CN102709795B - Helium-neon gas laser with built-in cavity - Google Patents
Helium-neon gas laser with built-in cavity Download PDFInfo
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- CN102709795B CN102709795B CN 201210194751 CN201210194751A CN102709795B CN 102709795 B CN102709795 B CN 102709795B CN 201210194751 CN201210194751 CN 201210194751 CN 201210194751 A CN201210194751 A CN 201210194751A CN 102709795 B CN102709795 B CN 102709795B
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- spill
- cut down
- connector
- mirror
- concave
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Abstract
The invention relates to a helium-neon gas laser with a built-in cavity, which is characterized by comprising a glass tube shell and two concave connecting pieces which are produced by adopting kovar metal materials, wherein each concave kovar connecting piece comprises a support structure and a positioning structure, and the end part of each positioning structure is provided with a concave connecting block; a cathode tube is arranged in the glass tube shell, the outer wall of the cathode tube is fit with the inner wall of the glass tube shell, the cathode tube penetrates through the glass tube shell through a tungsten rod to be connected with a high voltage power supply cathode, the two ends of the glass tube shell are respectively sintered with the concave connecting blocks into a whole through connecting tubes, a capillary tube is also arranged in the glass tube shell, and the two ends of the capillary tube are respectively inserted in the two positioning structures; one concave kovar connecting piece is sequentially provided with a complete reflecting mirror, a spring and a window sheet from the inside to the outside, and is connected with the anode of a high voltage power supply; and the other concave kovar connecting piece is sequentially provided with an output mirror, the spring and the window sheet from the inside to the outside, each window sheet is fixed with the end part of each concave kovar connecting piece, then the complete reflecting mirror and the output mirror are enabled to be tightly fit with the two end faces of the capillary tube through pressing the two springs respectively. The helium-neon gas laser with the built-in cavity can be widely applied in the helium-neon gas laser production.
Description
Technical field
The present invention relates to a kind of laser, particularly about a kind of built-in chamber helium neon laser.
Background technology
Chamber mirror in tradition helium neon laser cavity resonator structure is (can cut down material suitable with the glass shell material coefficient of expansion) by cutting down material and glass shell high temperature sintering together, high temperature sintering different materials inside together generally can produce internal stress, when temperature changes, these internal stresss can be by amplification in various degree, there is following problem in this kind cavity resonator structure: 1, helium neon laser in the course of the work, the heat that different parts produces is difference to some extent, be embodied in: cathode tube heat, the anode place is cold; Heat above glass shell, below cold, this temperature gradient makes the different parts generation expansion in various degree of laser, cause two chamber mirrors in resonant cavity not parallel, and the coefficient of expansion difference of different materials causes resonant cavity distortion and distortion, further aggravated temperature gradient to two not parallel impacts that cause of chamber mirror.2, generally, helium neon laser go out luminous power big ups and downs within a large range when just starting working, when laser shell each position reached heat balance gradually along with the time, the luminous power that goes out of laser just can be more stable, and fluctuation also just can be more regular.The internal stress that high temperature sintering produces makes the more difficult expectation of wriggling state of two chamber mirrors of resonant cavity under the impact of temperature gradient, seriously affected the bright dipping power stability of laser.
Summary of the invention
For the problems referred to above, the purpose of this invention is to provide and a kind ofly can efficient solution never cause distortion and the distortion of resonant cavity with the coefficient of expansion difference of material, and guarantee that two chamber mirrors of resonant cavity are parallel, have a built-in chamber helium neon laser that well goes out optical power stability simultaneously.
For achieving the above object, the present invention takes following technical scheme: a kind of built-in chamber helium neon laser, it is characterized in that: it comprises that a glass envelope and two employings can cut down the spill of the both ends open that metal material makes and can cut down connector, each described spill can be cut down connector and comprise a supporting construction and one and the integrated location structure of described supporting construction, and each described location structure end arranges a circle spill contiguous block; One cathode tube is set in described glass envelope, described cathode tube outer wall and described glass envelope inwall fit, described cathode tube passes by a tungsten bar negative pole that described glass envelope connects a high voltage source, the two ends of described glass envelope are sintered into one by the spill contiguous block of a tube connector and two described location structures respectively, also be provided with a capillary in described glass envelope, described two ends capillaceous are plugged in respectively two spills and can cut down in the location structure of connector; One described spill can be cut down connector and set gradually from inside to outside a completely reflecting mirror, a spring and a window, and this described spill can be cut down connector and draws the positive pole that connects high voltage source by a metal wire; Another described spill can be cut down connector and set gradually from inside to outside an outgoing mirror, a spring and a window, and each described window and each described spill can be cut down the end of connector makes respectively described completely reflecting mirror and outgoing mirror be close to described capillary both ends of the surface by pushing two springs after fixing.
One anode discharge hole and a cathodic discharge hole are set on described capillary, and the location structure that a spill can be cut down connector is aimed in described anode discharge hole, and described cathode tube is aimed in described cathodic discharge hole; Form a discharge channel between the positive and negative level of described anode discharge hole and cathodic discharge hole and high voltage source.
Described capillary both ends of the surface are set to concave surface and described concave surface chamfering, and making described completely reflecting mirror is that line contacts with outgoing mirror and described contact site capillaceous.
Described completely reflecting mirror and outgoing mirror consist of resonant cavity, and described resonant cavity adopts flat-concave cavity.
Described completely reflecting mirror is concave mirror, and concave surface is coated with high-reflecting film, and described outgoing mirror is the birefringence level crossing, and described birefringence level crossing inboard is coated with anti-reflection film, and the outside is coated with high-reflecting film.
Described completely reflecting mirror is level crossing, the inboard plating of described level crossing high-reflecting film, and described outgoing mirror is the birefringence concave mirror, concave surface plating anti-reflection film, plane plating high-reflecting film.
One steam vent also is set on described glass envelope, and described glass envelope, tube connector and spill can to cut down the coefficient of expansion of connector suitable.
the present invention is owing to taking above technical scheme, it has the following advantages: 1, the present invention includes a glass envelope, two spills can be cut down connector and a capillary, the two ends of glass envelope can be cut down connector by a tube connector and two spills respectively and be fixed together, in can cutting down connector, each spill is disposed with chamber mirror (completely reflecting mirror or outgoing mirror), spring and window, each window and each spill can be cut down the end of connector makes respectively completely reflecting mirror and outgoing mirror be close to the capillary both ends of the surface by extrusion spring after fixing, because the present invention is mode lock chamber mirror by spring compression, therefore the chamber mirror is no longer linked together by method and the glass shell of high temperature sintering, the material that has not only reduced the different coefficients of expansion when variations in temperature to the detrimental effect of chamber mirror collimation, and the chamber mirror that the internal stress of having eliminated high intermediate temperature sealing generation causes is wriggled, problem on deformation.2, glass shell of the present invention and glass shell and matrix can cut down the internal stress that produces because of sintering between connector and can effectively be absorbed by spring, " relatively independent resonant cavity " exerted an influence hardly, therefore the optical power stability that goes out of laser has been improved near a magnitude, and the stabilized speed that goes out luminous power of laser is largely increased.The present invention can be widely used in the manufacturing of helium neon laser.
Description of drawings
Fig. 1 is the overall structure schematic diagram of laser of the present invention;
Fig. 2 is glass envelope of the present invention and cathode tube installment state schematic diagram;
Fig. 3 is the installment state schematic diagram that glass envelope of the present invention and two ends spill can be cut down connector;
Fig. 4 is that outgoing mirror of the present invention and spring are enclosed the installment state schematic diagram that spill can be cut down connector;
Fig. 5 is the present invention's installment state schematic diagram capillaceous;
Fig. 6 is that completely reflecting mirror of the present invention and spring are enclosed the installment state schematic diagram that spill can be cut down connector.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail.
As shown in Figure 1, the present invention includes one adopts glass envelope 1 that tungsten family glass makes and two employings can cut down the spill with both ends open that metal material makes can to cut down connector 2, each spill can be cut down connector 2 and comprise a supporting construction 21 and one and the integrated location structure 22 of supporting construction 21, and the end arranged outside of each location structure 22 has a circle spill contiguous block 23.The interior cathode tube 3 that arranges of glass envelope 1, the inwall of the outer wall of cathode tube 3 and glass envelope 1 fits, cathode tube 3 passes glass envelope 1 by a tungsten bar 4 and is connected with the negative pole of the high voltage source of helium neon laser, move axially in glass envelope 1 in order to limit cathode tube 3, tungsten bar 4 is sintered into one with the junction of glass envelope 1.The two ends of glass envelope 1 inwardly are punctured into respectively horn-like and are fixedly connected with respectively a tube connector 5.The outer end of each tube connector 5 and the spill contiguous block 23 high intermediate temperature sealings of radio frequency make each spill can cut down connector 2 and are fixedly connected with glass envelope 1 and are integral.be provided with an elongated capillary 6 in glass envelope 1, the two ends of capillary 6 are plugged in respectively two spills and can cut down in the location structure 22 of connector 2, wherein the spill of the side supporting construction 21 that can cut down connector 2 is disposed with a completely reflecting mirror 7 from inside to outside, one spring 8 and a window 9, the supporting construction that the spill of opposite side can be cut down connector 2 is disposed with an outgoing mirror 10 from inside to outside, one spring 11 and a window 12, each window and each spill can be cut down the end of connector makes respectively completely reflecting mirror 7 and outgoing mirror 10 be close on capillary 6 both ends of the surface by extrusion spring after fixing.
