CN201535842U - Novel high-power polarization isolator - Google Patents
Novel high-power polarization isolator Download PDFInfo
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- CN201535842U CN201535842U CN2009201825646U CN200920182564U CN201535842U CN 201535842 U CN201535842 U CN 201535842U CN 2009201825646 U CN2009201825646 U CN 2009201825646U CN 200920182564 U CN200920182564 U CN 200920182564U CN 201535842 U CN201535842 U CN 201535842U
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- isolator
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Abstract
The utility model relates to a novel high-power polarization isolator which comprises two rectangular prisms, wherein the inclined surface of one rectangular prism is provided with a layer of polarizing beam splitter, and the inclined surfaces of the two rectangular prisms are mutually matched and welded together. The rectangular surface one rectangular prism is provided with a layer of anti-reflection film, and one fourth wave plate of a true zero order is welded on the rectangular surface through the anti-reflection film. In the isolator, because a beam splitting surface is welded from two different materials, thereby preventing dissipation between media on the one hand; and simultaneously, the use scope of temperature is only decided by the polarizing beam splitter, thereby greatly improving the use power occasions of the polarization isolator.
Description
[technical field]
The utility model belongs to the optical instrument preparation field, specifically is meant a kind of novel high-power polarization isolator.
[background technology]
Laser has high coherence, directivity, high-intensity speciality, is used widely.Polarization isolator is the critical component of laser instrument, utilizes coating process to realize polarization separation, and angle sensitivity is lower, the interference of stray light that its prism structure has avoided the front and rear surfaces reflection to bring, and adjust easily, in using, high power laser light has very big advantage.Because it can use glass preparation, be fit to produce in enormous quantities, cost can significantly descend, and has very high cost performance.
Now general polarization isolator is to be coated with the multilayered medium polarization beam splitter on the optical glass prism, and the light splitting surface with two prisms glues together again, becomes a complete polarization isolator.This polarization isolator unavoidably has the bigger proportion of goods damageds because glue is two kinds of different materials with plated film when producing laser, can't be applied in high-power application scenario; Be subjected to the temperature characterisitic influence of glue itself simultaneously, also limited the usable range of isolator greatly.
[utility model content]
Technical problem to be solved in the utility model is to provide a kind of novel high-power polarization isolator, has promoted the temperature usable range greatly, can use in the high power occasion.
The utility model solves the problems of the technologies described above by the following technical solutions:
A kind of novel high-power polarization isolator comprises two right-angle prisms, has one deck polarization beam splitter on one of them right-angle prism inclined-plane, and described two right-angle prism inclined-planes match and weld together.
Have one deck anti-reflection film on the right angle face of described one of them right-angle prism, the quarter-wave plate of a true zero level is welded on this right angle face by this anti-reflection film.
Advantage of the present utility model is: because light splitting surface is that two identical materials are welded, avoided the dissipation between medium on the one hand, the simultaneous temperature usable range has promoted the use power occasion of polarization isolator greatly only by polarization beam splitter decision itself.
[description of drawings]
The utility model will be further described in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is the utility model high-power polarization spacer structures synoptic diagram.
Fig. 2 is the utility model high-power polarization isolator vertical view.
[embodiment]
See also shown in Figure 1ly, a kind of novel high-power polarization isolator comprises two right- angle prisms 10,20, has one deck polarization beam splitter on one of them right-angle prism 10 inclined-plane, and the inclined-plane of two right- angle prisms 10,20 matches and welds together.
Have one deck anti-reflection film on the right angle face of right-angle prism 10, the quarter-wave plate 30 of a true zero level is welded on this right angle face by this anti-reflection film.The quarter-wave plate 30 of this true zero level is to be formed by glass substrate and quartz substrate welding gummed, and its optical axis direction is 45 degree, as shown in Figure 2.
This product produces the effect of isolator, and the light of transmission has only the P polarization just to see through by polarizing prism, and the S reflection of polarization changes into left-handed rotatory polarization by true zero level quarter-wave plate with the light of P polarization.Left-handed rotatory polarization reflects, and becomes the rotatory polarization of dextrorotation, behind true zero level quarter-wave plate, becomes the light of S polarization, and the S polarized light is by the polarizing prism back reflection.Thereby prevent to reflect in the laser cavity interference of light to incident.
Product of the present utility model is tested, carried out the main performance index contrast with the polarization isolator of prior art, as shown in the table:
| Index | The utility model polarization isolator | The prior art polarization isolator |
| Damage threshold | ＞15Jcm 2 | ＜1J/cm 2 |
| Transmitance | ＞96％ | ＞92％ |
| Extinction ratio | 1000∶1 | 300∶1 |
| The BEAM SQUINT angle | ＜1 minute | ＜6 minutes |
As can be seen from the above table, adopt polarization isolator of the present utility model can use under the situation of very high power, the damage threshold that can bear is greater than 15J/cm
2At 20ns, under the 20Hz 1064nm lasing condition, promptly greater than 600MW/cm
2, simultaneously the transmitance of prism is increased substantially, and the raising of extinction ratio.
Claims (2)
1. novel high-power polarization isolator, it is characterized in that: comprise two right-angle prisms, have one deck polarization beam splitter on one of them right-angle prism inclined-plane, described two right-angle prism inclined-planes match and weld together.
2. a kind of novel high-power polarization isolator as claimed in claim 1 is characterized in that: have one deck anti-reflection film on the right angle face of described one of them right-angle prism, the quarter-wave plate of a true zero level is welded on this right angle face by this anti-reflection film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201825646U CN201535842U (en) | 2009-08-18 | 2009-08-18 | Novel high-power polarization isolator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201825646U CN201535842U (en) | 2009-08-18 | 2009-08-18 | Novel high-power polarization isolator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201535842U true CN201535842U (en) | 2010-07-28 |
Family
ID=42535619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201825646U Expired - Fee Related CN201535842U (en) | 2009-08-18 | 2009-08-18 | Novel high-power polarization isolator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201535842U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102230990A (en) * | 2011-06-29 | 2011-11-02 | 武汉电信器件有限公司 | Optical isolator with integrated optical splitter |
| CN106441144A (en) * | 2016-06-24 | 2017-02-22 | 天津大学 | Three-dimensional morphology measurement method for inhibiting speckles on the basis of wide-spectrum laser |
| CN106444068A (en) * | 2016-06-24 | 2017-02-22 | 天津大学 | Laser speckle inhibition method |
| CN111051963A (en) * | 2016-07-01 | 2020-04-21 | 倾斜五股份有限公司 | Head-mounted projection display with multi-layer beam splitter and color correction |
-
2009
- 2009-08-18 CN CN2009201825646U patent/CN201535842U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102230990A (en) * | 2011-06-29 | 2011-11-02 | 武汉电信器件有限公司 | Optical isolator with integrated optical splitter |
| CN106441144A (en) * | 2016-06-24 | 2017-02-22 | 天津大学 | Three-dimensional morphology measurement method for inhibiting speckles on the basis of wide-spectrum laser |
| CN106444068A (en) * | 2016-06-24 | 2017-02-22 | 天津大学 | Laser speckle inhibition method |
| CN111051963A (en) * | 2016-07-01 | 2020-04-21 | 倾斜五股份有限公司 | Head-mounted projection display with multi-layer beam splitter and color correction |
| CN111051963B (en) * | 2016-07-01 | 2022-12-06 | 倾斜五股份有限公司 | Head-mounted projection display with multi-layer beam splitter and color correction |
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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: 20100728 Termination date: 20130818 |