WO2013141578A1 - 플라즈마를 이용한 극자외선 발생장치 - Google Patents
플라즈마를 이용한 극자외선 발생장치 Download PDFInfo
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- WO2013141578A1 WO2013141578A1 PCT/KR2013/002249 KR2013002249W WO2013141578A1 WO 2013141578 A1 WO2013141578 A1 WO 2013141578A1 KR 2013002249 W KR2013002249 W KR 2013002249W WO 2013141578 A1 WO2013141578 A1 WO 2013141578A1
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- plasma
- extreme ultraviolet
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- 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
- H05G2/008—X-ray radiation generated from plasma involving a beam of energy, e.g. laser or electron beam in the process of exciting the plasma
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/70008—Production of exposure light, i.e. light sources
- G03F7/70033—Production of exposure light, i.e. light sources by plasma extreme ultraviolet [EUV] sources
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- 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 present invention relates to an extreme ultraviolet generator using plasma, and more particularly, to an extreme ultraviolet generator capable of generating an extreme ultraviolet beam while simplifying the structure as much as possible.
- the resolution of the exposure apparatus is proportional to the numerical aperture (NA) of the transfer optical system and inversely proportional to the wavelength of light used for exposure. For this reason, as an attempt to increase the resolution, an attempt has been made to use an Extreme Ultraviolet (EUV) light source having a short wavelength instead of visible or ultraviolet light for exposure transfer.
- EUV Extreme Ultraviolet
- As the EUV light generating device used in such an exposure transfer device there are a laser plasma EUV light source and a discharge plasma EUV light source.
- the wavelength used in the EUV exposure apparatus is 20 nm or less, and a typical 13.5 nm light source has been widely researched and developed using Ne plasma using Ne gas as a reaction material of a laser plasma light source. It has efficiency (ratio of EUV light intensity obtained with respect to input energy). Since Ne is a gaseous material at room temperature, the problem of debris is difficult. However, in order to obtain a high output EUV light source, there is a limit to using Ne gas as a target, and it is also desired to use other materials.
- the region of 200 nm to 100 nm corresponding to half of the long wavelength side is called VUV light and the region of 100 nm to 10 nm corresponding to half of the short wavelength side is generally called EUV light.
- EUV light with a center wavelength of less than 100 nm from plasma is absorbed by the optical system such as air or condenser mirror (applied with a general reflective coating), and thus is not absorbed by the optical system.
- Korean Patent Application No. 10-2011-0017579 name of the invention: when looking at the stabilized extreme ultraviolet light generating apparatus using a plasma through Figure 1, the laser source 10 for outputting a laser, in the laser source
- the gas cell 20 which generates extreme ultraviolet rays by generating a plasma by a laser and a gas by receiving a gas from a gas supply path to a plasma induction path corresponding to a section in which the output laser is incident and focused.
- the first vacuum chamber unit 30 which maintains a constant vacuum degree
- the second vacuum chamber which maintains a constant vacuum degree as a space for injecting extreme ultraviolet rays generated from the gas cell and emitting the extreme ultraviolet rays to the outside.
- the unit 40 a gas supply unit for supplying a gas for inducing the laser and the plasma to the gas supply path of the gas cell and the first dust And a first vacuum pump and a second vacuum pump for forming vacuum degrees of the empty chamber portion and the second vacuum chamber portion, respectively, and a plurality of optical systems 71 to 75 transferring light output from the race source.
- the extreme ultraviolet ray generating apparatus corresponds to a very excellent technology capable of generating stabilized extreme ultraviolet ray through the plasma reaction as the invention filed by the present applicant.
- the present invention for solving the problems as described above, stabilization using a plasma that can produce a stabilized extreme ultraviolet beam while simplifying the structure as much as possible, minimizing efficiency degradation, and can effectively capture the EUV light source generated from the plasma
- An object of the present invention is to provide an extreme ultraviolet generator.
- Another object of the present invention is to provide a plasma induced reaction gas cell capable of generating optimal extreme ultraviolet (EUV) light through plasma induction using a reaction gas.
