WO1991014302A1 - Laser a halogenure de gaz rare a excitation par decharge - Google Patents
Laser a halogenure de gaz rare a excitation par decharge Download PDFInfo
- Publication number
- WO1991014302A1 WO1991014302A1 PCT/JP1991/000288 JP9100288W WO9114302A1 WO 1991014302 A1 WO1991014302 A1 WO 1991014302A1 JP 9100288 W JP9100288 W JP 9100288W WO 9114302 A1 WO9114302 A1 WO 9114302A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- dielectric
- main discharge
- auxiliary
- laser
- pair
- Prior art date
Links
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
-
- 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
- H01S3/038—Electrodes, e.g. special shape, configuration or composition
Definitions
- the present invention relates to a ⁇ -excited excimer laser device including a pair of main discharges and an auxiliary electrode.
- the dielectric surrounding the auxiliary electrode is cylindrical (round pipe) or flat, and the inner surface is in contact with the auxiliary dragon.
- the present invention employs the following means to increase the laser output and the performance.
- the apparatus of the present invention comprises: a pair of ⁇ electrodes arranged so as to be opposed to each other with the laser beam axis as a longitudinal direction and separated from the laser beam by the laser beam axis;
- a dielectric disposed opposite to one of the main discharge dragons, and an auxiliary opposed to the one of the above-described ⁇ electrodes via the dielectric, and the dielectric is formed in a cylindrical shape.
- the side facing the electrode is a plate-like portion
- the auxiliary S is included in the dielectric body with a space left therein, and is connected to the one main discharge electrode with the plate-like portion interposed therebetween.
- This is a Siijfe excimer laser device that is opposed to the other.
- the dielectric is formed in a cylindrical shape to be a side bleeding plate-like portion facing the main discharge, and the auxiliary is included in a form leaving a space in the dielectric. Also, the performance can be improved by being opposed to the one main dragon with the flat portion interposed therebetween.
- the main discharge or the auxiliary can be made dense on this surface.
- the pre-electron density can be increased.
- the height of the unevenness of the surface is preferably 100 m or less, and more preferably 100 m or less.
- the disgusting dielectric into a cylindrical shape having at least a flat plate-shaped portion, particularly a square pie “ ⁇ ”, it is possible to improve the insulated performance and further simplify the process of accommodating the auxiliary electrode.
- the rectangular pipes there is also a bar-shaped bar having a wall extending from one side of the plate-shaped portion toward one side of the plate-shaped portion, and an open side of the bar-shaped member having a wall.
- Examples of the type of the dielectric used in the present invention include ceramics such as alumina ceramics, quartz glass, borosilicate glass (for example, Dako-Kosungune ⁇ M, trade name Pyrex), and materials such as strontium titanate. Can be illustrated. BRIEF DESCRIPTION OF THE FIGURES
- FIG. 1 is a front view showing an electrode portion of a discharge excimer laser device
- FIG. 2 is a side sectional view thereof
- FIG. 3 is a front view of a dielectric portion
- FIG. 4 is a graph showing the state of occurrence of an auxiliary discharge (corona discharge) between one auxiliary electrode.
- Z indicates the direction of the laser beam
- a pair of main discharge electrodes that is, anodes 1 and 2 are arranged so as to face each other with the optical axis therebetween.
- 2 are formed in a shape or a comb.
- a dielectric 3 is placed outside the anodes 1 and 2.
- the dielectric 3 is made of a ceramic material, and as shown in FIG. 3, the ti portion 3b is directed toward one of the plate portions 3a from the ⁇ side of the plate portion 3a opposed to each other as shown in FIG.
- the extended U-shaped rod-shaped member 3c is joined to a flat-plate lid member 3d that covers the open side of the rod-shaped attachment 3c of this U-shaped rod to form a square pipe.
- both surfaces of the flat plate-shaped portion 3a are mirror-polished so that the height is 5 "m3 ⁇ 4g.
- the mirror surface is also applied to the joint surface between the rod-shaped attachment 3a and the lid member 3d. As a result, it is possible to suppress the constant deterioration from the boundary surface.
- an auxiliary B3 ⁇ 44 for flat work is included in the dielectric 3 while leaving the space C in such a manner as to oppose the flat portion 3a.
- the auxiliary electrode 4 is close to the inner surface of the flat portion 3a along the inner surface.
- A is an electrode terminal connected to the anode 1 and the auxiliary dragon 4
- B is an electrode terminal connected to the second electrode.
- auxiliary 4 functions as a capacitor to provide auxiliary discharge power.
- This auxiliary discharge is a corona discharge generated at the opening of the layer 2 through the dielectric 3.
- the capacitor formed by the auxiliary 2, the dielectric 3, and the auxiliary electrode 4 Due to the improved capacity, a large corona discharge current flows (Fig. 4, between a and b).
