CN102810812A - Fiber-coupled output Q-switched solid-state laser and manufacturing process - Google Patents
Fiber-coupled output Q-switched solid-state laser and manufacturing process Download PDFInfo
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- CN102810812A CN102810812A CN2012102592993A CN201210259299A CN102810812A CN 102810812 A CN102810812 A CN 102810812A CN 2012102592993 A CN2012102592993 A CN 2012102592993A CN 201210259299 A CN201210259299 A CN 201210259299A CN 102810812 A CN102810812 A CN 102810812A
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Abstract
The invention discloses a fiber-coupled output Q-switched solid-state laser and a manufacturing process. The laser comprises a laser medium fixed in a shell and an output fiber. A 1,064nm total reflection film and an 808nm total transmission film are plated on one end face of the laser medium. A 1,064nm partial transmission film and an 808nm total reflection film are plated on the end face of the output fiber in the shell. The end face of the laser medium with the 1,064nm total reflection film and the end face of the output fiber with the 1,064nm partial transmission film form a resonant cavity in the shell. A Q-switched crystal is arranged between the laser medium and the output fiber in the resonant cavity. The laser is favorable to improve beam quality and simplify the fiber output coupling structure of a diode-pumped solid-state laser (DPL). The end face of the fiber has a small diameter, so that the oscillation of a high-order mode in the resonant cavity can be suppressed, and the shortcomings of the conventional coupling mode can be overcome. An output window is miniature, so that the engineered, modular and standard design of the DPL is facilitated.
Description
Technical field
The present invention relates to a kind of laser diode pump solid state laser device, particularly a kind of optical fiber be coupled output Q-switched solid state laser and manufacturing process.
Background technology
Laser diode pump solid state laser device (DPL) is normally directly exported with window form; The DPL of this way of output is in use because light beam is directly output, limited flexibility that laser uses and and other use being of coupled connections between the instrument and equipment of DPL.
Traditional DPL optical fiber coupling output intent is that outgoing mirror (or the laser housing) outside at DPL increases a coupling device; Light beam coupling that will be through window output is in optical fiber; Be of coupled connections between the optical instrument (or equipment) through optical fiber and other use DPL, this method is regulated the coupling difficulty again, and the coupling efficiency reduction appears in long-time use easily; Need to regulate again coupling, meanwhile increased DPL volume, weight and outward appearance incoordination.
Summary of the invention
The purpose of this invention is to provide that a kind of volume is little, reliability and the high optical fiber of coupling efficiency are coupled output Q-switched solid state laser and manufacturing process.
The objective of the invention is to realize like this; A kind of optical fiber output Q-switched solid state laser that is coupled; It is characterized in that: comprise the laser medium and the output optical fibre that are fixed in the housing; Be coated with 1064nm be all-trans film and 808nm full-trans-parent film at an end face of laser medium; Output optical fibre end face plating 1064nm part transmission film in the housing and the 808nm film that is all-trans, laser medium are coated be all-trans end face and the output optical fibre of film of 1064nm and plate 1064nm part transmission film end face and in housing, form resonant cavity, between resonant cavity inner laser medium and the output optical fibre adjusting Q crystal are arranged.
The end face of described laser medium has the end face laser diode, and the end face laser diode is to act on the laser medium through the chamber inner face, and laser medium receives pumping outside the end face laser diode chamber, in the chamber, forms 1064nm vibration output.
There is the side laser diode described laser medium one side, and laser medium receives pumping outside the laser diode chamber, side, in the chamber, forms 1064nm vibration output.
There is the side laser diode described laser medium one side, and end face has the end face laser diode, and laser medium receives side laser diode and the pumping outside the chamber of end face laser diode, in the chamber, forms 1064nm vibration output.
Between end face laser diode and laser medium, optical coupling lens is arranged.
The described housing fixedly channel diameter and the output optical fibre external diameter of output optical fibre is tightly fixed, and makes optical axis coincidence in output optical fibre end face and the chamber; Described passage length is more than 3 times of output optical fibre diameter.
Described output optical fibre is fixed on one and is with in the externally threaded hollow pipe, and the hollow pipe is coaxial with output optical fibre, and the hollow pipe is threaded with passage through external screw thread, regulates output optical fibre inner face and laser medium end face chamber distance through the hollow gas thread.
There is securing member described hollow pipe outer face, and securing member is used to locate the hollow pipe on the one hand, is used on the other hand proofreading and correct the optical axis coincidence degree in hollow pipe and the chamber through colimated light system.