- EUV extreme ultraviolet
- a laser source for outputting a laser for outputting a laser
- FM (Focusing focusing the laser beam reflected from the TLM) Mirror) is supplied with a reaction gas from a gas supply path to a plasma induction furnace corresponding to a section in which the laser focused by the FM is focused and generates plasma by a laser beam and the reaction gas to generate extreme ultraviolet rays.
- a vacuum chamber for accommodating the gas cell and the TLM, FM, and the gas cell in a vacuum state.
- the first aperture is provided for the alignment of the laser beam focused in the FM, and the second aperture for transmitting only the central wavelength in the extreme ultraviolet beam generated in the gas cell.
- the vacuum chamber is divided into a first vacuum chamber portion and a second vacuum chamber portion, the second vacuum chamber portion maintains a higher vacuum than the first vacuum chamber portion, the first vacuum chamber portion, TLM, FM And a gas cell and a first aperture, wherein the second vacuum chamber part is configured to receive the second aperture.
- a beam splitter for reflecting a part of the light reflected by the TLM and an image sensor for detecting a wavefront (wavefront) of the beam reflected through the beam splitter.
- the laser source may have an IR wave length of 800 nm to 1600 nm and a pulse width of 30 fs to 50 fs.
- the first aperture may be removed after aligning the beam output from the FM.
- the body having a length shape having a predetermined length
- the light induction furnace formed on each side in the longitudinal direction of the body, the plasma induction furnace located between the light induction furnace, And a gas injection path configured to communicate with the plasma induction furnace, and a gas injection path for supplying a plasma reaction gas supplied from the outside, and a gas exhaust path communicating with the light induction furnace to exhaust the gas present in the plasma induction furnace to the outside.
- a gas injection path configured to communicate with the plasma induction furnace, and a gas injection path for supplying a plasma reaction gas supplied from the outside, and a gas exhaust path communicating with the light induction furnace to exhaust the gas present in the plasma induction furnace to the outside.
- the body may further include a side cap covering the opening side of each of the light induction paths and having a hole through which light may pass.
- the side cap is characterized in that it comprises a metal material including metal, SUS, aluminum, copper or a glass material such as quartz, fused silica.
- the body is characterized in that the cross-sectional area is configured to have a size of 20 ⁇ 20mm or less.
- the plasma induction furnace is characterized in that the width is configured to have a size of 0.9 ⁇ 1.1mm.
- the width B of the light guide path is characterized in that it is larger than the width A of the plasma guide path.
- the hole (E) is characterized in that it is formed smaller than the width (B) of the light guide.
- the gas exhaust passage may include at least two or more gas exhaust passages.
- the body is characterized in that composed of any one of quartz, fused silica.
- the present invention constructed and operated as described above has the advantage that the structure is very simple under the conditions for generating EUV light, so that the manufacturing is easy and cost reduction can be realized.
- the present invention has the advantage of providing a gas cell that is optimally designed for plasma induction through the source light and the reaction gas to generate extreme ultraviolet (EUV) light through plasma induction.
- EUV extreme ultraviolet
- FIG. 1 is a configuration diagram of an extreme ultraviolet ray generating apparatus using a plasma according to the prior art
- FIG. 2 is a configuration diagram of an extreme ultraviolet ray generating apparatus using a plasma according to the present invention
- Figure 3 is a detailed view of the extreme ultraviolet light generating apparatus using the plasma according to the present invention.
- FIG. 4 is a perspective view of a plasma induced gas cell for generating extreme ultraviolet light according to the present invention.
- FIG. 5 is a perspective view of a plasma induction gas cell according to the present invention.
- FIG. 6 is a cutaway perspective view of a plasma induction gas cell according to the present invention.
- FIG. 7 is a cross-sectional view of a plasma induction gas cell according to the present invention.
- FIG. 8 is a view showing the light transmission of the plasma induction gas cell according to the present invention.
- FIG. 9 is a cross-sectional view showing a plasma induced gas cell in another embodiment according to the present invention.
- FIG. 10 is a top view showing a state in which a plasma induction gas cell is fixed through a bracket according to the present invention
- FIG. 11 is a perspective view of a plasma induction gas cell fixing bracket according to the present invention.
