武汉嘉铭激光有限公司 | Anti-heat distortion Nd: YAG laser for laser cutting |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060906 Termination date: 20120620 |