CN204053229U - Random polarization laser is carried out to the device of light splitting - Google Patents
Random polarization laser is carried out to the device of light splitting Download PDFInfo
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- CN204053229U CN204053229U CN201420545583.1U CN201420545583U CN204053229U CN 204053229 U CN204053229 U CN 204053229U CN 201420545583 U CN201420545583 U CN 201420545583U CN 204053229 U CN204053229 U CN 204053229U
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- polarisation splitter
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Abstract
The utility model relates to device random polarization laser being carried out to light splitting, laser instrument output light path is established the first polarisation splitter cube PBS, first polarisation splitter cube PBS light beam transmission output and beam reflection output establish the first total reflective mirror and the second total reflective mirror respectively, the beam reflection output of total reflective mirror establishes the second polarisation splitter cube PBS, the horizontal ejecting end of second polarisation splitter cube PBS establishes the 3 1/2 λ slide and the 3rd polarisation splitter cube PBS, the horizontal ejecting end of the 3rd polarisation splitter cube PBS establishes the 4 1/2 λ slide and the 4th polarisation splitter cube PBS, the vertical ejecting end light path of 4th polarisation splitter cube PBS establishes power meter, second polarisation splitter cube PBS, 3rd polarisation splitter cube PBS all establishes 1/4 λ slide and focus lamp with the vertical ejecting end of the 4th polarisation splitter cube PBS.Can significantly improve spectral energy control accuracy, be convenient to light splitting quantity and expand.
Description
Technical field
The utility model relates to a kind of device random polarization laser being carried out to light splitting, belongs to laser technology field.
Background technology
Laser Processing, as manufacturing process advanced in modern science and technology, is subject to all the more the attention of industry-by-industry, and the feasibility of being processed by laser realization and practicality are also more and more verified.
The unit power construction cost of laser instrument reduces along with the rising of laser power, in order to cost-saving, needs high-power laser is divided into multi beam and processes.
Normally used optical fiber laser, its light exported is random polarization state.Can only carry out light splitting by the semi-transparent semi-reflecting eyeglass plating different transmittance and reflectance ratio at present, but the power proportions of light splitting is by the restriction of original plated film lens, cannot carry out accurate adjustment.Coarse like this spectrophotometric result can make the uniformity of following process quality poor.Also do not have at present a kind of can in very large range accurate continuously adjustable light splitting technology and method with entering polarization state laser.
Utility model content
The purpose of this utility model overcomes the deficiency that prior art exists, and provides a kind of device random polarization laser being carried out to light splitting, make the power of every Shu Jiguang can be accurately adjustable continuously on a large scale.
The purpose of this utility model is achieved through the following technical solutions:
Random polarization laser is carried out to the device of light splitting, feature is: the output light path of laser instrument is furnished with the first polarisation splitter cube PBS, the light beam transmission output of the first polarisation splitter cube PBS is provided with the first total reflective mirror, the beam reflection output of the first polarisation splitter cube PBS is provided with the second total reflective mirror, the beam reflection output of the first total reflective mirror and the second total reflective mirror is provided with the second polarisation splitter cube PBS, the light path of the vertical ejecting end of the second polarisation splitter cube PBS sets gradually the one 1/4 λ slide and the first focus lamp, the light path of the horizontal ejecting end of the second polarisation splitter cube PBS sets gradually the 3 1/2 λ slide and the 3rd polarisation splitter cube PBS, the light path of the vertical ejecting end of the 3rd polarisation splitter cube PBS sets gradually the 2 1/4 λ slide and the second focus lamp, the light path of the horizontal ejecting end of the 3rd polarisation splitter cube PBS sets gradually the 4 1/2 λ slide and the 4th polarisation splitter cube PBS, the light path of the vertical ejecting end of the 4th polarisation splitter cube PBS sets gradually the 3 1/4 λ slide and the 3rd focus lamp, the light path of the vertical ejecting end of the 4th polarisation splitter cube PBS is provided with power meter.
Further, above-mentioned device random polarization laser being carried out to light splitting, between described laser instrument and the first polarisation splitter cube PBS, light path is provided with optical gate collimation unit.
Further, above-mentioned device random polarization laser being carried out to light splitting, the light path between described first total reflective mirror and the second polarisation splitter cube PBS is provided with the one 1/2 λ slide.
Further, above-mentioned device random polarization laser being carried out to light splitting, the light path between described second total reflective mirror and the second polarisation splitter cube PBS is provided with the 2 1/2 λ slide.
The substantive distinguishing features that technical solutions of the utility model are outstanding and significant progress are mainly reflected in:
The utility model adopts the laser of the three-dimensional optical splitter PBS of polarisation to random polarization state to carry out the power continuously adjustabe of light splitting and every Shu Guang, and what accurately can control every Shu Guang goes out light energy; Energy attenuation is few, and the utilization rate of general power is high; By the quantity of follow-up interpolation PBS, the light splitting of any amount light beam can be realized; Can effectively utilize residue luminous energy, carry out the Real-Time Monitoring of laser instrument bright dipping; For the light splitting of even number, improvement project can also be had.Not only increase substantially the energy hole precision of light splitting, and conveniently can carry out the expansion of follow-up light splitting quantity.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, technical solutions of the utility model are described further:
Fig. 1: light channel structure schematic diagram of the present utility model.
