CN103487891A - On-line hectowatt isolator - Google Patents
On-line hectowatt isolator Download PDFInfo
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- CN103487891A CN103487891A CN201310444484.4A CN201310444484A CN103487891A CN 103487891 A CN103487891 A CN 103487891A CN 201310444484 A CN201310444484 A CN 201310444484A CN 103487891 A CN103487891 A CN 103487891A
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Abstract
The invention discloses an on-line hectowatt isolator which comprises a first mode stripper (1), a first optical fiber collimator (2), isolator chipware (3), a second optical fiber collimator (4) and a second mode stripper (17), wherein the first mode stripper (1), the first optical fiber collimator (2), the isolator chipware (3), the second optical fiber collimator (4) and the second mode stripper (17) are sequentially arranged along a positive light incident optical axis. The first mode stripper (1) is connected with the first optical fiber collimator (2) through an optical fiber (10), and two symmetrically-arranged reflectors (5) are arranged between the first optical fiber collimator (2) and the isolator chipware (3); the first mode stripper (1), the first optical fiber collimator (2), the isolator chipware (3), the second optical fiber collimator (4), the second mode stripper (17) and the reflectors (5) are all arranged in a water-cooled packaging system (11). The on-line hectowatt isolator has the advantages of being high in isolation degree, good in heat dissipation effect, stable in working performance and capable of being used for a more-than-hectowatt high-power pulsed laser.
Description
Technical field
The present invention relates to a kind of isolator, particularly a kind of hectowatt grade, at the line style isolator, belongs to laser field.
Background technology
Optoisolator be only allow light along a direction by and stop in contrary direction the optical passive component that light passes through.Semiconductor laser, image intensifer and fiber laser etc. are very responsive for the reflected light from connector, fusion point, wave filter etc., and may cause performance can worsen even damage, therefore need to stop reflected light with optoisolator.In optical fiber communication, can be by well isolation of light isolation by the light of optical fiber echo reflection.In the application such as light laser, optoisolator usually is used in light path and is used for interference and the damage of avoiding the echo in light path to cause light source, pumping source and other luminescent devices.
The optoisolator overwhelming majority in using at present is some low power optoisolators, often between several watts to tens watts.Because when it come to tend to because technical reason, the phenomenons such as insertion loss is large, radiating effect is bad easily occur to high power, can produce thus that isolation is not high, the adverse consequences of poor work stability, severe patient also can bring damage to laser instrument.Before this, domestic also the appearance can be for the optoisolator of the high-power pulsed laser more than 100W and 100w.
Summary of the invention
The object of the invention is to, provide a kind of hectowatt grade at the line style isolator, it has advantages of high-isolation, good heat dissipation effect and stable work in work, can be used in the above high-power pulsed laser of 100w and 100w.
Technical scheme of the present invention: a kind of hectowatt grade is at the line style isolator, comprise along setting gradually on forward light incident light axis: the first mode stripper, the first optical fiber collimator, isolator chipware, the second optical fiber collimator and the second mode stripper, mode stripper is connected with the first optical fiber collimator by optical fiber, the second optical fiber collimator is connected with the second mode stripper by optical fiber, is provided with 2 symmetrically arranged catoptrons between the first optical fiber collimator and isolator chipware; Described the first mode stripper, the first optical fiber collimator, isolator chipware, the second optical fiber collimator, the second mode stripper and catoptron all are arranged in the water-cooled packaging system.Mode stripper, for the remaining pump light of cancellation, can also divest the laser that drains to the higher order mode transmitted inner cladding from fibre core.Owing to having adopted the water-cooled packaging system, greatly improve radiating effect, thereby improved the stability of optoisolator, make it under long high power work state, still can keep stable work.The industrial use that this optoisolator is the 100W high-power pulsed laser is laid a good foundation.
Aforesaid hectowatt grade is in the line style isolator, and the angle between described 2 catoptrons and optical axis is 40 °～50 °
Aforesaid hectowatt grade is in the line style isolator, and the angle between described 2 catoptrons and optical axis is 45 °.Form a very little gap between described 2 catoptrons, the effect of diaphragm is played in this gap.
Aforesaid hectowatt grade is in the line style isolator, and described the first optical fiber collimator comprises the first patch cord and first lens, and the first patch cord is connected with the light path of isolator chipware by first lens; This second optical fiber collimator comprises the second patch cord and the second lens, and the second patch cord is connected with the light path of isolator chipware by the second lens.
