CN101630808B - Laser resonant cavity structure - Google Patents
Laser resonant cavity structure Download PDFInfo
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- CN101630808B CN101630808B CN2009100618751A CN200910061875A CN101630808B CN 101630808 B CN101630808 B CN 101630808B CN 2009100618751 A CN2009100618751 A CN 2009100618751A CN 200910061875 A CN200910061875 A CN 200910061875A CN 101630808 B CN101630808 B CN 101630808B
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Abstract
The invention provides a laser resonant cavity structure, comprising a front end plate (1), a rear end plate (2), a central tube (3), an optical bridge rod (4), a joint bearing (5) and a central tube spring (8). The invention is characterized in that the resonant cavity further comprises hangings (9) which can be fixed on a casing and which are respectively arranged outside the front end plate (1) and the rear end plate (2); the two ends of the central tube respectively pass through the neutral positions of the front end plate (1) and the rear end plate (2) and are connected with the hanging through the central tube spring which can only move axially along the central tube; the two ends of the central tube are respectively connected with the front end plate (1) and the rear end plate (2), one end is fixedly connected and the other end is connected in a relative sliding manner along the axial direction of the central tube. In the resonant cavity structure of the invention, the central tube and the end plate assembly are separated away from each other skillfully, thus structurally ensuring that the stability of the resonant cavity is not influenced when deformation occurs to the central tube, and simultaneously ensuring the stability of the resonant cavity in the transportation process, which also provides a guarantee for obtaining ideal, stable and reliable output laser beam.
Description
Technical field
The present invention relates to laser, be specially a kind of laser resonant cavity structure.
Background technology
Resonant cavity is one of core cell of laser, mainly is made of parts such as central tube, end plate, light bridge bars.The effect of resonant cavity is to select frequency light certain, that direction is consistent to do prepreerence amplification, and the light of other frequencies and direction is suppressed.All not outside all very fast effusion of the photon chamber that resonator axis moves, no longer contact with working media.Photon along axial-movement will move in the chamber, and constantly come and go operation through the reflection of two speculums and produce vibration, during operation constantly be excited particle and meet and produce stimulated radiation, photon along the axis operation will constantly be bred, in the chamber, form direction of propagation unanimity, strong beam that frequency is identical with phase place, Here it is laser.Can therefore, export laser emission, the stability of laser emission how, and the stability of resonant cavity is exactly important decisive factor wherein.
Shown in Figure 1 is a kind of cavity resonator structure of typical traditional type.Central tube 3 is connected on the end plate by central tube spring 8, and a ball bearing 6 on the front end-plate 1 on two ball bearings 6 and the end plate 2 is separately fixed on three V-blocks 7, and is fixing with an oscillating bearing 5 after the resonant cavity leveling.There are following two shortcomings in this structure: one, when central tube 3 because during ambient temperature generation deformation, though central tube spring 8 has a stress can offset deformation, but this power is limited, when the understrressing of central tube spring 8 during with the power offsetting central tube 3 deformation and produce, end plate also can produce deformation, at this moment the resonant cavity instability.Two, V-block 7 can be fixing with ball bearing 6, and oscillating bearing 5 is fixed on end plate on the casing simultaneously, but this moment, can only guarantee the fixing of front, rear, left and right and bottom, when casing again in the transportation, can not guarantee the fixing of end plate top, influence the stability of resonant cavity thus.
Summary of the invention
The objective of the invention is provides a kind of axial fast flow gas laser cavity resonator structure in order to solve the deficiency that the above-mentioned background technology exists, and it is had when casing and central tube are subjected to ambient temperature generation deformation, does not influence the characteristics of resonant cavity stability.
