WO2002076156A1 - Verfahren und worrichtung zur erzeugung von euv-strahlung - Google Patents
Verfahren und worrichtung zur erzeugung von euv-strahlung Download PDFInfo
- Publication number
- WO2002076156A1 WO2002076156A1 PCT/EP2002/002772 EP0202772W WO02076156A1 WO 2002076156 A1 WO2002076156 A1 WO 2002076156A1 EP 0202772 W EP0202772 W EP 0202772W WO 02076156 A1 WO02076156 A1 WO 02076156A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- target
- charged particles
- electrically charged
- radiation
- laser pulses
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05G—X-RAY TECHNIQUE
- H05G2/00—Apparatus or processes specially adapted for producing X-rays, not involving X-ray tubes, e.g. involving generation of a plasma
- H05G2/001—X-ray radiation generated from plasma
- H05G2/003—X-ray radiation generated from plasma being produced from a liquid or gas
Definitions
- the invention relates to a method of the type mentioned in the preamble of claim 1 and a device of the type mentioned in the preamble of claim 14 for generating UV radiation, in particular EUV radiation.
- EUV extreme ultraviolet
- BESTATIGUNGSKOPIE in which laser pulses are used to generate a plasma that emits EUV radiation.
- laser pulses are directed at a high repetition rate onto a target which consists, for example, of xenon, a plasma being produced when the target is irradiated, which emits the EUV radiation.
- the EUV radiation generated in this way can then be used, for example, in EUV lithography in the production of semiconductor circuits.
- a disadvantage of the known methods is that the laser pulses must have a high energy so that a plasma which emits EUV radiation is generated in the desired manner.
- the high power lasers required in the known methods are therefore complex and expensive, so that economical use in the mass production of semiconductor circuits is not possible.
- the invention is based on the object of specifying a method and a device for generating UV radiation, in particular EUV radiation, in which or in which the generation of UV radiation, in particular EUV radiation, using simple means and thus inexpensively is possible.
- the invention is based on the knowledge that an economical use of lasers in the production of an EUV radiation-emitting plasma is only possible if simple and inexpensive lasers are used, but that the power of such lasers for generating the plasma is not sufficient. Proceeding from this, the invention is based on the idea not to direct the laser pulses directly onto the target, but to amplify the energy of the laser pulses beforehand in such a way that a plasma which emits EUV radiation can be generated in the desired manner. To increase the energy of the laser pulses, the invention provides
- Teach that the laser pulses are directed at photoelectric transducer means that generate pulses of electrically charged particles under the action of the laser pulses. These electrically charged particles can then be accelerated in a simple manner in an electrical field to such an extent that when the particles subsequently hit the target, sufficient energy is available to generate a plasma which emits EUV radiation.
- the increase in the energy of the particles is only limited by the strength of the electric field, so that with appropriate selection of the field strength of the field, the energy of the particles can easily be increased to such an extent that EUV radiation is emitted when it subsequently hits the target Plasma is generated.
- the method according to the invention can be used wherever UV radiation, in particular EUV radiation, is required.
- the method according to the invention is particularly well suited for use in EUV lithography.
- any electrically charged particles can be used.
- Such photocathodes are inexpensive, so that the method according to the invention according to this development is particularly simple and therefore inexpensive to carry out.
- an anode is used to accelerate the electrons, to which a high voltage is applied.
- the degree of increase in the energy of the electrons until it hits the target is only dependent on the value of the high voltage applied.
- the anode is expediently essentially annular, so that the electrons pass through the opening in the anode and are thereby accelerated. This makes it possible in a particularly simple manner to direct the electrons onto the target arranged behind the anode in the beam direction of the electron beam.
- the electrically charged particles are focused on the target.
- a further development of the aforementioned embodiment provides that the electrically charged particles are focused using at least one electromagnetic optic.