Aforesaid hectowatt grade is in the line style isolator, and described isolator chipware comprises along the first birefringece crystal set gradually on forward light incident light axis, Faraday polarization apparatus, 1/2 wave plate and the second birefringece crystal.Be provided with a diaphragm between the second birefringece crystal and the second optical fiber collimator.
Aforesaid hectowatt grade is in the line style isolator, and described catoptron adopts ceramic reflecting mirror, bronze mirror or high anti-catoptron.Catoptron also can adopt the material making preferably of other reflective function.
Aforesaid hectowatt grade, in the line style isolator, also comprises magnetic tube, and described Faraday polarization apparatus is located in magnetic tube, and the first birefringece crystal and the second birefringece crystal are located at respectively the two ends of magnetic tube; The optically-active angle of Faraday polarization apparatus is 45 °.
Aforesaid hectowatt grade is in the line style isolator, and the afterbody of the described optical fiber be connected with the second optical fiber collimator with the first optical fiber collimator is equipped with end cap.This end cap adopts high-power end cap, and end cap is the high-power component for high-capacity optical fiber laser and amplifier out face Treatment Design, by the optical power density that reduces output terminal that expands to output beam, has increased the damage threshold of fiber end face.
Aforesaid hectowatt grade is in the line style isolator, and described 1/2 wave plate passes through the ultra-violet curing glue on the light inlet end face of the second birefringece crystal.
Aforesaid hectowatt grade is in the line style isolator, and the first birefringece crystal and the second birefringece crystal all adopt the YVO4 crystal.
Aforesaid hectowatt grade is in the line style isolator, described water-cooled packaging system comprises housing, waterway, water inlet and water delivering orifice, a wherein end of described housing is provided with water inlet and water delivering orifice, water inlet is located at the below of housing, water delivering orifice is located at the top of housing, it between the outer wall of housing and inwall, is hollow structure, described water inlet is connected with this hollow structure with water delivering orifice, waterway is arranged on the two ends in housing, waterway is communicated with hollow structure, and mode stripper and the second mode stripper are located in the waterway at housing two ends respectively.
Aforesaid hectowatt grade is in the line style isolator, described water-cooled packaging system comprises housing, waterway, water inlet and water delivering orifice, the two ends of described housing are equipped with water inlet and water delivering orifice, water inlet is located at the below of housing, water delivering orifice is located at the top of housing, it between the outer wall of housing and inwall, is hollow structure, described water inlet is connected with this hollow structure with water delivering orifice, waterway is arranged on the two ends in housing, waterway is communicated with hollow structure, and mode stripper and the second mode stripper are located in the waterway at housing two ends respectively.
Aforesaid hectowatt grade is in the line style isolator, and in described housing, the inwall corresponding with reflector position is provided with the diaphragm of F:-10～0mm.
Compared with prior art, structure of the present invention adopts more than can be increased to 100W by the use power of isolator, by adopting the water-cooled packaging system, effectively improved radiating effect, thereby improved the stability of optoisolator, make it under long high power work state, still can keep stable work.
By on the inwall of housing, diaphragm being set, can by the beam divergence that reflects in water, can effectively prevent that reflected light from shining directly on inwall, play on the one hand the effect of protection inwall, can more effectively dispel the heat on the other hand.
By the first mode stripper and the second mode stripper are set; first it is shelled to mould and processed before light incides collimating apparatus, divested harmful light, for example: remnant pump light; effectively the protection collimating apparatus, can also divest the laser that drains to the higher order mode transmitted inner cladding from fibre core.Adopt the collimating apparatus of end cap and lens combination can make it than the larger power of traditional collimating apparatus carrying.
By 2 catoptrons that are arranged symmetrically with are set between the first optical fiber collimator and isolator chipware, and increased by 1/2 wave plate, the power of both forward and reverse directions the present invention realized more than all can reach hectowatt, and there is no to produce because of high power too high loss, for the industrial use of hectowatt grade high-power pulsed laser is laid a good foundation.
