CN203076785U - Time sharing light splitting system - Google Patents
Time sharing light splitting system Download PDFInfo
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- CN203076785U CN203076785U CN2012207257338U CN201220725733U CN203076785U CN 203076785 U CN203076785 U CN 203076785U CN 2012207257338 U CN2012207257338 U CN 2012207257338U CN 201220725733 U CN201220725733 U CN 201220725733U CN 203076785 U CN203076785 U CN 203076785U
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- laser
- light splitting
- electrooptic modulator
- time sharing
- splitting system
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Abstract
The utility model discloses a time sharing light splitting system which comprises a laser device, a polarizing beam splitter, an all-trans lens and an electrooptical modulator, wherein the electrooptical modulator is utilized for adding external control voltage to laser emitted by the laser device to change the polarization direction of the laser, and alternatively the external control voltage is not added to conduct time sharing light splitting on the laser. According to the technical scheme, the time sharing light splitting system is simple in structure and convenient to install and operate; as the time sharing light splitting system uses the electrooptical modulator, the polarization direction of the laser can be changed in a time sharing mode to make light splitting conditions, the polarization angle of the beam laser can be freely regulated and controlled, and the purpose of time sharing light splitting is achieved; and unit impulse energy of the laser of the time sharing light splitting system is the same, the impulse frequency of the laser after light splitting is one half of that of the laser before light splitting, no laser energy is lost in the whole process, and the laser energy is completely utilized.
Description
Technical field
The utility model relates to the optical transform and the control field of laser, discloses a kind of timesharing beam splitting system.
Background technology
Laser technology is from last world sixties high speed development so far, simultaneously, because other new and high technologies interpenetrate, in various fields such as materials processing, medical treatment, military affairs, measurement and scientific experiment researchs more and more widely application arranged.And the light source for processing of laser process equipment is the key of equipment crudy and efficient.By the reasonable disposition light source for processing, the service efficiency and the process modification of equipment all had crucial meaning.
Traditional laser process equipment beam split mode is general to adopt common spectroscope to carry out beam split, laser beam energy after the beam splitting can descend like this, for example by after the beam split of half-reflection and half-transmission spectroscope, every road beam energy drops to half of original energy of light source, for guaranteeing certain crudy, LASER Light Source energy requirement before the beam split improves, thereby causes cost to rise.
For pulse modulated laser instrument, modulating frequency can reach tens to hundreds of kHz, when being used for processing work, usually carry out beam flying processing in conjunction with the optics galvanometer, its sweep speed very easily causes hot spot overlapping far away from the light beam pulse frequency, causes the waste of light source for processing.
Also has the system that carries out beam split by full spectroscope, speculum and light attenuation device, principle is: lead the respectively direction of appointment of the photosynthetic reverberation of transmission that completely reflecting mirror produces the spectroscope beam split, light attenuation device is arranged on a branch of beam split light path that power is stronger in transmitted light and the reverberation, the power attenuation of a branch of beam split that power is stronger divides luminous power identical with another bundle, the method also is the energy of light source of having decayed, and does not have the reasonable use energy of light source.
Summary of the invention
The utility model provides a kind of timesharing beam splitting system, and technical problem to be solved is rationally to utilize energy of light source, improves working (machining) efficiency.
The timesharing beam splitting system promptly refers to change according to specific rule the polarization state of laser instrument output laser pulse on time domain, utilize optics for example the pulse of polarization spectroscope control laser in different polarization states reflection with see through, thereby in chronomere, beam of laser is carried out beam split.
In order to solve the problems of the technologies described above, the technical solution of the utility model is as follows:
A kind of timesharing beam splitting system comprises laser instrument, polarization spectroscope and total reflective mirror, also comprises electrooptic modulator;
Described electrooptic modulator is provided with Drive and Control Circuit;
The described electrooptic modulator of described drive control circuit adds control voltage on the laser that described laser instrument sends the time, and described laser instrument, electrooptic modulator and polarization spectroscope are successively set on the light path of light transmission;
The described electrooptic modulator of described drive control circuit does not add control voltage on the laser that described laser instrument sends the time, and described laser instrument, electrooptic modulator and polarization spectroscope and total reflective mirror are successively set on the light path of light transmission.
