JP4473617B2 - 固体レーザ媒質の励起分布を制御する装置および方法 - Google Patents
固体レーザ媒質の励起分布を制御する装置および方法 Download PDFInfo
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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
- H01S3/23—Arrangements of two or more lasers not provided for in groups H01S3/02 - H01S3/22, e.g. tandem arrangements of separate active media
- H01S3/2308—Amplifier arrangements, e.g. MOPA
- H01S3/2325—Multi-pass amplifiers, e.g. regenerative amplifiers
- H01S3/2341—Four pass 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
- H01S3/10—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
- H01S3/1001—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating in optical amplifiers by controlling the optical pumping
-
- 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
- H01S3/0014—Monitoring arrangements not otherwise provided for
-
- 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
- H01S3/005—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
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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
- H01S3/02—Constructional details
- H01S3/025—Constructional details of solid state lasers, e.g. housings or mountings
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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
- H01S3/08072—Thermal lensing or thermally induced birefringence; Compensation thereof
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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
- H01S3/08095—Zig-zag travelling beam through the active medium
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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
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/13—Stabilisation of laser output parameters, e.g. frequency or amplitude
- H01S3/1301—Stabilisation of laser output parameters, e.g. frequency or amplitude in optical amplifiers
- H01S3/13013—Stabilisation of laser output parameters, e.g. frequency or amplitude in optical amplifiers by controlling the optical pumping
Description
Claims (2)
- 励起光が照射されることにより励起され、所定波長の光を誘導放出することの可能な固体レーザ媒質と、
前記固体レーザ媒質に前記励起光を照射する励起光源と、
前記励起光源を移動させて前記固体レーザ媒質および前記励起光源間の距離を変更することの可能な移動装置と、
前記固体レーザ媒質の励起分布を測定する測定部と、
前記測定部によって測定された励起分布に応じて前記移動装置を駆動し、前記固体レーザ媒質および前記励起光源間の距離を調整することにより、前記固体レーザ媒質の励起分布を制御する制御部と
を備え、
前記固体レーザ媒質は、第1および第2の端面と、それらの端面間を延在する長尺の上面および底面と、前記上面および底面の間で前記第1および第2の端面の一方から他方まで延在する二つの側面とを有し、かつ前記上面、底面および二つの側面に平行な方向に沿った長さと、前記上面および底面に垂直な方向に沿った高さと、前記二つの側面に垂直な方向に沿った厚さとを有するスラブ形状の媒質であり、
前記励起光源は、前記固体レーザ媒質の高さ方向に沿って積み重ねられた第1および第2の単位光源を含んでおり、
前記測定部は、前記励起光源から前記励起光が照射されているときに前記固体レーザ媒質の第1または第2の端面から発する自然放出光の画像を取得する撮像装置を有しており、前記励起分布を前記固体レーザ媒質の厚さ方向及び前記高さ方向における二次元分布として測定し、
前記制御部は、前記画像を用いて前記固体レーザ媒質の高さ方向における前記自然放出光の輝度分布を求め、その輝度分布において前記第1および第2の単位光源の発光にそれぞれ対応する二つのピーク間に位置する谷の深さが最小となるように前記移動装置を駆動する、
励起分布制御装置。 - 励起光源から励起光が照射されることにより励起され、所定波長の光を誘導放出することの可能な固体レーザ媒質の励起分布を制御する方法であって、
前記固体レーザ媒質の励起分布を測定する測定ステップと、
測定された励起分布に応じて前記励起光源を移動させ、前記固体レーザ媒質および前記励起光源間の距離を調整する距離調整ステップと、
を備え、
前記固体レーザ媒質は、第1および第2の端面と、それらの端面間を延在する長尺の上面および底面と、前記上面および底面の間で前記第1および第2の端面の一方から他方まで延在する二つの側面とを有し、かつ前記上面、底面および二つの側面に平行な方向に沿った長さと、前記上面および底面に垂直な方向に沿った高さと、前記二つの側面に垂直な方向に沿った厚さとを有するスラブ形状の媒質であり、
前記励起光源は、前記固体レーザ媒質の高さ方向に沿って積み重ねられた第1および第2の単位光源を含んでおり、
前記測定ステップでは、前記励起光源から前記励起光が照射されているときに前記固体レーザ媒質の第1または第2の端面から発する自然放出光の画像を取得することにより、前記励起分布を前記固体レーザ媒質の厚さ方向及び前記高さ方向における二次元分布として測定し、
前記距離調整ステップでは、前記画像を用いて前記固体レーザ媒質の高さ方向における前記自然放出光の強度分布を求め、その強度分布において前記第1および第2の単位光源の発光にそれぞれ対応する二つのピーク間に位置する谷の深さが最小となるように前記距離を調整する、
励起分布制御方法。
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JP2004092895A JP4473617B2 (ja) | 2004-03-26 | 2004-03-26 | 固体レーザ媒質の励起分布を制御する装置および方法 |
PCT/JP2005/005504 WO2005093914A1 (ja) | 2004-03-26 | 2005-03-25 | 固体レーザ媒質の励起分布を制御する装置および方法 |
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JP2004092895A JP4473617B2 (ja) | 2004-03-26 | 2004-03-26 | 固体レーザ媒質の励起分布を制御する装置および方法 |
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JP2005285812A JP2005285812A (ja) | 2005-10-13 |
JP4473617B2 true JP4473617B2 (ja) | 2010-06-02 |
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US8547632B2 (en) * | 2009-08-19 | 2013-10-01 | Lawrence Livermore National Security, Llc | Method and system for homogenizing diode laser pump arrays |
EP2287643B1 (en) | 2009-08-19 | 2020-05-06 | Lawrence Livermore National Security, LLC | Diffractive laser beam homogenizer including a photo-active material and method of fabricating the same |
US9197027B2 (en) | 2012-07-05 | 2015-11-24 | C2C Link Corporation | Method for making laser module |
JP5592444B2 (ja) * | 2012-07-27 | 2014-09-17 | シーツーシー リンク コーポレーション | レーザーモジュールの製造方法 |
WO2015039349A1 (zh) * | 2013-09-23 | 2015-03-26 | 中国科学院光电研究院 | 大口径均匀放大激光模块 |
JPWO2019012642A1 (ja) * | 2017-07-13 | 2020-05-07 | ギガフォトン株式会社 | レーザシステム |
EP3496215A1 (en) * | 2017-12-08 | 2019-06-12 | Csir | A controllable laser amplifier apparatus and method |
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JP3636805B2 (ja) * | 1996-01-29 | 2005-04-06 | テルモ株式会社 | 波長連続可変レーザ装置 |
JP2002134817A (ja) * | 2000-10-26 | 2002-05-10 | Fanuc Ltd | Ld励起スラブ型固体レーザ発生装置 |
JP2002164596A (ja) * | 2000-11-24 | 2002-06-07 | Toshiba Corp | 固体レーザ装置およびレーザ加工装置 |
JP3969980B2 (ja) * | 2001-09-06 | 2007-09-05 | 三菱重工業株式会社 | 固体レーザーのレンズ効果矯正装置、及び、そのレンズ効果矯正方法 |
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