The accompanying drawing explanation
Fig. 1 is the logical light schematic diagram of structural representation of the present invention and forward;
Fig. 2 is structural representation and the oppositely logical light schematic diagram that the present invention's one end is provided with entery and delivery port;
Fig. 3 is structural representation and the oppositely logical light schematic diagram that two ends of the present invention are equipped with entery and delivery port;
Fig. 4 is the structural representation that housing one end is provided with entery and delivery port;
Fig. 5 is the structural representation that the housing two ends are equipped with entery and delivery port.
Being labeled as in accompanying drawing: 1-the first mode stripper, 2-the first optical fiber collimator, 3-isolator chipware, 4-the second optical fiber collimator, the 5-catoptron, 6-the first birefringece crystal, 7-Faraday polarization apparatus, 8-1/2 wave plate, 9-the second birefringece crystal, 10-optical fiber, 11-water-cooled packaging system, 12-the first patch cord, the 13-first lens, 14-the second patch cord, 15-the second lens, 16-magnetic tube, 17-the second mode stripper, 18-end cap, 19-diaphragm, 20-housing, the 21-waterway, 22-water inlet, 23-water delivering orifice.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail, but not as the present invention being done to the foundation of any restriction.
Embodiments of the invention 1: as shown in Figure 1, a kind of hectowatt grade is at the line style isolator, comprise along being provided with successively on forward light incident light axis: the first mode stripper 1, the first optical fiber collimator 2, isolator chipware 3, the second optical fiber collimator 4 and the second mode stripper 17, the first mode stripper 1 is connected with the first optical fiber collimator 2 by optical fiber 10, is provided with 2 symmetrically arranged catoptrons 5 between the first optical fiber collimator 2 and isolator chipware 3; Angle between 2 catoptrons 5 and optical axis is 45 °, and 2 catoptrons 5 all adopt the ceramic reflecting mirror; Described the first mode stripper 1, the first optical fiber collimator 2, isolator chipware 3, the second optical fiber collimator 4, the second mode stripper 17 and catoptron 5 all are arranged in water-cooled packaging system 11.
The first optical fiber collimator 2 comprises that the first patch cord 12 and first lens 13, the first patch cords 12 are connected with the light path of isolator chipware 3 by first lens 13; This second optical fiber collimator 4 comprises that the second patch cord 14 and the second lens 15, the second patch cords 14 are connected with the light path of isolator chipware 3 by the second lens 15.
Described isolator chipware 3 comprises along the first birefringece crystal 6 set gradually on forward light incident light axis, Faraday polarization apparatus 7,1/2 wave plate 8 and the second birefringece crystal 9; The optically-active angle of described Faraday polarization apparatus 7 is 45 °; Described 1/2 wave plate 8 passes through the ultra-violet curing glue on the light inlet end face of the second birefringece crystal 9.Be provided with a diaphragm between the second birefringece crystal 9 and the second optical fiber collimator 4.
The afterbody of the optical fiber 10 be connected with the second optical fiber collimator 4 with the first optical fiber collimator 2 is equipped with end cap 18.
Also comprise magnetic tube 16, described Faraday polarization apparatus 7 is located in magnetic tube 16, and the first birefringece crystal 6 and the second birefringece crystal 9 are located at respectively the two ends of magnetic tube 16.The first birefringece crystal 6 and the second birefringece crystal 9 all adopt the YVO4 crystal.
As shown in Figure 4, described water-cooled packaging system 11 comprises housing 20, waterway 21, water inlet 22 and water delivering orifice 23, a wherein end of described housing 20 is provided with water inlet 22 and water delivering orifice 23, water inlet 22 is located at the below of housing 20, water delivering orifice 23 is located at the top of housing 20, it between the outer wall of housing 20 and inwall, is hollow structure, described water inlet 22 is connected with this hollow structure with water delivering orifice 23, waterway 21 is arranged on the two ends in housing 20, waterway 21 is communicated with hollow structure, the first mode stripper 1 and the second mode stripper 17 are located at respectively in the waterway 21 at housing 20 two ends.
In described housing 20, the inwall corresponding with catoptron 5 positions is provided with the diaphragm 19 of F:-10mm.
