JP6223650B1 - レーザ発振装置 - Google Patents
レーザ発振装置 Download PDFInfo
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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
- H01S3/07—Construction or shape of active medium consisting of a plurality of parts, e.g. segments
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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
- H01S3/08—Construction or shape of optical resonators or components thereof
- H01S3/08004—Construction or shape of optical resonators or components thereof incorporating a dispersive element, e.g. a prism for wavelength selection
- H01S3/08009—Construction or shape of optical resonators or components thereof incorporating a dispersive element, e.g. a prism for wavelength selection using a diffraction grating
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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
- H01S3/08—Construction or shape of optical resonators or components thereof
- H01S3/08004—Construction or shape of optical resonators or components thereof incorporating a dispersive element, e.g. a prism for wavelength selection
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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
- H01S3/08—Construction or shape of optical resonators or components thereof
- H01S3/08086—Multiple-wavelength emission
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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
- H01S3/08—Construction or shape of optical resonators or components thereof
- H01S3/081—Construction or shape of optical resonators or components thereof comprising three or more reflectors
- H01S3/082—Construction or shape of optical resonators or components thereof comprising three or more reflectors defining a plurality of resonators, e.g. for mode selection or suppression
- H01S3/0823—Construction or shape of optical resonators or components thereof comprising three or more reflectors defining a plurality of resonators, e.g. for mode selection or suppression incorporating a dispersive element, e.g. a prism for wavelength selection
- H01S3/0826—Construction or shape of optical resonators or components thereof comprising three or more reflectors defining a plurality of resonators, e.g. for mode selection or suppression incorporating a dispersive element, e.g. a prism for wavelength selection using a diffraction grating
-
- 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
- H01S3/08—Construction or shape of optical resonators or components thereof
- H01S3/08086—Multiple-wavelength emission
- H01S3/0809—Two-wavelenghth emission
-
- 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
- H01S3/08—Construction or shape of optical resonators or components thereof
- H01S3/081—Construction or shape of optical resonators or components thereof comprising three or more reflectors
- H01S3/082—Construction or shape of optical resonators or components thereof comprising three or more reflectors defining a plurality of resonators, e.g. for mode selection or suppression
- H01S3/0823—Construction or shape of optical resonators or components thereof comprising three or more reflectors defining a plurality of resonators, e.g. for mode selection or suppression incorporating a dispersive element, e.g. a prism for wavelength selection
-
- 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
- H01S5/40—Arrangement of two or more semiconductor lasers, not provided for in groups H01S5/02 - H01S5/30
