CN102437503A - Planar four-path solid state laser device - Google Patents
Planar four-path solid state laser device Download PDFInfo
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- CN102437503A CN102437503A CN2011103961327A CN201110396132A CN102437503A CN 102437503 A CN102437503 A CN 102437503A CN 2011103961327 A CN2011103961327 A CN 2011103961327A CN 201110396132 A CN201110396132 A CN 201110396132A CN 102437503 A CN102437503 A CN 102437503A
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Abstract
The invention discloses a planar four-path solid state laser device. Polarizing films are used for realizing the polarization of solid laser and the synthesis of four optical paths. A rotating mirror driven by a motor is used for realizing the synthesis of four planar solid state laser paths. The planar four-path solid state laser device has the advantages of simple structure, relatively lower cost, high fiber coupling reliability, high power, high repetition frequency and high single pulse energy, and is easy to manufacture and use.
Description
Technical field
The present invention relates to field of laser devices, be specially a kind of plane four road solid-state laser apparatus.
Background technology
Solid State Laser therapy apparatuses such as holmium laser, erbium laser, green laser all are with the laser aid of laser crystal as operation material, and being widely used in medical science does not have in wound or the Minimally Invasive Surgery.
With holmium laser is example, and in the prior art, section's doctor people space four road holmium laser aids, vibration mirror scanning four road holmium laser aids, motor four road holmium laser aids are four road several frequently seen holmium laser aid schemes.
As shown in Figure 3, section's doctor people space four road holmium laser aids are combined by top two-way and following two-way laser aid.Section doctor people space each road emitted laser of four road holmium laser aids reflexes on the wedge shape mirror through two completely reflecting mirrors in the light path separately; Rotation through the wedge shape mirror is pressed the light-emitting directions that the bright dipping sequencing is pressed optical axis a with four road light, again through the output of condenser lens coupled into optical fibres.Section's doctor people space four road holmium laser aid complex structures, light path debug difficulties, maintenance difficult; The spot diameter that the condenser lens place forms is bigger, is difficult under high single pulse energy, be coupled in the thin optic fibre, and can only takes turns the single channel bright dipping; And the maximum single pulse energy of output is lower, and 4.0J is only arranged.
As shown in Figure 4, vibration mirror scanning four road holmium laser aids use galvanometer with four tunnel laser-bounces to optical fiber.Use in vibration mirror scanning four road holmium laser aids galvanometer with laser-bounce to optical fiber, cost is higher, optical fiber coupling poor reliability, and vibration mirror scanning four road holmium laser aids also can only take turns the single channel bright dipping, the maximum single pulse energy of output is lower, and 3.8J is only arranged.
As shown in Figure 5, motor four road holmium laser aids utilize a plurality of optical mirror slips by servomotor control that four road laser are sent in the condenser lens, and are coupled to optical fiber through condenser lens.Motor four road holmium laser aids are owing to many servomotors of use, so control system is complicated, and it is very high that three servomotor times are upward coordinated to control requirement; The coupling poor reliability; Three servomotor costs are very high, and the maximum single pulse energy of output is lower, and 4.0J is only arranged.
It is thus clear that the large power solid laser device ubiquity single pulse energy of prior art is low, optical fiber coupling poor reliability, cost is high, and problems such as complex structure maintenance difficult have restricted the application of large power solid laser therapy apparatus in medical science.
Summary of the invention
The object of the invention provides a kind of plane four road solid-state laser apparatus, and is low with the large power solid laser device single pulse energy that solves prior art, optical fiber coupling poor reliability, and cost is high, the problem of complex structure maintenance difficult.