The be coupled manufacturing process of output Q-switched solid state laser of a kind of optical fiber is characterized in that: 1) obtain metal bar;
2) by housing requirement processing external diameter;
3) coaxial processing end face laser diode cavity;
4) coaxial processing coupled lens cavity makes coupled lens cavity external diameter greater than laser diode cavity external diameter;
5) coaxial processing laser medium cavity makes laser medium cavity external diameter greater than coupled lens cavity external diameter;
6) coaxial processing adjusting Q crystal cavity makes adjusting Q crystal cavity external diameter greater than laser medium cavity external diameter;
7) processing laser diode lead channels hole;
8) the interior or external screw thread of processing;
9) with another section of same bar, the external diameter of coaxial processing output optical fibre end cap;
10) coaxial processing output optical fibre passage;
11) the outer or internal thread of coaxial processing makes fore shell cooperate with end cap;
12) successively with in laser diode, coupled lens, laser medium, the supporting left shell of packing into of adjusting Q crystal;
13) the output optical fibre assembly is packed in the right shell body;
14) laser diode and adjusting Q crystal lead-in wire are drawn from lead channels;
15) left shell is connected with right shell body.
Advantage of the present invention is: owing to be to be coated with 1064nm be all-trans film and 808nm full-trans-parent film through the end face at laser medium; Output optical fibre end face plating 1064nm part transmission film in the housing and the 808nm film that is all-trans; Laser medium is coated be all-trans end face and the output optical fibre plating 1064nm part transmission film end face of film of 1064nm and in housing, forms resonant cavity; The outer pumping of laser medium Stimulated Light diode cavity forms in the chamber 1064nm vibration output.Utilize the output window of the end face of ordinary optic fibre as DPL like this, form an oscillating element of DPL resonant cavity, the output beam that makes DPL helps improving beam quality, simplifies DPL optical fiber output coupled structure directly through optical fiber output.Because the fiber end face diameter is less, can suppress the vibration of high-rder mode in the resonant cavity again, overcome the shortcoming of traditional coupled modes.Secondly, because the output window miniaturization helps DPL through engineering approaches, modularization and standardized designs.
Description of drawings
Below in conjunction with the embodiment accompanying drawing the present invention is described further:
Fig. 1 is the embodiment of the invention 1 structural representation;
Fig. 2 is a hollow tubular construction sketch map;
Fig. 3 is a collimation fastener constructions sketch map;
Fig. 4 is the embodiment of the invention 2 structural representations;
Fig. 5 is the embodiment of the invention 3 structural representations;
Fig. 6 is the embodiment of the invention 4 structural representations.
Fig. 7 is the collimation fastener constructions sketch map with standard SMA905 optical fiber connector interface.
Among the figure, 1, housing; 2, laser medium; 3, optical axis in the chamber; 4, passage; 5, collimation securing member; 6, output optical fibre; 7, output window; 8, resonant cavity; 9, coupled lens; 10, end face laser diode; 11, lead channels; 12, adjusting Q crystal; 13, hollow pipe; 14, side laser diode; 15, SMA905 optical fiber connector seat; 16, SMA905 optical fiber connector interface.
Embodiment
A kind of optical fiber output Q-switched solid state laser that is coupled; Comprise the laser medium 2 and output optical fibre 6 that are fixed in the housing 1; Be coated with 1064nm be all-trans film and 808nm full-trans-parent film at an end face of laser medium 2; Output optical fibre 6 end faces plating 1064nm part transmission film in the housing 1 and the 808nm film that is all-trans; Laser medium 2 is coated be all-trans end face and the output optical fibre 6 plating 1064nm part transmission film end faces of film of 1064nm and in housing 1, forms resonant cavity, between resonant cavity inner laser medium 2 and the output optical fibre 6 adjusting Q crystal 12 is arranged.
As shown in Figure 1; A kind of optical fiber coupling output intent of laser diode pump solid state laser device; Comprise the laser medium 2 and output optical fibre 6 that are fixed in the housing 1; Be coated with 1064nm be all-trans film and 808nm full-trans-parent film in the left side of laser medium 2, the right side is coated with 1064nm anti-reflection film and the 808nm film that is all-trans; Output optical fibre 6 end faces plating 1064nm part transmission film in the housing 1 and the 808nm film that is all-trans; Laser medium 2 is coated with the be all-trans end face of film and the end face that output optical fibre 6 is coated with 1064nm part transmission film of 1064nm and in housing 1, forms resonant cavity 8; End face laser diode 10 and coupled lens 9 from left to right are fixed on the left end of laser medium 2 successively; End face laser diode 10 acts on the laser medium 2 through coupled lens 9; Laser medium 2 receives pumping outside the end face laser diode chamber, in the chamber, forms 1064nm vibration output.