Embodiments of the invention 2: as shown in Figure 1, a kind of hectowatt grade is at the line style isolator, comprise along being provided with successively on forward light incident light axis: the first mode stripper 1, the first optical fiber collimator 2, isolator chipware 3, the second optical fiber collimator 4 and the second mode stripper 17, the first mode stripper 1 is connected with the first optical fiber collimator 2 by optical fiber 10, is provided with 2 symmetrically arranged catoptrons 5 between the first optical fiber collimator 2 and isolator chipware 3; Angle between 2 catoptrons 5 and optical axis is 40 °, and 2 catoptrons 5 all adopt bronze mirror; Described the first mode stripper 1, the first optical fiber collimator 2, isolator chipware 3, the second optical fiber collimator 4, the second mode stripper 17 and catoptron 5 all are arranged in water-cooled packaging system 11.
The first optical fiber collimator 2 comprises that the first patch cord 12 and first lens 13, the first patch cords 12 are connected with the light path of isolator chipware 3 by first lens 13; This second optical fiber collimator 4 comprises that the second patch cord 14 and the second lens 15, the second patch cords 14 are connected with the light path of isolator chipware 3 by the second lens 15.
Described isolator chipware 3 comprises along the first birefringece crystal 6 set gradually on forward light incident light axis, Faraday polarization apparatus 7,1/2 wave plate 8 and the second birefringece crystal 9; The optically-active angle of described Faraday polarization apparatus 7 is 45 °; Described 1/2 wave plate 8 passes through the ultra-violet curing glue on the light inlet end face of the second birefringece crystal 9.
The afterbody of the optical fiber 10 be connected with the second optical fiber collimator 4 with the first optical fiber collimator 2 is equipped with end cap 18.
Also comprise magnetic tube 16, described Faraday polarization apparatus 7 is located in magnetic tube 16, and the first birefringece crystal 6 and the second birefringece crystal 9 are located at respectively the two ends of magnetic tube 16.The first birefringece crystal 6 and the second birefringece crystal 9 all adopt the YVO4 crystal.
As shown in Figure 4, described water-cooled packaging system 11 comprises housing 20, waterway 21, water inlet 22 and water delivering orifice 23, a wherein end of described housing 20 is provided with water inlet 22 and water delivering orifice 23, water inlet 22 is located at the below of housing 20, water delivering orifice 23 is located at the top of housing 20, it between the outer wall of housing 20 and inwall, is hollow structure, described water inlet 22 is connected with this hollow structure with water delivering orifice 23, waterway 21 is arranged on the two ends in housing 20, waterway 21 is communicated with hollow structure, the first mode stripper 1 and the second mode stripper 17 are located at respectively in the waterway 21 at housing 20 two ends.
In described housing 20, the inwall corresponding with catoptron 5 positions is provided with the diaphragm 19 of F:-5mm.
Embodiments of the invention 3: as shown in Figure 3, a kind of hectowatt grade is at the line style isolator, comprise along being provided with successively on forward light incident light axis: the first mode stripper 1, the first optical fiber collimator 2, isolator chipware 3, the second optical fiber collimator 4 and the second mode stripper 17, the first mode stripper 1 is connected with the first optical fiber collimator 2 by optical fiber 10, is provided with 2 symmetrically arranged catoptrons 5 between the first optical fiber collimator 2 and isolator chipware 3; Angle between 2 catoptrons 5 and optical axis is 50 °, and 2 catoptrons 5 all adopt high anti-catoptron; Described the first mode stripper 1, the first optical fiber collimator 2, isolator chipware 3, the second optical fiber collimator 4, the second mode stripper 17 and catoptron 5 all are arranged in water-cooled packaging system 11.
Described water-cooled packaging system 11 comprises top cooling water pipe and bottom cooling water pipe, and described top cooling water pipe is rising pipe, and the bottom cooling water pipe is water inlet pipe; In described water-cooled packaging system 11, the inwall corresponding with catoptron 5 positions is provided with the diaphragm 19 of F:0mm.
The first optical fiber collimator 2 comprises that the first patch cord 12 and first lens 13, the first patch cords 12 are connected with the light path of isolator chipware 3 by first lens 13; This second optical fiber collimator 4 comprises that the second patch cord 14 and the second lens 15, the second patch cords 14 are connected with the light path of isolator chipware 3 by the second lens 15.
Described isolator chipware 3 comprises along the first birefringece crystal 6 set gradually on forward light incident light axis, Faraday polarization apparatus 7,1/2 wave plate 8 and the second birefringece crystal 9; The optically-active angle of described Faraday polarization apparatus 7 is 45 °; Described 1/2 wave plate 8 passes through the ultra-violet curing glue on the light inlet end face of the second birefringece crystal 9.
