JP2012512539A - Lバンドの高エネルギーサブピコ秒パルス用の光ファイバを有するパルスレーザ、及び眼科手術用レーザ用具 - Google Patents
Lバンドの高エネルギーサブピコ秒パルス用の光ファイバを有するパルスレーザ、及び眼科手術用レーザ用具 Download PDFInfo
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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
- H01S3/0057—Temporal shaping, e.g. pulse compression, frequency chirping
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
- A61F9/007—Methods or devices for eye surgery
- A61F9/008—Methods or devices for eye surgery using laser
- A61F9/00825—Methods or devices for eye surgery using laser for photodisruption
- A61F9/00831—Transplantation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/062—Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam
- B23K26/0622—Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam by shaping pulses
- B23K26/0624—Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam by shaping pulses using ultrashort pulses, i.e. pulses of 1ns or less
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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
- H01S3/067—Fibre lasers
- H01S3/06754—Fibre amplifiers
- H01S3/06758—Tandem amplifiers
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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
- H01S3/09—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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
- A61F9/007—Methods or devices for eye surgery
- A61F9/008—Methods or devices for eye surgery using laser
- A61F2009/00861—Methods or devices for eye surgery using laser adapted for treatment at a particular location
- A61F2009/00872—Cornea
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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
- H01S2302/00—Amplification / lasing wavelength
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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
- H01S2303/00—Pumping wavelength
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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
- H01S3/05—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
- H01S3/067—Fibre lasers
- H01S3/06754—Fibre amplifiers
- H01S3/06762—Fibre amplifiers having a specific amplification band
- H01S3/0677—L-band amplifiers, i.e. amplification in the range of about 1560 nm to 1610 nm
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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
- H01S3/09—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
- H01S3/094042—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light of a fibre laser
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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
- H01S3/1601—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
- 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
- H01S3/1601—Solid materials characterised by an active (lasing) ion
- H01S3/1603—Solid materials characterised by an active (lasing) ion rare earth
- H01S3/1618—Solid materials characterised by an active (lasing) ion rare earth ytterbium
Abstract
【課題】 角膜を切開するのに十分なエネルギーを示し、1565nmないし1625nmの波長範囲で動作するエルビウム添加ファイバに基づくサブピコ秒レーザを提供すること。
【解決手段】 本発明は高エネルギーサブピコ秒パルスを増幅するチャープパルス増幅ファイバレーザ(10)に関し、レーザは発振器(1)と、ファイバ伸張器(3)と、エルビウム添加又はエルビウム−イッテルビウム共添加光ファイバ部(4、7)、及び出力増幅器光ファイバ(7)に結合することにより光学的ポンピングを行うのに適したポンプ(8)を備える一つ以上の前置増幅段並びに一つの出力増幅段と、圧縮器(9)とを備える。本発明によれば、出力段のポンプ(8)は1530nmないし1565nmの範囲にある少なくとも一つのポンプ波長λPを発生させ、レーザパルス(20)の放射波長は1565nmないし1625nmの範囲にあり、レーザパルス(20)のエネルギーは10nJないし数10μJの範囲にある。本発明はまたそのようなレーザを含む眼科手術用用具を提供する。
【選択図】 図1
Description
2 レートリデューサ
3 パルス伸張器
4 前置増幅光ファイバ部
5 光アイソレータ
6 単一エミッタダイオード
7 出力増幅器光ファイバ部
8 ポンプ
9 パルス圧縮器
10 パルスレーザ
11 光パルス
17 増幅された光パルス
20 出力レーザパルス
Claims (11)
- 良好な空間品質と高エネルギーのサブピコ秒パルスを増幅するチャープパルス増幅ファイバレーザ(10)において、
サブピコ秒の持続時間と1565nmないし1625nmの範囲にある放射波長の光パルス(11)を放射するのに適した発振器(1)と、
前記光パルス(11)を時間的に伸長するのに適したファイバパルス伸張器(3)と、
一つ以上の前置増幅段であって、それぞれがエルビウム添加又はエルビウム−イッテルビウム共添加光ファイバ部(4)と、前記前置増幅光ファイバ部(4)を光学的にポンピングするのに適したポンプ(6)とを備える一つ以上の前置増幅段と、
出力レーザパルス(20)の繰り返し速度を10kHzないし1MHzの範囲に入るように減速するのに適した少なくとも一つのレートリデューサ(2)と、
エルビウム添加又はエルビウム−イッテルビウム共添加光ファイバ部(7)及び前記出力増幅器光ファイバ部(7)を光学的にポンピングするのに適したポンプ(8)を備え、増幅されたパルス(17)を作り出すのに適した出力増幅段と、
前記増幅された光パルス(17)を時間的に再圧縮して出力レーザパルス(20)を作り出すのに適したパルス圧縮器(9)と
を備えるチャープパルス増幅光ファイバレーザ(10)であって、