In order to achieve the above object, the technical scheme that the present invention adopted is:
A kind of plane four road solid-state laser apparatus; Comprise two double light path modules that structure is identical; It is characterized in that: each double light path module comprises main optical path and sidelight road respectively; The sidelight road comprises first laser crystal; And first polarizer, first front cavity mirror, the total reflective mirror that are successively set on first laser crystal emitting light path the place ahead, main optical path comprises second laser crystal, and second polarizer, second front cavity mirror, the 3rd polarizer that are successively set on second laser crystal emitting light path the place ahead; In each double light path module; The second laser crystal emergent light light path cocurrent and parallel in the first laser crystal emergent light light path and the main optical path in the sidelight road, and total reflective mirror reflection direction the 3rd polarizer in main optical path in the sidelight road are in each double light path module; The first laser crystal emergent light is successively through being reflexed to the 3rd polarizer in the main optical path by total reflective mirror behind first polarizer, first front cavity mirror and being reflected by the 3rd polarizer in the sidelight road; The second laser crystal emergent light is crossed the 3rd polarizer and is combined into a branch ofly by the emergent light of the 3rd polarizer reflection with the sidelight road through transmission behind second polarizer, second front cavity mirror successively in the main optical path, closes Shu Guang as output light, perhaps output respectively in each double light path module; Two double light path module output light light path cocurrent and parallels; Wherein first double light path module output light light path the place ahead is disposed with by motor-driven revolving mirror, condenser lens, optical fiber; Second double light path module output light light path the place ahead is provided with the 45 ° total reflective mirrors of reflecting surface towards revolving mirror; Have light transmission part and photo-emission part branch on the said revolving mirror; The light transmission that the motor-driven revolving mirror turns to revolving mirror partly is positioned on first double light path module output light light path; First double light path module output light passes from the revolving mirror throughhole portions, and the motor driven in rotation mirror photo-emission part that turns to revolving mirror again divides relatively with 45 degree total reflective mirrors, and second double light path module output light is reflexed to revolving mirror by 45 degree total reflective mirrors; Be rotated the same light path of output light of passing revolving mirror with first double light path module after the mirroring again, the output light of first, second double light path module is incident to optical fiber through behind the condenser lens respectively.
Described a kind of plane four road solid-state laser apparatus; It is characterized in that: in each double light path module; Second polarizer, the 3rd polarizer of main optical path are parallel to each other; And second polarizer, the 3rd polarizer are placed with respect to the second laser crystal emergent light light path Brewster's angle in the main optical path respectively; First polarizer on sidelight road and the spatially orthogonal thereto relation of second polarizer of main optical path, and first polarizer on sidelight road is placed with respect to the first laser crystal emergent light light path Brewster's angle in the sidelight road.
Described a kind of plane four road solid-state laser apparatus, it is characterized in that: said optical fiber is positioned on the condenser lens focus.
Described a kind of plane four road solid-state laser apparatus; It is characterized in that: in each double light path module; The second laser crystal emergent light forms the Tp polarised light after through second polarizer, second front cavity mirror in the main optical path, and the first laser crystal emergent light forms the Ts polarised light after through first polarizer, first front cavity mirror in the sidelight road.
Described a kind of plane four road solid-state laser apparatus is characterized in that: in each double light path module, total reflective mirror all is installed on the three-dimensional adjustable shelf.
Described a kind of plane four road solid-state laser apparatus; It is characterized in that: said revolving mirror comprises metallic plate; Symmetry has through hole on the metallic plate; 45 ° of total reflective mirrors are installed in one of them through hole, and 45 ° of total reflective mirrors are the photo-emission part branch in the revolving mirror, and the through hole that 45 ° of total reflective mirrors are not installed is the light transmission part.
Among the present invention; The polarizer that adopts quadrature to place in the double light path module of every road respectively; Produce the Tp of cross-polarization and the laser beam of Ts component, use polarizer again and close the bundle back, realize that space main, the sidelight road is synthetic as output light; Two-way double light path module again the revolving mirror that drives of application of motor, 45 ° of total reflective mirrors time of realizing two-way double light path modules synthetic, alternately bright dipping.
The present invention is simple in structure, and cost is lower, can export simultaneously by two-way; With holmium laser is example, and maximum single pulse energy reaches 7.2J, and the four tunnel synthetic holmium laser high power high repetition frequencies of realizing are exported; The hot spot maximum gauge is 5.5mm at the condenser lens place; Can use 85 watts of holmium laser of diameter 200 micron fiber output, optical fiber coupling reliability is high, and this is that existing other high-power holmium laser aids are beyond one's reach.
Description of drawings
Fig. 1 is a light path principle figure of the present invention.
Fig. 2 is the revolving mirror structural representation.
Fig. 3 is section doctor people space four road holmium laser apparatus light path schematic diagrams in the prior art.
Fig. 4 is vibration mirror scanning four road holmium laser apparatus light path schematic diagrams in the prior art.
Fig. 5 is motor four road holmium laser apparatus light path schematic diagrams in the prior art.
Embodiment
As shown in Figure 1.The present invention includes double light path module I and double light path module ii.
