JP2009527775A - 気体試料を分析するための中間irレーザ機器およびその使用方法 - Google Patents
気体試料を分析するための中間irレーザ機器およびその使用方法 Download PDFInfo
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Abstract
Description
本特許出願は、2006年2月17日に出願された米国特許仮出願第60/774,952号および2006年2月23日に出願された米国特許仮出願60/776,242号による優先権を主張するものであり、また、2001年9月20日に出願された米国特許仮出願第60/323,551号による優先権を主張する、2002年9月19日に出願され、米国特許第6,960,486号として発行された米国特許出願第10/247,272号の分割出願である、2005年5月27日に出願された米国特許出願第11/140,271号の一部継続出願である。これらの参照文献はそれぞれ参照によって本明細書で組み込まれる。
本発明は量子エレクトロニクスの分野、より具体的にはレーザ技術の基礎に関し、波長可変中間赤外(中間IR)固体レーザを開発する目的に本発明を使用することができる。
される。
Claims (18)
- 広帯域波長可変狭線幅中間IRレーザ源を有するオプティカルノーズシステムであって、前記レーザ源がモジュール構造を有し、前記レーザ源が、
a)レーザ出力を有するTM2+:II-VIパワー増幅器を備えた単一縦モード広帯域波長可変TM2+:II-VI主発振器を含み、TM2+が、Cr2+、Fe2+、Co2+およびNi2+からなるグループから選択された遷移金属イオンを表し、II-VIが、ZnS、ZnSe、CdS、CdSe、ZnTe、CdTeおよびこれらの混合物を表す波長可変シードレーザユニットと、
b)レーザ出力を有する単一周波数高エネルギーQスイッチレーザを含むパルスポンプレーザユニットと、
c)前記パルスポンプレーザユニットによってポンピングされ、前記波長可変シードレーザユニットによってシーディングされる、約2から20μmの範囲にわたって選択的に可変の中間IR出力を有する光パラメトリック発生器-増幅器と
を含むオプティカルノーズシステム。 - 前記光パラメトリック発生器-増幅器から光入力を受け取る、気体試料を分析するための光音響セルをさらに含む、請求項1に記載のオプティカルノーズシステム。
- 前記パルスポンプレーザと前記波長可変シードレーザが、単一のダイオード、ダイオードアレイまたはファイバレーザによってポンピングされる、請求項1に記載のオプティカルノーズシステム。
- 前記シードレーザが、共振器長(cavity length)の動的補正機能を備えたリトローまたはリットマン分散共振器(cavity)からなる、モードホッピングのない広帯域波長可変単一周波数レーザである、請求項3に記載のオプティカルノーズシステム。
- 共振器長(cavity length)の補正が圧電変換器によって制御される、請求項4に記載のオプティカルノーズシステム。
- マスタ制御コンピュータと、波長ロッキング機能を備えた単一周波数ポンプパルスレーザユニットと、周波数を安定させるためのフィードバックシステムを備えた単一周波数波長可変シードレーザユニットと、光パラメトリック発生器-増幅器とをさらに含み、前記波長可変シードレーザ共振器(cavity)の長さが、圧電コントローラと、前記波長可変レーザ共振器(cavity)の回折格子またはミラーのステップモータに接続された格子ステップモータドライバと、前記マスタ制御コンピュータからの入力に応じて前記格子ステッパモータドライバに信号を送るように動作可能に接続された波長コントローラとによって制御される、請求項5に記載のオプティカルノーズシステム。
- 前記光パラメトリック発生器-増幅器ユニットが差周波数発生デバイスであり、前記波長可変シードレーザユニットからのレーザ放射と高パワーポンプレーザユニットからのレーザ放射が、ZGP、CdSeおよびGaSeからなるグループから選択された非線形結晶の中で混合される、請求項6に記載のオプティカルノーズシステム。
- 前記非線形結晶の方向が、前記波長コントローラからの制御信号を受け取る回転ステップモータによって制御される、請求項7に記載のオプティカルノーズシステム。
- 微量元素の光検出方法であって、分子試料を採取して光学セルに入れるステップと、波長可変レーザ放射を使用して前記セルの中の前記分子を励起させるステップと、前記励起によって生じた特性吸収スペクトルを記録するステップと、前記吸収スペクトルを、コンピュータベースのスペクトル認識アルゴリズムに送るステップと、前記セルの中に存在する前記分子を同定し、定量するステップとを含む方法。
- 光音響気体セルの中に含まれる気体試料を分析する方法であって、
a)パルスポンプレーザおよび波長可変シードレーザをポンピングし、前記レーザをレーザ発振させるステップと、
b)前記パルスポンプレーザの放射および前記シードレーザの放射によって光パラメトリック発生器-光パラメトリック増幅器ユニット(OPG-OPA)をポンピングし、波長可変中間IR信号およびアイドラ波を発生させるステップと、
c)前記OPG-OPAからの波長可変レーザ放射を前記気体セルへの導き、吸収スペクトルを測定するステップと、
