JP5615259B2 - マルチパス光パワー増幅器 - Google Patents
マルチパス光パワー増幅器 Download PDFInfo
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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
- H01S3/23—Arrangements of two or more lasers not provided for in groups H01S3/02 - H01S3/22, e.g. tandem arrangements of separate active media
- H01S3/2308—Amplifier arrangements, e.g. MOPA
- H01S3/2325—Multi-pass amplifiers, e.g. regenerative amplifiers
- H01S3/2333—Double-pass amplifiers
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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
- H01S3/2308—Amplifier arrangements, e.g. MOPA
- H01S3/2325—Multi-pass amplifiers, e.g. regenerative amplifiers
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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
- H01S3/005—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
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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
- H01S3/005—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
- H01S3/0064—Anti-reflection devices, e.g. optical isolaters
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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
- H01S3/0602—Crystal lasers or glass lasers
- H01S3/061—Crystal lasers or glass lasers with elliptical or circular cross-section and elongated shape, e.g. rod
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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
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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
- H01S3/162—Solid materials characterised by an active (lasing) ion transition metal
- H01S3/1623—Solid materials characterised by an active (lasing) ion transition metal chromium, e.g. Alexandrite
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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
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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
- H01S3/1673—YVO4 [YVO]
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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
- H01S3/2308—Amplifier arrangements, e.g. MOPA
- H01S3/2316—Cascaded amplifiers
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Description
Claims (12)
- レーザエネルギの偏光に依存する増幅を行い、ビーム歪みが低減されたレーザ出力を生成するマルチパス光パワー増幅器を構成する方法において、
生来的な特異な軸利得及び関連する生来的な特異な熱複屈折によって特徴付けられる、互いに直交するように関係づけられた第1及び第2の利得軸をする異方性利得媒質を準備するステップであって、前記異方性利得媒質がミラーの光反射面と偏光回転子との間に位置している、ステップと、
偏光されたシードレーザビームを誘導して、前記異方性利得媒質を複数回通過させるステップであって、前記複数回の通過のそれぞれのためのシードレーザビームは、共通ビーム経路に沿って伝播し、前記共通ビーム経路から実質的に変位せず、前記異方性利得媒質と前記ミラーの前記光反射面との間で偏光回転が行われず、前記シードレーザビームは、前記共通ビーム経路を横断する偏光方向を有する、ステップと、
前記利得媒質の第1及び第2の利得軸に対して、前記偏光されたシードレーザビームの偏光方向の整列を調整し、ビームスプリッタに前記偏光されたシードレーザビームを複数回通過させて、前記ビームスプリッタから出るレーザ出力ビームを生成することにより、前記利得媒質を通過する偶数回の前記複数回の通過を確定するステップであって、前記複数回の通過のパスは、前記利得媒質の前記第1及び第2の利得軸の1つに沿った2つ以上の連続するパスで始まるか又は終わるような順序で配置されている、ステップとを有し、
前記ビーム経路から実質的に変位しない前記シードレーザビームは、レーザ出力ビーム歪みを低減し、前記複数の通過のパスの前記順序は、前記生来的な特異な熱複屈折を補償して、レーザ出力エネルギー抽出効率を高める、方法。 - 前記異方性利得媒質は、希土類イオンドープ結晶性固体材料を含む請求項1記載の方法。
- 前記希土類イオンドープ結晶性固体材料は、Nd:YVO4、Nd:YLF、Nd:GdVO4、Tm:YLF、Tm:YVO4、Ho:Tm:YLF、Ho:Tm:YVO4、Ho:Tm:GdVO4、Yb:YLF、Yb:YVO4又はYb:GdVO4を含む請求項2記載の方法。
- 前記異方性利得媒質は、Cr:LiSAF、Cr:LiCAF、Ti:サファイア又はアレキサンドライトを含む請求項1記載の方法。
- 前記異方性利得媒質は、断面が円形の筒状ロッドの形状の結晶性固体材料である請求項1記載の方法。
- 前記異方性利得媒質は、断面が多角形状の筒状ロッドの形状の結晶性固体材料である請求項1記載の方法。
- 前記筒状ロッドの多角形状の断面は、正方形である請求項6記載の方法。
- 前記筒状ロッドの多角形状の断面は、六角形である請求項6記載の方法。