In the double light path module I; The sidelight road comprises laser crystal 2; And be successively set on laser crystal 2 emitting light path the place aheads polarizer 3, front cavity mirror 4, be installed in the total reflective mirror 5 on the three-dimensional adjustable shelf; Main optical path comprises laser crystal 7; And the polarizer 8, front cavity mirror 9, the polarizer 10 that are successively set on laser crystal 7 emitting light path the place aheads; Laser crystal 7 emergent light light path cocurrent and parallels in laser crystal 2 emergent light light paths and the main optical path in the sidelight road; And total reflective mirror 5 reflectings surface polarizer 10 in main optical path in the sidelight road, in the sidelight road laser crystal 7 emergent lights successively through polarizer 8, front cavity mirror 9 backs by total reflective mirror 5 reflex in the main optical path polarizer 10 and by polarizer 10 reflections, laser crystal 7 emergent lights are crossed polarizer 10 and are combined into a branch of as output light a by the emergent light of polarizer 10 reflections with the sidelight road through polarizer 8, front cavity mirror 9 back transmissions successively in the main optical path.
In the double light path module I, laser crystal 2,7 rears in master, the sidelight road are respectively arranged with Effect of Back-Cavity Mirror 1,6.Polarizer 8, the polarizer 10 of main optical path are parallel to each other; And polarizer 8, polarizer 10 are placed with respect to the 2 emergent light light path Brewster's angles of laser crystal in the main optical path respectively; The polarizer 3 on sidelight road and the spatially orthogonal thereto relation of polarizer 8 of main optical path, and the polarizer 3 on sidelight road is placed with respect to the 2 emergent light light path Brewster's angles of laser crystal in the sidelight road.
In the double light path module I, total reflective mirror 5 is installed on the three-dimensional adjustable shelf, realizes the rotation of total reflective mirror 5 bidimensionals, the one dimension translation.Through regulating three-dimensional adjustable shelf, make Ts1 polarised light and Tp1 polarised light on polarizer 10, close bundle and be output light a.
In the double light path module ii; The sidelight road comprises laser crystal 17; And be successively set on laser crystal 17 emitting light path the place aheads polarizer 18, front cavity mirror 19, be installed in the total reflective mirror 20 on the three-dimensional adjustable shelf; Main optical path comprises laser crystal 12; And the polarizer 13, front cavity mirror 14, the polarizer 15 that are successively set on laser crystal 12 emitting light path the place aheads; Laser crystal 12 emergent light light path cocurrent and parallels in laser crystal 17 emergent light light paths and the main optical path in the sidelight road; And total reflective mirror 20 reflectings surface polarizer 15 in main optical path in the sidelight road, in the sidelight road laser crystal 17 emergent lights successively through polarizer 18, front cavity mirror 19 backs by total reflective mirror 20 reflex in the main optical path polarizer 15 and by polarizer 15 reflections, laser crystal 12 emergent lights are crossed polarizer 15 and are combined into a branch of as output light b by the emergent light of polarizer 15 reflections with the sidelight road through polarizer 13, front cavity mirror 14 back transmissions successively in the main optical path.
In the double light path module ii, laser crystal 12,17 rears in master, the sidelight road are respectively arranged with Effect of Back-Cavity Mirror 11,16.Polarizer 13, the polarizer 15 of main optical path are parallel to each other; And polarizer 13, polarizer 15 are placed with respect to the 12 emergent light light path Brewster's angles of laser crystal in the main optical path respectively; The polarizer 18 on sidelight road and the spatially orthogonal thereto relation of polarizer 13 of main optical path, and the polarizer 18 on sidelight road is placed with respect to the 17 emergent light light path Brewster's angles of laser crystal in the sidelight road.
In the double light path module ii, total reflective mirror 20 is installed on the three-dimensional adjustable shelf, realizes the rotation of total reflective mirror 20 bidimensionals, the one dimension translation.Through regulating three-dimensional adjustable shelf, make Ts2 polarised light and Tp2 polarised light on polarizer 15, close bundle and be output light b.