- the extreme ultraviolet generator using the plasma includes a laser source 100 for outputting a laser, a TLM (Tunable Laser Mirror; 220) for reflecting a laser beam output from the laser source, and a laser beam reflected from the TLM.
- Focusing Mirror FM for focusing the laser, and receiving a reaction gas from a gas supply path to a plasma induction furnace corresponding to a section in which the laser focused in the FM is focused. It is characterized in that it comprises a gas cell 240 for generating extreme ultraviolet rays to form a and the vacuum chamber (200, 210) for receiving the TLM, FM, gas cells in a vacuum state.
- the extreme ultraviolet generator according to the present invention is to provide an extreme ultraviolet generator that can satisfy the efficiency of the extreme ultraviolet light while simplifying the structure of the optical system for transmitting the light output from the laser source in the apparatus for generating EUV light Make a point.
- FIG. 2 is a configuration diagram of an apparatus for generating extreme ultraviolet rays using plasma according to the present invention.
- the extreme ultraviolet generator using the plasma according to the present invention includes a laser source 100 for outputting a laser beam, a TLM (Tunable Laser Mirror) 220 for reflecting the laser beam, and a FM (Focusing Mirror) for focusing the reflected laser beam; 230, a gas cell 240 generating extreme ultraviolet light through a plasma reaction, and a vacuum chamber accommodating the TLM, FM, and gas cells.
- a laser source 100 for outputting a laser beam
- a TLM (Tunable Laser Mirror) 220 for reflecting the laser beam
- a FM (Focusing Mirror) for focusing the reflected laser beam
- 230 a gas cell 240 generating extreme ultraviolet light through a plasma reaction
- a vacuum chamber accommodating the TLM, FM, and gas cells.
- the laser source 100 is a source source for outputting a laser having an arbitrary wavelength.
- the laser source 100 generates extreme ultraviolet rays having a wavelength of 20 nm or less through plasma induction of the laser output from the laser source.
- a femto sencond class laser source using a titanium sapphire amplified laser system in detail as a specification the characteristics of the pulse width of the IR femtosecond pulse laser (30s ⁇ 50fs, IR wave) It is desirable to have a condition of 800 nm to 1600 nm.
- the TLM is a mirror that reflects a laser beam output from a laser source located outside the vacuum chamber.
- the TLM reflects a laser beam disposed on an incident path output from the laser source to a focusing mirror 230 to be described later.
- the turnable laser mirror (it is ambiguous whether it is correct to denote TLM 1 or 2) is reflected so that the angle reflected by the focusing mirror has an angle of incidence of approximately 2 °, that is, the incident angle incident from the focusing mirror is approximately 2 degrees. Reflect to have °.
- the FM 230 focuses and reflects the incident light for extreme ultraviolet light generation.
- the laser beam output from the laser source is reflected by the TLM mirror and reflected by the focusing mirror, and the focusing mirror FM focuses the incident laser beam into a gas cell that generates EUV light through plasma induction.
- the gas cell is made of a transparent material, preferably made of quartz, a through path through which a laser can pass is formed, and in the center thereof, a plasma induction furnace 330 which is a focal region where a laser output from a laser source is focused. ), An exhaust path 320 is formed at both sides of the plasma induction furnace, and a gas supply path 310 for supplying gas to the plasma induction furnace is connected to the plasma induction furnace.
- the gas cell 240 is formed of a transparent material, and a light induction path is formed at both sides, and a plasma induction path is formed at the center to connect the light induction paths.
- the light reflected by the focusing mirror is focused to be focused on the center portion of the plasma induction furnace and reacts with the reaction gas supplied to the plasma induction furnace to generate EUV light. That is, the plasma induction furnace corresponding to the central portion is focused by focusing the laser output from the laser source, and the external gas supply unit 290 supplies Ne gas through the plasma induction furnace and through the gas supply passage.
- exhaust paths are provided on both sides of the plasma induction furnace to exhaust the supplied gas to the outside and maintain the degree of vacuum in the plasma induction furnace.