Preferably, described laser instrument is a Lumera HR25 type laser instrument, optical maser wavelength 532nm, and pulsewidth is less than 10ps.
Preferably, described electrooptic modulator is a BME dpp2a repetition rate 1MHZ BBO electrooptic modulator.
Preferably, described polarization spectroscope is faraday's prism.
Use the technical solution of the utility model, have following technique effect: (1) timesharing beam splitting system of the present utility model is simple in structure, convenient installation, operation; (2) timesharing beam splitting system of the present utility model can realize that by adopting electrooptic modulator the branch optical condition is made in the polarization direction of timesharing change laser, can regulate and control the polarization angle of beam splitting laser arbitrarily, realizes the purpose of timesharing beam split; (3) the unit pulse energy of laser is identical in the utility model timesharing beam splitting system, and the pulse frequency of the laser after the beam split is half of the preceding laser of beam split, and whole process does not have the loss laser energy, has made full use of laser energy; (4) Drive and Control Circuit changes the sequential of electrooptic modulator applied voltage, what adopt is to go up timesharing output the time, pulsed laser energy is constant, thereby makes the processing configuration mode of conventional two laser heads be reduced to a laser head processing configuration, has controlled production cost effectively.
Description of drawings
Fig. 1 is the structural representation of the utility model timesharing beam splitting system.
The specific embodiment
Describe the technical solution of the utility model in detail below in conjunction with accompanying drawing and specific embodiment, be used for explaining the technical solution of the utility model in this illustrative examples of the present utility model and explanation, but not as to qualification of the present utility model.
As shown in Figure 1, the timesharing beam splitting system that provides of the utility model comprises laser instrument 11, polarization spectroscope 12, total reflective mirror 13 and electrooptic modulator 14.
Described laser instrument 11, electrooptic modulator 14, polarization spectroscope 12 and total reflective mirror 13 are successively set on the light path of light transmission.
Described electrooptic modulator 14 is provided with Drive and Control Circuit (not shown), is used for carrying out applied voltage or applied voltage not according to the laser that 14 pairs of processes of described electrooptic modulator are controlled in actual demand.
During first laser 15 of the odd number sequence that described laser instrument 11 is launched, the described electrooptic modulator 14 of described Drive and Control Circuit (not shown) control adds the polarization direction that control voltage changes described first laser 15, obtain second laser 16, described second swashs 16 light obtain leading the 3rd laser 17 of assigned direction after described polarization spectroscope 12 reflections.
During first laser 15 of the even number sequence that described laser instrument 11 is launched, the described electrooptic modulator 14 of described Drive and Control Circuit (not shown) control does not add control voltage, described first laser 15 obtains the 4th laser 18 through described electrooptic modulator 14 direct transmissions, described the 4th laser 18 sees through and obtains the 5th laser 19, the five laser 19 after described polarization spectroscope 12 transmissions through described total reflective mirror 13 reflections obtain leading the 6th laser 110 of assigned direction.
The sequential that described Drive and Control Circuit (not shown) can change the electrooptic modulator applied voltage arbitrarily obtains the laser of different polarization direction.
Described the 3rd laser 17 and the 6th laser 110 have and described first laser, 15 essentially identical unit pulse energy, and the pulse frequency of described the 3rd laser 17 and the 6th laser 110 are described first laser 15 half as the sub-light after the beam splitting.
Use timesharing beam splitting system of the present utility model, have following effect:
(1) timesharing beam splitting system of the present utility model is simple in structure, convenient installation, operation.
(2) timesharing beam splitting system of the present utility model can realize that by adopting electrooptic modulator the branch optical condition is made in the polarization direction of timesharing change laser, can regulate and control the polarization angle of beam splitting laser arbitrarily, realizes the purpose of timesharing beam split.
(3) the unit pulse energy of laser is identical in the utility model timesharing beam splitting system, and the pulse frequency of the laser after the beam split is half of the preceding laser of beam split, and whole process does not have the loss laser energy, has made full use of laser energy.
(4) Drive and Control Circuit can change the sequential of electrooptic modulator applied voltage arbitrarily, what adopt is to go up timesharing output the time, pulsed laser energy is constant, thereby makes the processing configuration mode of conventional two laser heads be reduced to a laser head processing configuration, has controlled production cost effectively.
