JP6633099B2 - パルス光ビームのスペクトル特徴制御 - Google Patents
パルス光ビームのスペクトル特徴制御 Download PDFInfo
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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
- G03F7/70058—Mask illumination systems
- G03F7/70141—Illumination system adjustment, e.g. adjustments during exposure or alignment during assembly of illumination system
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- H—ELECTRICITY
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- 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
- H01S3/005—Optical devices external to the laser cavity, specially adapted for lasers, e.g. for homogenisation of the beam or for manipulating laser pulses, e.g. pulse shaping
- H01S3/0078—Frequency filtering
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- H—ELECTRICITY
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- 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
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/10007—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating in optical amplifiers
- H01S3/10023—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating in optical amplifiers by functional association of additional optical elements, e.g. filters, gratings, reflectors
- H01S3/1003—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating in optical amplifiers by functional association of additional optical elements, e.g. filters, gratings, reflectors tunable optical elements, e.g. acousto-optic filters, tunable gratings
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/12—Generating the spectrum; Monochromators
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/007—Optical devices or arrangements for the control of light using movable or deformable optical elements the movable or deformable optical element controlling the colour, i.e. a spectral characteristic, of the light
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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
- G03F7/20—Exposure; Apparatus therefor
- G03F7/2002—Exposure; Apparatus therefor with visible light or UV light, through an original having an opaque pattern on a transparent support, e.g. film printing, projection printing; by reflection of visible or UV light from an original such as a printed image
- G03F7/2004—Exposure; Apparatus therefor with visible light or UV light, through an original having an opaque pattern on a transparent support, e.g. film printing, projection printing; by reflection of visible or UV light from an original such as a printed image characterised by the use of a particular light source, e.g. fluorescent lamps or deep UV light
- G03F7/2006—Exposure; Apparatus therefor with visible light or UV light, through an original having an opaque pattern on a transparent support, e.g. film printing, projection printing; by reflection of visible or UV light from an original such as a printed image characterised by the use of a particular light source, e.g. fluorescent lamps or deep UV light using coherent light; using polarised light
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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
-
- 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
- G03F7/70483—Information management; Active and passive control; Testing; Wafer monitoring, e.g. pattern monitoring
