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    • 8. 发明申请
    • DIFFERENTIAL EXCITATION SPECTROSCOPY
    • 差异激发光谱
    • US20150069258A1
    • 2015-03-12
    • US14473796
    • 2014-08-29
    • Eugene W. ButlerTimothy M. StratmanBoyd V. HunterPaul HarrisonJason M. Cox
    • Eugene W. ButlerTimothy M. StratmanBoyd V. HunterPaul HarrisonJason M. Cox
    • G01N21/62G01N22/00G01N21/27
    • G01N21/35G01N21/031G01N21/27G01N21/3581G01N21/636G01N22/00G01N2021/3125
    • A new technique which uses a pump-probe methodology to place a molecule into one or more excited rotational and/or vibrational states. By evaluating spectral changes due to at least one discrete frequency of pump photons a multi-dimensional characterization of the molecule's excited state energy level results. This multi-dimensional characterization typically involves evaluating the changes between excited and unexcited state measurements. The differential nature of the evaluation makes the technique self-referencing and solves problems common to many spectroscopic techniques. The multi-dimensionality of the technique provides high specificity and immunity to interferents. The preferred embodiments involve excitation by using photons suited to pumping the rotational states and evaluating the effects by probing the energy levels of one of more vibrational states. The technique is capable of detecting bulk and trace concentrations of a molecule in gas, liquid and solid phases, both in pure form and in the presence of other molecules.
    • 一种使用泵浦探针方法将分子置于一个或多个激发的旋转和/或振动状态的新技术。 通过评估由于至少一个离散频率的泵浦光子的光谱变化,可以得到分子激发态能级的多维表征。 这种多维表征通常包括评估激发态和不精确状态测量之间的变化。 评估的差异性使得技术自我参照并且解决了许多光谱技术常见的问题。 该技术的多维度为干扰物提供了高度的特异性和免疫性。 优选实施例涉及通过使用适于泵送旋转状态的光子并通过探测更多振动状态之一的能量水平来评估效果来激发。 该技术能够检测气体,液体和固相中分子的体积和痕量浓度,无论是纯形式还是在其它分子存在下。