CN203551839U - Kilowatt high isolation collimation type optical isolator - Google Patents
Kilowatt high isolation collimation type optical isolator Download PDFInfo
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- CN203551839U CN203551839U CN201320643106.4U CN201320643106U CN203551839U CN 203551839 U CN203551839 U CN 203551839U CN 201320643106 U CN201320643106 U CN 201320643106U CN 203551839 U CN203551839 U CN 203551839U
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Abstract
The utility model discloses a kilowatt high isolation collimation type optical isolator comprising a die peeling device, a collimator, a faraday rotator a, a 1/2 wave plate a, a faraday rotator b, a 1/2 wave plate b, a beam expander, which are sequentially arranged along an incident optical axis of a positive light. A polarization beam splitter a is disposed between the collimator and the faraday rotator a. A polarization beam splitter b and a polarization beam splitter c are sequentially disposed between the 1/2 wave plate and the faraday rotator b. A polarization beam splitter d is disposed between the 1/2 wave plate b and the beam expander. An inner wall of a cooling sealing device, which is disposed in the cooling packaging device on the same side with the polarization beam splitter a and the polarization beam splitter c, is provided with a diaphragm. Compared to the prior art, the optical isolator is suitable for being used in a plurality of fields under the application conditions of the large power lasers, and is advantageous in that the working performance is stable, the inserting loss is small, the heat dissipation efficiency is high, and the isolation degree is high.
Description
Technical field
The utility model relates to a kind of optoisolator, especially a kind of multikilowatt high-isolation collimation-type optoisolator, belong to high-end Laser Processing, cut, laser bonding, laser engraving and laser 3D print etc., the application of the high-end sciemtifec and technical sphere such as laser weapon, laser radar communication and laser sensing field.
Background technology
Along with development and the laser of laser processing technology are applied and promoted in every profession and trade, some relevant optical device have been proposed to new requirement.Optoisolator is a kind of optical device that allows light to pass through along a direction, and stops in contrary direction the optical passive component that light passes through.And in high-end high power laser application, high-power optoisolator is crucial core devices, for the normal operation of high power laser provides reliable guarantee.Therefore, this multikilowatt optoisolator plays very important key effect in the high-end laser application such as Laser Processing, laser communication and sensing.The research of high performance optoisolator is also subject to the extensive concern of domestic and international relevant industries.
In the high-end laser applications such as high-end semiconductor laser, high-end image intensifer and high-end fiber laser system of processing, for the reflected light producing by face and the surface that processed from each fusion point, each optics by powerful reason, energy of reflection light is very responsive and fatal on the impact of system, backward transmission light may cause the performance of each optical device in optical system to worsen even damage, the lighter's laser instrument goes out photo-labile, and severe one is damaged laser instrument.For this reason, the effect of optoisolator is particularly important.But present stage the optoisolator power that can carry and the degree of isolation that can reach all not high enough, affected dramatically the development of high-end kilowatt level optical fiber laser.Therefore, high-end multikilowatt optoisolator and its high-isolation are breaches of improving high-end fiber laser performance.
China starts just to have many enterprises at research optoisolator from eighties of last century the eighties, and still, the optoisolator power that Current Domestic is used is still very little, reaches more than hectowatt grade optoisolator little.The technology of low power optoisolator is very ripe, but the technology of high-end powerful optoisolator is also in the stage of fumbling.The also less stables of optoisolator performance that Current Domestic great majority are used, the problem such as easily occur that insertion loss is large, radiating efficiency is low or isolation is not high, even can damage optical system when serious.Along with developing rapidly of high-end fiber laser processing industry, the performance of this kind of optoisolator has been proposed to new requirements at the higher level and challenge.In sum, develop a kind of high-end multikilowatt optoisolator and good isolation effect imperative.
Utility model content
The purpose of this utility model is to provide a kind of multikilowatt high-isolation collimation-type optoisolator, this optoisolator stable work in work, and have advantages of that insertion loss is little, radiating efficiency is high and isolation is high, can be used to well in the high-end laser optics applications such as high-power pulsed laser, high power CW laser instrument.