前記出力増幅器光ファイバ(7)の前記ポンプ(8)は、1530nmないし1565nmの範囲にある少なくとも一つのポンプ波長λPを発生させて1565nmないし1625nmの範囲にある放射波長と100nJないし100μJの範囲にあるエネルギーの出力パルス(20)を得るのに適している
ことを特徴とするチャープパルス増幅光ファイバレーザ(10)。 - 前記出力増幅段の前記光ファイバ部(7)は大モード面積(LMA)ファイバであることを特徴とする請求項1に記載のパルスレーザ(10)。
- 前記出力ビームは1.5未満の係数M2を有する良好な空間品質を有することを特徴とする請求項1又は請求項2に記載のパルスレーザ。
- 前記出力増幅器の前記ポンプ(8)はエルビウム添加又はエルビウム−イッテルビウム共添加光ファイバレーザであることを特徴とする請求項1ないし3の何れか一つに記載のパルスレーザ。
- 前記出力増幅器の前記ポンプ(8)は前記出力増幅器光ファイバ(7)のドープされたコアに直接結合されることを特徴とする請求項1ないし4の何れか一つに記載のパルスレーザ。
- 前記出力増幅器の前記ポンプ(8)は併進及び/又は逆進式に前記出力増幅器光ファイバ部(7)をポンピングするのに適していることを特徴とする請求項1ないし5の何れか一つに記載のパルスレーザ。
- 前記出力増幅器の前記ポンプ(8)は1530nmないし1565nmの範囲にある少なくとも一つの第2のポンプ波長を発生させるのに適していることを特徴とする請求項1ないし6の何れか一つに記載のパルスレーザ。
- 前記出力増幅器の前記ポンプ(8)の前記波長λPは出力パルスを分光的及び時間的に最適化するように調整可能であることを特徴とする請求項1ないし7の何れか一つに記載のパルスレーザ。
- ポンプ波長λPの前記第1のポンプ(8)と同時に970nmないし990nmの範囲にあるもう一つのポンプ波長λP’の出力増幅器光ファイバ部(7)を光学的にポンピングして前記増幅器光ファイバ部における増幅利得を増加するのに適しているもう一つのポンプをさらに含むことを特徴とする請求項1ないし8の何れか一つに記載のパルスレーザ。
- 請求項1ないし9の何れか一つに記載の光ファイバパルスレーザを備える眼科手術用レーザ用具。
- 前記レーザパルス(20)のエネルギーは100nJより大きいことを特徴とする請求項10に記載のレーザ用具。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0858687 | 2008-12-17 | ||
FR0858687A FR2939974A1 (fr) | 2008-12-17 | 2008-12-17 | Laser impulsionnel a fibre optique pour impulsions sub-picoseconde de haute energie dans la bande l et outil laser pour chirurgie ophtalmique |
PCT/FR2009/052579 WO2010076511A1 (fr) | 2008-12-17 | 2009-12-16 | Laser impulsionnel a fibre optique pour impulsions sub-picoseconde de haute energie dans la bande l et outil laser pour chirurgie ophtalmique |
Publications (1)
Publication Number | Publication Date |
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JP2012512539A true JP2012512539A (ja) | 2012-05-31 |
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Application Number | Title | Priority Date | Filing Date |
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JP2011541562A Pending JP2012512539A (ja) | 2008-12-17 | 2009-12-16 | Lバンドの高エネルギーサブピコ秒パルス用の光ファイバを有するパルスレーザ、及び眼科手術用レーザ用具 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20110306954A1 (ja) |
EP (1) | EP2366214B1 (ja) |
JP (1) | JP2012512539A (ja) |
FR (1) | FR2939974A1 (ja) |
WO (1) | WO2010076511A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016513989A (ja) * | 2013-02-27 | 2016-05-19 | ノバルティス アーゲー | レーザー装置および標的材料をレーザー処理するための方法 |
JP2018043034A (ja) * | 2017-11-27 | 2018-03-22 | ノバルティス アーゲー | レーザー装置および標的材料をレーザー処理するための方法 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2014149541A1 (en) * | 2013-03-15 | 2014-09-25 | Amo Development, Llc. | Hybrid fiber-bulk laser isolator |
DE102014201752A1 (de) * | 2014-01-31 | 2015-08-06 | Siemens Aktiengesellschaft | Überspannungsschutz mit einer Funkenstrecke |
CN104873268A (zh) * | 2015-06-05 | 2015-09-02 | 湖南中聚光电科技发展有限公司 | 一种光纤激光手术刀 |
GB2598774A (en) * | 2020-09-14 | 2022-03-16 | Coherent Scotland Ltd | Apparatus and method for generating 780 nm ultrashort-pulsed laser radiation |
GB2598775A (en) * | 2020-09-14 | 2022-03-16 | Coherent Scotland Ltd | 780 nm ultrashort-pulsed fiber laser |
FR3118331B1 (fr) * | 2020-12-23 | 2022-11-25 | Ilasis Laser | Système laser à fibre optique à impulsion picoseconde de forte énergie accordable en durée et utilisation d’un tel système laser |
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2008
- 2008-12-17 FR FR0858687A patent/FR2939974A1/fr not_active Withdrawn
-
2009
- 2009-12-16 WO PCT/FR2009/052579 patent/WO2010076511A1/fr active Application Filing
- 2009-12-16 US US13/139,801 patent/US20110306954A1/en not_active Abandoned
- 2009-12-16 JP JP2011541562A patent/JP2012512539A/ja active Pending
- 2009-12-16 EP EP09803881A patent/EP2366214B1/fr not_active Not-in-force
Patent Citations (12)
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WO1999050937A1 (en) * | 1998-03-31 | 1999-10-07 | Corning Incorporated | Optical amplifier with wide flat gain dynamic range |
EP1087475A1 (fr) * | 1999-09-23 | 2001-03-28 | Alcatel | Amplificateur a fibre optique en bande L. |
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US20110306954A1 (en) | 2011-12-15 |
WO2010076511A1 (fr) | 2010-07-08 |
EP2366214A1 (fr) | 2011-09-21 |
FR2939974A1 (fr) | 2010-06-18 |
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