Detailed description of the invention
The utility model utilizes three-dimensional optical splitter (PBS) laser to random polarization state of polarisation to carry out the power continuously adjustabe of light splitting and every Shu Guang.
As shown in Figure 1, random polarization laser is carried out to the device of light splitting, the output light path of laser instrument 1 is furnished with successively optical gate collimation unit 2 and the first polarisation splitter cube PBS3, the light beam transmission output of the first polarisation splitter cube PBS3 is provided with the first total reflective mirror 4, the beam reflection output of the first polarisation splitter cube PBS3 is provided with the second total reflective mirror 5, the beam reflection output of the first total reflective mirror 4 and the second total reflective mirror 5 is provided with the second polarisation splitter cube PBS8, light path between first total reflective mirror 4 and the second polarisation splitter cube PBS8 is provided with the one 1/2 λ slide 6, light path between second total reflective mirror 5 and the second polarisation splitter cube PBS8 is provided with the 2 1/2 λ slide 7, the light path of the vertical ejecting end of the second polarisation splitter cube PBS8 sets gradually the one 1/4 λ slide 14 and the first focus lamp 17, the light path of the horizontal ejecting end of the second polarisation splitter cube PBS8 sets gradually the 3 1/2 λ slide 9 and the 3rd polarisation splitter cube PBS10, the light path of the vertical ejecting end of the 3rd polarisation splitter cube PBS10 sets gradually the 2 1/4 λ slide 15 and the second focus lamp 18, the light path of the horizontal ejecting end of the 3rd polarisation splitter cube PBS10 sets gradually the 4 1/2 λ slide 11 and the 4th polarisation splitter cube PBS12, the light path of the vertical ejecting end of the 4th polarisation splitter cube PBS12 sets gradually the 3 1/4 λ slide 16 and the 3rd focus lamp 19, the light path of the vertical ejecting end of the 4th polarisation splitter cube PBS12 is provided with power meter 13.
When point light is carried out to random polarization laser, the laser that laser instrument 1 is launched incides the front surface of the first polarisation splitter cube PBS3, random polarization state laser is by being divided into two bundle polarization state orthogonal linearly polarized light P light and S light after PBS, reflex to the upper surface of the second polarisation splitter cube PBS8 through the first total reflective mirror 4 through the laser of the first polarisation splitter cube PBS3 transmission, the laser that first polarisation splitter cube PBS3 reflects reflexes to the front surface of the second polarisation splitter cube PBS8 through the second total reflective mirror 5, part light penetrates from the second polarisation splitter cube PBS8 downward vertical, part light is level injection after the second polarisation splitter cube PBS8, reflect downwards through the 3 1/2 λ slide 9 and the 3rd polarisation splitter cube PBS10 rear portion light, part light is level injection after the 3rd polarisation splitter cube PBS10, reflect downwards through the 4 1/2 λ slide 11 and the 4th polarisation splitter cube PBS12 rear portion light, part light is level injection after the 4th polarisation splitter cube PBS12, ingoing power meter 13 carries out power detection, wherein, the light of the second polarisation splitter cube PBS8 downward vertical injection is converted to circularly polarized light through the one 1/4 λ slide 14, enter the first focus lamp 17 again, the light that 3rd polarisation splitter cube PBS10 reflects downwards is converted to circularly polarized light through the 2 1/4 λ slide 15, enter the second focus lamp 18 again, the light that 4th polarisation splitter cube PBS12 reflects downwards is converted to circularly polarized light through the 3 1/4 λ slide 16, then enters the 3rd focus lamp 19.
Adjust the one 1/2 λ slide the 6 and the 2 1/2 λ slide 7, make the luminous power penetrated below the second polarisation splitter cube PBS8 account for 32%, all the other light of 68% penetrate along horizontal direction;
Adjust the 3 1/2 λ slide 9, make the luminous power penetrated below the 3rd polarisation splitter cube PBS10 account for 32%, the energy of residue 36% transmits from the 3rd polarisation splitter cube PBS10;
Adjust the 4 1/2 λ slide 11, make the luminous power penetrated below the 4th polarisation splitter cube PBS12 account for 32%, the energy of residue 4% transmits from the 4th polarisation splitter cube PBS12;
By power meter 13 Real-Time Monitoring 4% optical power stability, convert and obtain the stability of laser instrument;
All arrange 1/4 λ slide below the light of all vertical exit, linearly polarized light is converted to circularly polarized light, and below arranges focus lamp again, can process after focusing.
The laser that laser instrument is launched incides the front surface of the first polarisation splitter cube PBS3 after optical gate collimation unit 2, and the light through the first polarisation splitter cube PBS3 transmittance and reflectance is that P light restraints the vertical linearly polarized light of polarization state with S light two respectively; First carry out P light and the adjustment of S light ratio example with the one 1/2 λ slide the 6 and the 2 1/2 λ slide 7, then after the second polarisation splitter cube PBS8 transmittance and reflectance, carry out P light and the adjustment of S light ratio example with/2 λ slides again, make each laser exported can both continuously adjustabe; Again by 1/4 λ slide after output light, linearly polarized light is converted to circularly polarized light, makes the processing effect of all directions consistent.
