CN109687264B - Endoscope protection device capable of effectively removing charged particle pollution, laser and control method - Google Patents
Endoscope protection device capable of effectively removing charged particle pollution, laser and control method Download PDFInfo
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- CN109687264B CN109687264B CN201910041027.8A CN201910041027A CN109687264B CN 109687264 B CN109687264 B CN 109687264B CN 201910041027 A CN201910041027 A CN 201910041027A CN 109687264 B CN109687264 B CN 109687264B
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000013618 particulate matter Substances 0.000 title claims abstract description 9
- 239000002245 particle Substances 0.000 claims abstract description 16
- 230000005684 electric field Effects 0.000 claims abstract description 5
- 230000003287 optical effect Effects 0.000 claims description 16
- 239000000919 ceramic Substances 0.000 claims description 14
- 239000003344 environmental pollutant Substances 0.000 claims description 10
- 231100000719 pollutant Toxicity 0.000 claims description 10
- 230000007935 neutral effect Effects 0.000 claims description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 239000000356 contaminant Substances 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 239000002184 metal Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/02—Constructional details
- H01S3/03—Constructional details of gas laser discharge tubes
- H01S3/034—Optical devices within, or forming part of, the tube, e.g. windows, mirrors
- H01S3/0346—Protection of windows or mirrors against deleterious effects
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Lasers (AREA)
Abstract
The invention discloses a cavity mirror protection device for effectively removing charged particle pollution, a laser and a control method, wherein the cavity mirror protection device for effectively removing charged particle pollution comprises two end face baffles which are arranged in parallel and coaxially and are respectively provided with a central hole in the center, two outer side plates which are arranged up and down oppositely and are fixedly connected with the inner side of the end face baffles, two electrode plates which are arranged left and right and are respectively and fixedly connected with the outer side plates in an insulating manner, and a direct current power supply which is electrically connected with the electrode plates, wherein the electrode plates and the outer side plates enclose a laser channel corresponding to the central hole. The device is powered on through the metal polar plate, an electric field is formed inside the light-passing hole, and charged particles are collected in a deflection mode, so that damage and pollution of the particles to the mirror surface of the cavity mirror are reduced, and the light transmission quality is ensured.
Description
Technical Field
The invention belongs to the technical field of laser equipment, and particularly relates to a cavity mirror protection device for effectively removing charged particle pollution, a laser and a control method.
Background
Under the existing experimental working conditions, charged particles generated by the main vacuum chamber can move to the optical chamber through the connecting channel due to the effect of sputtering or leakage potential to pollute the mirror surface of the reflecting mirror, so that the surface type of the mirror is poor, the reflectivity is reduced, the quality of the light beam is deteriorated, and the influence on the whole experimental operation is extremely large.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides the cavity mirror protection device for effectively removing charged particle pollution, so that the mirror protection function is realized, the service life of a lens is prolonged, and the long-time and high-quality operation of a test is ensured. .
Meanwhile, the invention also discloses a laser and a control method thereof.
The invention is realized by the following technical scheme:
The utility model provides an effective cavity mirror protection device who removes charged particle pollution, includes two parallel coaxial settings and the center is formed with the terminal surface baffle of centre hole respectively, two relative setting about and with terminal surface baffle inboard fixed connection's lateral plate, two about set up and respectively with the lateral plate keep insulating fixedly connected's electrode plate to and with the direct current power supply of electrode plate electricity connection, wherein electrode plate and lateral plate enclose the synthesis with the laser passage that the centre hole corresponds.
In the above technical scheme, the outer side plate comprises a middle plate, two side plates respectively turned inwards vertically at two sides of the middle plate and extending relative to the middle plate, and side wing plates correspondingly turned outwards vertically relative to the side plates and extending, and the side wing plates of the two outer side plates keep a distance.
In the technical scheme, flanges are correspondingly formed at two ends of the outer side edge so as to be fixedly connected with the section baffle through bolts; the electrode plate is fixedly connected with the side wing plate of the outer side plate through the insulating ceramic seat.
In the technical scheme, the end face baffle, the electrode plate and the outer side plate are all made of stainless steel plates, and the insulating ceramic base is made of 99% alumina ceramic.
