JPWO2015174388A1 - 深紫外レーザ発生装置および光源装置 - Google Patents
深紫外レーザ発生装置および光源装置 Download PDFInfo
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- G—PHYSICS
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- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/35—Non-linear optics
- G02F1/37—Non-linear optics for second-harmonic generation
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- G—PHYSICS
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- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/35—Non-linear optics
- G02F1/353—Frequency conversion, i.e. wherein a light beam is generated with frequency components different from those of the incident light beams
- G02F1/3534—Three-wave interaction, e.g. sum-difference frequency generation
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- 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
- H01S3/0092—Nonlinear frequency conversion, e.g. second harmonic generation [SHG] or sum- or difference-frequency generation outside the laser cavity
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- H—ELECTRICITY
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- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
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- 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
- H01S3/10084—Frequency control by seeding
- H01S3/10092—Coherent seed, e.g. injection locking
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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
- H01S3/106—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity
- H01S3/108—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity using non-linear optical devices, e.g. exhibiting Brillouin or Raman scattering
- H01S3/109—Frequency multiplication, e.g. harmonic generation
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- H—ELECTRICITY
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- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
- H01S3/16—Solid materials
- H01S3/1601—Solid materials characterised by an active (lasing) ion
- H01S3/1603—Solid materials characterised by an active (lasing) ion rare earth
- H01S3/1608—Solid materials characterised by an active (lasing) ion rare earth erbium
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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
- H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
- H01S3/16—Solid materials
- H01S3/1601—Solid materials characterised by an active (lasing) ion
- H01S3/1603—Solid materials characterised by an active (lasing) ion rare earth
- H01S3/1616—Solid materials characterised by an active (lasing) ion rare earth thulium
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- H—ELECTRICITY
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- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/23—Arrangements of two or more lasers not provided for in groups H01S3/02 - H01S3/22, e.g. tandem arrangements of separate active media
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/35—Non-linear optics
- G02F1/3501—Constructional details or arrangements of non-linear optical devices, e.g. shape of non-linear crystals
