JP2013113623A - 誘導ラマン散乱計測装置 - Google Patents
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Abstract
【解決手段】誘導ラマン散乱計測装置は、第1および第2の光をそれぞれ生成する第1および第2の光生成手段2と、第1および第2の光を合成して試料8に照射する照射光学系7と、誘導ラマン散乱を検出する検出手段30とを有する。第1の光生成手段は、入射光を光周波数に応じて異なる方向に分離する光分散素子125および第1の光源からの光を光分散素子に導く導光光学系に含まれる光学素子122のうち少なくとも一方の素子を駆動して入射光の光分散素子への入射角を変化させ、上記異なる方向に分離した光のうち一部を抽出することにより第1の光の光周波数を可変とする。第2の光生成手段は、互いに異なる光周波数を有する複数の第2の光を生成する。複数の第2の光のそれぞれの光周波数に対して、第1の光の光周波数を変化させることでラマンスペクトルを計測する。
【選択図】図1
Description
ここで、光周波数ωp1,ωp2,ωp3,ωp4の相互間(4つの第2のパルス光間の光周波数)の差である周波数ピッチをWPとするとき、第1のパルス光の光周波数の可変幅(スキャン幅)WSは、WP以上とすることが望ましい。
また、第2のパルス生成部は、実施例1,2において説明した高調波同期法に限らず、 強度変調器を用いた構成を有してもよい。
以上説明した各実施例は代表的な例にすぎず、本発明の実施に際しては、各実施例に対して種々の変形や変更が可能である。
2 第2のパルス光生成部
6 合波ミラー
8 試料
10 色フィルタ
12 波長可変バンドパスフィルタ
Claims (4)
- 第1の光を生成する第1の光生成手段と、
前記第1の光とは異なる光周波数を有する第2の光を生成する第2の光生成手段と、
前記第1の光と前記第2の光を合成して試料に照射する照射光学系と、
前記第1の光と前記第2の光が前記試料に照射されることで生じた誘導ラマン散乱を検出する検出手段とを有し、
前記第1の光生成手段は、入射光を光周波数に応じて異なる方向に分離する光分散素子と、第1の光源からの光を前記光分散素子に導く導光光学系とを有し、前記光分散素子および前記導光光学系に含まれる光学素子のうち少なくとも一方の素子を駆動して前記入射光の前記光分散素子への入射角を変化させ、前記異なる方向に分離された光のうちの一部を抽出することにより前記第1の光の光周波数を可変とし、
前記第2の光生成手段は、少なくとも1つの第2の光源からの光を用いて、互いに異なる光周波数を有する複数の前記第2の光を生成し、
前記複数の第2の光のそれぞれの光周波数に対して、前記第1の光の光周波数を変化させることでラマンスペクトルを計測することを特徴とする誘導ラマン散乱計測装置。 - 前記光分散素子は、回折格子であることを特徴とする請求項1に記載の誘導ラマン散乱計測装置。
- 前記第2の光生成手段は、1つの前記第2の光源からの光の光周波数帯域を広げる高非線形ファイバーと、該高非線形ファイバーからの光のうち互いに光周波数が異なる複数の光成分の高調波をそれぞれ発生させる複数の高調波発生素子とを有し、前記複数の高調波を用いて前記複数の第2の光を生成することを特徴とする請求項1または2に記載の誘導ラマン散乱計測装置。
- 前記複数の第2光間の光周波数の差をWPとするとき、
前記第1の光の光周波数の可変幅がWP以上であることを特徴とする請求項1から3のいずれか1項に記載の誘導ラマン散乱計測装置。
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JP2011257894A JP5697584B2 (ja) | 2011-11-25 | 2011-11-25 | 誘導ラマン散乱計測装置および誘導ラマン散乱計測方法 |
CN201210472424.9A CN103134788B (zh) | 2011-11-25 | 2012-11-20 | 受激拉曼散射测量装置 |
US13/683,320 US9207183B2 (en) | 2011-11-25 | 2012-11-21 | Stimulated raman scattering measurement apparatus |
EP12193755.1A EP2597438A1 (en) | 2011-11-25 | 2012-11-22 | Stimulated raman scattering measurement apparatus |
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JP2011257894A JP5697584B2 (ja) | 2011-11-25 | 2011-11-25 | 誘導ラマン散乱計測装置および誘導ラマン散乱計測方法 |
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JP2014237976A Division JP5917664B2 (ja) | 2014-11-25 | 2014-11-25 | 誘導ラマン散乱計測装置および誘導ラマン散乱計測方法 |
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JP2013113623A true JP2013113623A (ja) | 2013-06-10 |
JP2013113623A5 JP2013113623A5 (ja) | 2014-05-29 |
