JP2006501481A5 - - Google Patents

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JP2006501481A5
JP2006501481A5 JP2004541968A JP2004541968A JP2006501481A5 JP 2006501481 A5 JP2006501481 A5 JP 2006501481A5 JP 2004541968 A JP2004541968 A JP 2004541968A JP 2004541968 A JP2004541968 A JP 2004541968A JP 2006501481 A5 JP2006501481 A5 JP 2006501481A5
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radiation
inelastically scattered
scattered radiation
chamber
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JP4947900B2 (ja
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Priority claimed from US10/675,884 external-priority patent/US20040142484A1/en
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チャンバーは、関心対象の分子(例えば、特定のヌクレオチド)または関心対象の分子のセット(例えば、ヌクレオチドのセット)の非弾性散乱放射線を共鳴するように設計することができる。一例として、514ナノメーターのアルゴン-イオンレーザーによる励起によって発生する図4に示すストークススペクトル(以下にさらに詳細に考察されている)を考えてみる。一番下のデオキシチミジン一リン酸分子のスペクトルは、約1350 cm-1のストークスラマンシフトに顕著なピークを有する。このシフトは、514ナノメーターの励起波長については、19455cm-1(すなわち、107/514=19455)の励起波長からオフセットされており、約18105 cm-1(すなわち、19455-1350)の実際のストークスラマン波数になる。これは、522ナノメーター(すなわち、107/18105)の波長に相当する。このストークス散乱放射線は、光学的信号を増幅し、検出を改善するために、チャンバー内で共鳴されうる。図2に示す特定のリフレクタは、この552ナノメーターの散乱放射線については、共鳴周波数の最頻値に光線の速度をかけた積の約2分の1を空洞に充填した媒体の屈折率で割り、チャンバー内で共鳴される特定の放射線の周波数で割った距離をおいてもよい。別の例として、チャンバーは、この波長の放射線および他の関心対象の分子の非弾性散乱放射線の波長を共鳴するように設計してもよい。本発明の一態様において、リフレクタ間の所定の距離は、関心対象の複数の分子のラマンスペクトルの顕著なピークに対応する波長の関数である(例えば、図4のピークを参照されたい)。関数は平均、重平均または他の組み合わせ関数であってもよい。

Claims (7)

  1. 以下の段階を含む、試料における複数の関心対象の分子のアイデンティティーを決定する方法;
    少なくとも2つの知られた関心対象の分子に対してストークスラマンシフトを決定する段階;
    共鳴チャンバー内の試料を励起する段階であって、該チャンバーは、リフレクタおよび部分反射リフレクタを含み、少なくとも2つの光線源を有し、
    該少なくとも2つの光線源が2つの方向に照射され、シード放射線が第一の方向を向き、横方向放射線が第2の方向を向き、第1の方向は第2の方向と垂直であり、該横方向放射線は共鳴の方向に対して垂直であり、前記シード放射線および横方向放射線は異なる周波数を有し、該シード放射線が非弾性散乱放射線と同じ周波数であり、
    レフレクタの間の所定の距離が、前記少なくとも2つの知られた関心対象の分子のラマンスペクトルの顕著なピークに対応する波長の加重平均であって、該所定の距離が、チャンバー内で共鳴される放射線の波長の半分の倍数である距離であり、
    それにより選択的に試料から非弾性的に放射線を散乱させる段階;
    非弾性散乱放射線の強度を増幅するために、リフレクタおよび部分反射リフレクタの間の非弾性散乱放射線を共鳴させる段階;
    チャンバーから増幅された非弾性散乱放射線を透過させる段階;
    透過した増幅された非弾性散乱放射線を検出する段階;および
    検出された、透過した増幅された非弾性散乱放射線が、関心対象の少なくとも2つの知られた分子のうちの一つに対応するかどうかを決定する段階。
  2. 前記分離した、透過した増幅された非弾性散乱放射線を検出する段階が、シード放射線の強度に対するゲインを検出する段階を含む、請求項1に記載の方法。
  3. 前記二種類のリフレクタは、共鳴チャンバー内において互いに向かい合って平行に備えられ、共通の光学軸を中心とする、請求項1または2に記載の方法。
  4. 前記二種類のリフレクタが、誘電性多層膜ミラーである、請求項1〜3のいずれかに記載の方法。
  5. 前記誘電性多層膜ミラーが、前記少なくとも2つの関心対象の分子の分離した非弾性散乱放射線の波長に基づく厚さを有する層を含む、請求項4に記載の方法。
  6. 前記分離した非弾性散乱放射線を透過させる段階が、部分反射リフレクタのアウトレットウィンドウを通して、分離した増幅された非弾性散乱放射線を透過する段階を含む、請求項1〜のいずれかに記載の方法。
  7. 前記共鳴チャンバーが、チャンバー内に放射線を透過させ、チャンバーから分離した増幅した非弾性散乱放射線を透過させるための、少なくとも一つのウィンドウを含む、請求項1〜のいずれかに記載の方法。
JP2004541968A 2002-09-30 2003-09-30 分光分析システムおよび方法 Expired - Fee Related JP4947900B2 (ja)

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Application Number Priority Date Filing Date Title
US10/262,349 2002-09-30
US10/262,349 US8088628B2 (en) 2002-09-30 2002-09-30 Stimulated and coherent anti-stokes raman spectroscopic methods for the detection of molecules
US10/675,884 US20040142484A1 (en) 2002-09-30 2003-09-29 Spectroscopic analysis system and method
US10/675,884 2003-09-29
PCT/US2003/030997 WO2004031749A2 (en) 2002-09-30 2003-09-30 Spectroscopic analysis system and method

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JP2006501481A5 true JP2006501481A5 (ja) 2011-09-29
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EP (1) EP1546688A2 (ja)
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CN (1) CN1685217B (ja)
AU (1) AU2003282896A1 (ja)
WO (1) WO2004031749A2 (ja)

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