JP5109443B2 - 光学モジュールおよび加工方法 - Google Patents
光学モジュールおよび加工方法 Download PDFInfo
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- JP5109443B2 JP5109443B2 JP2007088943A JP2007088943A JP5109443B2 JP 5109443 B2 JP5109443 B2 JP 5109443B2 JP 2007088943 A JP2007088943 A JP 2007088943A JP 2007088943 A JP2007088943 A JP 2007088943A JP 5109443 B2 JP5109443 B2 JP 5109443B2
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- Prior art keywords
- optical fiber
- light
- absorption
- amplification
- amplified
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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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/036—Optical fibres with cladding with or without a coating core or cladding comprising multiple layers
- G02B6/03616—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference
- G02B6/03622—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference having 2 layers only
- G02B6/03633—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference having 2 layers only arranged - -
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/036—Optical fibres with cladding with or without a coating core or cladding comprising multiple layers
- G02B6/03694—Multiple layers differing in properties other than the refractive index, e.g. attenuation, diffusion, stress properties
-
- 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
- H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
-
- 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
- H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
- H01S3/0672—Non-uniform radial doping
-
- 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
- H01S3/094007—Cladding pumping, i.e. pump light propagating in a clad surrounding the active core
-
- 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
- H01S3/094015—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light the pumped medium being a fibre with pump light recycling, i.e. with reinjection of the unused pump light back into the fiber, e.g. by reflectors or circulators
-
- 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
Description
Claims (10)
- 励起光が供給され被増幅光を光増幅する増幅用光ファイバと、この増幅用光ファイバから出力される前記励起光および前記被増幅光を入力して前記励起光を吸収する吸収用光ファイバと、前記増幅用光ファイバに前記被増幅光および前記励起光を供給する光結合器とを備え、
前記増幅用光ファイバおよび前記吸収用光ファイバそれぞれは、コアと、このコアを取り囲み前記コアより屈折率が低い第1クラッドと、この第1クラッドを取り囲み前記コアより屈折率が低い第2クラッドと、この第2クラッドを取り囲み前記第1クラッドおよび前記第2クラッドより屈折率が低い第3クラッドとを有し、前記被増幅光をシングルモードで前記コアにより導波させるとともに、前記励起光をマルチモードで前記コア,前記第1クラッドおよび前記第2クラッドにより導波させ、
前記増幅用光ファイバのコアは、前記励起光により励起され前記被増幅光を光増幅するための増幅用ドーパントが添加され、
前記吸収用光ファイバの第2クラッドは、前記励起光を吸収するための吸収用ドーパントが添加され、
前記増幅用光ファイバおよび前記吸収用光ファイバそれぞれのコアは互いに光学的に接続され、
前記増幅用光ファイバおよび前記吸収用光ファイバそれぞれの第1クラッドは互いに光学的に接続され、
前記増幅用光ファイバおよび前記吸収用光ファイバそれぞれの第2クラッドは互いに光学的に接続されている
ことを特徴とする光学モジュール。 - 前記増幅用ドーパントがYbであり、前記吸収用ドーパントがErであることを特徴とする請求項1記載の光学モジュール。
- 前記吸収用光ファイバの第2クラッドにおけるErの添加濃度が1000wt.ppm以上であることを特徴とする請求項2記載の光学モジュール。
- 前記吸収用光ファイバのコアが純石英で構成されることを特徴とする請求項1記載の光学モジュール。
- 前記吸収用光ファイバの第1クラッドは、前記励起光により励起され前記被増幅光を光増幅するための増幅用ドーパントが添加されていないことを特徴とする請求項1記載の光学モジュール。
