CN201897502U - Schlieren device for testing far-field focus faculae of high-power laser - Google Patents
Schlieren device for testing far-field focus faculae of high-power laser Download PDFInfo
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- CN201897502U CN201897502U CN2010206370067U CN201020637006U CN201897502U CN 201897502 U CN201897502 U CN 201897502U CN 2010206370067 U CN2010206370067 U CN 2010206370067U CN 201020637006 U CN201020637006 U CN 201020637006U CN 201897502 U CN201897502 U CN 201897502U
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- power laser
- field focus
- compressing tablet
- high power
- schlieren device
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Abstract
The utility model relates to a schlieren device for testing the far-field focus faculae of a high-power laser. The schlieren device comprises a light blocking board and a transparent shade arranged outside the light blocking board. The schlieren device for testing the far-field focus faculae of the high-power laser provided by the utility model has the advantages of good light-blocking effect, laser radiation resistance and without any influence on measurement.
Description
Technical field
The utility model belongs to optical field, relates to a kind of schlieren device, relates in particular to a kind of high power laser light far-field focus test schlieren device.
Background technology
Far-field focus is an important indicator that characterizes the high power laser system beam quality, also is the parameter directly perceived of weighing the laser target shooting focal spot intensity distribution, especially needs to pay close attention to the size and the energy distribution thereof of the other pigtail of focal spot, need be measured accurately.Because the wide dynamic range (more than 10000: 1) of far-field focus, still the survey sensor that does not have great dynamic range like this, the method that a kind of focal spot is measured is to measure the main lobe and the secondary lobe of focal spot respectively, obtain complete focal spot form by image reconstruction, this method is referred to as schlieren method, as shown in Figure 1.When measuring secondary lobe, main lobe need be blocked, otherwise can cause the damage of image sensor, the device that blocks main pigtail is the schlieren device, to the requirement of this device be in the light tight, anti-laser irradiation, can not cause added influence to measurement, do not have such device to occur at present as yet.
The utility model content
In order to solve the above-mentioned technical matters that exists in the background technology, the utility model provide a kind of be in the light effective, anti-laser irradiation and the high power laser light far-field focus test schlieren device that can not have any impact to measurement.
Technical solution of the present utility model is: the utility model provides a kind of high power laser light far-field focus test to use the schlieren device, and its special character is: the diffuser that described high power laser light far-field focus test comprises light barrier and is arranged at the light barrier outside with the schlieren device.
Above-mentioned diffuser comprises upper glass compressing tablet and the lower-glass compressing tablet that snaps together with the upper glass compressing tablet.
Above-mentioned diffuser also comprises seal, and described upper glass compressing tablet and lower-glass compressing tablet fasten the back and seal by seal.
Above-mentioned light barrier is that transmitance is not more than 10
-5And anti-irradiation threshold value is not less than 20J/cm
2Light barrier.
Above-mentioned light barrier is a sheet metal.
Above-mentioned light barrier is that thickness is the steel disc of 0.1mm～0.3mm.
Above-mentioned light barrier is that thickness is the steel disc of 0.2mm.
Be coated with anti-reflection film on the above-mentioned diffuser.
The thickness of above-mentioned upper glass compressing tablet or lower-glass compressing tablet is 0.3mm～1mm.
The thickness of above-mentioned upper glass compressing tablet or lower-glass compressing tablet is 0.5mm.
The utility model has the advantages that:
High power laser light far-field focus test provided by the utility model is adopted sheet metal, especially stalloy with the material of schlieren device; Adopt thin glass sheet in the encapsulation of light barrier, simultaneously, adopt silica gel light barrier to be encapsulated in the glass sheet of clamping up and down and be coated with anti-reflection film on the packaged glass sheet up and down, can damage device and sealing reliable, can not have any impact to measurement.The formed schlieren device of the utility model can block laser master pigtail, and the other pigtail of laser is seen through; Have the tight and anti-laser irradiation of being in the light, and easily be processed into advantages such as the size that needs and shape, the schlieren device that forms after the overall package is convenient to clamping and is installed, and is equal to the installation of glass elements.
Description of drawings
Fig. 1 is the light path synoptic diagram of schlieren method when use in the prior art;
Fig. 2 is a light barrier structural representation provided by the utility model;
Fig. 3 is the structural representation of schlieren device provided by the utility model;
Fig. 4 is that the A of Fig. 3 is to view.
Embodiment
Referring to Fig. 2, Fig. 3 and Fig. 4, the utility model provides a kind of high power laser light far-field focus test to use the schlieren device, and its one-piece construction is shaped as circle, comprises light barrier 1, upper glass compressing tablet 2, lower-glass compressing tablet 3, silica gel composition.
This upper glass compressing tablet 2 and lower-glass compressing tablet 3 constitute diffuser, upper glass compressing tablet 2 and lower-glass compressing tablet 3 fasten together, diffuser is arranged on the outside of light barrier 1, for result of use better, fasten the back by seal 4 sealings at upper glass compressing tablet 2 and with lower-glass compressing tablet 3, sealing part 4 can be silica gel, glass cement etc.
Be coated with anti-reflection film on the diffuser, just the surfaces externally and internally of upper glass compressing tablet 2 and lower-glass compressing tablet 3 all is coated with anti-reflection film, upper glass compressing tablet 2 and lower-glass compressing tablet 3 can be quartz glass, K9 glass etc. any all be feasible.