- the gas supplied through the gas supply path is diffused outside the region where the laser focus is focused, smooth plasma induction may not be possible due to the scattering of gas particles.
- this exhaust gas may also be an obstacle to EUV light generation. Maintain gas evacuation and vacuum through the furnace.
- the exhaust passage exhausts through an external drain pump 291 (a device for evacuating gas).
- a vacuum chamber is configured to receive a component for generating extreme ultraviolet light in a vacuum state.
- the vacuum chamber is divided into a first vacuum chamber 200 region and a second vacuum chamber 210 region.
- the first vacuum chamber part 200 is an area in which extreme ultraviolet rays are generated
- the second vacuum chamber part 210 corresponds to an area for stably supplying extreme ultraviolet rays generated in the first vacuum chamber part.
- the plasma is induced by the laser beam and the gas supplied from the outside to generate the extreme ultraviolet rays, the extreme ultraviolet rays are generated through the gas cell to be described later.
- a gas such as Ne, Xe, He, etc. is supplied into the gas cell from the outside, it is difficult to maintain a constant vacuum degree, and thus, in the chamber where the gas cell is located, EUV light efficiency generated in the gas cell may be reduced. Therefore, the gas cell is located in the first vacuum chamber portion which maintains a constant vacuum degree, and EUV light generated in the gas cell is transferred directly to the second vacuum chamber portion having a lower vacuum degree to prevent the efficiency from falling.
- the first vacuum chamber part and the second vacuum chamber part are configured with a first vacuum pump 300 and a second vacuum pump 310 to maintain different vacuum degrees, respectively, and to form a lower vacuum degree in the second vacuum chamber.
- a plurality of vacuum pumps suitable for this can be installed.
- it consists of Medium Vacuum class vacuum pumps such as Cryo pump, Diffusion Pump, Turbo Pump and Ion pump.
- Vacuum chambers each portion is preferably first the 10 -3 torr or less, a second vacuum chamber maintained in a vacuum chamber to a vacuum degree of less than 10 -6 torr.
- the first vacuum chamber is configured to generate extreme ultraviolet light
- the second vacuum chamber is configured to prevent deterioration of efficiency so that the final light is supplied to the application.
- the divided vacuum chamber is divided by forming a partition in one chamber, the partition is provided with an optical lens that can transmit the extreme ultraviolet rays generated in the gas cell.
- the extreme ultraviolet generator according to the present invention includes a first aperture 250 additionally applied for beam alignment, and a second aperture 260 passing only light having a central wavelength to prevent damage to an optical component. It further includes.
- the first aperture is used to align the laser beam.
- the first aperture is installed to guide the direction of the beam and is removed from the generator when the alignment is completed.
- the second aperture 260 When the second aperture 260 generates plasma in a vacuum state and an EUV beam is generated, when a plasma is generated, a beam of relatively high energy in various wavelength bands is simultaneously generated in addition to the EUV beam so as not to release the second aperture. It can cause damage to several rear-side optical components, allowing only the beam of the center wavelength to pass through the center of the aperture and blocking other beams.
- a beam splitter 270 is installed on the optical path reflected from the TLM for wave front detection of the light output through the laser source and reflects a predetermined amount of incident light.
- the image sensor 280 is installed in the configuration to detect the wavefront of the incident light.
- FIG. 3 is a detailed view of an apparatus for generating extreme ultraviolet rays using plasma according to the present invention.
- a gas supply path is formed to communicate with the outside to supply gas to the plasma induction path, and a gas exhaust path communicating with the light induction path is provided at both sides of the gas supply path. Formed. Therefore, the gas supply path is connected to the external gas supply unit 290 to supply the reaction gas required for the plasma reaction, and the gas exhaust path is connected to the external drain pump 291 to exhaust the gas after the reaction to the outside. .
- the present invention proposes a gas cell as a module for optimizing the output light and the plasma reaction induction for extreme ultraviolet light generation.