The technical solution of the utility model: a kind of multikilowatt high-isolation collimation-type optoisolator, along being provided with successively mode stripper, collimating apparatus, Faraday polarization apparatus a, 1/2 wave plate a, Faraday polarization apparatus b, 1/2 wave plate b and beam expander on forward light incident light axis, collimating apparatus comprises optical fiber pigtail, end cap and lens, between collimating apparatus and Faraday polarization apparatus, be provided with polarization beam apparatus a, between 1/2 wave plate and Faraday polarization apparatus b, be provided with successively polarization beam apparatus b and polarization beam apparatus c, between 1/2 wave plate b and beam expander, be provided with polarization beam apparatus d; Mode stripper, collimating apparatus, polarization beam apparatus a, Faraday polarization apparatus, 1/2 wave plate, polarization beam apparatus b, polarization beam apparatus c, Faraday polarization apparatus b, 1/2 wave plate b, polarization beam apparatus d and beam expander are all located in cooling packaging system, in cooling packaging system, are provided with diaphragm with the inwall of polarization beam apparatus a and polarization beam apparatus c mono-side.Wherein mode stripper can divest from fibre core and drain to the harmful lights such as the laser of the higher order mode transmitting inner cladding, has reduced the impact of harmful light on light propagation efficiency.The power that adopts the collimating apparatus of end cap and lens combination to carry is larger, and diaphragm can be broken up backlight, reduces light intensity in unit area, also can improve the load power of collimating apparatus.
In aforesaid this multikilowatt high-isolation collimation-type optoisolator, polarization beam apparatus a, polarization beam apparatus b, polarization beam apparatus c and polarization beam apparatus d, by 1 triangle analyzing crystal and 1 parallelogram analyzing crystal composition, are equipped with high-reflecting film on polarization beam apparatus a, polarization beam apparatus b, polarization beam apparatus c and polarization beam apparatus d.
In aforesaid this multikilowatt high-isolation collimation-type optoisolator, described polarization beam apparatus a is comprised of 2 triangle analyzing crystals and 1 parallelogram analyzing crystal, polarization beam apparatus b, polarization beam apparatus c and polarization beam apparatus d are by 1 triangle analyzing crystal and 1 parallelogram analyzing crystal composition, on polarization beam apparatus b, polarization beam apparatus c and polarization beam apparatus d, be equipped with high-reflecting film, a side of polarization beam apparatus a incident light is also provided with 45 degree reflective mirrors; In cooling packaging system, be provided with the diaphragm of F:-5～0mm with the inwall of 45 degree reflective mirror opposite positions.
In aforesaid this multikilowatt high-isolation collimation-type optoisolator, described polarization beam apparatus a is comprised of 4 triangle analyzing crystals, polarization beam apparatus b and polarization beam apparatus d are by 2 triangle analyzing crystals and 1 parallelogram analyzing crystal composition, polarization beam apparatus c is comprised of 1 triangle analyzing crystal and 1 parallelogram analyzing crystal, and polarization beam apparatus c is provided with high-reflecting film; One side of polarization beam apparatus a incident light is also provided with 45 degree reflective mirrors; In cooling packaging system, be provided with the diaphragm of F:-5～0mm with the inwall of 45 degree reflective mirror opposite positions.
In aforesaid this multikilowatt high-isolation collimation-type optoisolator, high-reflecting film and optical axis angular separation are 45 °.Polarization spectro crystal can be divided into the light that two bundles are vertical the nonpolarized light of incident, and wherein P light passes through completely, and S light is reflected by high-reflecting film with 45° angle, and exit direction becomes an angle of 90 degrees with P light; High-reflecting film can enter the reflection of S light in Faraday polarization apparatus.
In aforesaid this multikilowatt high-isolation collimation-type optoisolator, between collimating apparatus and polarization beam apparatus a, be provided with diaphragm a, between polarization beam apparatus b and polarization beam apparatus c, be provided with diaphragm b, beam expander right side is provided with diaphragm c, is provided with successively diaphragm d and cubic prism between polarization beam apparatus d and beam expander.Forward light from left to right can almost can't harm and pass through, and backlight can be blocked reflection by diaphragm, reflects away a large amount of backlights.
In aforesaid this multikilowatt high-isolation collimation-type optoisolator, described cooling packaging system comprises housing, cooling chamber, heat eliminating medium entrance and heat eliminating medium outlet, wherein one end of described housing is provided with heat eliminating medium entrance and heat eliminating medium outlet, heat eliminating medium entrance is located at the below of housing, the top of housing is located in heat eliminating medium outlet, it between the outer wall of housing and inwall, is hollow structure, outlet is connected with this hollow structure described heat eliminating medium entrance with heat eliminating medium, cooling chamber is arranged on the side in housing, cooling chamber is communicated with hollow structure, mode stripper is located in cooling chamber.Its key is that heat eliminating medium directly holds mounting parts with mode stripper with all optical element heat and contacts, and plays abundant heat conduction and heat radiation effect.