For achieving the above object, the present invention adopts following technical scheme: a kind of cavity resonator structure of axial fast flow gas laser, comprise front end-plate 1, end plate 2, central tube 3, light bridge bar 4, oscillating bearing 5 and central tube spring 8, it is characterized in that: this resonant cavity also comprises being fixed on hangs 9 on the casing, hang 9 outsides that lay respectively at front end-plate 1 and end plate 2, the central tube two ends are passed the neutral place of front end-plate 1 and end plate 2 respectively and are connected with hanging by the central tube spring; Described central tube two connects front end-plate 1 respectively and 2, one of end plates are continuous with fixed form, and the other end is axially can the slide relative mode link to each other along central tube.
In such scheme, described front end-plate 1 can be suspended on the central tube 3 by an oscillating bearing 5 and the antitorque angle bar 10 of L type; Described oscillating bearing is installed on the front end-plate, and the oscillating bearing axle passes oscillating bearing and is fixed on the fixed block 15, and fixed block 15 is fixed on the central tube surface corresponding with oscillating bearing; One side of the antitorque angle bar 10 of described L type is fixed on the front end-plate 1, adopts the connected mode that can move, can not rotate along axis direction between another side and the central tube 3.
Furtherly, one side the antitorque angle bar 10 of described L type be connected with central tube 3 longitudinally be provided with bar hole, the fastening bolt that matches with the bar hole width passes on the outer wall that this bar hole is fixed on central tube 3.
In such scheme, link to each other with a U-shaped bearing bracket stand 13 by a linear bearing 7 between described end plate 2 and the central tube 3, linear bearing is installed on the end plate and the central tube parallel axes, the U-shaped bearing bracket stand is fixed on the central tube surface corresponding with linear bearing, the linear bearing axle passes linear bearing and U-shaped bearing bracket stand simultaneously, and is fixed on the U-shaped bearing bracket stand; At the central tube 3 mounted on surface needle bearings 6 and the needle bearing seat at place, linear bearing diagonal angle, needle bearing 6 contacts with end, end plate neutral place, between needle bearing seat and end, end plate neutral place the spring 11 that they are coupled together is housed between the two.
Furtherly, described linear bearing is installed on the end plate, is positioned at the position that central tube 3 the first half depart from vertical centre.
Furtherly, the two ends of described spring 11 are separately fixed at the bolt that is positioned on the needle bearing seat and are positioned on the bolt of end, end plate neutral place.
More particularly, be provided with bearing pin between described needle bearing 6 and the end, end plate neutral place, and contact by bearing pin.
More particularly, described smooth bridge bar uses thermal coefficient of expansion to reach 10
-7The material of/℃ magnitude.
Cavity resonator structure of the present invention obviously is different from traditional structure, it is separated from central tube 3 come with the front and back end plate dexterously, guaranteed that from structure central tube 3 does not influence the stable of resonant cavity when deformation takes place, and guaranteed the stable of resonant cavity in the transportation simultaneously, provide guarantee for obtaining desirable, reliable and stable output laser beam.
Cavity resonator structure of the present invention is applicable to gas and solid state laser.
Description of drawings
Fig. 1 is a kind of traditional type cavity resonator structure schematic diagram.
Fig. 2 is an embodiment cavity resonator structure stereogram of the present invention.
Fig. 3 is that the P of Fig. 2 is to stereogram.
Fig. 4 is that the N of Fig. 2 is to stereogram.
Fig. 5 is an i place partial enlarged drawing among Fig. 4.
Fig. 6 is an A-A cutaway view among Fig. 5.
In the drawings, 1 is front end-plate, and 2 is end plate, and 3 is central tube, 4 is light bridge bar, and 5 is oscillating bearing, and 6 is ball bearing, 7 is V-block, and 8 is the central tube spring, and 9 for hanging, 10 is the antitorque angle bar of L type, and 11 is spring, and 12 is bolt, 13 is the U-shaped bearing bracket stand, and 14 is bearing pin, and 15 is the needle bearing seat, 16 is needle bearing, and 17 is linear bearing, and 18 is fixed block.
Embodiment
The present invention is further detailed explanation below in conjunction with accompanying drawing and example example.