The above is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also are considered as protection domain of the present utility model.
Claims (4)
1. a timesharing beam splitting system comprises laser instrument (11), polarization spectroscope (12) and total reflective mirror (13), it is characterized in that: also comprise electrooptic modulator (14);
Described electrooptic modulator (14) is provided with Drive and Control Circuit;
The described electrooptic modulator of described drive control circuit (14) adds control voltage on the laser that described laser instrument (11) sends the time, and described laser instrument (11), electrooptic modulator (14) and polarization spectroscope (12) are successively set on the light path of light transmission;
The described electrooptic modulator of described drive control circuit (14) does not add control voltage on the laser that described laser instrument (11) sends the time, and described laser instrument (11), electrooptic modulator (14) and polarization spectroscope (12) and total reflective mirror (13) are successively set on the light path of light transmission.
2. timesharing beam splitting system according to claim 1 is characterized in that described laser instrument (11) is a Lumera HR25 type laser instrument, optical maser wavelength 532nm, and pulsewidth is less than 10ps.
3. timesharing beam splitting system according to claim 1 is characterized in that described electrooptic modulator (14) is the BBO electrooptic modulator of BME dpp2a repetition rate 1MHz.
4. timesharing beam splitting system according to claim 1 is characterized in that described polarization spectroscope (12) is faraday's prism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207257338U CN203076785U (en) | 2012-12-25 | 2012-12-25 | Time sharing light splitting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207257338U CN203076785U (en) | 2012-12-25 | 2012-12-25 | Time sharing light splitting system |
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| Publication Number | Publication Date |
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| CN203076785U true CN203076785U (en) | 2013-07-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012207257338U Expired - Lifetime CN203076785U (en) | 2012-12-25 | 2012-12-25 | Time sharing light splitting system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104400219A (en) * | 2014-11-18 | 2015-03-11 | 深圳市大族激光科技股份有限公司 | Laser jump-type multi-axis machining control method and laser jump-type multi-axis machining control system |
| CN105345259A (en) * | 2015-12-01 | 2016-02-24 | 湖北三江航天红峰控制有限公司 | Single-laser double-path laser processing device |
| CN110587149A (en) * | 2018-05-23 | 2019-12-20 | 雷科股份有限公司 | Laser clock modulation light splitting cutting processing method and module thereof |
| CN111922511A (en) * | 2020-06-12 | 2020-11-13 | 大族激光科技产业集团股份有限公司 | Laser processing device, processing equipment, processing system and processing method |
-
2012
- 2012-12-25 CN CN2012207257338U patent/CN203076785U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104400219A (en) * | 2014-11-18 | 2015-03-11 | 深圳市大族激光科技股份有限公司 | Laser jump-type multi-axis machining control method and laser jump-type multi-axis machining control system |
| CN104400219B (en) * | 2014-11-18 | 2016-08-24 | 大族激光科技产业集团股份有限公司 | Laser great-jump-forward Multi-axis Machining control method and system |
| CN105345259A (en) * | 2015-12-01 | 2016-02-24 | 湖北三江航天红峰控制有限公司 | Single-laser double-path laser processing device |
| CN105345259B (en) * | 2015-12-01 | 2017-10-27 | 湖北三江航天红峰控制有限公司 | A kind of single laser Double passage laser processing unit (plant) |
| CN110587149A (en) * | 2018-05-23 | 2019-12-20 | 雷科股份有限公司 | Laser clock modulation light splitting cutting processing method and module thereof |
| CN111922511A (en) * | 2020-06-12 | 2020-11-13 | 大族激光科技产业集团股份有限公司 | Laser processing device, processing equipment, processing system and processing method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 430000 Hubei city of Wuhan province Optics Valley Industrial Park of East Lake Development Zone, Shiyuan two Road No. four Patentee after: WUHAN DR LASER TECHNOLOGY Co.,Ltd. Address before: 430000 Hubei city of Wuhan province Optics Valley Industrial Park of East Lake Development Zone, Shiyuan two Road No. four Patentee before: WUHAN DR LASER TECHNOLOGY Co.,Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20130724 |
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| CX01 | Expiry of patent term |