- G02F1/3507—Arrangements comprising two or more nonlinear optical devices
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- H—ELECTRICITY
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- 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
- H01S3/106—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity
- H01S3/1062—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity using a controlled passive interferometer, e.g. a Fabry-Perot etalon
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- H—ELECTRICITY
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- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
- H01S3/16—Solid materials
- H01S3/163—Solid materials characterised by a crystal matrix
- H01S3/1671—Solid materials characterised by a crystal matrix vanadate, niobate, tantalate
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- Nonlinear Science (AREA)
- Engineering & Computer Science (AREA)
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- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
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Abstract
Description
1/λ3=1/λ1+1/λ2
λ4=λ3/2
λ5=λ4/2
の関係を満たす。上記関係からただちに、
4/λ5=1/λ1+1/λ2
の関係が導かれる。ただし上記各関係式において、λ1およびλ2は、それぞれ、第1レーザ光源100が生成する第1波長の光11および第2レーザ光源200が生成する第2波長の光21の波長であり、それぞれ1.91μm近辺および1.54μm近辺の値をもつ。λ3およびλ4は、それぞれ、波長852nm近辺(第3波長)の近赤外光31の波長、および波長426nm近辺(第4波長)の青色光41の波長である。そして、λ5は出力される波長213nm近辺(第5波長)の深紫外光51の波長である。
100 第1レーザ光源
11、12 第1波長の光
13 反射光
101 シードレーザ光源
101A 固体レーザ光源
101B ファイバレーザ光源
102 注入同期型レーザまたはツリウム添加ファイバ増幅器
103 シードレーザ出力
105 励起光源
106 励起光
107 励起光学系
108 共振器ミラー
109 レーザ利得媒質
110 複屈折フィルタ
111 エタロン
112 出力結合鏡
120 半導体励起レーザ光源
121 高反射ファイバブラッググレーティング(HR−FBG)
122 レーザ利得ファイバ
123 出力結合ファイバブラッググレーティング(出力結合FBG)
124 出力ファイバ
200 第2レーザ光源
21、22 第2波長の光
23 反射光
300、300A、300B 第1の波長変換ユニット
3 第1の非線形波長変換素子
30 外部共振器
31、32 第3波長の近赤外光
33 反射光
301 入力結合鏡
302、303、304 反射鏡
305 精密位置決め装置
306 分散位相補償素子
400 第2の波長変換ユニット
4 第2の非線形波長変換素子
40 外部共振器
41、42 第4波長の青色光
43 反射光
401 入力結合鏡
402、403、404 反射鏡
405 精密位置決め装置
500 第3の波長変換ユニット
5 第3の非線形波長変換素子
50 外部共振器
51 第5波長の深紫外光
501 入力結合鏡
502、503、504 反射鏡
505 精密位置決め装置
Claims (12)
- 波長1.87〜2.1μmのいずれかである第1波長の光を放ち、ツリウム添加レーザ光源またはツリウム添加ファイバ光源である第1レーザ光源と、
波長1.53〜1.57μmのいずれかである第2波長の光を放ち、半導体レーザ光源、エルビウム添加ファイバ光源、またはエルビウム/イッテルビウム添加ファイバ光源である第2レーザ光源と、
前記第1波長の光および前記第2波長の光から、和周波混合過程によって波長841〜899nmのいずれかの波長の近赤外光を生成する第1の非線形波長変換素子と、
該近赤外光から、第二高調波発生過程によって波長420〜450nmの青色光を生成する第2の非線形波長変換素子と、
該青色光から、第二高調波発生過程によって波長210〜225nmの深紫外光を生成する第3の非線形波長変換素子と
を備えてなる深紫外レーザ発生装置。 - 前記第2レーザ光源は、
前記第2波長の単一周波数レーザ光源と、
該単一周波数レーザ光源の出力を高出力化するためのエルビウム添加ファイバ増幅器またはエルビウム/イッテルビウム添加ファイバ増幅器と
を備えるものである、請求項1に記載の深紫外レーザ発生装置。 - 前記第1レーザ光源がツリウム添加レーザ光源であり、
該ツリウム添加レーザ光源が、単一周波数のレーザ光源により注入同期されたツリウム添加固体レーザ光源である、請求項1に記載の深紫外レーザ発生装置。 - 前記ツリウム添加固体レーザ光源がTm:YVO4、Tm:GdVO4、Tm:GdxY1−xVO4(ただし、0<x<1)、Tm:YAG、Tm:GGG、Tm:LuAGのレーザ光源である、請求項3に記載の深紫外レーザ発生装置。
- 前記第1レーザ光源は、
前記第1波長の単一周波数レーザ光源と、
該単一周波数レーザ光源の出力を高出力化するためのツリウム添加ファイバ増幅器と
を備えるものである、請求項1に記載の深紫外レーザ発生装置。 - 前記第1レーザ光源と前記第2レーザ光源がともに連続波レーザである、請求項1に記載の深紫外レーザ発生装置。
- 前記第1レーザ光源と前記第2レーザ光源とのいずれかまたは両方が単一周波数レーザ光源である、請求項1に記載の深紫外レーザ発生装置。
- 前記和周波混合過程が外部共振器内にて生じるものである、請求項1に記載の深紫外レーザ発生装置。