in above-described embodiment, capillary 6 adopts glass to be made, one anode discharge hole 61 and a cathodic discharge hole (not shown) are set on capillary 6, the location structure 22 that the left side spill can be cut down connector 2 is aimed in anode discharge hole 6, spill can be cut down connector 2 draw the positive pole that connects the helium neon laser high voltage source by metal wire 62, cathode tube 3 is aimed in the cathodic discharge hole, the aperture in anode discharge hole and cathodic discharge hole is slightly larger than the internal diameter of capillary 6, its effect is exactly just to make capillary and high voltage source, form discharge channel between negative pole, but also make gas and air storage chamber UNICOM in capillary 6, to keep the pressure of region of discharge gas.
In the various embodiments described above, completely reflecting mirror 7 and outgoing mirror 10 consist of resonant cavity, and resonant cavity can adopt flat-concave cavity, and namely completely reflecting mirror 7 is concave mirror, and concave surface is coated with high-reflecting film, and outgoing mirror 10 is the birefringence level crossing, and the inboard is coated with anti-reflection film, and the outside is coated with high-reflecting film; Perhaps completely reflecting mirror 7 is level crossing, the inboard plating of level crossing high-reflecting film, and outgoing mirror 10 is the birefringence concave mirror, concave surface (inboard) plating anti-reflection film, plane (outside) plating high-reflecting film.
In the various embodiments described above, cathode tube 3 can adopt aluminum to be made, and the diameter of cathode tube 3 is slightly less than the diameter of glass envelope 1.
In the various embodiments described above, capillary 6 adopts line to contact with the contact site of completely reflecting mirror 7 and outgoing mirror 10, can grind concave surface by the both ends of the surface with capillary 6 and with the concave surface chamfering, purpose is to reduce the contact area of capillary 6 and completely reflecting mirror 7 and outgoing mirror 10 as far as possible, prevents thermal lensing effect.
In the various embodiments described above, also be provided with a steam vent 13 on glass envelope 1, be used for the body that fills, exits in glass envelope 1, and glass envelope 1, tube connector 5 and spill can to cut down the coefficient of expansion of connector 2 suitable.
As shown in Fig. 2～6, built-in chamber of the present invention helium neon laser encapsulation process is as follows:
1, the end with cathode tube 3 is welded and fixed in a rear insertion glass envelope 1 of tungsten bar 4, by " burn pearl ", an end of tungsten bar 4 is passed glass envelope 1 and is connected (as shown in Figure 2) with the high voltage source negative pole of helium neon laser.
2, with glass envelope 1 two ends by flame roast softening be punctured into horn-like, and with two tube connectors 5 respectively sintering at the two ends of glass envelope 1.
3, two tube connectors 5 are integral by the high intermediate temperature sealing of radio frequency with the matrix contiguous block 23 that two spills can be cut down each location structure 22 of connector 2 respectively, link into an integrated entity (as shown in Figure 3) with glass shell 1 respectively thereby make two spills can cut down connector 2.
4, outgoing mirror 10 and spring 11 are placed on the right side spill successively and can cut down in the supporting construction 21 of connector 2, and window 12 is pasted and fixed on spill can cuts down the end of connector 2 (as shown in Figure 4).
5, capillary 6 can be cut down connector 2 by the left side spill is inserted into the right side spill and can cuts down in the location structure 22 of connector 2, and cathode tube 3 is aimed in the cathodic discharge hole of capillary 6, and the location structure 22(that connector 2 can be cut down over against the left side spill in the anode discharge hole 61 of capillary 6 as shown in Figure 5).
6, the spill of completely reflecting mirror 7 and spring 8 being put into successively the left side can be cut down the supporting construction 21 of connector 2, and window 9 is pasted and fixed on the end that spill can be cut down connector 2, two windows 9,12 are adjacent to completely reflecting mirror 7 and outgoing mirror 10 respectively by pushing two springs 8,11 with the end face of capillary 6, and the spill in left side can be cut down connector 2 draw the positive pole (as shown in Figure 6) that connects the helium neon laser high voltage source by metal wire 62.
The various embodiments described above only are used for explanation the present invention, and wherein the structure of each parts and connected mode etc. all can change to some extent, and every equivalents of carrying out on the basis of technical solution of the present invention and improvement all should not got rid of outside protection scope of the present invention.
