CN103176281A - High-power laser spatial filter and manufacture method thereof - Google Patents
High-power laser spatial filter and manufacture method thereof Download PDFInfo
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- CN103176281A CN103176281A CN2011104346838A CN201110434683A CN103176281A CN 103176281 A CN103176281 A CN 103176281A CN 2011104346838 A CN2011104346838 A CN 2011104346838A CN 201110434683 A CN201110434683 A CN 201110434683A CN 103176281 A CN103176281 A CN 103176281A
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 title abstract description 6
- 239000013307 optical fiber Substances 0.000 claims abstract description 40
- 238000005520 cutting process Methods 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 8
- 238000010521 absorption reaction Methods 0.000 claims description 17
- 238000005498 polishing Methods 0.000 claims description 13
- 239000003292 glue Substances 0.000 claims description 12
- 230000003287 optical effect Effects 0.000 claims description 11
- 238000001914 filtration Methods 0.000 claims description 7
- 241000931526 Acer campestre Species 0.000 claims description 3
- 229920006335 epoxy glue Polymers 0.000 claims description 3
- 238000004891 communication Methods 0.000 abstract description 4
- 238000011031 large-scale manufacturing process Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229920002120 photoresistant polymer Polymers 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The invention discloses a high-power laser spatial filter and a manufacture method thereof. The high-power laser spatial filter comprises an optical fiber capillary tube and is formed through simple processing by utilizing a characteristic that the optical fiber capillary tube used by a communication production optical fiber head is provided with a tapered hole. The optical fiber capillary tube comprises a tapered hole and a polished cutting face, wherein the cutting face is a light incident plane, and an inclined plane of the tapered hole is a full-reflecting face. The high-power laser spatial filter is simple in structure, convenient to process, ready-made in manufacture material, low in cost and suitable for large-scale production.
Description
Technical field
The present invention relates to the optical filter field, relate in particular to a kind of high power laser light spatial filter and preparation method thereof.
Background technology
Current, laser instrument is in the application demand in the fields such as cutting, welding, mark, requirement to laser output power is more and more higher, along with the output power of laser instrument uprises, its beam quality often is difficult to guarantee, therefore need to add spatial filter to improve beam quality on light path, thereby satisfy the demand of using.Be much the absorption-type wave filter in prior art, production difficulty is large, and is difficult to be applied in very high power occasion.Patent Office of the People's Republic of China's invention disclosed patented claim on Dec 9 " spatial light filter of high-power laser beam " (application number: 98109276.4) disclose a kind of spatial light filter in 1998, comprise a light steering component, its logical light path edge has adopted total internal reflection to come filtering higher order transverse film, be particularly suitable for high-power laser beam is carried out spatial filtering, as shown in Figure 1.Difficulty of processing is large, the high in cost of production problem but its existing processing mode exists.
Summary of the invention
For overcoming the problems referred to above, the present invention proposes a kind of high power laser light spatial filter and preparation method thereof, utilizes communication to produce optical fiber head optical fiber kapillary used and makes tapered tube, and is cheap, and difficulty of processing is low.
For achieving the above object, technical scheme proposed by the invention is: a kind of high power laser light spatial filter, and described wave filter is processed by a joint optical fiber kapillary; Described optical fiber kapillary comprises a bellmouth, the cut surface of a polishing; Described cut surface is light entrance face, and the inclined-plane of described bellmouth is fully reflecting surface.
Further, described cut surface is coated with anti-reflection film.
Further, described optical fiber kapillary periphery scribbles absorbing and filtering Optical Absorption layer; Absorption layer can adopt air-cooled outward or water-cooled is strengthened heat radiation.
Further, described optical fiber aperture capillaceous can be processed into circle, ellipse, rectangle or square etc. as required.
Further, described optical fiber kapillary is selected the material to optical maser wavelength absorption coefficient minimum used.
The method for making of above-mentioned a kind of high power laser light spatial filter comprises the steps: a) an end alignment of the optical fiber capillary fringe bellmouth of uniform specification is aligned on chopping disk; B) select as required lower cutter cutting position, neat cutting; C) cut surface is carried out polishing, be filled with protection glue in described optical fiber bellmouth capillaceous during cutting, to removing again this protection glue after the cut surface polishing.This protection glue can be UV glue or epoxy glue etc.
Further, comprise that also step d) plates anti-reflection film on the cut surface of polishing.
Further, after comprising that also step e) is completed above-mentioned steps, the optical fiber kapillary periphery that obtains in cutting is at last coated absorbing and filtering Optical Absorption layer.