- G03F7/7055—Exposure light control in all parts of the microlithographic apparatus, e.g. pulse length control or light interruption
- G03F7/70575—Wavelength control, e.g. control of bandwidth, multiple wavelength, selection of wavelength or matching of optical components to wavelength
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- 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
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/102—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation
- H01S3/104—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation in gas lasers
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- 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
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/11—Mode locking; Q-switching; Other giant-pulse techniques, e.g. cavity dumping
-
- 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
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/11—Mode locking; Q-switching; Other giant-pulse techniques, e.g. cavity dumping
- H01S3/1123—Q-switching
- H01S3/121—Q-switching using intracavity mechanical devices
- H01S3/125—Q-switching using intracavity mechanical devices using rotating prisms
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- 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
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/13—Stabilisation of laser output parameters, e.g. frequency or amplitude
- H01S3/131—Stabilisation of laser output parameters, e.g. frequency or amplitude by controlling the active medium, e.g. by controlling the processes or apparatus for excitation
- H01S3/134—Stabilisation of laser output parameters, e.g. frequency or amplitude by controlling the active medium, e.g. by controlling the processes or apparatus for excitation in gas lasers
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- 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
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Astronomy & Astrophysics (AREA)
- Lasers (AREA)
- Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
Description
本出願は、2015年6月26日出願の「Pulsed Light Beam Spectral Feature Control」と題する米国仮出願第62/185,452号及び2015年7月8日出願の「Pulsed Light Beam Spectral Feature Control」と題する米国出願第14/795,508号の利益を主張するものであり、その全体が参照として本明細書に組み込まれる。
Claims (13)
- 多段ガス放電システムであり、第1の段がパルスシード光ビームを出力する発振器装置であり、第2の段が前記パルスシード光ビームを受け取り、前記パルス光ビームを出力する光増幅装置であり、いずれの段もガス放電サブシステムを含む光源により生成されるパルス光ビームの帯域幅を含むスペクトル特徴を制御するためのシステムであって、
前記光源の第1の段及び第2の段に接続されたタイミングモジュールに結合され、前記第1の段に送信される第1のトリガ信号及び前記第2の段に送信される第2のトリガ信号の間の相対的なタイミングを制御し、前記タイミングモジュールの動作点を下限及び上限の間で変更することによって前記パルス光ビームの前記スペクトル特徴を調整する第1の駆動モジュールと、
前記光源の1つ以上の光学素子に結合され、前記1つ以上の光学素子を動かすことによって前記パルス光ビームの前記スペクトル特徴を調整する第2の駆動モジュールと、
前記第1の駆動モジュール及び前記第2の駆動モジュールに接続された制御システムであって、
前記タイミングモジュールの動作点に関する信号であって、前記動作点が前記下限又は前記上限にある場合は飽和状態にあり、前記上限及び前記下限の間にある場合は不飽和状態にあることを示す信号を受信し、
前記光源の前記タイミングモジュールの前記動作点の前記信号に基づいて、前記上限及び前記下限の間における前記タイミングモジュールの前記動作点の位置を決定し、
前記決定された位置に基づいて、前記タイミングモジュールが前記飽和状態にあるかどうかを判定し、
前記タイミングモジュールが前記飽和状態にあると判定される場合に、前記光源の1つ以上の光学素子を動かして、前記タイミングモジュールを前記不飽和状態に変化させ、前記パルス光ビームの前記スペクトル特徴を調整する、ように構成された制御システムと、
を備えたシステム。 - 前記制御システムは、
前記光源から出力される前記パルス光ビームの前記スペクトル特徴の測定値を受信し、
前記第1の駆動モジュール及び前記第2の駆動モジュールの1つ以上に信号を送信して、前記受信した前記パルス光ビームの前記スペクトル特徴の測定値に基づいて前記パルス光ビームの前記スペクトル特徴を新しい値に調整する、ように構成された、請求項1に記載のシステム。 - 前記1つ以上の光学素子は、前記第1の段に結合されたスペクトル選択モジュールを備える、