Claims (5)
1. built-in chamber helium neon laser, it is characterized in that: it comprises that a glass envelope and two employings can cut down the spill of the both ends open that metal material makes and can cut down connector, each described spill can be cut down connector and comprise a supporting construction and one and the integrated location structure of described supporting construction, and each described location structure end arranges a circle spill contiguous block; One cathode tube is set in described glass envelope, described cathode tube outer wall and described glass envelope inwall fit, described cathode tube passes by a tungsten bar negative pole that described glass envelope connects a high voltage source, the two ends of described glass envelope are sintered into one by the spill contiguous block of a tube connector and two described location structures respectively, also be provided with a capillary in described glass envelope, described two ends capillaceous are plugged in respectively two spills and can cut down in the location structure of connector; One described spill can be cut down connector and set gradually from inside to outside a completely reflecting mirror, a spring and a window, and this described spill can be cut down connector and draws the positive pole that connects high voltage source by a metal wire; Another described spill can be cut down connector and set gradually from inside to outside an outgoing mirror, a spring and a window, and each described window and each described spill can be cut down the end of connector makes respectively described completely reflecting mirror and outgoing mirror be close to described capillary both ends of the surface by pushing two springs after fixing;
Described capillary both ends of the surface are set to concave surface and described concave surface chamfering, and making described completely reflecting mirror is that line contacts with outgoing mirror and described contact site capillaceous;
One steam vent also is set on described glass envelope, and described glass envelope, tube connector and spill can to cut down the coefficient of expansion of connector suitable.
2. a kind of built-in chamber as claimed in claim 1 helium neon laser, it is characterized in that: an anode discharge hole and a cathodic discharge hole are set on described capillary, the location structure that a spill can be cut down connector is aimed in described anode discharge hole, the described cathode tube of described cathodic discharge hole aligning; Form a discharge channel between the positive and negative level of described anode discharge hole and cathodic discharge hole and high voltage source.
3. a kind of built-in chamber as claimed in claim 1 or 2 helium neon laser, it is characterized in that: described completely reflecting mirror and outgoing mirror consist of resonant cavity, and described resonant cavity adopts flat-concave cavity.
4. a kind of built-in chamber as claimed in claim 1 or 2 helium neon laser, it is characterized in that: described completely reflecting mirror is concave mirror, and concave surface is coated with high-reflecting film, and described outgoing mirror is the birefringence level crossing, described birefringence level crossing inboard is coated with anti-reflection film, and the outside is coated with high-reflecting film.
5. a kind of built-in chamber as claimed in claim 3 helium neon laser, it is characterized in that: described completely reflecting mirror is level crossing, the inboard plating of described level crossing high-reflecting film, described outgoing mirror is the birefringence concave mirror, concave surface plating anti-reflection film, plane plating high-reflecting film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210194751 CN102709795B (en) | 2012-06-13 | 2012-06-13 | Helium-neon gas laser with built-in cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210194751 CN102709795B (en) | 2012-06-13 | 2012-06-13 | Helium-neon gas laser with built-in cavity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102709795A CN102709795A (en) | 2012-10-03 |
| CN102709795B true CN102709795B (en) | 2013-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210194751 Expired - Fee Related CN102709795B (en) | 2012-06-13 | 2012-06-13 | Helium-neon gas laser with built-in cavity |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104868348A (en) * | 2015-05-11 | 2015-08-26 | 北京镭海激光科技有限公司 | Carbon dioxide laser tube with new structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4429399A (en) * | 1981-03-03 | 1984-01-31 | Tokyo Shibaura Denki Kabushiki Kaisha | Gas laser tube |
| US5127018A (en) * | 1989-08-08 | 1992-06-30 | Nec Corporation | Helium-neon laser tube with multilayer dielectric coating mirrors |
| CN1085015A (en) * | 1993-08-23 | 1994-04-06 | 东南大学 | 1.3 μ m helium neon laser |
| CN102294080A (en) * | 2011-09-30 | 2011-12-28 | 南京乐翔科技发展有限公司 | Helium-neon laser treatment device and manufacturing method thereof |
| CN102340091A (en) * | 2011-09-30 | 2012-02-01 | 南京乐翔科技发展有限公司 | He-Ne laser tube with flat inner cavity and manufacturing method thereof |
-
2012
- 2012-06-13 CN CN 201210194751 patent/CN102709795B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4429399A (en) * | 1981-03-03 | 1984-01-31 | Tokyo Shibaura Denki Kabushiki Kaisha | Gas laser tube |
| US5127018A (en) * | 1989-08-08 | 1992-06-30 | Nec Corporation | Helium-neon laser tube with multilayer dielectric coating mirrors |
| CN1085015A (en) * | 1993-08-23 | 1994-04-06 | 东南大学 | 1.3 μ m helium neon laser |
| CN102294080A (en) * | 2011-09-30 | 2011-12-28 | 南京乐翔科技发展有限公司 | Helium-neon laser treatment device and manufacturing method thereof |
| CN102340091A (en) * | 2011-09-30 | 2012-02-01 | 南京乐翔科技发展有限公司 | He-Ne laser tube with flat inner cavity and manufacturing method thereof |
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| CN102709795A (en) | 2012-10-03 |
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