Double light path module I, II output light a, b light path cocurrent and parallel, wherein double light path module I output light a light path the place ahead is disposed with revolving mirror through hole 22, condenser lens 24, the optical fiber 25 that is driven by servomotor 21, and optical fiber 25 is positioned on condenser lens 24 focuses.Double light path module ii output light b light path the place ahead is provided with the 45 ° total reflective mirrors 23 of reflection direction towards revolving mirror 22; Have light transmission part and photo-emission part branch on the revolving mirror 22; The throughhole portions that servomotor 21 driven in rotation mirrors 22 turn to revolving mirror 22 is positioned on the double light path module I output light a light path; Double light path module I output light a passes from revolving mirror 22 through holes; Servomotor 21 again driven in rotation mirror 22 to turn to the mirror portion of revolving mirror 22 relative with 45 ° of total reflective mirrors 23; Double light path module ii output light b is reflexed to revolving mirror 22 by 45 ° of total reflective mirrors, is rotated the same light path of output light that mirror 22 reflection backs and double light path module I are passed revolving mirror 22 again, and double light path module I, II are combined into a branch of output light and are incident to optical fiber 25 through behind the condenser lens 24.
As shown in Figure 2.Revolving mirror 22 comprises aluminium sheet 22A; Aluminium sheet 22A goes up symmetry and has the light through hole; 45 ° of total reflective mirror 22B are installed in one of them light through hole, and 45 degree total reflective mirror 22B are the photo-emission part branch in the revolving mirror 22, and the light through hole 22C that 45 degree total reflective mirror 22B are not installed is the light transmission part.
Claims (6)
1. plane four road solid-state laser apparatus; Comprise two double light path modules that structure is identical; It is characterized in that: each double light path module comprises main optical path and sidelight road respectively; The sidelight road comprises first laser crystal, and is successively set in first polarizer, first front cavity mirror, each double light path module of total reflective mirror in first laser crystal emitting light path the place ahead, and the laser crystal rear in main, the sidelight road is provided with Effect of Back-Cavity Mirror; Main optical path comprises second laser crystal; And second polarizer, second front cavity mirror, the 3rd polarizer that are successively set on second laser crystal emitting light path the place ahead, in each double light path module, the second laser crystal emergent light light path cocurrent and parallel in the first laser crystal emergent light light path and the main optical path in the sidelight road; And total reflective mirror reflection direction the 3rd polarizer in main optical path in the sidelight road; In each double light path module, in the sidelight road the first laser crystal emergent light successively through behind first polarizer, first front cavity mirror by total reflective mirror reflex in the main optical path the 3rd polarizer and by the 3rd polarizer reflection, the second laser crystal emergent light is crossed the 3rd polarizer and is combined into a branch of with the sidelight road by the emergent light of the 3rd polarizer reflection through transmission behind second polarizer, second front cavity mirror successively in the main optical path; In each double light path module close Shu Guang as output light, perhaps respectively output; Two double light path module output light light path cocurrent and parallels; Wherein first double light path module output light light path the place ahead is disposed with by motor-driven revolving mirror, condenser lens, optical fiber; Second double light path module output light light path the place ahead is provided with the 45 ° total reflective mirrors of reflection direction towards revolving mirror; The throughhole portions and the photo-emission part branch that have light transmission on the said revolving mirror; When throughhole portions that the motor-driven revolving mirror turns to revolving mirror is positioned on first double light path module output light light path; First double light path module output light passes from the revolving mirror throughhole portions; And the photo-emission part that turns to revolving mirror when the motor-driven revolving mirror divides when relative with 45 ° of total reflective mirrors, and the output light that second the double light path module output light that is reflexed to revolving mirror by 45 ° of total reflective mirrors is rotated after the mirroring again with first double light path module is passed revolving mirror becomes same light path, and the output light of first, second double light path module is incident to optical fiber after passing through condenser lens respectively.
2. a kind of plane according to claim 1 four road solid-state laser apparatus; It is characterized in that: in each double light path module; Second polarizer, the 3rd polarizer of main optical path are parallel to each other; And second polarizer, the 3rd polarizer are placed with respect to the second laser crystal emergent light light path Brewster's angle in the main optical path respectively; First polarizer on sidelight road and the spatially orthogonal thereto relation of second polarizer of main optical path, and first polarizer on sidelight road is placed with respect to the first laser crystal emergent light light path Brewster's angle in the sidelight road.
3. a kind of plane according to claim 1 four road solid-state laser apparatus, it is characterized in that: said optical fiber is positioned on the condenser lens focus.
4. a kind of plane according to claim 1 four road solid-state laser apparatus; It is characterized in that: in each double light path module; The second laser crystal emergent light forms the Tp polarised light after through second polarizer, second front cavity mirror in the main optical path, and the first laser crystal emergent light forms the Ts polarised light after through first polarizer, first front cavity mirror in the sidelight road.