- 前記偏光回転子は、ファラデー回転子と、半波長板とを備える、請求項1記載の方法。
- 前記ミラーが第1のミラーであり、前記偏光回転子は第1の偏光回転子であり、前記ビームスプリッタは第1のビームスプリッタであり、
第2のミラーと、
前記第2のミラーに光学的に関連付けられた第2のビームスプリッタと、
前記第1のビームスプリッタと前記第2のビームスプリッタとの間に配置され、4重パス光増幅器を生成するための第2の偏光回転子と、
をさらに備える請求項1記載の方法。 - 前記異方性利得媒質は第1の異方性利得媒質であり、前記偏光回転子は第1の偏光回転子であり、
第2の偏光回転子と、
前記第2の偏光回転子と前記ビームスプリッタに光学的に関連付けられ、4重パス光増幅器を生成するための第2の利得媒質と、
をさらに備える請求項1記載の方法。 - 前記異方性利得媒質は第1の利得媒質であり、前記ミラーは第1のミラーであり、前記偏光回転子は第1の偏光回転子であり、前記ビームスプリッタは第1のビームスプリッタであり、
第2のミラーと、
前記第2のミラーに光学的に関連付けられた第2のビームスプリッタと、
前記第1のビームスプリッタと前記第2のビームスプリッタとの間に配置された第2の偏光回転子と、
前記第2のビームスプリッタと前記第2のミラーとの間に配置され、6重パス光増幅器を生成するための第2の異方性利得媒質と、
をさらに備える請求項1記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/059,955 US7796671B2 (en) | 2008-03-31 | 2008-03-31 | Multi-pass optical power amplifier |
US12/059,955 | 2008-03-31 | ||
PCT/US2009/037719 WO2009145971A1 (en) | 2008-03-31 | 2009-03-19 | Multi-pass optical power amplifier |
Publications (2)
Publication Number | Publication Date |
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JP2011517066A JP2011517066A (ja) | 2011-05-26 |
JP5615259B2 true JP5615259B2 (ja) | 2014-10-29 |
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JP2011501927A Expired - Fee Related JP5615259B2 (ja) | 2008-03-31 | 2009-03-19 | マルチパス光パワー増幅器 |
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US (1) | US7796671B2 (ja) |
JP (1) | JP5615259B2 (ja) |
KR (1) | KR20100135772A (ja) |
CN (1) | CN101981769B (ja) |
TW (1) | TW200952298A (ja) |
WO (1) | WO2009145971A1 (ja) |
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JPH10270781A (ja) * | 1997-03-27 | 1998-10-09 | Sony Corp | レーザ光発生方法及びその装置 |
JP2000077753A (ja) * | 1998-09-01 | 2000-03-14 | Ishikawajima Harima Heavy Ind Co Ltd | 異方性結晶を用いた側面励起型固体レーザ |
US6700698B1 (en) * | 1999-07-06 | 2004-03-02 | Qinetiq Limited | Multi-pass optical amplifier |
US6384966B1 (en) * | 1999-11-03 | 2002-05-07 | Time-Bandwidth Products Ag | Multiple pass optical amplifier with thermal birefringence compensation |
EP1168532A1 (de) * | 2000-06-23 | 2002-01-02 | Universität Bern | Verfahren zur Kompensation thermisch optischer Effekte |
CN1317856A (zh) * | 2001-02-09 | 2001-10-17 | 周寿桓 | 受激耦合谐振腔激光器 |
JP2004253733A (ja) * | 2003-02-21 | 2004-09-09 | Topcon Corp | 半導体レーザ装置及び半導体レーザ装置のレーザ結晶保持方法 |
WO2005069454A1 (ja) * | 2004-01-16 | 2005-07-28 | Mitsubishi Denki Kabushiki Kaisha | 固体レーザ励起モジュール及びレーザ発振器 |
US7386019B2 (en) * | 2005-05-23 | 2008-06-10 | Time-Bandwidth Products Ag | Light pulse generating apparatus and method |
-
2008
- 2008-03-31 US US12/059,955 patent/US7796671B2/en not_active Expired - Fee Related
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2009
- 2009-03-19 CN CN200980111740XA patent/CN101981769B/zh not_active Expired - Fee Related
- 2009-03-19 JP JP2011501927A patent/JP5615259B2/ja not_active Expired - Fee Related
- 2009-03-19 WO PCT/US2009/037719 patent/WO2009145971A1/en active Application Filing
- 2009-03-19 KR KR1020107021925A patent/KR20100135772A/ko not_active Application Discontinuation
- 2009-03-30 TW TW098110389A patent/TW200952298A/zh unknown
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US7796671B2 (en) | 2010-09-14 |
US20090245304A1 (en) | 2009-10-01 |
KR20100135772A (ko) | 2010-12-27 |
CN101981769B (zh) | 2012-08-22 |
JP2011517066A (ja) | 2011-05-26 |
WO2009145971A1 (en) | 2009-12-03 |
TW200952298A (en) | 2009-12-16 |
CN101981769A (zh) | 2011-02-23 |
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