- the plasma induction gas cell has a length-shaped body 1000 having a predetermined length, light induction paths 1100 respectively formed at both sides along a length direction of the body, and a plasma induction path positioned between the light induction paths. 1200, a gas injection path 1300 provided to communicate with the plasma induction furnace and supplying a plasma reaction gas supplied from the outside, and in communication with the light induction furnace, the gas present in the plasma induction furnace to the outside It is characterized by including a gas exhaust path 1400 for exhausting.
- the gas cell for generating the extreme ultraviolet light is a component having a predetermined size body, and is composed of a chamber, a light source, a plurality of optical systems, and a gas cell constituting the extreme ultraviolet light generating device. It is configured to provide a gas cell for generating extreme ultraviolet light through a gas reaction.
- FIG. 5 is a perspective view of a plasma induction gas cell according to the present invention.
- the gas cell has a body 1000 of a predetermined size having a length shape, and light guide paths 1100 through which light can penetrate along the longitudinal direction of the body are located at both sides with respect to the center of the body, respectively.
- a plasma induction furnace 1200 is provided between the light induction furnaces to generate extreme ultraviolet rays through a plasma reaction. That is, holes through which the light penetrates in the order of light induction path, plasma induction path, and light induction path are formed to penetrate the body, and extreme ultraviolet light is generated in the plasma induction path.
- the body is preferably made of quartz or fused silica, but is not necessarily limited thereto, and may be used as a glass material.
- FIG. 6 is a cutaway perspective view of a plasma induction gas cell according to the present invention.
- the plasma induction furnace 1200 has a gas injection path 1300 communicating with the induction path so as to receive the gas supplied from the outside, and each of the light induction paths 1100 configured at both sides is provided with gas.
- Gas exhaust passages 1400 for exhausting to the outside are respectively formed. That is, the laser beam passing through the gas cell reacts with the gas supplied from the plasma induction furnace to generate the extreme ultraviolet light of 20 nm or less.
- the source laser beam supplied from the outside to generate the extreme ultraviolet light is an IR laser of 800 nm class, and the source laser may be an IR laser of 800 nm or more.
- an IR laser is used, but a pulse width laser of Femto second is used. That is, an IR femtosecond laser should be used, and a pulse width of 50 femto second laser is preferable.
- reaction gas for the plasma reaction injected into the gas injection passage is configured to be exhausted in connection with an external exhaust device through the gas exhaust passage. Therefore, the gas exhaust passage is designed to be as close as possible to the gas plasma induction passage so that the gas after the reaction can be discharged quickly.
- the cross-sectional area of the body does not exceed 20 ⁇ 20 mm. This is to determine the size of the cross-sectional area in order to fabricate so as not to interfere with the reflection angle of the optical path in the extreme ultraviolet light generator.
- the plasma induction furnace 1200 has a smaller width B than the light induction furnace.
- the plasma induction furnace is preferably provided with 1 mm or less to increase the gas density for smooth reaction conditions.
- the length of the plasma induction path is preferably configured to be smaller than the width of the gas injection path (C), the width (A) of the plasma induction path should be formed smaller than the width (C) of the gas injection path.
- the gas cell further includes a side cap 150 to cover the light guide path opened to the body side.
- the side cap is for covering the light guide path as a whole, the center is provided with a hole 1600 through which incident light can pass, and the hole 1600 is preferably formed smaller than the width of the light guide path. .
- the side cap is manufactured separately to be fixed to the side of the gas cell, by lowering the pressure in the light guide path through the side cap, to achieve a more smooth exhaust.
- FIG 8 is a view showing the light transmission of the plasma induction gas cell according to the present invention.
- the laser light b is incident from the outside through the one side of the light guide path
- the light incident from the plasma guide path is focused and the reaction gas supplied to the plasma guide path.
- the extreme ultraviolet light is generated and emitted through the plasma reaction.
- FIG. 9 is a cross-sectional view showing a plasma induction gas cell in another embodiment according to the present invention.
- the exhaust efficiency can be improved by designing the both-side exhaust structure in the one-side exhaust structure composed of only the lower side mentioned above. It can be improved.
- the exhaust passage may be one-sided or both-sided, and the gas exhaust passage may be formed as close as possible to the plasma induction passage so as to quickly exhaust the gas remaining in the plasma induction passage.