The thickness of upper glass compressing tablet or lower-glass compressing tablet is 0.3mm～1mm, especially 0.5mm.
Specific implementation, light barrier 1 adopts thin tool steel sheet material, and thickness is 0.2mm, and its shape and size adopt the small processing technology of laser to form according to the actual needs that are in the light;
The material of glass preform 2,3 is selected according to the optical maser wavelength of being tested up and down, simultaneously all surface of glass preform is plated the anti-reflection film of testing laser, to obtain laser transmittance as much as possible; The thickness of glass preform is chosen as 0.5mm, and size is φ 20mm;
Adopt silica gel to smear glass preform slit all round up and down, the pulling force that adopts the dried back of glue to form is encapsulated in light barrier 1 in the glass preform;
Keep more than 24 hours, treat promptly to have formed the schlieren device after glue is done, the method for employing clamping glass elements is fixed on the schlieren device to test in the light path and gets final product during test.
Claims (10)
1. the schlieren device is used in a high power laser light far-field focus test, it is characterized in that: the diffuser that described high power laser light far-field focus test comprises light barrier and is arranged at the light barrier outside with the schlieren device.
2. the schlieren device is used in high power laser light far-field focus test according to claim 1, and it is characterized in that: described diffuser comprises upper glass compressing tablet and the lower-glass compressing tablet that snaps together with the upper glass compressing tablet.
3. the schlieren device is used in high power laser light far-field focus test according to claim 2, and it is characterized in that: described diffuser also comprises seal, and described upper glass compressing tablet and lower-glass compressing tablet fasten the back and seal by seal.
4. use the schlieren device according to claim 1 or 2 or 3 described high power laser light far-field focus tests, it is characterized in that: described light barrier is that transmitance is not more than 10
-5And anti-irradiation threshold value is not less than 20J/cm
2Light barrier.
5. the schlieren device is used in high power laser light far-field focus test according to claim 4, and it is characterized in that: described light barrier is a sheet metal.
6. the schlieren device is used in high power laser light far-field focus test according to claim 5, and it is characterized in that: described light barrier is that thickness is the steel disc of 0.1mm～0.3mm.
7. the schlieren device is used in high power laser light far-field focus test according to claim 6, and it is characterized in that: described light barrier is that thickness is the steel disc of 0.2mm.
8. the schlieren device is used in high power laser light far-field focus test according to claim 7, it is characterized in that: be coated with anti-reflection film on the described diffuser.
9. use the schlieren device according to claim 2 or 3 described high power laser light far-field focus tests, it is characterized in that: the thickness of described upper glass compressing tablet or lower-glass compressing tablet is 0.3mm～1mm.
10. the schlieren device is used in high power laser light far-field focus test according to claim 9, and it is characterized in that: the thickness of described upper glass compressing tablet or lower-glass compressing tablet is 0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206370067U CN201897502U (en) | 2010-12-01 | 2010-12-01 | Schlieren device for testing far-field focus faculae of high-power laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206370067U CN201897502U (en) | 2010-12-01 | 2010-12-01 | Schlieren device for testing far-field focus faculae of high-power laser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201897502U true CN201897502U (en) | 2011-07-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206370067U Expired - Fee Related CN201897502U (en) | 2010-12-01 | 2010-12-01 | Schlieren device for testing far-field focus faculae of high-power laser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201897502U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102486405A (en) * | 2010-12-01 | 2012-06-06 | 中国科学院西安光学精密机械研究所 | Schlieren device used for test on high power laser far-field focal spot |
| CN102841452A (en) * | 2011-11-15 | 2012-12-26 | 中国科学院光电研究院 | Schlieren detecting device based on laser polarization |
| CN109724690A (en) * | 2018-12-13 | 2019-05-07 | 中国科学院西安光学精密机械研究所 | Schlieren method far-field measurement focal spot automatic reconfiguration method based on spectrum angle charting |
| CN109785426A (en) * | 2018-12-13 | 2019-05-21 | 中国科学院西安光学精密机械研究所 | The method that optimal match point fast searching based on steepest descent method realizes focal spot reconstruct |
-
2010
- 2010-12-01 CN CN2010206370067U patent/CN201897502U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102486405A (en) * | 2010-12-01 | 2012-06-06 | 中国科学院西安光学精密机械研究所 | Schlieren device used for test on high power laser far-field focal spot |
| CN102486405B (en) * | 2010-12-01 | 2014-03-26 | 中国科学院西安光学精密机械研究所 | Schlieren device used for test on high power laser far-field focal spot |
| CN102841452A (en) * | 2011-11-15 | 2012-12-26 | 中国科学院光电研究院 | Schlieren detecting device based on laser polarization |
| CN109724690A (en) * | 2018-12-13 | 2019-05-07 | 中国科学院西安光学精密机械研究所 | Schlieren method far-field measurement focal spot automatic reconfiguration method based on spectrum angle charting |
| CN109785426A (en) * | 2018-12-13 | 2019-05-21 | 中国科学院西安光学精密机械研究所 | The method that optimal match point fast searching based on steepest descent method realizes focal spot reconstruct |
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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 |
Granted publication date: 20110713 Termination date: 20141201 |
|
| EXPY | Termination of patent right or utility model |