Described passage 4 length are more than 3 times of output optical fibre 6 diameters, to guarantee the stable and reliable of output optical fibre 6.
Certainly; Output optical fibre 6 also can be fixed on one and be with in the externally threaded hollow pipe 13, and hollow pipe 13 is coaxial with output optical fibre 6, and is as shown in Figure 2; Hollow pipe 13 is threaded with passage through external screw thread, through hollow pipe 13 threaded adjusting output optical fibres, 6 inner faces and laser medium end face chamber distance.
In order to make technology reasonable, there is collimation securing member 5 hollow pipe 13 outer faces, and are as shown in Figure 3, and collimation securing member 5 is used to locate hollow pipe 13 on the one hand, is used for proofreading and correct through colimated light system the optical axis coincidence degree of each element in the chamber on the other hand.Secondly, collimation securing member 5 connects standard SMA905 optical fiber connector seat 15, and is as shown in Figure 7, and when needing, through the output optical fibre of SMA905 optical fiber connector interface 16 connection random lengths, not the time spent, integral body can encapsulate, and brings convenience to transporting, safeguarding.
As shown in Figure 4, embodiment 3 and embodiment 2 differences are: between laser medium 2 and output optical fibre 6 inner faces, increased adjusting Q crystal 12, formed laser diode-pumped Q-switch solid laser.
As shown in Figure 5, embodiment 4 and embodiment 3 differences are: not only between laser medium 2 and output optical fibre 6 inner faces, increased adjusting Q crystal 12, formed laser diode-pumped Q-switch solid laser.Simultaneously, increased pumping side laser diode 14 in laser medium 2 sides, pumping side laser diode 14 and pumping end surface laser diode 10 co-pumped laser mediums 2 improve power output.
As shown in Figure 6; Embodiment 5 is with embodiment 2 differences: increased pumping side laser diode 14 in laser medium 2 one sides; Pumping side laser diode 14 and pumping end surface laser diode 10 co-pumped laser mediums 2; Improve power output, do not have adjusting Q crystal 12, exportable continuous power.
The be coupled manufacturing process of output Q-switched solid state laser of a kind of optical fiber is characterized in that: 1) obtain metal bar;
2) by housing 1 requirement processing external diameter;
3) coaxial processing end face laser diode cavity;
4) coaxial processing coupled lens cavity makes coupled lens cavity external diameter greater than laser diode cavity external diameter;
5) coaxial processing laser medium 2 cavitys make laser medium 2 cavity external diameters greater than coupled lens cavity external diameter;
6) coaxial processing adjusting Q crystal 12 cavitys make adjusting Q crystal 12 cavity external diameters greater than laser medium 2 cavity external diameters;
7) processing laser diode lead channels hole;
8) the interior or external screw thread of processing;
9) with another section of same bar, the external diameter of coaxial processing output optical fibre end cap;
10) coaxial processing output optical fibre passage;
11) the outer or internal thread of coaxial processing makes fore shell cooperate with end cap;
12) successively with in laser diode, coupled lens, laser medium, the supporting left shell of packing into of adjusting Q crystal;
13) the output optical fibre assembly is packed in the right shell body;
14) laser diode and adjusting Q crystal lead-in wire are drawn from lead channels;
15) left shell is connected with right shell body.
Cooperate through external member between laser diode and the laser diode cavity.
Cooperate through external member between coupled lens and the coupled lens cavity.
Cooperate through external member between laser medium and the laser medium cavity.
Cooperate through external member between adjusting Q crystal and the adjusting Q crystal cavity.
Parts that present embodiment is not described in detail and structure belong to well-known components and the common structure or the conventional means of the industry, here not narration one by one.
Claims (9)
1. an optical fiber output Q-switched solid state laser that is coupled; It is characterized in that: comprise the laser medium (2) and the output optical fibre (6) that are fixed in the housing (1); Be coated with 1064nm be all-trans film and 808nm full-trans-parent film at an end face of laser medium (2); Output optical fibre (6) end face plating 1064nm part transmission film in the housing (1) and the 808nm film that is all-trans; Laser medium (2) is coated be all-trans end face and output optical fibre (6) the plating 1064nm part transmission film end face of film of 1064nm and in housing (1), forms resonant cavity, between resonant cavity inner laser medium (2) and the output optical fibre (6) adjusting Q crystal (12) is arranged.