- 前記吸収用光ファイバのコアは、前記励起光を吸収するための吸収用ドーパントが添加されていないことを特徴とする請求項1記載の光学モジュール。
- 前記増幅用光ファイバの前記被増幅光および前記励起光の出力端に前記吸収用光ファイバが接続され、
前記吸収用光ファイバの出力端に接続され、前記被増幅光をシングルモードで導波させるコアと、このコアを取り囲み前記コアより屈折率が低いクラッドとを有するシングルモード光ファイバを備える
ことを特徴とする請求項1記載の光学モジュール。
- 前記吸収用光ファイバの第1クラッドにも前記励起光を吸収するための吸収用ドーパントが添加されていることを特徴とする請求項1記載の光学モジュール。
- 請求項1〜8の何れか1項に記載の光学モジュールを用い、前記光学モジュールに含まれる前記光結合器を経て前記被増幅光および前記励起光を前記増幅用光ファイバに供給し、前記光学モジュールに含まれる前記吸収用光ファイバの出力端から前記被増幅光を出力し、その出力した前記被増幅光を光学系により加工対象物に集光照射して該加工対象物を加工することを特徴とする加工方法。
- 前記増幅用光ファイバの前記被増幅光および前記励起光の出力端に前記吸収用光ファイバが接続され、前記吸収用光ファイバにおいて前記励起光をアップコンバージョンして可視光に変換し、その可視光を前記吸収用光ファイバの出力端から出力し、その出力した前記可視光を前記光学系により前記加工対象物に集光照射して位置決めを行うことを特徴とする請求項9記載の加工方法。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007088943A JP5109443B2 (ja) | 2007-03-29 | 2007-03-29 | 光学モジュールおよび加工方法 |
US12/076,843 US7706055B2 (en) | 2007-03-29 | 2008-03-24 | Optical module and processing method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007088943A JP5109443B2 (ja) | 2007-03-29 | 2007-03-29 | 光学モジュールおよび加工方法 |
Publications (2)
Publication Number | Publication Date |
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JP2008251694A JP2008251694A (ja) | 2008-10-16 |
JP5109443B2 true JP5109443B2 (ja) | 2012-12-26 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2007088943A Expired - Fee Related JP5109443B2 (ja) | 2007-03-29 | 2007-03-29 | 光学モジュールおよび加工方法 |
Country Status (2)
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US (1) | US7706055B2 (ja) |
JP (1) | JP5109443B2 (ja) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103155309B (zh) * | 2010-10-29 | 2016-06-01 | 古河电气工业株式会社 | 光放大装置以及光传送系统 |
CN104169763B (zh) * | 2012-03-28 | 2017-05-10 | 株式会社藤仓 | 光纤光学系统及其制造方法 |
CN103117502B (zh) * | 2013-01-24 | 2015-09-16 | 中国电子科技集团公司第十一研究所 | 光纤放大器和光纤放大器输出的控制方法 |
JP2017194514A (ja) * | 2016-04-19 | 2017-10-26 | 株式会社フジクラ | 光部品、ファイバレーザユニット、およびファイバレーザシステム |
CN114268010B (zh) * | 2022-03-02 | 2022-06-14 | 武汉锐科光纤激光技术股份有限公司 | 光纤放大器 |
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JP2001350166A (ja) * | 2000-06-09 | 2001-12-21 | Ishikawajima Harima Heavy Ind Co Ltd | 不可視波長領域レーザ光の光軸位置調整方法 |
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JP2003236685A (ja) * | 2003-01-06 | 2003-08-26 | Sunx Ltd | レーザマーキング装置 |
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JP2008171985A (ja) * | 2007-01-11 | 2008-07-24 | Fujikura Ltd | 残留光除去用ファイバ、これを用いた残留光除去構造及び光増幅器並びにファイバレーザ |
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2007
- 2007-03-29 JP JP2007088943A patent/JP5109443B2/ja not_active Expired - Fee Related
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2008
- 2008-03-24 US US12/076,843 patent/US7706055B2/en not_active Expired - Fee Related
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Publication number | Publication date |
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US20080239471A1 (en) | 2008-10-02 |
US7706055B2 (en) | 2010-04-27 |
JP2008251694A (ja) | 2008-10-16 |
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