- 前記和周波混合過程が二波長共振型の和周波混合過程である、請求項8に記載の深紫外レーザ発生装置。
- 前記第2および第3の非線形波長変換素子による二つの前記第二高調波発生過程のうちのいずれかまたは両方が外部共振器内にて生じるものである、請求項1に記載の深紫外レーザ発生装置。
- 前記第1〜第3の非線形波長変換素子のうち少なくともいずれかが、BBO、CLBO、KBBF、RBBF、LBO、KTP、LN、PPLN、PPLT、KN、KTA、RTA、RTPのうちいずれかである、請求項1に記載の深紫外レーザ発生装置。
- 請求項1〜11のいずれか1項に記載の深紫外レーザ発生装置を備える深紫外光レーザ光源装置。
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TWI705244B (zh) * | 2018-07-31 | 2020-09-21 | 由田新技股份有限公司 | 半導體瑕疵檢測設備 |
JP6842725B2 (ja) * | 2019-07-09 | 2021-03-17 | 株式会社金門光波 | レーザー装置およびレーザー発振方法 |
CN110380326B (zh) * | 2019-07-29 | 2020-10-23 | 武汉电信器件有限公司 | 一种光信号输出装置及方法、存储介质 |
CN114185223B (zh) * | 2020-09-15 | 2024-03-26 | 山东大学 | 一种参量光的产生方法及应用 |
EP4300186A1 (en) * | 2021-02-24 | 2024-01-03 | Josho Gakuen Educational Foundation | Ultraviolet laser light generation device |
TW202248732A (zh) * | 2021-02-24 | 2022-12-16 | 梅村信弘 | 波長215~222nm雷射光產生裝置 |
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JPH06265955A (ja) * | 1993-03-15 | 1994-09-22 | Mitsui Petrochem Ind Ltd | 波長変換素子 |
JPH08194240A (ja) * | 1995-01-18 | 1996-07-30 | Sony Corp | レーザ光発生装置 |
JP2002350914A (ja) * | 2001-05-30 | 2002-12-04 | Nikon Corp | 光源装置及び光照射装置 |
JP2006343786A (ja) * | 2006-09-25 | 2006-12-21 | Cyber Laser Kk | 波長変換装置 |
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WO2012128354A1 (ja) * | 2011-03-24 | 2012-09-27 | 株式会社ニコン | 紫外レーザ装置 |
WO2013015940A2 (en) * | 2011-07-22 | 2013-01-31 | Kla-Tencor Corporation | Laser with high quality, stable output beam, and long life high conversion efficiency non-linear crystal |
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US6181461B1 (en) | 1997-10-01 | 2001-01-30 | Sony Corporation | Optical system having stable resonator |
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JP4590578B1 (ja) * | 2010-04-01 | 2010-12-01 | レーザーテック株式会社 | 光源装置、マスク検査装置、及びコヒーレント光発生方法 |
JP2013156448A (ja) * | 2012-01-30 | 2013-08-15 | Nikon Corp | レーザ装置、露光装置及び検査装置 |
-
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- 2015-05-12 US US14/896,190 patent/US9429813B2/en active Active
- 2015-05-12 WO PCT/JP2015/063556 patent/WO2015174388A1/ja active Application Filing
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Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH06265955A (ja) * | 1993-03-15 | 1994-09-22 | Mitsui Petrochem Ind Ltd | 波長変換素子 |
JPH08194240A (ja) * | 1995-01-18 | 1996-07-30 | Sony Corp | レーザ光発生装置 |
JP2002350914A (ja) * | 2001-05-30 | 2002-12-04 | Nikon Corp | 光源装置及び光照射装置 |
JP2007187920A (ja) * | 2006-01-13 | 2007-07-26 | Nippon Telegr & Teleph Corp <Ntt> | 非線形光学媒質およびそれを用いた波長変換装置 |
JP2006343786A (ja) * | 2006-09-25 | 2006-12-21 | Cyber Laser Kk | 波長変換装置 |
WO2012128354A1 (ja) * | 2011-03-24 | 2012-09-27 | 株式会社ニコン | 紫外レーザ装置 |
WO2013015940A2 (en) * | 2011-07-22 | 2013-01-31 | Kla-Tencor Corporation | Laser with high quality, stable output beam, and long life high conversion efficiency non-linear crystal |
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WO2015174388A1 (ja) | 2015-11-19 |
US9429813B2 (en) | 2016-08-30 |
JP6214070B2 (ja) | 2017-10-18 |
US20160116822A1 (en) | 2016-04-28 |
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