The afterbody of the optical fiber 10 be connected with the second optical fiber collimator 4 with the first optical fiber collimator 2 is equipped with end cap 18.
Also comprise magnetic tube 16, described Faraday polarization apparatus 7 is located in magnetic tube 16, and the first birefringece crystal 6 and the second birefringece crystal 9 are located at respectively the two ends of magnetic tube 16.The first birefringece crystal 6 and the second birefringece crystal 9 all adopt the YVO4 crystal.
As shown in Figure 5, described water-cooled packaging system 11 comprises housing 20, waterway 21, water inlet 22 and water delivering orifice 23, the two ends of described housing 20 are equipped with water inlet 22 and water delivering orifice 23, water inlet 22 is located at the below of housing 20, water delivering orifice 23 is located at the top of housing 20, it between the outer wall of housing 20 and inwall, is hollow structure, described water inlet 22 is connected with this hollow structure with water delivering orifice 23, waterway 21 is arranged on the two ends in housing 20, waterway 21 is communicated with hollow structure, the first mode stripper 1 and the second mode stripper 17 are located at respectively in the waterway 21 at housing 20 two ends.
In described housing 20, the inwall corresponding with catoptron 5 positions is provided with the diaphragm 19 of F:0mm.
Principle of work of the present invention: as shown in Figure 1, light positive is to when transmission, and light enters the first optical fiber collimator 2 by the first mode stripper 1 by end cap 18, and the light beam of transmission in optical fiber 10 is converted into to collimated light, improves coupling efficiency.Then light enters the first birefringece crystal 6, is divided into o light and e light, and both separate rapidly the certain angle transmission and enter the Faraday polarization apparatus 7 that the anglec of rotation is 45 °.By Faraday polarization apparatus 7, the vibration plane of o light and e light separately to same direction rotation 45 °.Postrotational o light and e light, after 1/2 wave plate 8, have all changed 45 ° to same direction again.O light now and e light enter the second birefringece crystal 9, close light and incide the second optical fiber collimator 4 collimation bright dippings, have realized the forward transmission of light.
As shown in Figure 2, when light path is reverse, at first light inject the second collimating apparatus 4 by the second mode stripper 17 and end cap 18, and then incide in the second birefringece crystal 9, is divided into fast o light and e light.The o light returned and e light are through the effect of 1/2 wave plate 8, and its vibration plane has changed 45 ° to same direction again separately.Nonreciprocity due to Faraday effect, o light by 1/2 wave plate 8 and the vibration plane of e light light beam towards the positive direction the light rotation direction rotation 45 °, the two separating light beam o light e light that now return are with respect to the first birefringece crystal 6, because the change of entering surface makes two separating light beams no longer along original light path, pool a light beam, make on the contrary the distance of its separation increase.After through the reflection of the catoptron 5 between the first optical fiber collimator 2 and the first birefringece crystal 6, o light and e light are reflected away separately with the direction perpendicular to 90 °, optical axis respectively, to such an extent as to reflected light can not be coupled in the first optical fiber collimator 2 again, thereby reached the target of reverse isolation.O light and e light perpendicular to optical axis incide respectively on the diaphragm 19 be arranged on housing 20 inwalls, because diaphragm 19 adopts negative lens, divergence of beam can be gone out, and the heat of o light and e light is distributed in water uniformly.
The heat produced in these two processes, through the circulation of water-cooled packaging system 11 interior water, take out of rapidly, thereby reached good radiating effect.
Claims (10)
1. a hectowatt grade is at the line style isolator, comprise along setting gradually on forward light incident light axis: the first mode stripper (1), the first optical fiber collimator (2), isolator chipware (3), the second optical fiber collimator (4) and the second mode stripper (17), the first mode stripper (1) is connected with the first optical fiber collimator (2) by optical fiber (10), it is characterized in that: between the first optical fiber collimator (2) and isolator chipware (3), be provided with 2 symmetrically arranged catoptrons (5); Described the first mode stripper (1), the first optical fiber collimator (2), isolator chipware (3), the second optical fiber collimator (4), the second mode stripper (17) and catoptron (5) all are arranged in water-cooled packaging system (11).