As shown in Figure 2, embodiment of the present invention comprises front end-plate 1, end plate 2, central tube 3, light bridge bar 4, oscillating bearing 5 and central tube spring 8.Described smooth bridge bar 4 is between front end-plate 1 and end plate 2, and is and coupled.Be respectively equipped with in the outside of front end-plate 1 and end plate 2 and hang 9, the installed surface of hanging 9 upper ends is fixed on the casing, central tube between front end-plate 1 and end plate 2, the central tube two ends pass respectively front end-plate 1 and end plate 2 the neutral place and by central tube spring 8 be fixed on hanging on the casing and 9 be connected.Described front end-plate 1 and end plate 2 pass through several mobilizable bearing suspensions respectively on central tube.
When central tube 3 because of the influence that is subjected to factors such as ambient temperature deformation took place, the central tube spring 8 that is attached thereto will be along its axis generation deformation, and the deformation of central tube 3 can only be along its axial-movement.Because on central tube 3, therefore, it can not be subjected to the influence of central tube 3 deformation to forward and backward end plate by several mobilizable bearing suspensions.
Described oscillating bearing 5 is installed on the front end-plate 1, and fixed block 18 is fixed on central tube 3 surfaces and oscillating bearing 5 corresponding positions, and the oscillating bearing axle passes oscillating bearing 5 and is fixed on the fixed block 18, to connect front end-plate 1 and central tube 3.For the space parallel of location front end-plate 1 and end plate 2, an antitorque angle bar 10 of L type has been installed also on front end-plate 1.This angle bar had both prevented that front end-plate 1 from along the central tube rotational, also having certain allowing property, can make front end-plate along the central tube axis direction certain mobile surplus be arranged.For this reason, one side being fixed on the front end-plate 1 of the antitorque angle bar 10 of L type, another side longitudinally is provided with bar hole, and the fastening bolt that matches with the bar hole width passes on the outer wall that this bar hole is fixed on central tube 3.
Described linear bearing 17 is installed on the end plate 2, is positioned at the position that central tube the first half departs from vertical centre, with the central tube parallel axes; U-shaped bearing bracket stand 13 is fixed on the central tube corresponding with linear bearing 3 surfaces, and the linear bearing axle passes linear bearing 17 and U-shaped bearing bracket stand 13 simultaneously, and is fixed on the U-shaped bearing bracket stand, and end plate 2 is connected on the central tube 3.Simultaneously, the gravity of end plate 2 will drop on the needle bearing 16 at place, linear bearing 17 diagonal angle.Needle bearing 16 and needle bearing seat 15 are installed in the central tube surface at place, linear bearing 17 diagonal angle, are provided with bearing pin between needle bearing 16 and the end, end plate neutral place, and by bearing pin 14 contacts.For the spring 11 that prevents from that it from upspringing because of vibrations, be equipped with between needle bearing seat 15 and end, end plate neutral place they are coupled together is between the two held them.The two ends of described spring 11 are separately fixed at the bolt 12 that is positioned on the needle bearing seat 15 and are positioned on the bolt 12 of end, end plate 2 neutral place.When deformation take place in central tube 3, be positioned at end plate 2 and tiltedly go up angle linear bearings 17 and linear bearing axle moving linearlies, sliding on needle bearing 16 in the end, end plate neutral place at place, diagonal angle, has eliminated because of the deformation of central tube 3 influence to light bridge bar 4.
Cavity resonator structure of the present invention breaks away from central tube and end board assembly dexterously and comes, forward and backward end plate is suspended on the central tube, when having guaranteed central tube generation deformation, structure do not influence the stable of resonant cavity, for the transportation of laser, can avoid the skew of each relative casing in orientation of resonant cavity up, down, left, right, before and after, also the guarantee that provides for the stability of laser output.
