JP2012137796A - インライン、高エネルギファイバチャープパルス増幅システム - Google Patents
インライン、高エネルギファイバチャープパルス増幅システム Download PDFInfo
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- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
- H01S3/094003—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light the pumped medium being a fibre
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- 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
- H01S3/10015—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating in optical amplifiers by monitoring or controlling, e.g. attenuating, the input signal
Abstract
【解決手段】 短光パルスを発生する種パルス光源、パルスを伸長する伸長器、及び複数の鎖状につながった偏光を保持しているファイバ区分とからなり、その偏光保持ファイバの少なくとも1つは増幅器であるチャープパルス増幅システムにより、課題が達成される。
【選択図】 図2
Description
E=Φnlmaxτst/γeffLeff
と表され、ここで、Φnlmaxはファイバ増幅器内での最大許容非線形位相遅れ(自己位相変調で誘導される)であり、τstは伸長されたパルスのFWHM幅であり、γeffはファイバの有効非線形パラメータ、Leffは最終ファイバパワー増幅器の有効長である。モード径30μmの大きなモードファイバ(米国特許No.5,818,630で議論された回折限界マルチモードファイバで通常得られる)の場合、γeffは波長1550nmでγeff=2×10−4/mWと計算される。高Erドープシリカファイバは、0.5mより短い有効増幅長を可能にする。さらに、導波型増幅器の場合、大きなパルス歪みなしでΦnlmax〜10が許容される。したがって、τst=4nsの伸長されたパルス幅の場合、400μJより大きなパルスエネルギをもつサブ−ピコ秒パルス出力がこのシステムの大きなモードファイバで安全に発生される。
Claims (14)
- チャープパルス増幅システムであって、
受動的にモードロックされたファイバ発振器を含む、短光入力パルスの光源と、
該短光入力パルスの光源から複数の該短光入力パルスを受信し、100psより長い伸長パルスを生成する非線形チャープファイバブラッグ格子パルス伸長器システムと、
該チャープファイバブラッグ格子パルス伸長器システムに後続して接続された少なくとも1つの増幅器と、及び
該増幅器からの該伸長パルスを圧縮して、1nmより大きいバンド幅と1psより小さいパルス幅を有する圧縮パルスを生成するパルス圧縮器とからなり、
該チャープファイバブラッグ格子パルス伸長器システムは10psより小さい群遅延リップルを有する伸長パルスを生成しているものであるチャープパルス増幅システム。 - 前記チャープファイバブラッグ格子パルス伸長器システムが300psより長い伸長パルスを生成している、請求項1に記載のチャープパルス増幅システム。
- 前記少なくとも1つの増幅器は、バルク増幅器、ファイバ増幅器、ダイオードレーザ増幅器、パラメトリック増幅器、ラマン増幅器、の一つ或いはそれらの組み合わせを含む請求項1の規定に従うチャープパルス増幅システム。
- 前記ファイバブラッグ格子パルス伸長器システムは、複数の直列接続されたファイバブラッグ格子伸長器を含む請求項1に記載のチャープパルス増幅システム。
- 最適に圧縮されたパルスは前記パルス圧縮器の下流のターゲットで得られ、前記パルス圧縮器と前記ターゲットの間の光ビーム通路は、空気以外の付加的な光学要素を含む請求項1に記載のチャープパルス増幅システム。
- 前記付加的な光学要素は、光ビームデリバリファイバを含む請求項5に記載のチャープパルス増幅システム。
- 前記デリバリファイバは、シングルモードファイバ、シングルモード出力で動作するマルチモードファイバ、ホウリファイバ、フォトニック結晶ファイバ、誘導空気穴コアをもつファイバ、の一つを含む請求項6に記載のチャープパルス増幅システム。
- 前記少なくとも1つの増幅器は、ファイバレーザによってポンプされる、請求項1の規定に従うチャープパルス増幅システム。
- 前記少なくとも1つの増幅器は、Yb或いはNdファイバ増幅器からなる、請求項8の規定に従うチャープパルス増幅システム。
- 前記少なくとも1つの増幅器は、ファイバレーザによりコアポンプされる、請求項8の規定に従うチャープパルス増幅システム。
- 前記少なくとも1つの増幅器は、Nd−ファイバレーザ或いは増幅器でコアポンプされるYbファイバ増幅器である、請求項8の規定に従うチャープパルス増幅システム。
- 前記圧縮パルスが100nJより大きなエネルギをもつパルスである、請求項1の規定に従うチャープパルス増幅システム。
- 前記パルス圧縮器は、チャープファイバブラッグ格子とバルク格子の少なくとも1つからなる、請求項12の規定に従うチャープパルス増幅システム。
- 該パルス圧縮器は、部分的パルス圧縮を行うホウリ或いはフォトニックバンドギャップファイバを更に含む、請求項12の規定に従うチャープパルス増幅システム。
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US47499903P | 2003-06-03 | 2003-06-03 | |
US60/474,999 | 2003-06-03 | ||
US10/608,233 | 2003-06-30 | ||
US10/608,233 US7257302B2 (en) | 2003-06-03 | 2003-06-30 | In-line, high energy fiber chirped pulse amplification system |
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JP2010042248A Pending JP2010153900A (ja) | 2003-06-03 | 2010-02-26 | インライン、高エネルギファイバチャープパルス増幅システム |
JP2012097555A Pending JP2012137796A (ja) | 2003-06-03 | 2012-04-23 | インライン、高エネルギファイバチャープパルス増幅システム |
JP2012162766A Pending JP2012209597A (ja) | 2003-06-03 | 2012-07-23 | インライン、高エネルギファイバチャープパルス増幅システム |
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EP (2) | EP1629575B1 (ja) |
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TWI767619B (zh) * | 2021-03-19 | 2022-06-11 | 米雷迪恩飛秒光源股份有限公司 | 吉赫茲脈衝串列飛秒雷射源 |
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WO2004109869A2 (en) | 2004-12-16 |
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US7518788B2 (en) | 2009-04-14 |
WO2004109869A3 (en) | 2006-01-12 |
JP2010153900A (ja) | 2010-07-08 |
EP1629575A2 (en) | 2006-03-01 |
US7257302B2 (en) | 2007-08-14 |
EP2403076A2 (en) | 2012-01-04 |
JP2012209597A (ja) | 2012-10-25 |
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