- FIG. 10 is a top view showing a state in which a plasma induction gas cell is fixed through a bracket
- FIG. 11 is a perspective view of a plasma induction gas cell fixing bracket according to the present invention.
- the gas cell according to the present invention is installed in a vacuum chamber constituting the extreme ultraviolet light generating apparatus, and is installed through a separate fixing bracket 2000 in order to install the gas cell in the vacuum chamber, wherein the fixing bracket vacuums the gas cell.
- the observation window 2100 is provided at a position corresponding to the plasma induction furnace so that the manager can observe the plasma induction furnace while being fixed in the chamber.
- a viewer window is provided at a position corresponding to the fixing bracket on the vacuum chamber, so that the focused light and the plasma generation form can be observed when the laser beam is aligned in the plasma induction furnace.
- the fixing bracket may be designed in various forms. First, an open part through which light may be incident in the light guide path should be provided, and if the structure is open to a position corresponding to the plasma guide path, the viewer window is opened to the outside. It may be in any form, and in one embodiment, the fixing bracket 2000 is composed of an upper / lower bracket, and a space part for fixing the gas cell is provided therein, and the fixing bracket 2000 may be proposed as a structure for fixing the gas cell.
- the present invention configured as described above has an advantage in that the optical system is very simplified in the process of generating extreme ultraviolet rays from a laser beam output from an externally located laser source, so that light alignment is easy and cost reduction can be realized.
Abstract
Description
Claims (15)
- 레이저를 출력하는 레이저 소스;상기 레이저 소스에서 출력되는 레이저 빔을 반사시키는 TLM(Tunable Laser Mirror);상기 TLM에서 반사되는 레이저 빔을 포커싱하는 FM(Focusing Mirror);상기 FM에서 포커싱되는 레이저를 입사받아 초점이 맺혀지는 구간에 해당하는 플라즈마 유도로에 대해 가스 공급로로부터 반응 가스를 공급받아 레이저 빔과 반응 가스에 의해 플라즈마를 형성하여 극자외선을 발생시키는 가스셀; 및상기 TLM, FM, 가스셀을 진공상태로 수용하는 진공챔버;를 포함하여 구성되는 플라즈마를 이용한 극자외선 발생장치.
- 제 1항에 있어서,상기 FM에서 포커싱되는 레이저 빔의 정렬을 위해 구비되는 제 1어퍼쳐와, 상기 가스셀에서 발생한 극자외선 빔에서 중심파장만 투과시키기 위한 제 2어퍼쳐를 포함하여 구성되는 플라즈마를 이용한 극자외선 발생장치.
- 제 2항에 있어서, 상기 진공챔버는,제 1진공챔버부와 제 2진공챔버부로 분할 구성되고, 상기 제 2진공챔버부가 제 1진공챔버부보다 고진공도를 유지하며, 상기 제 1진공챔버부는, TLM, FM, 가스셀, 제 1어퍼쳐를 수용하고,상기 제 2진공챔버부는 상기 제 2어퍼쳐를 수용하도록 구성되는 플라즈마를 이용한 극자외선 발생장치.
- 제 1항에 있어서,상기 TLM에서 반사되는 광의 일부 반사시키는 빔스플리터;와,상기 빔스플리터를 통해 반사되는 빔의 웨이브 프론터(wave front)를 검출하는 이미지 센서;를 포함하는 플라즈마를 이용한 극자외선 발생장치.
- 제 1항에 있어서, 상기 레이저 소스는,IR wave length 800nm ~ 1600nm, pulse width 30fs ~ 50fs를 갖는 플라즈마를 이용한 극자외선 발생장치.
- 제 2항에 있어서, 상기 제 1어퍼쳐는,상기 FM에서 출력되는 빔을 정렬 시킨 후 제거 가능한 것을 특징으로 하는 플라즈마를 이용한 극자외선 발생장치.