In the above technical scheme, one electrode plate is connected with the positive electrode of the direct current power supply, and the other electrode plate is grounded.
In the technical scheme, one electrode plate is connected with the negative electrode of the direct current power supply, and the other electrode plate is grounded or suspended.
In the above technical scheme, a protection plate for shielding the insulating ceramic base is arranged at the outer side of the electrode plate, and the protection plate is fixedly connected with the outer side plate and is insulated from the electrode plate.
In the technical scheme, the length of the laser channel is 800-2000mm, and the cross section is 50-100mm 150-200mm.
In the above technical scheme, the outer side of the end face baffle is provided with a locating plate perpendicular to the end face baffle, and the locating plate is respectively provided with at least one transversely extending supporting locating bolt.
The laser is characterized by comprising a cavity mirror and an optical cavity channel formed by a rectangular pipeline, wherein the optical cavity channel is coaxially provided with the cavity mirror protection device, and the positioning and jacking bolt is jacked and fixed with the inner wall of the rectangular pipeline.
In the above technical scheme, a hot cathode filament is arranged in the optical cavity channel or at the front end.
A control method of laser device, when the laser generator works, the hot cathode filament is started, the electrode plate is electrified, and in the working of the hot cathode filament, the electrons are released, part of the electrons are combined with the neutral large particle pollutant, and the electrons combined with the neutral large particle pollutant are deflected by the electrode plate to avoid bombarding the cavity mirror.
The invention has the advantages and beneficial effects that:
the device is powered on through the metal polar plate, an electric field is formed inside the light-passing hole, and charged particles are collected in a deflection mode, so that damage and pollution of the particles to the mirror surface of the cavity mirror are reduced, and the light transmission quality is ensured.
When the laser generator works, the hot cathode filament is started to electrify the electrode plate, a large amount of electrons are released in the working process of the hot cathode filament, part of electrons are combined with the neutral large particle pollutants, and the electrons combined with the neutral large particle pollutants are deflected by the electrode plate to avoid bombarding the cavity mirror.
Drawings
Fig. 1 is a schematic front view of a scope protection device.
Fig. 2 is a schematic diagram of the internal structure of the endoscope protection device.
Fig. 3 is a schematic diagram of the overall side view structure of the endoscope protection device.
1. End face baffle of laser channel 2
3. Positioning bolt 4 bolt fixing part
5. Insulating ceramic seat with threading hole 6
7. Outer side plate of electrode plate 8
9. Protection plate
Other relevant drawings may be made by those of ordinary skill in the art from the above figures without undue burden.
Detailed Description
In order to make the person skilled in the art better understand the solution of the present invention, the following describes the solution of the present invention with reference to specific embodiments.
Example 1
The invention relates to a cavity mirror protection device for effectively removing charged particle pollution, which comprises two end face baffles which are arranged in parallel and coaxially, the centers of the end face baffles are respectively provided with a central hole, two outer side plates which are arranged up and down oppositely and fixedly connected with the inner side faces of the end face baffles, two electrode plates which are arranged left and right and respectively and fixedly connected with the outer side plates in an insulating manner, and a direct current power supply electrically connected with the electrode plates, wherein the electrode plates and the outer side plates enclose a laser channel corresponding to the central holes.
The end face baffle, the electrode plate, the shell and the like jointly form a cylindrical protection device, the outer ring of the end face baffle is slightly larger than the outer diameter of the cylinder body, the effect of fixing the shell and the electrode plate is achieved, and the inner clear aperture reduces the area of pollutant transmission while guaranteeing barrier-free laser transmission. The electrode plates on two sides are installed on the outer side plate through insulating ceramics and screws and are insulated from the shell, the electrode plates are connected with wires, and the wires are connected with an external direct current power supply through threading holes. And applying a voltage of about-200V to one side polar plate, and grounding the other side of the polar plate, wherein charged particles deflect and collect on the negative polar plate under the action of an electric field without penetrating through a channel to pollute the mirror surface of the cavity mirror, so that the protection function of the cavity mirror is realized.
If a circuit on one side of the negative pressure polar plate is short-circuited or broken, the lead of the grounding polar plate can be directly changed from grounding to connecting with a negative pressure direct current power supply, and a collecting electric field in the light passing hole can be formed, so that on-line backup replacement is realized, and the reliability of the device is improved.