Fiber laser light, by being mapped on the front surface of PBS after beam-expanding collimation; Random polarization state laser, by after PBS, is divided into two bundle polarization state orthogonal linearly polarized light P light and S light; Adopt 45 ° of completely reflecting mirrors, by two-beam more again from two not coplanar incidences of PBS, close and restraint into beam of laser; Rotate 1/2 λ slide between total reflective mirror and PBS, PBS can be made through different with the energy proportion of reflection; Suitable adjustment two 1/2 λ slide angles, the light energy of 32% is transmitted below PBS, and all the other light of 68% reflect along horizontal direction.
In sum, the utility model utilizes three-dimensional optical splitter (PBS) laser to random polarization state of polarisation to carry out the power continuously adjustabe of light splitting and every Shu Guang, and what accurately can control every Shu Guang goes out light energy; Energy attenuation is few, and the utilization rate of general power is high; By the quantity of follow-up interpolation PBS, the light splitting of any amount light beam can be realized; Can effectively utilize residue luminous energy, carry out the Real-Time Monitoring of laser instrument bright dipping; For the light splitting of even number, improvement project can also be had.Not only increase substantially the energy hole precision of light splitting, and conveniently can carry out the expansion of follow-up light splitting quantity.
It is to be understood that: the above is only preferred embodiment of the present utility model; for those skilled in the art; under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (4)
1. pair random polarization laser carries out the device of light splitting, it is characterized in that: the output light path of laser instrument (1) is furnished with the first polarisation splitter cube PBS (3), the light beam transmission output of the first polarisation splitter cube PBS (3) is provided with the first total reflective mirror (4), the beam reflection output of the first polarisation splitter cube PBS (3) is provided with the second total reflective mirror (5), the beam reflection output of the first total reflective mirror (4) and the second total reflective mirror (5) is provided with the second polarisation splitter cube PBS (8), the light path of the vertical ejecting end of the second polarisation splitter cube PBS (8) sets gradually the one 1/4 λ slide (14) and the first focus lamp (17), the light path of the horizontal ejecting end of the second polarisation splitter cube PBS (8) sets gradually the 3 1/2 λ slide (9) and the 3rd polarisation splitter cube PBS (10), the light path of the vertical ejecting end of the 3rd polarisation splitter cube PBS (10) sets gradually the 2 1/4 λ slide (15) and the second focus lamp (18), the light path of the horizontal ejecting end of the 3rd polarisation splitter cube PBS (10) sets gradually the 4 1/2 λ slide (11) and the 4th polarisation splitter cube PBS (12), the light path of the vertical ejecting end of the 4th polarisation splitter cube PBS (12) sets gradually the 3 1/4 λ slide (16) and the 3rd focus lamp (19), the light path of the vertical ejecting end of the 4th polarisation splitter cube PBS (12) is provided with power meter (13).
2. device random polarization laser being carried out to light splitting according to claim 1, is characterized in that: between described laser instrument (1) and the first polarisation splitter cube PBS (3), light path is provided with optical gate collimation unit (2).
3. device random polarization laser being carried out to light splitting according to claim 1, is characterized in that: the light path between described first total reflective mirror (4) and the second polarisation splitter cube PBS (8) is provided with the one 1/2 λ slide (6).
4. device random polarization laser being carried out to light splitting according to claim 1, is characterized in that: the light path between described second total reflective mirror (5) and the second polarisation splitter cube PBS (8) is provided with the 2 1/2 λ slide (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420545583.1U CN204053229U (en) | 2014-09-22 | 2014-09-22 | Random polarization laser is carried out to the device of light splitting |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420545583.1U CN204053229U (en) | 2014-09-22 | 2014-09-22 | Random polarization laser is carried out to the device of light splitting |
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| CN204053229U true CN204053229U (en) | 2014-12-31 |
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| CN201420545583.1U Expired - Fee Related CN204053229U (en) | 2014-09-22 | 2014-09-22 | Random polarization laser is carried out to the device of light splitting |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104259657A (en) * | 2014-09-22 | 2015-01-07 | 苏州德龙激光股份有限公司 | Random polarized laser splitting device and method |
| CN108907457A (en) * | 2018-08-14 | 2018-11-30 | 江苏瑞驰机电科技有限公司 | The device for merging, separating optical delivery is realized by laser reversal |
-
2014
- 2014-09-22 CN CN201420545583.1U patent/CN204053229U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104259657A (en) * | 2014-09-22 | 2015-01-07 | 苏州德龙激光股份有限公司 | Random polarized laser splitting device and method |
| CN104259657B (en) * | 2014-09-22 | 2016-01-06 | 苏州德龙激光股份有限公司 | Random polarization laser is carried out to the devices and methods therefor of light splitting |
| CN108907457A (en) * | 2018-08-14 | 2018-11-30 | 江苏瑞驰机电科技有限公司 | The device for merging, separating optical delivery is realized by laser reversal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141231 Termination date: 20160922 |