- the laser gas, the K r F excimer laser device ⁇ The, H e, N e, K r, a mixture of F 2 in Tokoro 3 ⁇ 4J »is side.
- the angle of the laser gas By changing the angle of the laser gas, the oscillation wavelength of the laser light can be changed.
- such a KrF excimer laser having a low XeCl, an ArF excimer laser or the like can be used.
- the output is ⁇ 4. energy 4.8 J Energy of 140 mJ was obtained, and high-efficiency oscillation of 3% was achieved. Availability of production m
- the dielectric in the excimer laser device, is formed in a cylindrical shape, the side facing the main discharge electrode is a plate-shaped portion, and the auxiliary electrode forms a space in the electric body.
- the pre-US electron separation density can be increased to increase the output of laser light. «Performance can also be improved. Therefore, it can be used for applications that require high output.
- the excimer laser device of the present invention can be used for, for example, a light source for lithography, micromachining of various materials (drilling force of various materials [including surface modification]), laser annealing, and the like.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Lasers (AREA)
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019910701514A KR920702048A (ko) | 1990-03-05 | 1991-03-04 | 방전여기 엑시머 레이저장치 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5318890 | 1990-03-05 | ||
JP2/53188 | 1990-03-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1991014302A1 true WO1991014302A1 (fr) | 1991-09-19 |
Family
ID=12935901
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1991/000288 WO1991014302A1 (fr) | 1990-03-05 | 1991-03-04 | Laser a halogenure de gaz rare a excitation par decharge |
Country Status (6)
Country | Link |
---|---|
US (1) | US5251226A (ja) |
EP (1) | EP0472735A4 (ja) |
JP (1) | JPH04211184A (ja) |
KR (1) | KR920702048A (ja) |
CA (1) | CA2054756A1 (ja) |
WO (1) | WO1991014302A1 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5293403A (en) * | 1992-09-30 | 1994-03-08 | The Unites States Of America As Represented By The Secretary Of The Navy | Pulse discharge laser with passive arc protection |
JP3428632B2 (ja) * | 1999-08-04 | 2003-07-22 | ウシオ電機株式会社 | ガスレーザ装置用コロナ予備電離電極 |
JP3552979B2 (ja) * | 1999-09-16 | 2004-08-11 | ウシオ電機株式会社 | ArFエキシマレーザ装置 |
US10574021B2 (en) | 2016-05-13 | 2020-02-25 | Corning Incorporated | Optical tube waveguide lasing medium and related method |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6191983A (ja) * | 1984-10-11 | 1986-05-10 | Mitsubishi Electric Corp | 放電励起短パルスレ−ザ装置 |
JPS63228685A (ja) * | 1987-03-17 | 1988-09-22 | Mitsubishi Electric Corp | 放電励起レ−ザ装置 |
JPH01307284A (ja) * | 1988-06-06 | 1989-12-12 | Agency Of Ind Science & Technol | 放電電極 |
JPH02187086A (ja) * | 1989-01-13 | 1990-07-23 | Mitsubishi Electric Corp | 放電励起型短パルスレーザ装置 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3705165A1 (de) * | 1986-02-18 | 1987-08-20 | Mitsubishi Electric Corp | Mit entladungserregung arbeitende laservorrichtung fuer kurze impulse |
-
1991
- 1991-03-04 KR KR1019910701514A patent/KR920702048A/ko not_active Application Discontinuation
- 1991-03-04 US US07/775,937 patent/US5251226A/en not_active Expired - Fee Related
- 1991-03-04 CA CA002054756A patent/CA2054756A1/en not_active Abandoned
- 1991-03-04 WO PCT/JP1991/000288 patent/WO1991014302A1/ja not_active Application Discontinuation
- 1991-03-04 EP EP19910904820 patent/EP0472735A4/en not_active Withdrawn
- 1991-03-05 JP JP3038495A patent/JPH04211184A/ja active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6191983A (ja) * | 1984-10-11 | 1986-05-10 | Mitsubishi Electric Corp | 放電励起短パルスレ−ザ装置 |
JPS63228685A (ja) * | 1987-03-17 | 1988-09-22 | Mitsubishi Electric Corp | 放電励起レ−ザ装置 |
JPH01307284A (ja) * | 1988-06-06 | 1989-12-12 | Agency Of Ind Science & Technol | 放電電極 |
JPH02187086A (ja) * | 1989-01-13 | 1990-07-23 | Mitsubishi Electric Corp | 放電励起型短パルスレーザ装置 |
Also Published As
Publication number | Publication date |
---|---|
EP0472735A1 (en) | 1992-03-04 |
JPH04211184A (ja) | 1992-08-03 |
KR920702048A (ko) | 1992-08-12 |
US5251226A (en) | 1993-10-05 |
CA2054756A1 (en) | 1991-09-06 |
EP0472735A4 (en) | 1992-05-13 |
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