CN2519499Y - Hole boring coupling laser mirrow frame - Google Patents
Hole boring coupling laser mirrow frame Download PDFInfo
- Publication number
- CN2519499Y CN2519499Y CN 01273469 CN01273469U CN2519499Y CN 2519499 Y CN2519499 Y CN 2519499Y CN 01273469 CN01273469 CN 01273469 CN 01273469 U CN01273469 U CN 01273469U CN 2519499 Y CN2519499 Y CN 2519499Y
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- CN
- China
- Prior art keywords
- mirror
- laser
- housing pin
- mirror holder
- holder
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- Expired - Fee Related
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Abstract
A taper hole coupling laser mirror frame pertaining to laser and optical element classification of the system is mainly used for the mirror frame of laser-cavity mirror and reflector of light guiding system. The laser mirror is positioned in the mirror frame and is fixed by a housing pin, the head of the housing pin is a steeple head and takes a shape of small taper circular table, the side of the laser mirror is provided with three fixed holes, the orifice rubs an endless belt of same taper with the steeple head of the housing pin, the housing pin fixes the laser mirror in the corresponding positions of the fixed holes of the laser mirror on the mirror frame respectively. The use of the mirror frame can overcome the deflection of the mirror caused by thermal deformation and obviously improve the operation stability of the laser.
Description
Technical field
The utility model belongs to the optical element class in laser and the system thereof, is mainly used in the mirror holder of the speculum in laser mirror and the light-conducting system.
Background technology
Existing all kinds of mirror holder is broadly divided into two classes by its mirror method of clamping: end face compresses and lateral surface compressing.Do not have the mirror holder normally rigidity clamping again in airtight requirement and the non-high light optical system, at this moment be actually 3 method of clamping as face fastening means (no matter being that end face compresses or lateral surface compressing).Be to clamp mirror, can be by screwing pressure cap or three side screws apply certain pressure to mirror.The pressure cap of mirror and mirror holder or the size of the stiction between the screw are in proportion with institute's applied pressure, if chucking power is controlled in the suitable scope, can both clamp mirror, and surface deformation is again little of ignoring.
In the high light optical system, the mirror in the high power laser system for example, situation is just different.Laser mirror is wanted Stimulated Light width of cloth photograph, and it absorbs laser energy and produces temperature rise.Because it is uneven that laser beam intensity spatially distributes, be uniformly even laser beam intensity spatially distributes, also can be because of the mirror both ends of the surface are respectively sensitive surface and shady face, mirror temperature rise everywhere is different.This will produce thermal stress in mirror inside, and make mirror produce thermal deformation, as mirror deflection, the outside expansion of mirror periphery etc.Original clamping balance also can be broken.As mirror and mirror holder are regarded as a system, under external interference, new dynamic balance is to fall into minimum direction towards the elastic potential energy that makes system to change, and 3 positions that contact between the pressure cap of mirror and mirror holder or three housing pins may change, and mirror has just produced deflection.
The chamber mirror that is used for high power gas laser also has airtight requirement, and at this moment be everlasting end face or side add a rubber seal.This sealing ring can be alleviated because of compressing pressure cap or side three screws to the compression that mirror causes, and reduces the mirror distortion.Yet rubber seal can not change because of mirror and is subjected to thermogenetic thermal deformation.No matter be the fastening or side fastening of end face, mirror reaches everywhere in the rubber seal everywhere that force-bearing situation can not be uniform.Thermal stress causes the deflection of mirror and differential expansion still can break equilibrium of forces between mirror, the mirror holder, and mirror produces deflection.In the optical interference method research of laser mirror because of the thermal deformation under the laser irradiation, variation and interference fringe direction that we can observe number of interference fringes change.
As the chamber mirror of laserresonator, its thermal deformation and deflection all can make laser oscillation mode change, thereby have influence on the stable operation of laser.Checking is being put into practice and obtained in theory to this physical phenomenon.
Summary of the invention
The utility model provides a kind of laser mirror mirror holder of taper hole coupling, and its purpose is to solve the chamber mirror because of being subjected to the problem of thermal deflection.
The taper hole coupled laser mirror mirror holder that the utility model proposes, laser mirror is positioned at mirror holder, fix by housing pin, the housing pin head is nose cone, be conelet degree truncated cone-shaped, the laser mirror side is made a call to three fixing holes, apertures and is ground out and the identical endless belt of housing pin nose cone tapering, and housing pin is corresponding laser mirror fixing hole position fixed laser mirror from the mirror holder respectively.
Described taper hole coupled laser mirror mirror holder, 120 ° of circular laser mirror sides that matches with mirror holder are uniform makes a call to three fixing holes, housing pin 120 ° of uniform fixed laser mirrors from the mirror holder.
Described taper hole coupled laser mirror mirror holder is made a call to a fixing hole with the square laser mirror end face that mirror holder matches, and two fixing holes are made a call in the bottom surface, housing pin on mirror holder respectively from end face and bottom surface fixed laser mirror.