The laser channel is 800-2000mm long, the cross section is 150-200mm, such as a channel with the length of 1000mm and the cross section of 80mm x 180mm, and the light path is limited in a certain range while ensuring the whole transmission of laser.
Example 2
As a specific embodiment, the outer side plate comprises a middle plate, two side plates which are respectively folded inwards and extend vertically relative to the two sides of the middle plate, and side wing plates which are correspondingly folded outwards and extend vertically relative to the side plates, wherein the side wing plates of the two outer side plates keep a distance. Flanges are correspondingly formed at two ends of the outer side edge and fixedly connected with the section baffle through bolts;
The electrode plate is fixedly connected with the side wing plate of the outer side plate through the insulating ceramic seat. The end face baffle, the electrode plate and the outer side plate are all made of stainless steel plates, and the insulating ceramic base is made of 99% alumina ceramic.
Meanwhile, a protection plate for shielding the insulating ceramic base is arranged on the outer side of the electrode plate. For example, the protection plate is fixedly connected with the side wing plate. The protection plate prevents pollutant particles from polluting ceramics, and ensures the pressure endurance capability of the ceramics. Thus, the insulation property of the ceramic connecting piece is ensured, and the service life of the device is prolonged.
Example 3
The end face baffle outside be constructed with rather than the perpendicular locating plate, the locating plate on be provided with at least one, preferably two transversely extending's top through screw-thread fit and hold the locating bolt, the end face baffle size is 150mm 250mm, slightly is greater than the stack shell outer lane, plays fixed shell and polar plate to shelter from the effect of partial pollutant granule. The jacking positioning bolts are arranged on two sides of the end face baffle and can be transversely adjusted, namely, the tightness of the jacking positioning bolts can finely adjust and fix the transverse position of the protection device on the endoscope protection device.
Example 4
The invention also discloses a laser, which comprises a cavity mirror and an optical cavity channel formed by rectangular pipelines, wherein the optical cavity channel is coaxially provided with the cavity mirror protection device, and the positioning and jacking bolt is propped and fixed with the inner wall of the rectangular pipeline.
The length of the optical cavity channel is generally more than 1m or 2m, the optical cavity channel is embedded into the optical cavity channel through the corresponding cavity lens protection device, only a proper operation space is reserved at two ends of the optical cavity channel, the cavity lens protection is effectively improved on the premise of not increasing the whole volume, positioning is realized by means of the bottom surface of the end face baffle in the height direction, loading configuration is simple in the transverse direction, position fine adjustment and positioning are realized by means of adjustment of the supporting positioning bolt, and the light emitting effect is effectively ensured.
Preferably, the laser generator side is used as the front, the cavity mirror side is used as the rear, and a hot cathode filament is arranged at the front end in the optical cavity channel or at the front end of the optical cavity channel. When the laser generator works, the hot cathode filament is started to electrify the electrode plate, a large amount of electrons are released in the working process of the hot cathode filament, part of electrons are combined with the neutral large particle pollutants, and the electrons combined with the neutral large particle pollutants are deflected by the electrode plate to avoid bombarding the cavity mirror.
Spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used in the embodiments for ease of description to describe one element or feature's relationship to another element or feature's illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "under" other elements or features would then be oriented "over" the other elements or features. Thus, the exemplary term "lower" may encompass both an upper and lower orientation. The device may be otherwise positioned (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
The foregoing has described exemplary embodiments of the invention, it being understood that any simple variations, modifications, or other equivalent arrangements which would not unduly obscure the invention may be made by those skilled in the art without departing from the spirit of the invention.