In aforesaid this multikilowatt high-isolation collimation-type optoisolator, in cooling packaging system, be provided with heat eliminating medium, heat eliminating medium can adopt water or oil.
In aforesaid this multikilowatt high-isolation collimation-type optoisolator, optical fiber pigtail and the welding of end cap phase.
Compared with conventional art, the utility model can provide a kind of multikilowatt high-isolation collimation-type optoisolator, in this optoisolator, be provided with cooling packaging system, by cooling device is set, make heat eliminating medium directly hold directly and contact with optical device heat, greatly improved radiating effect, thereby improved the stability of optoisolator, make it under long high power work state, still can keep stable work.And have advantages of that insertion loss is little, radiating efficiency is high and isolation is high, in the laser applied optics field such as high power laser that can be applicable to kilowatt.Described multikilowatt optoisolator refers to that rated power is more than 1000 watts.
By adopting bipolar design fully to realize the high-isolation of optoisolator.
By mode stripper is set, can divest from fibre core and drain to the harmful lights such as the laser of the higher order mode transmitting inner cladding, reduced the impact of harmful light on light propagation efficiency.The power that adopts the collimating apparatus of end cap and lens combination to carry is larger, and these improvements are all that the utility model can be applicable to a kilowatt key for above high power laser.
By diaphragm is set, backlight can be broken up, reduce light intensity in unit area, effectively prevent that backlight from damaging cooling packaging system.
Accompanying drawing explanation
Fig. 1, Fig. 3 and Fig. 5 are the index paths that forward light enters optoisolator;
Fig. 2, Fig. 4 and Fig. 6 are the index paths that backlight enters optoisolator.
Being labeled as in accompanying drawing: 1-diaphragm a, 2-optical fiber pigtail, 3-collimating apparatus, 4-polarization beam apparatus a, 5-Faraday polarization apparatus, 6-1/2 wave plate, 7-polarization beam apparatus b, 8-high-reflecting film, 9-polarization beam apparatus d, 10-45 degree reflective mirror, the cooling packaging system of 11-, 12-diaphragm, 13-mode stripper, 14-end cap, 15-diaphragm b, 16-four directions prism, 17-beam expander, 18-diaphragm c, 19-lens, 20-housing, 21-cooling chamber, 22-heat eliminating medium entrance, the outlet of 23-heat eliminating medium, 24-Faraday polarization apparatus b, 25-1/2 wave plate b, 26-diaphragm d, 27-polarization beam apparatus c.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described.
Principle of work of the present utility model: as shown in Fig. 1, Fig. 3 and Fig. 5, forward light enters mode stripper 13 from optical fiber pigtail 2, can divest from fibre core and drain to the harmful lights such as the laser of the higher order mode transmitting inner cladding, reduce the impact of harmful light on light propagation efficiency.Through collimating apparatus 3, enter in polarization beam apparatus a4 again, under analyzing crystal effect in polarization beam apparatus a4, light is divided into P light and S light, wherein P light enters in Faraday polarization apparatus 5 through analyzing crystal, S light is reflexed on high-reflecting film 8 by analyzing crystal, and S light is reflected and enters in Faraday polarization apparatus 5 under the effect of high-reflecting film 8.Both separate rapidly certain angle transmission and enter the Faraday polarization apparatus 5 of 45 °.By Faraday polarization apparatus, the vibration plane of P light and S light separately to same direction rotation 45 °.Postrotational P light and S light, after 1/2 wave plate 6, have all changed 45 ° to same direction again.P light now and S light enter in polarization beam apparatus b7, under the effect of polarization beam apparatus b7, by P light and S light compositing light beam, synthetic light beam enters polarization beam apparatus c27, light path is divided into P light and S light again, wherein P light enters in Faraday polarization apparatus 24 through analyzing crystal, and S light is reflexed on high-reflecting film 8 by analyzing crystal, and S light is reflected and enters in Faraday polarization apparatus 24 under the effect of high-reflecting film 8.Both separate rapidly certain angle transmission and enter the Faraday polarization apparatus 24 of 45 °.By Faraday polarization apparatus, the vibration plane of P light and S light separately to same direction rotation 45 °.Postrotational P light and S light, after 1/2 wave plate 25, have all changed 45 ° to same direction again, after P light now and S light enter polarization beam apparatus d9, are synthesized Ray Of Light.Synthetic light beam changes the path of light through cubic prism 16, the light being again synthesized amplifies light path through beam expander 17, has realized the forward transmission of light, and wherein diaphragm a1, diaphragm b15, diaphragm c17 and diaphragm d18 all filter out a part of harmful light.