Taper hole coupled laser mirror mirror holder of the present utility model why can solve mirror because of the principle that is subjected to the thermal deflection problem as shown in Figure 5.The nose cone of housing pin can be decomposed into radially power F//with along the power F ⊥ of mirror tangential direction to the pressure F of mirror.For the design of little tapering, 1: 10 tapering for example is added on radial pressure F/ on the mirror/only be by screw
, and tangential pressure F ⊥ is applied on this endless belt of aperture, it accounts at this moment will to be distributed on the endless belt on some points (ideal situation is whole endless belt)
Compare with the mirror holder of common lateral surface compressing, the common mirror holder pressure F that imposes on mirror that tightens up a screw all is added on that contacts with mirror, and all is towards the application of force radially.So it can not remove to compress mirror with too big power, otherwise mirror is with serious deflection deformation.Therefore the stiction between mirror and the housing pin is little, in case mirror produces thermal deformation, just may produce deflection.And on the taper hole coupling mirror holder, most of power is applied on the mirror tangential direction, and is distributed on the endless belt on some points, therefore can strengthen external force, improves stiction.Mirror produces deflection with regard to being difficult for because of thermal deformation.On the other hand, the taper hole coupled modes are precise and stable to the mirror location more than 3 method of clamping.
In the interferometric method experimental study of mirror thermal deformation, made contrast test to using under two kinds of situations of common mirror holder and taper hole coupling mirror holder.Absorb identical laser power (140W) with identical silicon mirror, observe the variation of number of interference fringes and interference fringe direction.After 10 seconds, with the mirror of common mirror holder clamping, its interference fringe has increased by 4, and the interference fringe direction has also been changeed about 30 degree.And with the mirror of taper hole coupling mirror holder clamping, not only the interference fringe direction is constant, and number of interference fringes does not increase yet.
Accompanying drawing 1: existing end face compresses mirror holder, and wherein 1 is that mirror holder, 2 is that housing pin (cap), 3 is laser mirror.
Accompanying drawing 2: existing lateral surface compressing mirror holder, wherein 1 is that mirror holder, 2 is that housing pin, 3 is laser mirror.
Accompanying drawing 3: the circular mirror taper hole coupling of the utility model mirror holder
Accompanying drawing 4: the square mirror taper hole coupling of the utility model mirror holder
Accompanying drawing 5: taper hole coupled laser mirror holder schematic diagram
Embodiment
Figure 3 shows that circular laser mirror 3,120 ° of uniform three fixing holes in its side, fixing by housing pin 2 from mirror holder 1.
Figure 4 shows that square laser mirror 3, there are three fixing holes its end face and bottom surface, and be fixing from mirror holder by housing pin 2.
Claims (3)
1. taper hole coupled laser mirror mirror holder, laser mirror is positioned at mirror holder, fix by housing pin, it is characterized in that the housing pin head is nose cone, is conelet degree truncated cone-shaped, the laser mirror side is made a call to three fixing holes, apertures and is ground out and the identical endless belt of housing pin nose cone tapering, and housing pin is corresponding laser mirror fixing hole position fixed laser mirror from the mirror holder respectively.
2. require 1 described taper hole coupled laser mirror mirror holder as right 1, it is characterized in that 120 ° of the circular laser mirror sides that match with mirror holder are uniform to make a call to three fixing holes, housing pin 120 ° of uniform fixed laser mirrors from the mirror holder.
3. taper hole coupled laser mirror mirror holder as claimed in claim 1 is characterized in that the square laser mirror end face that matches with mirror holder makes a call to a fixing hole, and two fixing holes are made a call in the bottom surface, housing pin on mirror holder respectively from end face and bottom surface fixed laser mirror.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01273469 CN2519499Y (en) | 2001-12-20 | 2001-12-20 | Hole boring coupling laser mirrow frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01273469 CN2519499Y (en) | 2001-12-20 | 2001-12-20 | Hole boring coupling laser mirrow frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2519499Y true CN2519499Y (en) | 2002-10-30 |
Family
ID=33678407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01273469 Expired - Fee Related CN2519499Y (en) | 2001-12-20 | 2001-12-20 | Hole boring coupling laser mirrow frame |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2519499Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100540203C (en) * | 2006-06-07 | 2009-09-16 | 三菱电机株式会社 | Laser oscillation apparatus |
| CN102263361A (en) * | 2011-06-22 | 2011-11-30 | 华中科技大学 | Laser reflection cavity mirror assembly |
-
2001
- 2001-12-20 CN CN 01273469 patent/CN2519499Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100540203C (en) * | 2006-06-07 | 2009-09-16 | 三菱电机株式会社 | Laser oscillation apparatus |
| CN102263361A (en) * | 2011-06-22 | 2011-11-30 | 华中科技大学 | Laser reflection cavity mirror assembly |
| CN102263361B (en) * | 2011-06-22 | 2012-08-15 | 华中科技大学 | Laser reflection cavity mirror assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |