JP2009536785A - 光放射を提供する装置 - Google Patents
光放射を提供する装置 Download PDFInfo
- Publication number
- JP2009536785A JP2009536785A JP2009508486A JP2009508486A JP2009536785A JP 2009536785 A JP2009536785 A JP 2009536785A JP 2009508486 A JP2009508486 A JP 2009508486A JP 2009508486 A JP2009508486 A JP 2009508486A JP 2009536785 A JP2009536785 A JP 2009536785A
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- Prior art keywords
- laser
- fiber
- core
- pulse
- reflector
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Images
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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
- H01S3/1691—Solid materials characterised by additives / sensitisers / promoters as further dopants
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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
- H01S3/14—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
- H01S3/1691—Solid materials characterised by additives / sensitisers / promoters as further dopants
- H01S3/1693—Solid materials characterised by additives / sensitisers / promoters as further dopants aluminium
-
- 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
- H01S3/14—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
- H01S3/17—Solid materials amorphous, e.g. glass
- H01S3/176—Solid materials amorphous, e.g. glass silica or silicate glass
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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
- H01S5/00—Semiconductor lasers
- H01S5/06—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium
- H01S5/065—Mode locking; Mode suppression; Mode selection ; Self pulsating
- H01S5/0656—Seeding, i.e. an additional light input is provided for controlling the laser modes, for example by back-reflecting light from an external optical component
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- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Lasers (AREA)
- Semiconductor Lasers (AREA)
- Laser Beam Processing (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
【選択図】図38
Description
Claims (39)
- 光放射を提供する装置であって、シーディング放射を提供するシードレーザーと、前記シーディング放射を増幅する少なくとも1つの増幅器と、反射器と、を有する装置において、
・前記シードレーザーは、ファブリペロー半導体レーザーであり、
・前記シードレーザーは、前記反射器を介して前記増幅器に接続され、
・前記反射器は、前記シードレーザーによって放射された前記シーディング放射の中のある比率を前記シードレーザー内に反射して戻すべく構成され、且つ、
・前記増幅器は、屈折率n1を具備したコアと、屈折率n2を具備したペデスタルと、を有する光ファイバを有し、且つ、この場合に、前記光ファイバは、前記ペデスタルを取り囲む屈折率n3を具備したガラスから製造された第1クラッディングを含み、この場合に、
・n1はn2より大きく、
・n2はn3より大きい、装置。 - 前記反射器は、分散型反射器である請求項1記載の装置。
- 前記シードレーザーは、光学的有効走行時間によって特徴付けられ、前記反射器は、帯域幅及び前記帯域幅にわたる往復反射時間遅延変動によって特徴付けられ、且つ、前記往復反射時間遅延変動は、前記光学的有効走行時間を上回る請求項1又は2記載の装置。
- 前記帯域幅は、1nmを上回る請求項3記載の装置。
- 前記比率は、20%未満である前項までの請求項中のいずれか一項記載の装置。
- 前記比率は、1%〜10%である請求項5記載の装置。
- 前記反射器は、前記シードレーザーから5m未満の距離に配置される前項までの請求項中のいずれか一項記載の装置。
- 前記距離は、2m未満である請求項7記載の装置。
- 前記距離は、0.5m〜1.5mである請求項8記載の装置。
- 前記反射器は、前記シードレーザーから5mm〜5cmの距離に配置される請求項8記載の装置。
- 前記装置から放射されたピークパワーは、1kWを超過する前項までの請求項中のいずれか一項記載の装置。
- ・前記コアは、シリカ、0.1〜4モルパーセントの範囲の濃度のアルミナ、2〜20モルパーセントの範囲の濃度の燐酸塩を有し、且つ、