- H01S5/4025—Array arrangements, e.g. constituted by discrete laser diodes or laser bar
- H01S5/4031—Edge-emitting structures
- H01S5/4062—Edge-emitting structures with an external cavity or using internal filters, e.g. Talbot filters
-
- 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
- H01S5/40—Arrangement of two or more semiconductor lasers, not provided for in groups H01S5/02 - H01S5/30
- H01S5/4025—Array arrangements, e.g. constituted by discrete laser diodes or laser bar
- H01S5/4031—Edge-emitting structures
- H01S5/4068—Edge-emitting structures with lateral coupling by axially offset or by merging waveguides, e.g. Y-couplers
Abstract
Description
図1は、本発明の実施の形態1に係るレーザ発振装置の構成を示す模式図である。実施の形態1に係るレーザ発振装置100は、制御部90と、駆動回路71,72と、駆動電源81,82と、外部共振器10とを備えている。外部共振器10は、発するレーザビームの波長が異なるレーザ媒質11,12と、レーザビームの一部を透過させるとともに、残りを反射してレーザ媒質11,12側に戻す部分反射素子である部分反射ミラー14とで構成されている。外部共振器10の内部には、レーザ媒質11,12から発せられた波長の異なる複数のレーザビームを一つに重ねて波長結合させ、部分反射ミラー14へ出射する回折格子13と、レーザ媒質11,12と回折格子13との間に配置され、複数のレーザビームを回折格子13上で一つに重畳するプリズム15とが配置されている。回折格子13は、光の入射角と出射角との関係が波長によって変化する波長依存性を示す波長分散素子である。プリズム15は、頂角φをなす二つの面の一方が入射面となり、他方の面が出射面となるように設置されている。駆動回路71,72は、レーザ媒質11,12のオンオフの制御及び短絡発生時にレーザ媒質11,12への電力供給を遮断する保護機能を有する。駆動電源81,82は、駆動回路71,72に電力を供給する電源である。制御部90は、数値制御装置から入力される指令に基づいて駆動回路71,72を制御する。
d(sinα+sinβ)=mλ ・・・(1)
ωd=(cosβ/cosα)ωi ・・・(2)
sinθ1=nsinθ2 ・・・(5)
nsinθ3=sinθ4 ・・・(6)
θ2+θ3=φ ・・・(7)
図4は、本発明の実施の形態2に係るレーザ発振装置の構成を示す図である。実施の形態2に係るレーザ発振装置101は、外部共振器10の構成が実施の形態1と相違する。
Claims (4)
- 発するレーザビームの波長が異なる複数のレーザ媒質と、前記レーザビームの一部を透過させるとともに、残りを反射して前記レーザ媒質側に戻す部分反射素子とで構成された外部共振器を備え、
前記外部共振器の内部には、
複数の前記レーザ媒質から発せられた波長の異なる複数の前記レーザビームを一つに重ね、波長結合させて前記部分反射素子へ出射する波長分散素子と、
複数の前記レーザ媒質と前記波長分散素子との間に配置され、複数の前記レーザビームを前記波長分散素子上で一つに重畳するとともに、頂角をなす二つの面の一方が入射面であり、他方の面が出射面であるプリズムとが配置されており、
前記プリズムは、複数の前記レーザビームの前記波長結合がなされた後でのビーム径の差及び発散角の差を、複数の前記レーザビームが前記波長分散素子へ直接入射する場合よりも小さくすることを特徴とするレーザ発振装置。 - 前記プリズムは、複数の前記レーザ媒質からのレーザビーム同士がなす角度を、前記波長分散素子側で小さくすることを特徴とする請求項1に記載のレーザ発振装置。
- 前記プリズムは、複数の前記レーザ媒質からのレーザビーム同士がなす角度を、前記波長分散素子側で大きくすることを特徴とする請求項1に記載のレーザ発振装置。
- 発するレーザビームの波長が異なる複数のレーザ媒質と、
複数の前記レーザ媒質から入射した複数の前記レーザビームの一部を反射して前記レーザ媒質に戻し、残りの複数の前記レーザビームを波長結合させて重ねて出射する波長分散素子とで構成された外部共振器を備え、
前記外部共振器の内部には、
複数の前記レーザ媒質と前記波長分散素子との間に配置され、複数の前記レーザビームを前記波長分散素子上で一つに重畳するとともに、頂角をなす二つの面の一方が入射面であり、他方の面が出射面であるプリズムとが配置されており、
前記プリズムは、複数の前記レーザビームの前記波長結合がなされた後でのビーム径の差及び発散角の差を、複数の前記レーザビームが前記波長分散素子へ直接入射する場合よりも小さくすることを特徴とするレーザ発振装置。
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PCT/JP2017/005191 WO2018146819A1 (ja) | 2017-02-13 | 2017-02-13 | レーザ発振装置 |
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US (1) | US10840670B2 (ja) |
JP (1) | JP6223650B1 (ja) |
CN (1) | CN110036543A (ja) |
DE (1) | DE112017005416B4 (ja) |
WO (1) | WO2018146819A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019193640A1 (ja) * | 2018-04-02 | 2019-10-10 | 三菱電機株式会社 | レーザ装置 |
US10714902B2 (en) | 2017-03-01 | 2020-07-14 | Mitsubishi Electric Corporation | Laser oscillator |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN113659416B (zh) * | 2021-08-11 | 2022-08-16 | 中国科学院长春光学精密机械与物理研究所 | 双波长激光共轴输出系统与方法 |
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CN110036543A (zh) | 2019-07-19 |
WO2018146819A1 (ja) | 2018-08-16 |
JPWO2018146819A1 (ja) | 2019-02-14 |
DE112017005416T5 (de) | 2019-08-22 |
DE112017005416B4 (de) | 2022-02-24 |
US20190252844A1 (en) | 2019-08-15 |
US10840670B2 (en) | 2020-11-17 |
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