JP5697584B2 JP5697584B2 (ja) | 2015-04-08 |
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US (1) | US9207183B2 (ja) |
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2011089987A (ja) * | 2009-10-22 | 2011-05-06 | Panalytical Bv | X線回折および蛍光 |
JP2014173973A (ja) * | 2013-03-08 | 2014-09-22 | Canon Inc | ラマン散乱計測装置およびラマン散乱計測方法 |
JP2015031919A (ja) * | 2013-08-06 | 2015-02-16 | キヤノン株式会社 | 情報取得装置 |
WO2015136939A1 (en) * | 2014-03-14 | 2015-09-17 | Canon Kabushiki Kaisha | Raman scattering measurement apparatus and raman scattering measurement method |
WO2016079845A1 (ja) * | 2014-11-20 | 2016-05-26 | キヤノン株式会社 | ノイズ低減装置及びそれを備える検出装置 |
JP2017116300A (ja) * | 2015-12-21 | 2017-06-29 | キヤノン株式会社 | 光パルス列同期装置、光学顕微鏡及び光パルス列同期方法 |
WO2017138606A1 (ja) * | 2016-02-09 | 2017-08-17 | 国立大学法人東京大学 | 誘導ラマン散乱顕微鏡装置および誘導ラマン散乱計測方法 |
JPWO2020245999A1 (ja) * | 2019-06-06 | 2020-12-10 |
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EP3030870B1 (en) | 2013-08-07 | 2021-04-07 | Wayne State University | Hand-held micro-raman based detection instrument and method of detection |
FR3013855A1 (fr) * | 2013-11-28 | 2015-05-29 | Fastlite | Generateur et procede pour la generation d'impulsions optiques de duree inferieure au cycle optique dans l'infrarouge. |
WO2015145429A1 (en) | 2014-03-24 | 2015-10-01 | Optiqgain Ltd. | A system for a stimulated raman scattering (srs) spectrophotometer and a method of use thereof |
CN105098599B (zh) * | 2014-05-23 | 2018-12-07 | 上海市刑事科学技术研究院 | 六波长现场物证激光探测仪 |
CN106840453B (zh) * | 2017-02-10 | 2019-06-28 | 武汉理工大学 | 一种蓝宝石掺杂晶体激光高温传感系统及方法 |
CN108323182A (zh) * | 2018-01-02 | 2018-07-24 | 深圳达闼科技控股有限公司 | 一种光谱测量系统 |
US11698304B2 (en) | 2019-02-15 | 2023-07-11 | Wayne State University | Apparatuses, systems, and methods for detecting materials based on Raman spectroscopy |
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- 2012-11-20 CN CN201210472424.9A patent/CN103134788B/zh not_active Expired - Fee Related
- 2012-11-21 US US13/683,320 patent/US9207183B2/en not_active Expired - Fee Related
- 2012-11-22 EP EP12193755.1A patent/EP2597438A1/en not_active Withdrawn
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US20130135615A1 (en) | 2013-05-30 |
EP2597438A1 (en) | 2013-05-29 |
US9207183B2 (en) | 2015-12-08 |
CN103134788A (zh) | 2013-06-05 |
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CN103134788B (zh) | 2015-05-13 |
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