Beneficial effect of the present invention: the present invention utilizes communication to produce optical fiber head optical fiber kapillary used with the characteristic of bellmouth, size directly is cut into the space small filter as required, because the cost of optical fiber kapillary conventional products batch production is extremely cheap, price advantage is obvious; The spatial filter that adopts said method to make has following features: 1, make material ready-made, with low cost; 2, simple in structure, processing technology is simple; 3, be fit to large-scale production etc.
Description of drawings
Fig. 1 is a kind of spatial light filter schematic diagram of prior art;
Fig. 2 is spatial filter work schematic diagram of the present invention;
Fig. 3 is starting material optical fiber kapillary cutting pre-structure and the cutting position schematic diagram that the present invention selects;
Fig. 4 is spatial filter embodiment one of the present invention;
Fig. 5 is spatial filter embodiment two of the present invention;
Label declaration: 1, optical fiber kapillary; 101, cut surface; 102, fully reflecting surface; 2, absorption layer.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
Be illustrated in figure 2 as the work schematic diagram of spatial filter of the present invention, collimation laser incides on the plane of incidence of wave filter after lens are assembled, and its low frequency light is through the aperture transmission, and high frequency light turns to through the fully reflecting surface reflection, be absorbed by the absorption layer, the low frequency light of transmission is again through collimated.This wave filter is processed by a joint optical fiber kapillary 1; Described optical fiber kapillary 1 comprises a bellmouth, the cut surface 101 of a polishing; Described cut surface 101 is light entrance face, and the inclined-plane of described bellmouth is fully reflecting surface 102.For 101 reflectivity of the cut surface after polishing higher can at cut surface 101 plating one deck anti-reflection films, be coated with last layer absorbing and filtering Optical Absorption layer 2 in optical fiber kapillary 1 periphery at last.In addition, can also increase air-cooled or water-cooled absorption layer 2 is outer, to strengthen heat radiation.The aperture of optical fiber kapillary 1 can be selected the clear aperature of different size as required, also can as required its aperture be processed into the shapes such as circle, ellipse, rectangle or square.In order to reduce material to the Optical Absorption loss, optical fiber kapillary 1 can be selected different materials according to the optical maser wavelength of using, the choice criteria of material is that the corresponding wavelength absorption coefficient is minimum or less, for example quartz is very little to the ultraviolet optical absorption coefficient, can be used for making the spatial filter of Ultra-Violet Laser.
The method for making of above-mentioned spatial filter comprises the steps: a) to choose as required the optical fiber kapillary of certain specification, and the end alignment with the optical fiber capillary fringe bellmouth of uniform specification is aligned on chopping disk; B) select as required lower cutter cutting position, neat cutting, as shown in Figure 3; C) cut surface is carried out polishing, be filled with protection glue in described optical fiber bellmouth capillaceous during cutting, prevent from occurring in process collapsing the limit, to removing again this protection glue after the cut surface polishing.This protection glue can be UV glue or epoxy glue etc.Can also plate one deck anti-reflection film after removing photoresist on the cut surface of polishing; Be coated with the last layer absorption layer in optical fiber periphery capillaceous at last, in order to the high frequency light that absorption is filtered, can adopt air-cooled outside absorption layer or water-cooled to strengthen heat radiation.
Choosing of cutting position, as shown in Figure 3, optical fiber is capillaceous is directly d0, clear aperature as required, cutting position can be chosen in A1 place or A2 place, obtains two kinds of difform wave filters, if shown in 4 and 5.The wave filter cutting position of Fig. 4 has kept the capillary pipe length △ L of one section straight-tube shape diameter at the A1 place, and the rear end connects a poroid kapillary of pitch cone shape.This wave filter can also obtain different clear aperatures by improving optical fiber diameter d 0 capillaceous, general higher clear aperature such as the φ 20 μ m of versatility, φ 50 μ m, φ 125 μ m etc.Wave filter cutting position shown in Figure 5 is at the A2 place, be directly one section with the kapillary of bellmouth, its front port is the sharp edge of bellmouth.This wave filter only need to by adjusting cutting position, just can obtain different clear aperature d1.Can be derived by the size of required clear aperature the position of lower cutter cutting according to the gradient of bellmouth.
The present invention adopts ready-made starting material, utilize communication to produce optical fiber head optical fiber kapillary used with the characteristic of bellmouth, just can obtain high-power laser spatial filter through simple processing technology, simple in structure, easy to process, and it is ready-made, with low cost to make material, is fit to large-scale production.
Although specifically show and introduced the present invention in conjunction with preferred embodiment; but the those skilled in the art should be understood that; within not breaking away from the spirit and scope of the present invention that appended claims limits; the various variations of in the form and details the present invention being made are protection scope of the present invention.
Claims (9)
1. high power laser light spatial filter is characterized in that: described wave filter is processed by a joint optical fiber kapillary; Described optical fiber kapillary comprises a bellmouth, the cut surface of a polishing; Described cut surface is light entrance face, and the inclined-plane of described bellmouth is fully reflecting surface.
