JP2007501401A - リアルタイム遠隔化学物質検出のためのパラメトリック広帯域光を用いるシステム - Google Patents
リアルタイム遠隔化学物質検出のためのパラメトリック広帯域光を用いるシステム Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/28—Investigating the spectrum
- G01J3/42—Absorption spectrometry; Double beam spectrometry; Flicker spectrometry; Reflection spectrometry
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N2021/1793—Remote sensing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3581—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light using far infrared light; using Terahertz radiation
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- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
Description
102 光源
104 ポンピング波
106 パラメトリック装置
108 広帯域出力
110 遠隔地
112 化学剤
114 分光計
Claims (45)
- 閃光分光法による遠距離化学物質検出システムにおいて、
光源、
パラメトリック装置であって、前記パラメトリック装置の縮退点において前記光源からポンピング波を受信するように構成されたパラメトリック装置、
前記パラメトリック装置によって発生され、遠隔地に送波される、広帯域出力、及び
前記遠隔地から前記広帯域出力を受信し、吸収スペクトルをつくるように動作できる分光計、
を備えることを特徴とするシステム。 - 前記広帯域出力がアイドラー波及び信号波を含むことを特徴とする請求項1に記載のシステム。
- 前記アイドラー波が前記信号波と実質的に等しいことを特徴とする請求項2に記載のシステム。
- 前記広帯域出力は、半値全幅値が広帯域出力中心波長の約5%から約25%である帯域幅または線幅を有することを特徴とする請求項1に記載のシステム。
- 前記広帯域出力は、半値全幅値が広帯域出力中心波長の約10%から約20%である帯域幅または線幅を有することを特徴とする請求項1に記載のシステム。
- 前記広帯域出力は、半値全幅値が200cm−1より広い帯域幅または線幅を有することを特徴とする請求項1に記載のシステム。
- 前記広帯域出力は、半値全幅値が300cm−1より広い帯域幅または線幅を有することを特徴とする請求項1に記載のシステム。
- 前記ポンピング波が前記広帯域出力中心波長の約1/2に等しい中心波長を有することを特徴とする請求項5に記載のシステム。
- 前記アイドラー波及び前記信号波の内の1つの中心波長が約8μmから約12μmの間にあることを特徴とする請求項2に記載のシステム。
- 前記アイドラー波及び前記信号波の内の1つの中心波長が約3μmから約5μmの間にあることを特徴とする請求項2に記載のシステム。
- 前記分光計が、前記広帯域出力を受信し、前記広帯域出力が前記遠隔地から受信された後に前記広帯域出力を複数のサブバンドに分散させるように構成された光分散素子を備えることを特徴とする請求項1に記載のシステム。
- 前記分光計が前記サブバンドを受信するように構成された検出器アレイを備え、前記検出器アレイが前記サブバンドから多重吸収スペクトルをつくるように動作できることを特徴とする請求項11に記載のシステム。
- 前記検出器アレイが1Dアレイを含むことを特徴とする請求項12に記載のシステム。
- 前記検出器アレイが128の検出器素子を有することを特徴とする請求項13に記載のシステム。
- 前記検出器アレイが256の検出器素子を有することを特徴とする請求項13に記載のシステム。
- 前記検出器アレイが2Dアレイを含むことを特徴とする請求項12に記載のシステム。
- 前記検出器素子が128×128構成に構成されることを特徴とする請求項16に記載のシステム。
- 既知の化学剤に対応する整合フィルタをさらに備えることを特徴とする請求項12に記載のシステム。
- 前記ポンピング波が約4μmから約5μmの間の波長を有することを特徴とする請求項1に記載のシステム。
- 前記パラメトリック装置がコリメート光学系または透過光学系を有することを特徴とする請求項1に記載のシステム。
- 前記パラメトリック装置がパラメトリック光発生器を有することを特徴とする請求項1に記載のシステム。
- 前記パラメトリック装置がパラメトリック光発振器を有することを特徴とする請求項1に記載のシステム。
- 前記光源が一酸化炭素ガスレーザまたは二酸化炭素ガスレーザを有することを特徴とする請求項1に記載のシステム。
- 前記光源がダイオードレーザを有することを特徴とする請求項1に記載のシステム。