d)前記測定された吸収スペクトルを前記気体試料の既知の吸収スペクトルと比較して、前記気体試料の組成を決定するステップと
を含む方法。 - ステップa)がさらに、
前記シードレーザおよび前記パルスポンプレーザをTmファイバポンプレーザによってポンピングすること
を含む、請求項10に記載の方法。 - ステップa)がさらに、
前記シードレーザおよび前記パルスポンプレーザErファイバポンプレーザによってポンピングすること
を含む、請求項10に記載の方法。 - ステップa)がさらに、
Qスイッチホルミウムレーザ放射を前記OPG-OPAのポンプ源として発生させること
を含む、請求項10に記載の方法。 - ステップa)がさらに、
Qスイッチエルビウムレーザ放射を前記OPG-OPAのポンプ源として発生させること
を含む、請求項10に記載の方法。 - ステップa)がさらに、
Cr2+:II-VI主発振器およびCr2+:II-VIパワー増幅器を使用して単一周波数波長可変Cr2+:II-VIレーザ放射を発生させること
を含み、II-VIがZn、Se、CdSe、ZnSおよびこれらの混合物を表し、ステップa)がさらに、
前記Cr2+:II-VI広帯域波長可変シードレーザ放射を前記OPG-OPAに伝送すること
を含む、請求項10に記載の方法。 - 前記ステップがさらに、
2〜3.5μmのスペクトル範囲にわたって連続的に波長可変のCr2+:II-VI広帯域波長可変シードレーザ放射を伝送すること
を含む、請求項15に記載の方法。 - ステップb)がさらに、
2〜10μmの中間IRスペクトル範囲にわたる放射を発生させるZGP非線形結晶を前記OPG-OPAの中に配置するステップと、
前記ZGP非線形結晶の位置をZGPステッピングモータによって回転させるステップと、
前記ZGPステッピングモータに接続された波長コントローラを提供するステップと、
その時点の波長に対して必要な前記ZGPの回転角を計算するステップと、
計算に従って前記ZGPを回転させるステップと、
を含む、請求項10に記載の方法。 - 前記光パラメトリック発生器-増幅器ユニットが差周波数発生デバイスであり、前記波長可変シードレーザユニットからのレーザ放射と高パワーポンプレーザユニットからのレーザ放射が、ZGP、CdSeおよびGaSeからなるグループから選択された非線形結晶の中で混合される、請求項1に記載のオプティカルノーズシステム。
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US11/375,601 US7606274B2 (en) | 2001-09-20 | 2006-03-13 | Mid-IR instrument for analyzing a gaseous sample and method for using the same |
PCT/US2007/004102 WO2007098034A2 (en) | 2006-02-17 | 2007-02-13 | Mid-ir laser instrument for analyzing a gaseous sample and method for using the same |
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JP7066073B1 (ja) * | 2021-06-30 | 2022-05-12 | 三菱電機株式会社 | レーザ装置およびレーザ加工装置 |
US11958128B2 (en) | 2021-06-30 | 2024-04-16 | Mitsubishi Electric Corporation | Laser apparatus and laser machining apparatus |
WO2023140339A1 (ja) * | 2022-01-21 | 2023-07-27 | 国立研究開発法人理化学研究所 | 分光システムおよび分光方法 |
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CA2641240C (en) | 2015-10-27 |
JP5137855B2 (ja) | 2013-02-06 |
US8233508B2 (en) | 2012-07-31 |
EP1997198A4 (en) | 2011-01-19 |
EP1997198B1 (en) | 2012-06-13 |
WO2007098034A3 (en) | 2008-06-12 |
AU2007217879A1 (en) | 2007-08-30 |
EP1997198A2 (en) | 2008-12-03 |
WO2007098034A2 (en) | 2007-08-30 |
AU2007217879B2 (en) | 2013-02-07 |
US20070064748A1 (en) | 2007-03-22 |
CA2641240A1 (en) | 2007-08-30 |
US7606274B2 (en) | 2009-10-20 |
US20100246610A1 (en) | 2010-09-30 |
NZ571254A (en) | 2012-01-12 |
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