2. a kind of high power laser light spatial filter as claimed in claim 1, it is characterized in that: described cut surface is coated with anti-reflection film.
3. a kind of high power laser light spatial filter as claimed in claim 1, it is characterized in that: described optical fiber kapillary periphery scribbles absorbing and filtering Optical Absorption layer.
4. a kind of high power laser light spatial filter as claimed in claim 1, it is characterized in that: described optical fiber aperture capillaceous is processed as circle, ellipse, rectangle or square as required.
5. a kind of high power laser light spatial filter as claimed in claim 1, is characterized in that: the material of described optical fiber kapillary selection to optical maser wavelength absorption coefficient minimum used.
6. the method for making of a high power laser light spatial filter comprises the steps: a) an end alignment of the optical fiber capillary fringe bellmouth of uniform specification is aligned on chopping disk; B) select as required lower cutter cutting position, neat cutting; C) cut surface is carried out polishing, it is characterized in that: be filled with protection glue in described optical fiber bellmouth capillaceous during cutting, to removing again this protection glue after the cut surface polishing.
7. the method for making of a kind of high power laser light spatial filter as claimed in claim 6 is characterized in that: comprise that also step d) plates anti-reflection film on the cut surface of polishing.
8. the method for making of a kind of high power laser light spatial filter as claimed in claim 6 is characterized in that: comprise that also step e) coats absorbing and filtering Optical Absorption layer in the optical fiber kapillary periphery that cutting obtains at last.
9. the method for making of a kind of high power laser light spatial filter as claimed in claim 6, it is characterized in that: described protection glue is UV glue or epoxy glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110434683.8A CN103176281B (en) | 2011-12-22 | 2011-12-22 | Manufacture method of high-power laser spatial filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110434683.8A CN103176281B (en) | 2011-12-22 | 2011-12-22 | Manufacture method of high-power laser spatial filter |
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| Publication Number | Publication Date |
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| CN103176281A true CN103176281A (en) | 2013-06-26 |
| CN103176281B CN103176281B (en) | 2015-04-15 |
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| CN201110434683.8A Expired - Fee Related CN103176281B (en) | 2011-12-22 | 2011-12-22 | Manufacture method of high-power laser spatial filter |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106526872A (en) * | 2016-12-13 | 2017-03-22 | 华中科技大学 | Transmission type laser beam shaping system |
| CN106940481A (en) * | 2017-05-18 | 2017-07-11 | 华中科技大学 | A kind of reflective laser light-beam forming unit |
| CN113805349A (en) * | 2021-10-07 | 2021-12-17 | 苏州科技大学 | A Compact Reflective Spatial Filtering Technology |
| CN120178399A (en) * | 2025-05-22 | 2025-06-20 | 中国科学院西安光学精密机械研究所 | Light absorber for shaping conical light beam and light absorption method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1071516A (en) * | 1991-09-30 | 1993-04-28 | 莫托罗拉公司 | Compact virtual image display |
| US5592503A (en) * | 1993-01-07 | 1997-01-07 | Sdl, Inc. | Semiconductor laser with integral spatial mode filter |
| CN1201151A (en) * | 1997-05-29 | 1998-12-09 | 康宁股份有限公司 | Spatial light filter for high-power laser beam |
-
2011
- 2011-12-22 CN CN201110434683.8A patent/CN103176281B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1071516A (en) * | 1991-09-30 | 1993-04-28 | 莫托罗拉公司 | Compact virtual image display |
| US5592503A (en) * | 1993-01-07 | 1997-01-07 | Sdl, Inc. | Semiconductor laser with integral spatial mode filter |
| CN1201151A (en) * | 1997-05-29 | 1998-12-09 | 康宁股份有限公司 | Spatial light filter for high-power laser beam |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106526872A (en) * | 2016-12-13 | 2017-03-22 | 华中科技大学 | Transmission type laser beam shaping system |
| CN106526872B (en) * | 2016-12-13 | 2022-09-20 | 华中科技大学 | Transmission-type laser beam shaping system |
| CN106940481A (en) * | 2017-05-18 | 2017-07-11 | 华中科技大学 | A kind of reflective laser light-beam forming unit |
| CN106940481B (en) * | 2017-05-18 | 2022-12-02 | 华中科技大学 | A reflective laser beam shaping device |
| CN113805349A (en) * | 2021-10-07 | 2021-12-17 | 苏州科技大学 | A Compact Reflective Spatial Filtering Technology |
| CN120178399A (en) * | 2025-05-22 | 2025-06-20 | 中国科学院西安光学精密机械研究所 | Light absorber for shaping conical light beam and light absorption method |
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| CN103176281B (en) | 2015-04-15 |
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