2. hectowatt grade according to claim 1, at the line style isolator, is characterized in that: the angle between described 2 catoptrons (5) and optical axis is 40 °～50 °; Described catoptron (5) adopts ceramic reflecting mirror, bronze mirror or high anti-catoptron.
3. hectowatt grade according to claim 1 is at the line style isolator, it is characterized in that: described the first optical fiber collimator (2) comprises the first patch cord (12) and first lens (13), and the first patch cord (12) is connected with the light path of isolator chipware (3) by first lens (13); This second optical fiber collimator (4) comprises the second patch cord (14) and the second lens (15), and the second patch cord (14) is connected with the light path of isolator chipware (3) by the second lens (15).
According to claim 1 or 2 or 3 described hectowatt grades at the line style isolator, it is characterized in that: described isolator chipware (3) comprises along the first birefringece crystal (6) set gradually on forward light incident light axis, Faraday polarization apparatus (7), 1/2 wave plate (8) and the second birefringece crystal (9); Described 1/2 wave plate (8) passes through the ultra-violet curing glue on the light inlet end face of the second birefringece crystal (9).
5. hectowatt grade according to claim 4 is at the line style isolator, it is characterized in that: also comprise magnetic tube (16), described Faraday polarization apparatus (7) is located in magnetic tube (16), and the first birefringece crystal (6) and the second birefringece crystal (9) are located at respectively the two ends of magnetic tube (16); The optically-active angle of Faraday polarization apparatus (7) is 45 °.
6. hectowatt grade according to claim 5, at the line style isolator, is characterized in that: the afterbody of the described optical fiber (10) be connected with the second optical fiber collimator (4) with the first optical fiber collimator (2) is equipped with end cap (18).
7. hectowatt grade according to claim 4, at the line style isolator, is characterized in that: the first birefringece crystal (6) and the second birefringece crystal (9) all adopt the YVO4 crystal.
8. hectowatt grade according to claim 1 is at the line style isolator, it is characterized in that: described water-cooled packaging system (11) comprises housing (20), waterway (21), water inlet (22) and water delivering orifice (23), a wherein end of described housing (20) is provided with water inlet (22) and water delivering orifice (23), water inlet (22) is located at the below of housing (20), water delivering orifice (23) is located at the top of housing (20), between the outer wall of housing (20) and inwall, it is hollow structure, described water inlet (22) is connected with this hollow structure with water delivering orifice (23), waterway (21) is arranged on the two ends in housing (20), waterway (21) is communicated with hollow structure, the first mode stripper (1) and the second mode stripper (17) are located at respectively in the waterway (21) at housing (20) two ends.
9. hectowatt grade according to claim 1 is at the line style isolator, it is characterized in that: described water-cooled packaging system (11) comprises housing (20), waterway (21), water inlet (22) and water delivering orifice (23), the two ends of described housing (20) are equipped with water inlet (22) and water delivering orifice (23), water inlet (22) is located at the below of housing (20), water delivering orifice (23) is located at the top of housing (20), between the outer wall of housing (20) and inwall, it is hollow structure, described water inlet (22) is connected with this hollow structure with water delivering orifice (23), waterway (21) is arranged on the two ends in housing (20), waterway (21) is communicated with hollow structure, the first mode stripper (1) and the second mode stripper (17) are located at respectively in the waterway (21) at housing (20) two ends.
10. hectowatt grade according to claim 8 or claim 9, at the line style isolator, is characterized in that: in described housing (20), the inwall corresponding with catoptron (5) position is provided with the diaphragm (19) of F:-10～0mm.
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| CN105904085A (en) * | 2016-07-07 | 2016-08-31 | 中国科学院半导体研究所 | Semiconductor laser processing system |
| CN106443887A (en) * | 2016-10-09 | 2017-02-22 | 武汉锐科光纤激光技术股份有限公司 | Feedback optical isolator for high power all-fiber laser |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104142535A (en) * | 2014-08-26 | 2014-11-12 | 鞍山创鑫激光技术有限公司 | Liquid-cooled hectowatt-level multimode-fiber online opto-isolator |
| CN105904085A (en) * | 2016-07-07 | 2016-08-31 | 中国科学院半导体研究所 | Semiconductor laser processing system |
| CN106443887A (en) * | 2016-10-09 | 2017-02-22 | 武汉锐科光纤激光技术股份有限公司 | Feedback optical isolator for high power all-fiber laser |
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