- Such electromagnetic optics are simple and therefore inexpensive to implement, so that the method according to the invention is simple and therefore inexpensive to carry out.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
- X-Ray Techniques (AREA)
- Exposure Of Semiconductors, Excluding Electron Or Ion Beam Exposure (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02730003A EP1285560A1 (de) | 2001-03-15 | 2002-03-13 | Verfahren und worrichtung zur erzeugung von euv-strahlung |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10113064.3 | 2001-03-15 | ||
DE10113064A DE10113064B4 (de) | 2001-03-15 | 2001-03-15 | Verfahren und Einrichtung zur Erzeugung von UV-Strahlung, insbesondere von EUV-Strahlung |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002076156A1 true WO2002076156A1 (de) | 2002-09-26 |
Family
ID=7677949
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2002/002772 WO2002076156A1 (de) | 2001-03-15 | 2002-03-13 | Verfahren und worrichtung zur erzeugung von euv-strahlung |
Country Status (4)
Country | Link |
---|---|
US (1) | US20030189176A1 (de) |
EP (1) | EP1285560A1 (de) |
DE (1) | DE10113064B4 (de) |
WO (1) | WO2002076156A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4885587B2 (ja) * | 2006-03-28 | 2012-02-29 | 株式会社小松製作所 | ターゲット供給装置 |
DE102013209447A1 (de) * | 2013-05-22 | 2014-11-27 | Siemens Aktiengesellschaft | Röntgenquelle und Verfahren zur Erzeugung von Röntgenstrahlung |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4970392A (en) * | 1990-01-17 | 1990-11-13 | Thermo Electron Corporation | Stably emitting demountable photoelectron generator |
JPH05258692A (ja) * | 1992-03-10 | 1993-10-08 | Nikon Corp | X線発生方法およびx線発生装置 |
US5487078A (en) * | 1994-03-14 | 1996-01-23 | Board Of Trustees Of The University Of Illinois | Apparatus and method for generating prompt x-radiation from gas clusters |
DE19604272A1 (de) * | 1995-02-06 | 1996-08-08 | Nat Research Inst For Metals T | Laserbestrahlungs-Elektronenkanone |
US5577091A (en) * | 1994-04-01 | 1996-11-19 | University Of Central Florida | Water laser plasma x-ray point sources |
WO2002011499A1 (en) * | 2000-07-28 | 2002-02-07 | Jettec Ab | Method and apparatus for generating x-ray or euv radiation |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4715038A (en) * | 1985-05-20 | 1987-12-22 | The United States Of America As Represented By The United States Department Of Energy | Optically pulsed electron accelerator |
EP0334334B1 (de) * | 1988-03-23 | 1995-06-07 | Fujitsu Limited | Photokathoden-Bildprojektionsapparat für die Mustergestaltung auf einer Halbleitervorrichtung |
US5930331A (en) * | 1989-03-22 | 1999-07-27 | Rentzepis; Peter M. | Compact high-intensity pulsed x-ray source, particularly for lithography |
US5335258A (en) * | 1993-03-31 | 1994-08-02 | The United States Of America As Represented By The Secretary Of The Navy | Submicrosecond, synchronizable x-ray source |
GB9308981D0 (en) * | 1993-04-30 | 1993-06-16 | Science And Engineering Resear | Laser-excited x-ray source |
US5637962A (en) * | 1995-06-09 | 1997-06-10 | The Regents Of The University Of California Office Of Technology Transfer | Plasma wake field XUV radiation source |
DE19949978A1 (de) * | 1999-10-08 | 2001-05-10 | Univ Dresden Tech | Elektronenstoßionenquelle |
-
2001
- 2001-03-15 DE DE10113064A patent/DE10113064B4/de not_active Expired - Fee Related
-
2002
- 2002-03-13 US US10/276,104 patent/US20030189176A1/en not_active Abandoned
- 2002-03-13 WO PCT/EP2002/002772 patent/WO2002076156A1/de not_active Application Discontinuation
- 2002-03-13 EP EP02730003A patent/EP1285560A1/de not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4970392A (en) * | 1990-01-17 | 1990-11-13 | Thermo Electron Corporation | Stably emitting demountable photoelectron generator |
JPH05258692A (ja) * | 1992-03-10 | 1993-10-08 | Nikon Corp | X線発生方法およびx線発生装置 |
US5487078A (en) * | 1994-03-14 | 1996-01-23 | Board Of Trustees Of The University Of Illinois | Apparatus and method for generating prompt x-radiation from gas clusters |
US5577091A (en) * | 1994-04-01 | 1996-11-19 | University Of Central Florida | Water laser plasma x-ray point sources |
DE19604272A1 (de) * | 1995-02-06 | 1996-08-08 | Nat Research Inst For Metals T | Laserbestrahlungs-Elektronenkanone |
WO2002011499A1 (en) * | 2000-07-28 | 2002-02-07 | Jettec Ab | Method and apparatus for generating x-ray or euv radiation |
Non-Patent Citations (3)
Title |
---|
GOUGE M J ET AL: "A cryogenic xenon droplet generator for use in a compact laser plasma x-ray source", REVIEW OF SCIENTIFIC INSTRUMENTS, AMERICAN INSTITUTE OF PHYSICS. NEW YORK, US, vol. 68, no. 5, May 1997 (1997-05-01), pages 2158 - 2162, XP002168198, ISSN: 0034-6748 * |
PATENT ABSTRACTS OF JAPAN vol. 018, no. 017 (E - 1488) 12 January 1994 (1994-01-12) * |
TER-AVETISYAN S A ET AL: "Soft X-ray emission of E-beam excited clustered supersonic gas jet", PROCEEDINGS OF THE SPIE - THE INTERNATIONAL SOCIETY FOR OPTICAL ENGINEERING, 2000, SPIE-INT. SOC. OPT. ENG, USA, vol. 4060, pages 204 - 208, XP001086665, ISSN: 0277-786X * |
Also Published As
Publication number | Publication date |
---|---|
DE10113064B4 (de) | 2004-05-19 |
EP1285560A1 (de) | 2003-02-26 |
DE10113064A1 (de) | 2002-10-02 |
US20030189176A1 (en) | 2003-10-09 |
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