CN101335420A - Off-axis air-intaking discharging glass tube for large power gas laser - Google Patents
Off-axis air-intaking discharging glass tube for large power gas laser Download PDFInfo
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- CN101335420A CN101335420A CNA2008100485261A CN200810048526A CN101335420A CN 101335420 A CN101335420 A CN 101335420A CN A2008100485261 A CNA2008100485261 A CN A2008100485261A CN 200810048526 A CN200810048526 A CN 200810048526A CN 101335420 A CN101335420 A CN 101335420A
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- straight pipe
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Abstract
The invention provides an off-axis intake discharging glass pipe which is used for a fast axial flow gas laser. The off-axis intake discharging glass pipe comprises a vertical intake part and a level straight pipe part which are communicated; the connecting part of the vertical intake part and the level straight pipe part is a 'bulge shape', namely the longitudinal length of the connecting part is longer than the outer diameter of the intake part, the transverse diameter of the connecting part is larger than the outer diameter of the level straight pipe part, and the connecting part in the level direction is connected by a round arc part with the level straight pipe part. The axes of the level straight pipe part and the vertical intake part are not crossed in space but have a certain distance to form the feature of off-axis gas intake. The off-axis intake mode of the structure is obviously different from the axis symmetrical intake mode of the traditional cross discharging pipe and can form sufficient and effective turbulent flow, thus being characterized by uniform distribution of gas gaining medium flow field and sufficient symmetry, and further guaranteeing the stable glow discharge in large volume of the discharging pipe in the structure, also guaranteeing the availability of the ideal, symmetric, uniform, stable and reliable output laser beam quality.
Description
Technical field
The present invention relates to a kind of Laser Devices, be specially a kind of off-axis air inlet discharge glass tube that is used for axial fast flow gas laser.
Background technology
Discharge glass tube is one of core cell of axial fast flow gas laser, and air inlet and place, gas outlet are provided with anode and negative electrode respectively.In case between the yin, yang electrode, add high voltage, will in glass tube, form gas discharge channel, discharge plasma passes through region of discharge fast under the effect of external blower fan, be injected into the electrical power in the discharge plasma, a part is converted to laser power output, another part is converted into heat energy raises gas temperature, and the high-temperature gas passes heat exchanger that discharge is produced cools off the back repetitive cycling to be used, to reduce operating cost and to obtain higher electricity conversion.The large volume uniformity and the reliability of discharge tube ionic medium body have directly determined the beam quality of output laser and the complete machine performance of laser.And the concrete structure of discharge tube has direct influence to discharge uniformity and stability.
Shown in Figure 1 is typical traditional cross discharge tube structure.Vertical air inlet part 1 also is the installation position of anode pin simultaneously; Outer the facing of gas outlet 2 connects cathode loop; Pre-ionization electrode installation position 3 is coaxial with induction part 1; Horizontal straight tube part 4 is glow discharge zones, also is laser gain vibration magnification region; The axis 5 of straight-tube portion 4 intersects with the axis 6 (axis of preionization installation position 3 just) of induction part 1, is a kind of axial symmetry intake method, has the insufficient and uneven shortcoming of gain media Flow Field Distribution of gas turbulence.
Summary of the invention
The object of the present invention is to provide a kind of off-axis air inlet discharge glass tube that is used for axial fast flow gas laser, this discharge glass tube can form fully, effective turbulence, has the advantages that the gas gain medium flow field is evenly distributed, symmetry is full.
The off-axis air inlet discharge glass tube that is used for axial fast flow gas laser provided by the invention, comprise the vertical air inlet part and the horizontal straight tube part that communicate, it is characterized in that: the connecting portion of horizontal straight tube part and vertical air inlet part is " bulge shape ", be the external diameter of the longitudinal length of connecting portion greater than the vertical air inlet part, the trans D of connecting portion is greater than the external diameter of horizontal straight tube part, and the horizontal direction of connecting portion links to each other with the transition of horizontal straight tube partial arc; The shortest vertical range between the axis of the axis of horizontal straight tube part and vertical air inlet part is greater than zero.
Off-axis air intake structure characteristics of the present invention obviously are different from the axial symmetry intake method in traditional cross discharge tube.Adopt the off-axis intake method, can form abundant, effective turbulence, therefore have the characteristics that the gas gain medium flow field is evenly distributed, symmetry is full, guaranteed large volume glow discharge stable the discharge tube from structure, so also just desirable provide guarantee with reliable and stable output laser beam quality symmetrically and evenly for obtaining.
Description of drawings
Fig. 1 is the structural representation of a kind of traditional axial symmetry air inlet discharge glass tube (cross discharge tube), and wherein 1 (a) is vertical end view, and 1 (b) is view in transverse section;
Fig. 2 is the structural representation of first example of off-axis air inlet discharge glass tube provided by the invention, and wherein 2 (a) are vertical end view, and 2 (b) are view in transverse section;
Fig. 3 is the structural representation that second example of off-axis air inlet discharge glass tube provided by the invention adopts the extrapolation mode, and wherein 3 (a) are vertical end view, and 3 (b) are view in transverse section.