Claims (6)
1. laser resonant cavity structure, comprise front end-plate (1), end plate (2), central tube (3), light bridge bar (4), oscillating bearing (5) and central tube spring (8), it is characterized in that: this resonant cavity also comprises can be fixed on hanging on the casing (9), hang (9) and lay respectively at the outside of front end-plate (1) and end plate (2), the central tube two ends are passed the neutral place of front end-plate (1) and end plate (2) respectively and by being connected with hanging along the central tube spring of central tube axial motion; Described central tube two connects front end-plate (1) and end plate (2) respectively, and one continuous with fixed form, and the other end is axially can the slide relative mode link to each other along central tube; Described front end-plate (1) is suspended on the central tube (3) by an oscillating bearing (5) and an antitorque angle bar of L type (10); Described oscillating bearing is installed on the front end-plate, and the oscillating bearing axle passes oscillating bearing and is fixed on the fixed block (15), and fixed block (15) is fixed on the central tube surface corresponding with oscillating bearing; One side of the antitorque angle bar of described L type (10) is fixed on the front end-plate (1), adopts the connected mode that can move, can not rotate along axis direction between another side and the central tube (3); Link to each other with a U-shaped bearing bracket stand (13) by a linear bearing (7) between described end plate (2) and the central tube (3), linear bearing is installed on the end plate and the central tube parallel axes, the U-shaped bearing bracket stand is fixed on the central tube surface corresponding with linear bearing, the linear bearing axle passes linear bearing and U-shaped bearing bracket stand simultaneously, and is fixed on the U-shaped bearing bracket stand; Central tube (3) mounted on surface needle bearing (6) and needle bearing seat at place, linear bearing diagonal angle, needle bearing (6) contacts with end, end plate neutral place, and the spring (11) that they are coupled together between the two is housed between needle bearing seat and end, end plate neutral place.
2. a kind of laser resonant cavity structure according to claim 1, it is characterized in that: the antitorque angle bar of described L type (10) with central tube (3) one side be connected longitudinally be provided with bar hole, the fastening bolt that matches with the bar hole width passes on the outer wall that this bar hole is fixed on central tube (3).
3. a kind of laser resonant cavity structure according to claim 1, it is characterized in that: described linear bearing is installed on the end plate, is positioned at the position that central tube (3) the first half departs from vertical centre.
4. a kind of laser resonant cavity structure according to claim 1 is characterized in that: the described two ends that are arranged on the spring (11) between needle bearing seat and the end, end plate neutral place are separately fixed at the bolt that is positioned on the needle bearing seat and are positioned on the bolt of end, end plate neutral place.
5. a kind of laser resonant cavity structure according to claim 1 is characterized in that: be provided with bearing pin between described needle bearing (6) and the end, end plate neutral place, and contact by bearing pin.
6. a kind of laser resonant cavity structure according to claim 1 is characterized in that: described smooth bridge bar uses thermal coefficient of expansion to reach 10
-7The material of/℃ magnitude.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100618751A CN101630808B (en) | 2009-04-28 | 2009-04-28 | Laser resonant cavity structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100618751A CN101630808B (en) | 2009-04-28 | 2009-04-28 | Laser resonant cavity structure |
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| Publication Number | Publication Date |
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| CN101630808A CN101630808A (en) | 2010-01-20 |
| CN101630808B true CN101630808B (en) | 2011-01-26 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105119132B (en) * | 2015-09-23 | 2018-03-02 | 江苏卓远激光科技有限公司 | A kind of floating type radio frequency electrical feedthrough of laser |
| JP7023573B2 (en) * | 2018-02-02 | 2022-02-22 | 住友重機械工業株式会社 | Laser oscillator |
| CN109599739A (en) * | 2018-12-26 | 2019-04-09 | 沧州沃福激光科技有限公司 | A kind of laser resonant cavity system |
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Denomination of invention: Laser resonant cavity structure Effective date of registration: 20120821 Granted publication date: 20110126 Pledgee: Industrial Commercial Bank of China Ltd Wuhan Wuchang branch Pledgor: Wuhan Ovlaser Technology Co., Ltd. Registration number: 2012990000458 |