請求項1に記載のシステム。 - 前記1つ以上の光学素子は、前記パルス光ビームと相互作用し、かつ、前記パルス光ビームの光学倍率を調整するように構成された、
請求項1に記載のシステム。 - 前記第1の駆動モジュールに接続され、前記パルス光ビームの特性を受信し、前記タイミングモジュールの前記動作点に関する信号を出力するように構成された監視システムを含むメトロロジシステムを更に備えた、請求項1に記載のシステム。
- 前記メトロロジシステムは、前記光源から出力される前記パルス光ビームのスペクトル特徴を測定するように構成されたスペクトル特徴ユニットを含み、前記制御システムは、前記パルス光ビームの前記スペクトル特徴の測定値を受信するように構成される、請求項5に記載のシステム。
- 光源を制御するための方法であって、
前記光源の第1の段及び第2の段に接続されたタイミングモジュールの動作点の信号を受信して、前記第1の段に送信される第1のトリガ信号及び前記第2の段に送信される第2のトリガ信号の間の相対的なタイミングを制御することであって、前記タイミングモジュールの動作点は、下限及び上限の間で変更可能であることによって、前記光源が生成するパルス光ビームの帯域幅を含むスペクトル特徴を調整し、前記タイミングモジュールは、前記動作点が前記下限又は前記上限にある場合は飽和状態にあり、前記上限及び前記下限の間にある場合は不飽和状態にあることを示す信号を受信することと、
前記光源の前記タイミングモジュールの前記動作点の前記信号に基づいて、前記上限及び前記下限の間における前記タイミングモジュールの前記動作点の位置を決定することと、
前記決定された位置に基づいて、前記タイミングモジュールが前記飽和状態にあるかどうかを判定することと、
前記タイミングモジュールが前記飽和状態にあると判定される場合に、前記光源の1つ以上の光学素子を動かして、前記タイミングモジュールを前記不飽和状態に変化させ、前記パルス光ビームの前記スペクトル特徴を調整することと、を含む方法。 - 前記下限及び前記上限の間における前記タイミングモジュールの前記動作点の位置を決定することは、前記上限及び前記下限の間にある起動上限及び起動下限の1つ以上に対する前記動作点の前記位置を決定することを含み、
前記決定された位置に基づいて、前記タイミングモジュールが前記飽和状態にあるかどうかを判定することは、前記動作点が、前記起動上限及び前記上限の間にあるかどうか、又は前記起動下限及び前記下限の間にあるかどうかを判定することを含み、
前記タイミングモジュールの前記不飽和状態は、前記起動上限及び前記起動下限の間にある、請求項7に記載の方法。 - 前記タイミングモジュールが前記飽和状態にある場合は、前記タイミングモジュールの前記動作点が、前記起動上限及び前記起動下限の間にある停止上限及び停止下限の間になるまで前記光源の前記1つ以上の光学素子を動かし続けることを更に含む、請求項8に記載の方法。
- 前記タイミングモジュールは、前記停止上限及び前記停止下限の間にある目標動作点に関連付けられ、前記目標動作点は前記タイミングモジュールが最適な処理を行うことが知られている動作点である、請求項9に記載の方法。
- 前記光源の前記1つ以上の光学素子は、前記光源から射出される前記パルス光ビームと相互作用するように構成された光学素子を含む、請求項7に記載の方法。
- 前記光源の前記1つ以上の光学素子は、前記光学素子が前記パルス光ビームと相互作用していないときにのみ動かされる、請求項11に記載の方法。
- 前記光源の前記1つ以上の光学素子を動かすことは、前記光学素子を前記パルス光ビームの経路に対して動かすことを含む、請求項11に記載の方法。
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201562185452P | 2015-06-26 | 2015-06-26 | |
US62/185,452 | 2015-06-26 | ||
US14/794,508 | 2015-07-08 | ||
US14/794,508 US9785050B2 (en) | 2015-06-26 | 2015-07-08 | Pulsed light beam spectral feature control |
PCT/US2016/037435 WO2016209669A1 (en) | 2015-06-26 | 2016-06-14 | Pulsed light beam spectral feature control |
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JP2018518834A JP2018518834A (ja) | 2018-07-12 |
JP6633099B2 true JP6633099B2 (ja) | 2020-01-22 |
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JP2017559574A Active JP6633099B2 (ja) | 2015-06-26 | 2016-06-14 | パルス光ビームのスペクトル特徴制御 |
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US (2) | US9785050B2 (ja) |
JP (1) | JP6633099B2 (ja) |
KR (2) | KR102161194B1 (ja) |
CN (2) | CN110829168B (ja) |
TW (1) | TWI606311B (ja) |
WO (1) | WO2016209669A1 (ja) |
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Publication number | Priority date | Publication date | Assignee | Title |
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US9785050B2 (en) | 2015-06-26 | 2017-10-10 | Cymer, Llc | Pulsed light beam spectral feature control |
US9989866B2 (en) | 2016-10-17 | 2018-06-05 | Cymer, Llc | Wafer-based light source parameter control |
US9835959B1 (en) | 2016-10-17 | 2017-12-05 | Cymer, Llc | Controlling for wafer stage vibration |
US9997888B2 (en) * | 2016-10-17 | 2018-06-12 | Cymer, Llc | Control of a spectral feature of a pulsed light beam |
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US20160380402A1 (en) | 2016-12-29 |
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US20170160638A1 (en) | 2017-06-08 |
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