Fig. 4 is the structural representation that second example of off-axis air inlet discharge glass tube provided by the invention adopts the direct sintering mode, and wherein 4 (a) are vertical end view, and 4 (b) are view in transverse section.
Embodiment
The present invention is further detailed explanation below in conjunction with accompanying drawing and example.
As shown in Figure 2, the structure of discharge glass tube provided by the invention is: vertical air inlet part 1 also is the installation position of anode pin simultaneously; Gas outlet 2 faces outward and connects the cathode loop installation position; Horizontal straight tube part 4 is glow discharge zones, also is laser gain vibration magnification region;
The connecting portion 8 of horizontal straight tube part 4 and vertical air inlet part 1 is " a bulge shape ", be the external diameter of the longitudinal length of connecting portion 8 greater than induction part 1, the trans D of connecting portion 8 is greater than the external diameter of horizontal straight tube part 4, the horizontal direction of connecting portion 8 links to each other with straight-tube portion 4 arc transition, and vertical direction links to each other with induction part 1.The axis 5 of horizontal straight tube part 4 and the distance between the straight line 7 are greater than zero.Straight line 7 is meant that the axis 5 with horizontal straight tube part intersects, and the straight line parallel with the axis 6 of vertical air inlet part.
In the structure shown in Figure 2, because the axis 5 of horizontal straight tube part 4 and the distance between the straight line 7 be greater than zero, then the axis 6 of the axis 5 of straight-tube portion 4 and induction part 1 is non-intersect, and deviation one segment distance forms off-axis air inlet characteristics.This design feature can make that air-flow forms fully at bulge 8 places, enter horizontal straight tube part 4 again after the effective turbulence.
Fig. 3 is the another kind of typical discharge glass tube with off-axis air intake structure characteristics, difference only is that Fig. 2 does not have the pre-ionization electrode setting, and Fig. 3 has pre-ionization electrode installation position 3, its axis 9 has an angle 45 degree with the vertical line 7 of crossing axis 5, requirement to this angle is not very tight, can change (as 0～90 degree) within the specific limits.Concrete pre-ionization electrode can be to be installed on position 3 in the extrapolation mode, also can be with pre-ionization electrode 10 direct sinterings at the position 3 places (as Fig. 4).
No matter whether discharge tube is provided with pre-ionization electrode, and the result of use of this off-axis intake method is all unaffected.
Claims (2)
1, a kind of off-axis air inlet discharge glass tube that is used for axial fast flow gas laser comprises the vertical air inlet part (1) and the horizontal straight tube part (4) that communicate, it is characterized in that:
The connecting portion (8) of horizontal straight tube part (4) and vertical air inlet part (1) is " a bulge shape ", be the external diameter of the longitudinal length of connecting portion (8) greater than vertical air inlet part (1), the trans D of connecting portion (8) is greater than the external diameter of horizontal straight tube part (4), and the horizontal direction of connecting portion (8) links to each other with horizontal straight tube part (4) arc transition; The shortest vertical range between the axis of the axis of horizontal straight tube part (4) and vertical air inlet part (1) is greater than zero.
2, off-axis air inlet discharge glass tube according to claim 1, it is characterized in that: it also comprises pre-ionization electrode installation position (3), the axis (9) of pre-ionization electrode installation position (3) is 0～90 degree with the angle of straight line (7), straight line (7) is meant that the axis (5) with horizontal straight tube part intersects, and with the parallel straight line of axis (6) of vertical air inlet part (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100485261A CN101335420A (en) | 2008-07-25 | 2008-07-25 | Off-axis air-intaking discharging glass tube for large power gas laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100485261A CN101335420A (en) | 2008-07-25 | 2008-07-25 | Off-axis air-intaking discharging glass tube for large power gas laser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101335420A true CN101335420A (en) | 2008-12-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100485261A Pending CN101335420A (en) | 2008-07-25 | 2008-07-25 | Off-axis air-intaking discharging glass tube for large power gas laser |
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| CN (1) | CN101335420A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103094816A (en) * | 2011-11-01 | 2013-05-08 | 石景林 | Cross flow gas laser with plane jet array placed in discharge area inlet portion |
| CN103880274A (en) * | 2012-12-21 | 2014-06-25 | 深圳市大族激光科技股份有限公司 | Processing making method of cross-shaped discharge tube |
| CN109687263A (en) * | 2018-12-26 | 2019-04-26 | 武汉光谷科威晶激光技术有限公司 | A kind of laser discharge glass tube |
-
2008
- 2008-07-25 CN CNA2008100485261A patent/CN101335420A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103094816A (en) * | 2011-11-01 | 2013-05-08 | 石景林 | Cross flow gas laser with plane jet array placed in discharge area inlet portion |
| CN103880274A (en) * | 2012-12-21 | 2014-06-25 | 深圳市大族激光科技股份有限公司 | Processing making method of cross-shaped discharge tube |
| CN103880274B (en) * | 2012-12-21 | 2017-01-25 | 大族激光科技产业集团股份有限公司 | Processing making method of cross-shaped discharge tube |
| CN109687263A (en) * | 2018-12-26 | 2019-04-26 | 武汉光谷科威晶激光技术有限公司 | A kind of laser discharge glass tube |
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Open date: 20081231 |