5. a kind of plane according to claim 1 four road solid-state laser apparatus, it is characterized in that: in each double light path module, total reflective mirror is installed on the three-dimensional adjustable shelf respectively.
6. a kind of plane according to claim 1 four road solid-state laser apparatus; It is characterized in that: said revolving mirror comprises metallic plate; Symmetry has the light through hole on the metallic plate; 45 ° of total reflective mirrors are installed in one of them light through hole, and 45 ° of total reflective mirrors are the photo-emission part branch in the revolving mirror, and the light through hole that 45 ° of total reflective mirrors are not installed is the light transmission part.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110396132 CN102437503B (en) | 2011-12-02 | 2011-12-02 | Planar four-path solid state laser device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110396132 CN102437503B (en) | 2011-12-02 | 2011-12-02 | Planar four-path solid state laser device |
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| CN102437503A true CN102437503A (en) | 2012-05-02 |
| CN102437503B CN102437503B (en) | 2013-02-20 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103280692A (en) * | 2013-06-03 | 2013-09-04 | 哈尔滨工业大学 | 2-micrometer solid laser device operating based on polarization beam combining manner |
| CN104659641A (en) * | 2015-02-13 | 2015-05-27 | 合肥大族科瑞达激光设备有限公司 | Four-way holmium laser with four-cavity space |
| CN104949753A (en) * | 2015-06-29 | 2015-09-30 | 中国原子能科学研究院 | Real-time monitoring system device for intense laser energy |
| CN107845943A (en) * | 2017-11-24 | 2018-03-27 | 合肥大族科瑞达激光设备有限公司 | A kind of road solid-state laser apparatus of plane four |
| CN108711731A (en) * | 2018-08-28 | 2018-10-26 | 深圳市格镭激光科技有限公司 | A kind of both-end pumping polarized combination intracavity frequency doubling high frequency green laser |
| CN108963735A (en) * | 2018-07-27 | 2018-12-07 | 南京理工大学 | A kind of device and its control method of the output of optical fiber laser subchannel |
| CN116742455A (en) * | 2023-08-09 | 2023-09-12 | 上海瑞柯恩激光技术有限公司 | Four-way solid holmium laser system |
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| US6317170B1 (en) * | 1997-09-13 | 2001-11-13 | Samsung Electronics Co., Ltd. | Large screen compact image projection apparatus using a hybrid video laser color mixer |
| CN201478675U (en) * | 2009-01-22 | 2010-05-19 | 合肥大族科瑞达激光设备有限公司 | Three-path holmium laser |
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2011
- 2011-12-02 CN CN 201110396132 patent/CN102437503B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6317170B1 (en) * | 1997-09-13 | 2001-11-13 | Samsung Electronics Co., Ltd. | Large screen compact image projection apparatus using a hybrid video laser color mixer |
| CN201478675U (en) * | 2009-01-22 | 2010-05-19 | 合肥大族科瑞达激光设备有限公司 | Three-path holmium laser |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103280692A (en) * | 2013-06-03 | 2013-09-04 | 哈尔滨工业大学 | 2-micrometer solid laser device operating based on polarization beam combining manner |
| CN103280692B (en) * | 2013-06-03 | 2015-06-10 | 哈尔滨工业大学 | 2-micrometer solid laser device operating based on polarization beam combining manner |
| CN104659641A (en) * | 2015-02-13 | 2015-05-27 | 合肥大族科瑞达激光设备有限公司 | Four-way holmium laser with four-cavity space |
| CN104949753A (en) * | 2015-06-29 | 2015-09-30 | 中国原子能科学研究院 | Real-time monitoring system device for intense laser energy |
| CN107845943A (en) * | 2017-11-24 | 2018-03-27 | 合肥大族科瑞达激光设备有限公司 | A kind of road solid-state laser apparatus of plane four |
| CN108963735A (en) * | 2018-07-27 | 2018-12-07 | 南京理工大学 | A kind of device and its control method of the output of optical fiber laser subchannel |
| CN108711731A (en) * | 2018-08-28 | 2018-10-26 | 深圳市格镭激光科技有限公司 | A kind of both-end pumping polarized combination intracavity frequency doubling high frequency green laser |
| CN116742455A (en) * | 2023-08-09 | 2023-09-12 | 上海瑞柯恩激光技术有限公司 | Four-way solid holmium laser system |
| CN116742455B (en) * | 2023-08-09 | 2023-11-21 | 上海瑞柯恩激光技术有限公司 | Four-way solid holmium laser system |
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