2. a kind of optical fiber according to claim 1 output Q-switched solid state laser that is coupled; It is characterized in that: the end face of described laser medium (2) has end face laser diode (10); End face laser diode (10) is to act on the laser medium (2) through the chamber inner face; Laser medium (2) receives pumping outside end face laser diode (10) chamber, in the chamber, forms 1064nm vibration output.
3. a kind of optical fiber according to claim 1 output Q-switched solid state laser that is coupled; It is characterized in that: there is side laser diode (14) described laser medium (2) one sides; Laser medium (2) receives pumping outside side laser diode (14) chamber, in the chamber, forms 1064nm vibration output.
4. a kind of optical fiber according to claim 1 output Q-switched solid state laser that is coupled; It is characterized in that: there is side laser diode (14) described laser medium (2) one sides; End face has end face laser diode (10); Laser medium receives side laser diode (14) and end face laser diode (10) pumping outside the chamber, in the chamber, forms 1064nm vibration output.
5. a kind of optical fiber according to claim 2 output Q-switched solid state laser that is coupled is characterized in that: between end face laser diode (10) and laser medium (2), optical coupling lens (9) is arranged.
6. a kind of optical fiber according to claim 1 output Q-switched solid state laser that is coupled; It is characterized in that: described housing (1) fixedly passage (4) diameter and output optical fibre (6) external diameter of output optical fibre (6) is tightly fixed, and makes that optical axis (3) overlaps in output optical fibre (6) end face and the chamber; Described passage (4) length is more than 3 times of output optical fibre (6) diameter.
7. a kind of optical fiber according to claim 1 output Q-switched solid state laser that is coupled; It is characterized in that: described output optical fibre (6) is fixed on one and is with in the externally threaded hollow pipe (13); Hollow pipe (13) is coaxial with output optical fibre (6); Hollow pipe (13) is threaded with passage through external screw thread, through hollow pipe (13) threaded adjusting output optical fibre (6) inner face and laser medium (2) end face chamber distance.
8. a kind of optical fiber according to claim 7 output Q-switched solid state laser that is coupled; It is characterized in that: there is securing member described hollow pipe (13) outer face; Securing member is used to locate hollow pipe (13) on the one hand, is used on the other hand proofreading and correct the optical axis coincidence degree in hollow pipe (13) and the chamber through colimated light system.
9. the optical fiber manufacturing process of output Q-switched solid state laser that is coupled is characterized in that: 1) obtain metal bar;
2) by housing requirement processing external diameter;
3) coaxial processing end face laser diode cavity;
4) coaxial processing coupled lens cavity makes coupled lens cavity external diameter greater than laser diode cavity external diameter;
5) coaxial processing laser medium cavity makes laser medium cavity external diameter greater than coupled lens cavity external diameter;
6) coaxial processing adjusting Q crystal cavity makes adjusting Q crystal cavity external diameter greater than laser medium cavity external diameter;
7) processing laser diode lead channels hole;
8) the interior or external screw thread of processing;
9) with another section of same bar, the external diameter of coaxial processing output optical fibre end cap;
10) coaxial processing output optical fibre passage;
11) the outer or internal thread of coaxial processing makes fore shell cooperate with end cap;
12) successively with in laser diode, coupled lens, laser medium, the supporting left shell of packing into of adjusting Q crystal;
13) the output optical fibre assembly is packed in the right shell body;
14) laser diode and adjusting Q crystal lead-in wire are drawn from lead channels;
15) left shell is connected with right shell body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210259299.3A CN102810812B (en) | 2012-07-25 | 2012-07-25 | Fiber-coupled output Q-switched solid-state laser and manufacturing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210259299.3A CN102810812B (en) | 2012-07-25 | 2012-07-25 | Fiber-coupled output Q-switched solid-state laser and manufacturing process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102810812A true CN102810812A (en) | 2012-12-05 |
| CN102810812B CN102810812B (en) | 2014-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210259299.3A Expired - Fee Related CN102810812B (en) | 2012-07-25 | 2012-07-25 | Fiber-coupled output Q-switched solid-state laser and manufacturing process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108075346A (en) * | 2018-01-11 | 2018-05-25 | 苏州紫光伟业激光科技有限公司 | A kind of microlaser of ultrashort pulse high-peak power |
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| CN108075346A (en) * | 2018-01-11 | 2018-05-25 | 苏州紫光伟业激光科技有限公司 | A kind of microlaser of ultrashort pulse high-peak power |
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| Publication number | Publication date |
|---|---|
| CN102810812B (en) | 2014-10-15 |
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