- 소정의 길이를 갖는 길이 형상의 몸체;상기 몸체의 길이방향을 따라 양측에 각각 형성되는 광 유도로;상기 광 유도로 사이를 위치하는 플라즈마 유도로;상기 플라즈마 유도로와 연통하도록 구비되며, 외부에서 공급되는 플라즈마 반응 가스를 공급하는 가스 주입로; 및상기 광 유도로와 연통되며, 상기 플라즈마 유도로에 존재하는 가스를 외부로 배기시키는 가스 배기로;를 포함하여 구성되는 플라즈마를 이용한 극자외선 발생장치.
- 제 1항에 있어서, 상기 몸체는,각각의 상기 광 유도로 개방측을 커버링 하며, 광이 통과할 수 있는 홀이 형성된 측면 캡;을 더 포함하는 플라즈마를 이용한 극자외선 발생장치.
- 제 2항에 있어서, 상기 측면 캡은,metal, SUS, aluminum, copper를 포함하는 금속재 또는 quartz, fused silica를 포함하는 유리 재질로 구성되는 플라즈마를 이용한 극자외선 발생장치.
- 제 1항에 있어서, 상기 몸체는,단면적이 20 × 20mm 이하의 크기를 갖도록 구성되는 플라즈마를 이용한 극자외선 발생장치.
- 제 1항에 있어서, 상기 플라즈마 유도로는,폭이 0.9 ~ 1.1mm 크기를 갖도록 구성되는 플라즈마를 이용한 극자외선 발생장치.
- 제 1항에 있어서,상기 광 유도로의 폭은 플라즈마 유도로의 폭보다 큰 것을 특징으로 하는 플라즈마를 이용한 극자외선 발생장치.
- 제 2항에 있어서, 상기 홀은,상기 광 유도로 보다 작게 형성되는 것을 특징으로 하는 플라즈마를 이용한 극자외선 발생장치.
- 제 1항에 있어서, 상기 가스 배기로는,적어도 3개 이상 구성되는 것을 특징으로 하는 플라즈마를 이용한 극자외선 발생장치.
- 제 1항에 있어서, 상기 몸체는,quartz, fused silica 중 어느 하나로 구성되는 것을 특징으로 하는 극자외선 광 생성을 위한 플라즈마 유도 가스셀.
Priority Applications (1)
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US14/386,003 US20150097107A1 (en) | 2012-03-20 | 2013-03-19 | Apparatus for generating extreme ultraviolet light using plasma |
Applications Claiming Priority (5)
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KR10-2012-0025462 | 2012-03-13 | ||
KR10-2012-0028463 | 2012-03-20 | ||
KR1020120028463A KR101269115B1 (ko) | 2012-03-20 | 2012-03-20 | 구조가 간소화된 플라즈마를 이용한 극자외선 발생장치 |
KR1020120028462A KR101416267B1 (ko) | 2012-03-20 | 2012-03-20 | 극자외선 광 생성을 위한 플라즈마 유도 가스셀 |
KR10-2012-0028462 | 2012-03-20 |
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WO2013141578A1 true WO2013141578A1 (ko) | 2013-09-26 |
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PCT/KR2013/002249 WO2013141578A1 (ko) | 2012-03-20 | 2013-03-19 | 플라즈마를 이용한 극자외선 발생장치 |
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US (1) | US20150097107A1 (ko) |
WO (1) | WO2013141578A1 (ko) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10492284B2 (en) | 2018-02-01 | 2019-11-26 | Samsung Electronics Co., Ltd. | EUV generating device |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
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KR101542333B1 (ko) * | 2014-12-26 | 2015-08-05 | 한국과학기술연구원 | 다중 가스셀 모듈을 이용한 극자외선 빔 생성장치 |
KR102555241B1 (ko) | 2018-08-08 | 2023-07-13 | 삼성전자주식회사 | 극자외선 생성 장치 |
HU231453B1 (hu) * | 2019-06-30 | 2023-12-28 | ELI-HU Nonprofit Kft. | Gázcella magasrendű felharmonikusok keltésére, ilyen gázcellát tartalmazó gázcella-összeállítás, továbbá készlet és eljárás a gázcella-összeállítás összeszerelésére |
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US10492284B2 (en) | 2018-02-01 | 2019-11-26 | Samsung Electronics Co., Ltd. | EUV generating device |
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