Claims (5)
1. A control method of laser device, said laser device includes cavity mirror and optical cavity channel formed by rectangular pipeline, a cavity mirror protection device for effectively removing charged particle pollution is coaxially set in said optical cavity channel, said cavity mirror protection device includes two end face baffles which are parallel and coaxial and whose centre is respectively formed with centre hole, two outer side plates which are up-down opposite and fixedly connected with inner side of said end face baffle, two electrode plates which are left-right set and respectively and fixedly connected with said outer side plates in insulating mode, and direct current power supply and hot cathode lamp wire which are electrically connected with said electrode plates, in which said electrode plates and outer side plates are enclosed into a laser channel correspondent to said centre hole, the electrode plates are connected with wire, the wire is connected with external direct current power supply by means of threading hole, applying voltage of about-200V to one side polar plate, grounding the other side, deflecting and collecting charged particles on the negative-pressure polar plate under the action of an electric field, constructing a locating plate vertical to the end-face baffle outside, respectively arranging at least one transversely extending jacking locating bolt on the locating plate, jacking and fixing the jacking locating bolt and the inner wall of the rectangular pipeline, embedding the optical cavity channel length in the optical cavity channel length of 1m or 2m through a corresponding cavity lens protecting device, only leaving proper operation space at two ends, effectively improving the cavity lens protection on the premise of not increasing the whole volume, and being characterized in that when the laser works, a hot cathode lamp wire is started to electrify the polar plate, and releases electrons in the working of the hot cathode lamp wire, part of electrons are combined with neutral large particle pollutants, electrons and electrons combined with neutral large particle contaminants are deflected by the electrode plates to avoid bombarding the cavity mirror.
2. The method of controlling a laser according to claim 1, characterized in that: the outer side plates comprise a middle plate, two side plates which are respectively and vertically folded inwards and extended at two sides of the middle plate relative to the middle plate, and side wing plates which are correspondingly folded outwards and extended relative to the side plates vertically, wherein the side wing plates of the two outer side plates keep a distance.
3. The control method of a laser according to claim 2, characterized in that: the electrode plate is fixedly connected with the side wing plate of the outer side plate through the insulating ceramic seat.
4. A control method of a laser according to claim 3, characterized in that: the end face baffle, the electrode plate and the outer side plate are all made of stainless steel plates, and the insulating ceramic base is made of 99% alumina ceramic.
5. The method of controlling a laser according to claim 4, wherein: the outer side of the electrode plate is provided with a protection plate which shields the insulating ceramic base therein, and the protection plate is fixedly connected with the outer side plate and is insulated with the electrode plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910041027.8A CN109687264B (en) | 2019-01-16 | 2019-01-16 | Endoscope protection device capable of effectively removing charged particle pollution, laser and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910041027.8A CN109687264B (en) | 2019-01-16 | 2019-01-16 | Endoscope protection device capable of effectively removing charged particle pollution, laser and control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109687264A CN109687264A (en) | 2019-04-26 |
| CN109687264B true CN109687264B (en) | 2024-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910041027.8A Active CN109687264B (en) | 2019-01-16 | 2019-01-16 | Endoscope protection device capable of effectively removing charged particle pollution, laser and control method |
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| CN (1) | CN109687264B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4720832A (en) * | 1985-09-21 | 1988-01-19 | Ushio Denki | Gas laser including means for magnetic deflection of ions |
| CN101383475A (en) * | 2007-09-07 | 2009-03-11 | 中国科学院大连化学物理研究所 | Anti-pollution method for cavity mirror in optical resonance cavity and special apparatus |
| CN209487924U (en) * | 2019-01-16 | 2019-10-11 | 核工业理化工程研究院 | Effectively remove hysteroscope protective device, the laser of charged particle pollution |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007033701A1 (en) * | 2007-07-14 | 2009-01-22 | Xtreme Technologies Gmbh | Method and arrangement for cleaning optical surfaces in plasma-based radiation sources |
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2019
- 2019-01-16 CN CN201910041027.8A patent/CN109687264B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4720832A (en) * | 1985-09-21 | 1988-01-19 | Ushio Denki | Gas laser including means for magnetic deflection of ions |
| CN101383475A (en) * | 2007-09-07 | 2009-03-11 | 中国科学院大连化学物理研究所 | Anti-pollution method for cavity mirror in optical resonance cavity and special apparatus |
| CN209487924U (en) * | 2019-01-16 | 2019-10-11 | 核工业理化工程研究院 | Effectively remove hysteroscope protective device, the laser of charged particle pollution |
Non-Patent Citations (1)
| Title |
|---|
| 化学激光气流污染及清洁方式对腔镜反射率的影响;赵伟力;房本杰;李君;金玉奇;桑凤亭;;海军工程大学学报(第04期);全文 * |
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| CN109687264A (en) | 2019-04-26 |
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