JP5555686B2 - 全ファイバ型チャープパルス増幅システム - Google Patents
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- JP5555686B2 JP5555686B2 JP2011284170A JP2011284170A JP5555686B2 JP 5555686 B2 JP5555686 B2 JP 5555686B2 JP 2011284170 A JP2011284170 A JP 2011284170A JP 2011284170 A JP2011284170 A JP 2011284170A JP 5555686 B2 JP5555686 B2 JP 5555686B2
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- H01S3/302—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range using scattering effects, e.g. stimulated Brillouin or Raman effects in an optical fibre
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Description
本出願は、2003年6月30日出願の米国特許出願第10/608,233号の一部継続出願であり、上記出願の全体は本願明細書に組み込まれる。本出願は、2004年1月27日出願の米国特許仮出願第60/539,110号の出願日の恩典を請求するものである。この米国特許仮出願第60/539,110号の開示全体は本願明細書に組み込まれる。
Claims (21)
- シード光源と、
前記シード光源から出力されたパルスを時間的に伸張するパルスストレッチャーと、
前記伸張されたパルスを、非対称のパルス形状を有するキュービコンパルスを形成するように増幅する非線形増幅器と、
前記増幅されたパルスを圧縮するパルスコンプレッサと、
を備え、
前記パルスストレッチャーにより前記伸張されたパルスは、前記増幅器内で、0.3〜10πの範囲内のレベルの自己位相変調を受け、前記自己位相変調が3次分散を生成し、該3次分散が前記パルスストレッチャー及び前記パルスコンプレッサの3次分散によって少なくとも部分的に補償されることを特徴とするファイバチャープパルス増幅システム。
- 前記シード光源が、サブ10ピコ秒パルスを出力するシード光源であることを特徴とする請求項1に記載のファイバチャープパルス増幅システム。
- 前記パルスストレッチャーが、 前記シード光源から出力された前記パルスを時間的に10倍以上に伸張することを特徴とする請求項1又は2に記載のファイバチャープパルス増幅システム。
- 前記増幅器は、出力パルススペクトルがその入力パルススペクトルに対して波長シフトされるように構成された少なくとも1つの非線形ファイバ増幅器であることを特徴とする請求項1〜3のいずれか1項に記載のファイバチャープパルス増幅システム。
- 前記増幅器は、前記パルスストレッチャー及び前記パルスコンプレッサからの前記3次分散によって少なくとも部分的に補償される非線形パルスチャープを生成するように、前記増幅キュービコンパルスを出力する請求項1〜4のいずれか1項に記載のファイバチャープパルス増幅システム。
- 前記増幅器は、前記出力パルススペクトルが前記入力パルススペクトルに対して利得狭窄されるように構成されていることを特徴とする請求項1〜5のいずれか1項に記載のファイバチャープパルス増幅システム。
- 前記自己位相変調は、前記入力パルススペクトルに比し、出力パルススペクトルの振幅変調の増加を示すことを特徴とする請求項1〜5のいずれか1項に記載のファイバチャープパルス増幅器。
- ファイバ増幅器内に自己位相変調が存在する状態で、ファイバチャープパルス増幅システムから高品質パルスを生成する方法であって、
シード光源から出力されたパルスを、パルスストレッチャーにより時間的に伸張し、
伸張された前記パルスを、非対称のパルス形状をなすキュービコンパルスを形成するように、非線形増幅器で増幅し、
増幅された前記パルスを、パルスコンプレッサで圧縮することを含み、
前記増幅器内で、前記伸張されたパルスは0.3〜10πの範囲内のレベルの自己位相変調を受け、前記自己位相変調は、前記パルスストレッチャー及び前記パルスコンプレッサの3次分散によって少なくとも部分的に補償される3次分散を生成することを特徴とする方法。
- 前記増幅器内に実質的な利得狭窄が生じるように、入力パルススペクトルを有した前記伸張されたパルスを選択して前記増幅器内へ入力することを含み、
前記利得狭窄が、前記入力パルススペクトルよりも狭いスペクトル幅を有する増幅したパルススペクトルを生成し、
前記圧縮されたパルスの品質を、前記自己位相変調によって向上させることを特徴とする請求項8に記載の方法。
- 前記選択が、更に前記増幅器内に実質的な利得プリングを生じさせるように、前記入力パルススペクトルを有し伸張されたパルスを、選択して前記増幅器内へ入力し、
前記利得プリングが、前記パルススペクトルの平均光周波数の実質的なスペクトルシフトを生成することを特徴とする請求項9に記載の方法。
- 前記出力パルス品質はパルスエネルギーの増加と共に向上し、
前記パルスエネルギーの増加はさらに、前記ファイバチャープパルス増幅システム内に0.3〜10πレベルの自己位相変調を生じさせることを特徴とする請求項9又は10に記載の方法。
- 前記入力パルススペクトルが、シード光源及び、前記シード光源と前記ファイバ増幅器の間に挿入された光フィルタによって調整されることを更に含み、
前記自己位相変調によって前記圧縮パルスの品質が増加するように、前記シード光源の光帯域幅及び中心波長と、前記フィルタの伝送帯域幅及び中心波長とを選択することを特徴とする請求項9〜11のいずれか1項に記載の方法。
- 前記増幅器は、非線形のドープされていないファイバと線形増幅器であることを特徴とする請求項1〜7のいずれか1項に記載のファイバチャープパルス増幅システム。