As Fig. 2, shown in Fig. 4 and Fig. 6, backlight pools light beam after beam expander 17, the light converging changes path through cubic prism 16, the light that changes path passes polarization beam apparatus d9 and light is divided into P light and S light, P light and S light are again through 1/2 wave plate 25, Faraday polarization apparatus 24 and polarization beam apparatus c27 pool two-beam again by light, the diaphragm 12 that wherein light beam is cooled on packaging system 11 walls spreads and the Absorption of Medium that is cooled, reduced reverse light intensity, another beam reversal's light enters after polarization beam apparatus b7, light is divided into P light and S light again, P light and S light are through the effect of 1/2 wave plate 6, its vibration plane has changed 45 ° to same direction again separately.Due to the nonreciprocity of Faraday effect, P light and S light are by after Faraday polarization apparatus 5, and polarization direction is still to 45 ° of same direction rotations, and original like this P light and S light are entering polarization beam apparatus a4.P light is reflected and passes analyzing crystal and penetrates under the effect of high-reflecting film 8 high-reflecting films, S light is directly reflected by analyzing crystal, P light and S optocoupler synthesize Ray Of Light, light is through diaphragm 12, under the effect of diaphragm 12 and heat eliminating medium, concentrated light is disperseed to absorb, as shown in Figure 4 and Figure 6, in 45 degree reflective mirror 10 1 sides, be also provided with diaphragm 12, this diaphragm 12 also plays the light-absorbing effect that disperses, almost do not have light to enter in collimating apparatus 3, thereby reached the object of reverse high degree of isolation, wherein diaphragm a1, diaphragm b15 and diaphragm c17 filter out a large amount of harmful lights.Diaphragm 12 can make light directly enter in heat eliminating medium, discharges the energy of light.Wherein in cooling packaging system 11, be provided with heat eliminating medium, can, by the heat absorption of optoisolator generation, have improved the working environment of optoisolator, make optoisolator working stability.
Claims (9)
1. a multikilowatt high-isolation collimation-type optoisolator, it is characterized in that: along being provided with successively mode stripper (13) on forward light incident light axis, collimating apparatus (3), Faraday polarization apparatus a(5), 1/2 wave plate a(6), Faraday polarization apparatus b(24), 1/2 wave plate b(25) and beam expander (17), collimating apparatus (3) comprises optical fiber pigtail (2), end cap (14) and lens (19), between collimating apparatus (3) and Faraday polarization apparatus (5), be provided with polarization beam apparatus a(4), 1/2 wave plate (6) and Faraday polarization apparatus b(24) between be provided with successively polarization beam apparatus b(7) and polarization beam apparatus c(27), 1/2 wave plate b(25) and beam expander (17) between be provided with polarization beam apparatus d(9), mode stripper (13), collimating apparatus (3), polarization beam apparatus a(4), Faraday polarization apparatus (5), 1/2 wave plate (6), polarization beam apparatus b(7), polarization beam apparatus c(27), Faraday polarization apparatus b(24), 1/2 wave plate b(25), polarization beam apparatus d(9) and beam expander (17) be all located in cooling packaging system (11), in cooling packaging system (11) with polarization beam apparatus a(4) and polarization beam apparatus c(27) inwall of a side is provided with diaphragm (12).
2. multikilowatt high-isolation collimation-type optoisolator according to claim 1, it is characterized in that: described polarization beam apparatus a(4), polarization beam apparatus b(7), polarization beam apparatus c(27) and polarization beam apparatus d(9) by 1 triangle analyzing crystal and 1 parallelogram analyzing crystal composition, polarization beam apparatus a(4), polarization beam apparatus b(7), polarization beam apparatus c(27) and polarization beam apparatus d(9) on be equipped with high-reflecting film (8).