・前記ペデスタルは、シリカ、燐酸塩、及び酸化ゲルマニウムを有する前項までの請求項中のいずれか一項記載の装置。 - 前記光ファイバは、前記コア及び前記ペデスタルの少なくとも1つのものの内部に配置された少なくとも1つの希土類ドーパントによってドーピングされる前項までの請求項中のいずれか一項記載の装置。
- 前記希土類ドーパントは、2000〜60000ppmの範囲の濃度を具備したイッテルビウムである請求項13記載の装置。
- 前記イッテルビウムの濃度は、約15000〜50000ppmである請求項14記載の装置。
- 前記イッテルビウムの濃度は、約20000〜45000ppmである請求項15記載の装置。
- 前記コアは、前記コア内に約12〜17モルパーセントの濃度の燐酸塩を含む請求項13記載の装置。
- 前記コア内の前記燐酸塩の濃度は、約15モルパーセントである請求項17記載の装置。
- 前記コアは、約0.20〜1モルパーセントの濃度のアルミナを含む前項までの請求項中のいずれか一項記載の装置。
- 前記アルミナの濃度は、約0.3〜0.8モルパーセントである請求項19記載の装置。
- 前記光ファイバは、信号波長においてマルチモード導波路である前項までの請求項中のいずれか一項記載の装置。
- 前記光ファイバは、大きな長さにわたって、大きな歪を伴うことなしに、シングルモード光を伝播させるべく構成される前項までの請求項中のいずれか一項記載の装置。
- 前記光ファイバは、シングルモード導波路である請求項1〜20の中のいずれか一項記載の装置。
- 前記光ファイバは、前記コア内に複屈折性を誘発する少なくとも1つのストレス生成領域を有する前項までの請求項中のいずれか一項記載の装置。
- 前記光ファイバは、0.15未満の開口数を具備した導波路を有する前項までの請求項中のいずれか一項記載の装置。
- 前記光ファイバは、0.15未満の開口数を具備した導波路を有する耐フォトダークニング型光ファイバであり、この場合に、
・前記コアは、シリカ、約0.3〜0.8モルパーセントの濃度のアルミナ、実質的に15モルパーセントの濃度の燐酸塩、実質的に20000〜45000ppmの範囲の濃度のイッテルビウムを有し、
・前記ペデスタルは、シリカ、燐酸塩、及び酸化ゲルマニウムを有する前項までの請求項中のいずれか一項記載の装置。 - 前記導波路は、信号波長においてマルチモード導波路であり、且つ、この場合に、前記導波路は、大きな長さにわたって、大きな歪を伴うことなしに、シングルモード光を伝播させるべく構成される請求項26記載の装置。
- 前記導波路は、シングルモード導波路である請求項26記載の装置。
- 前記反射器は、ファイバブラッグ格子である前項までの請求項中のいずれか一項記載の装置。
- 前記ファイバブラッグ格子は、チャープされる請求項29記載の装置。
- 往復反射時間遅延変動は、約50ps〜1000psである前項までの請求項中のいずれか一項記載の装置。
- 前記往復反射時間遅延変動は、100ps〜600psである請求項31記載の装置。
- 前記光学的有効走行時間は、10ps〜50psである前項までの請求項中のいずれか一項記載の装置。
- 前記光学的有効走行時間は、25ps〜40psである請求項33記載の装置。
- レーザー供給ファイバと、加工ヘッドと、を含み、
前記装置は、材料を加工するレーザーの形態である前項までの請求項中のいずれか一項記載の装置。 - 前記光放射が、パルス繰り返し周波数のレンジにわたって前記材料を加工するべく十分な平均パワー及びピークパワーを具備するように、前記シードレーザー及び前記増幅器を制御するべく構成されたコントローラを含む請求項35記載の装置。
- コントローラを含み、この場合に、前記光放射は、パルス幅を具備したパルスによって特徴付けられ、且つ、前記コントローラは、前記パルス繰り返し周波数の変化に伴って前記パルス幅を変化させる請求項35又は36記載の装置。
- 前項までの請求項中のいずれか一項記載の装置を使用して加工された際の材料。
- 半導体パッケージ(プラスチック又はセラミック)、携帯電話機上のキーパッド、iPOD、コンピュータ、コンポーネント、パッケージ、或いは、商用又は産業用の製品の形態である請求項38記載の材料。
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JP2012510176A (ja) * | 2008-11-28 | 2012-04-26 | エヌケイティー フォトニクス アクティーゼルスカブ | 改良されたクラッドポンプ光導波路 |
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JP2021136439A (ja) * | 2020-02-21 | 2021-09-13 | トヨタ自動車株式会社 | 増幅ファイバ及びレーザ光出射装置 |
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Also Published As
Publication number | Publication date |
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EP2016652A2 (en) | 2009-01-21 |
JP2014112705A (ja) | 2014-06-19 |
CA2652006C (en) | 2017-05-30 |
JP5467864B2 (ja) | 2014-04-09 |
WO2007132182A4 (en) | 2009-07-09 |
CN101517848B (zh) | 2011-05-11 |
EP2763247A2 (en) | 2014-08-06 |
CA2652006A1 (en) | 2007-11-22 |
US20110206074A1 (en) | 2011-08-25 |
EP2763247A3 (en) | 2014-09-17 |
WO2007132182A2 (en) | 2007-11-22 |
EP2016652B1 (en) | 2014-06-18 |
KR101383197B1 (ko) | 2014-04-09 |
US7936796B2 (en) | 2011-05-03 |
US20090016387A1 (en) | 2009-01-15 |
CN102157887B (zh) | 2014-03-26 |
WO2007132182A3 (en) | 2009-05-14 |
KR20090015964A (ko) | 2009-02-12 |
CN101517848A (zh) | 2009-08-26 |
CN102157887A (zh) | 2011-08-17 |
US20110216790A1 (en) | 2011-09-08 |
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