- 前記増幅器は、大きな自己位相変調領域にて動作可能で、入力部において前記伸張したパルスを受信し、出力スペクトル内で増幅リプルの増加を有しつつパルス品質が向上するパルス出力を生成するパワー増幅器であることを特徴とする請求項1〜7のいずれか1項に記載のファイバチャープパルス増幅システム。
- 前記増幅器は、大きな自己位相変調領域にて動作可能で、入力部にて前記伸張されたパルスを受信し、前記システム内のパルスエネルギーと共に、パルス品質が向上し、その高次の分散が変化するパルス出力を生成するパワー増幅器であることを特徴とする請求項1〜7のいずれか1項に記載のファイバチャープパルス増幅システム。
- 前記増幅器内での、非対称なパルス増幅成形と、その後の前記自己位相変調とによって、パルスエネルギー又は励起エネルギーの増加と共に、パルス品質が向上した圧縮出力パルスが得られることを特徴とする請求項1〜7のいずれか1項に記載のファイバチャープパルス増幅システム。
- 前記シード光源はバルク型固体モードロックレーザであることを特徴とする請求項1〜7及び13〜16のいずれか1項に記載のファイバチャープパルス増幅システム。
- 前記シード光源はファイバモードロックレーザであることを特徴とする請求項1〜7及び13〜16のいずれか1項に記載のファイバチャープパルス増幅システム。
- 前記増幅器は、前記出力パルススペクトルが前記入力パルススペクトルに対して利得プリングが生じるように増幅することを特徴とする請求項4に記載のファイバチャープパルス増幅システム。
- 前記増幅器は、非対称パルススペクトル及びパルススペクトル内のリプルの少なくともいずれかを生成することを特徴とする請求項1〜7及び13〜16のいずれか1項に記載のファイバチャープパルス増幅システム。
- シード光源と、
前記シード光源から出力されたパルスを時間的に伸張するパルスストレッチャーと、
非線形増幅器内の自己位相変調により、非対称パルス形状を有するキュービコンパルスを形成して、パルス品質向上を実現するパルス増幅器としての非線形増幅器であって、前記パルス品質向上は、励起電力又はパルスエネルギーの増大と共にパルスウイングが減少することを含む非線形増幅器と、
パルスコンプレッサと、
を備え、
前記非線形増幅器内で前記伸張されたパルスは0.3〜10πの範囲内のレベルの自己位相変調を受け、前記自己位相変調のレベルは、前記パルスストレッチャー及び前記パルスコンプレッサの3次分散によって少なくとも部分的に補償される3次分散を生成することを特徴とするファイバチャープパルス増幅システム。
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Application Number | Priority Date | Filing Date | Title |
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US10/992,762 US7414780B2 (en) | 2003-06-30 | 2004-11-22 | All-fiber chirped pulse amplification systems |
US10/992,762 | 2004-11-22 |
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JP2007536674A Division JP2008517460A (ja) | 2004-11-22 | 2005-03-14 | 全ファイバ型チャープパルス増幅システム |
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JP2012103716A JP2012103716A (ja) | 2012-05-31 |
JP2012103716A5 JP2012103716A5 (ja) | 2014-02-27 |
JP5555686B2 true JP5555686B2 (ja) | 2014-07-23 |
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US20150255942A1 (en) | 2015-09-10 |
US8503069B2 (en) | 2013-08-06 |
US20100302627A1 (en) | 2010-12-02 |
US7414780B2 (en) | 2008-08-19 |
US20080273238A1 (en) | 2008-11-06 |
US8228597B2 (en) | 2012-07-24 |
KR20070083562A (ko) | 2007-08-24 |
US20130293947A1 (en) | 2013-11-07 |
JP2008517460A (ja) | 2008-05-22 |
EP1815281A2 (en) | 2007-08-08 |
WO2006057655A8 (en) | 2007-08-23 |
CN100578269C (zh) | 2010-01-06 |
US9042004B2 (en) | 2015-05-26 |
KR20090016018A (ko) | 2009-02-12 |
WO2006057655A2 (en) | 2006-06-01 |
KR100895917B1 (ko) | 2009-05-07 |
WO2006057655A3 (en) | 2007-04-26 |
EP1815281B1 (en) | 2019-02-27 |
EP1815281A4 (en) | 2009-05-06 |
US20050105865A1 (en) | 2005-05-19 |
US10096962B2 (en) | 2018-10-09 |
CN101076748A (zh) | 2007-11-21 |
JP2012103716A (ja) | 2012-05-31 |
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