3. multikilowatt high-isolation collimation-type optoisolator according to claim 1, it is characterized in that: described polarization beam apparatus a(4) by 2 triangle analyzing crystals and 1 parallelogram analyzing crystal, formed, polarization beam apparatus b(7), polarization beam apparatus c(27) and polarization beam apparatus d(9) by 1 triangle analyzing crystal and 1 parallelogram analyzing crystal composition, polarization beam apparatus b(7), polarization beam apparatus c(27) and polarization beam apparatus d(9) on be equipped with high-reflecting film (8), polarization beam apparatus a(4) side of incident light is also provided with 45 degree reflective mirrors (10), in cooling packaging system (11), be provided with the diaphragm (12) of F:-5～0mm with the inwall of 45 degree reflective mirror (10) opposite positions.
4. multikilowatt high-isolation collimation-type optoisolator according to claim 1, it is characterized in that: described polarization beam apparatus a(4) by 4 triangle analyzing crystals, formed, polarization beam apparatus b(7) and polarization beam apparatus d(9) by 2 triangle analyzing crystals and 1 parallelogram analyzing crystal composition, polarization beam apparatus c(27) by 1 triangle analyzing crystal and 1 parallelogram analyzing crystal, formed polarization beam apparatus c(27) be provided with high-reflecting film (8); Polarization beam apparatus a(4) side of incident light is also provided with 45 degree reflective mirrors (10); In cooling packaging system (11), be provided with the diaphragm (12) of F:-5～0mm with the inwall of 45 degree reflective mirror (10) opposite positions.
5. according to the multikilowatt high-isolation collimation-type optoisolator described in claim 2 or 3 or 4, it is characterized in that: high-reflecting film (8) is 45 ° with optical axis included angle.
6. multikilowatt high-isolation collimation-type optoisolator according to claim 1, it is characterized in that: collimating apparatus (3) and polarization beam apparatus a(4) between be provided with diaphragm a(1), polarization beam apparatus b(7) and polarization beam apparatus c(27) between be provided with diaphragm b(15), beam expander (17) right side is provided with diaphragm c(18), polarization beam apparatus d(9) and beam expander (17) between be provided with successively diaphragm d(26) and cubic prism (16).
7. multikilowatt high-isolation collimation-type optoisolator according to claim 1, it is characterized in that: described cooling packaging system (11) comprises housing (20), cooling chamber (21), heat eliminating medium entrance (22) and heat eliminating medium outlet (23), wherein one end of described housing (20) is provided with heat eliminating medium entrance (22) and heat eliminating medium outlet (23), heat eliminating medium entrance (22) is located at the below of housing (20), the top of housing (20) is located in heat eliminating medium outlet (23), between the outer wall of housing (20) and inwall, it is hollow structure, described heat eliminating medium entrance (22) is connected with this hollow structure with heat eliminating medium outlet (23), cooling chamber (21) is arranged on the side in housing (20), cooling chamber (21) is communicated with hollow structure, mode stripper (13) is located in cooling chamber (21).
8. multikilowatt high-isolation collimation-type optoisolator according to claim 1, is characterized in that: cooling packaging system is provided with heat eliminating medium in (11).
9. multikilowatt high-isolation collimation-type optoisolator according to claim 1, is characterized in that: optical fiber pigtail (2) and end cap (14) phase welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320643106.4U CN203551839U (en) | 2013-10-17 | 2013-10-17 | Kilowatt high isolation collimation type optical isolator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320643106.4U CN203551839U (en) | 2013-10-17 | 2013-10-17 | Kilowatt high isolation collimation type optical isolator |
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| CN203551839U true CN203551839U (en) | 2014-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320643106.4U Withdrawn - After Issue CN203551839U (en) | 2013-10-17 | 2013-10-17 | Kilowatt high isolation collimation type optical isolator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103605185A (en) * | 2013-10-17 | 2014-02-26 | 深圳市创鑫激光技术有限公司 | Kilowatt-level high-isolation collimating-type optical isolator |
| CN108919424A (en) * | 2018-07-16 | 2018-11-30 | 福建海创光电有限公司 | A kind of optical circulator |
-
2013
- 2013-10-17 CN CN201320643106.4U patent/CN203551839U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103605185A (en) * | 2013-10-17 | 2014-02-26 | 深圳市创鑫激光技术有限公司 | Kilowatt-level high-isolation collimating-type optical isolator |
| CN108919424A (en) * | 2018-07-16 | 2018-11-30 | 福建海创光电有限公司 | A kind of optical circulator |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140416 Effective date of abandoning: 20150422 |