- 前記光源が4.5μmの波長を有するポンピング波を発生する量子多段ダイオードレーザを有することを特徴とする請求項24に記載のシステム。
- 前記光源がAlInAs/InGaAs量子多段ダイオードレーザを有することを特徴とする請求項24に記載のシステム。
- 前記パラメトリック装置がタイプI構成に構成されていることを特徴とする請求項1に記載のシステム。
- 前記パラメトリック装置がタイプII構成に構成されていることを特徴とする請求項1に記載のシステム。
- 前記パラメトリック装置がヒ化カドミウムゲルマニウム(CdGeAs2)でつくられることを特徴とする請求項1に記載のシステム。
- 前記パラメトリック装置がセレン化銀ガリウム(AgGaSe2)でつくられることを特徴とする請求項1に記載のシステム。
- 前記パラメトリック装置が周期的双晶ヒ化ガリウム(PTGaAs)でつくられることを特徴とする請求項1に記載のシステム。
- 前記検出器アレイが量子井戸赤外光検出器(QWIP)を有することを特徴とする請求項12に記載のシステム。
- 遠距離化学物質検出方法において、
縮退点に構成されたパラメトリック装置にポンピング波を供給する工程、
広帯域出力を発生させる工程、
化学剤がある遠隔地に前記広帯域出力を向ける工程、
前記遠隔地からの前記広帯域出力を検出する工程、及び
前記化学剤の化学吸収スペクトルをつくる工程、
を有してなることを特徴とする方法。 - 前記検出する工程が前記広帯域出力を2つまたはそれより多くのサブバンドに分散させる工程をさらに含むことを特徴とする請求項33に記載の方法。
- 前記2つまたはそれより多くのサブバンドのそれぞれの強度を検出する工程をさらに含むことを特徴とする請求項34に記載の方法。
- 前記化学吸収スペクトルをつくる前記工程が前記2つまたはそれより多くのサブバンドの前記強度を多重化する工程を含むことを特徴とする請求項35に記載の方法。
- 前記化学吸収スペクトルを1つまたはそれより多くの既知の吸収スペクトルと比較する工程をさらに含むことを特徴とする請求項33に記載の方法。
- 前記遠隔地における既知の化学物質の存在を判定する工程をさらに含むことを特徴とする請求項33に記載の方法。
- 閃光分光法による化学物質検出システムにおいて、
ポンピング波を発生させる手段、
前記ポンピング波を縮退増幅して、広帯域出力を発生させる手段、
前記広帯域出力を遠隔地に向ける手段、
前記遠隔地からの前記広帯域出力を検出する手段、及び
化学剤を同定する手段、
を備えることを特徴とするシステム。 - 前記同定する手段が化学吸収スペクトルをつくる手段をさらに含むことを特徴とする請求項39に記載のシステム。
- 前記同定する手段が前記広帯域出力を2つまたはそれより多くのサブバンドに分散させる手段を含むことを特徴とする請求項39に記載のシステム。
- 前記同定する手段が前記2つまたはそれより多くのサブバンドのそれぞれの強度を検出する手段をさらに含むことを特徴とする請求項41に記載のシステム。
- 前記同定する手段が前記吸収スペクトルをつくるために前記2つまたはそれより多くのサブバンドの前記強度を多重化する手段をさらに含むことを特徴とする請求項42に記載のシステム。
- 前記同定する手段が前記吸収スペクトルを既知の化学吸収スペクトルと相関させる手段をさらに含むことを特徴とする請求項43に記載のシステム。
- 前記広帯域出力は、半値全幅値が200cm−1より広い帯域幅または線幅を有することを特徴とする請求項39に記載のシステム。
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US10/460,101 US7023545B2 (en) | 2003-06-12 | 2003-06-12 | Chemical identification by flash spectroscopy |
PCT/US2004/016262 WO2004114011A1 (en) | 2003-06-12 | 2004-05-20 | System with an optical parametric broadband light for real-time remote chemical detection |
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US (1) | US7023545B2 (ja) |
EP (1) | EP1639404A1 (ja) |
JP (1) | JP4791363B2 (ja) |
CN (1) | CN100371821C (ja) |
WO (1) | WO2004114011A1 (ja) |
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US20040252300A1 (en) | 2004-12-16 |
WO2004114011A1 (en) | 2004-12-29 |
US7023545B2 (en) | 2006-04-04 |
CN1806201A (zh) | 2006-07-19 |
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