Terahertz modulation spectrometer
    6.
    发明申请
    Terahertz modulation spectrometer 失效
    太赫兹调制光谱仪

    公开(公告)号:US20050162658A1

    公开(公告)日:2005-07-28

    申请号:US10764036

    申请日:2004-01-23

    Applicant: David Pepper

    Inventor: David Pepper

    CPC classification number: G01J3/4338 G01N21/3581

    Abstract: A method and apparatus for detecting spectral properties of a sample are disclosed. Electromagnetic radiation in the Terahertz range emitted from a first laser source is modulated and combined with electromagnetic radiation emitted from a second laser source. The frequency spectrum of the combined signal comprises sidebands which can be tuned to resonate with the frequency spectrum of the sample. Tuning of the sidebands is obtained by tuning the first laser source, the second laser source, or the modulation frequency.

    Abstract translation: 公开了一种用于检测样品的光谱特性的方法和装置。 从第一激光源发射的太赫兹范围内的电磁辐射被调制并与从第二激光源发射的电磁辐射组合。 组合信号的频谱包括可以被调谐以与样本的频谱谐振的边带。 通过调谐第一激光源,第二激光源或调制频率来获得边带的调谐。

    Time-reversed photoacoustic system and uses thereof
    10.
    发明申请
    Time-reversed photoacoustic system and uses thereof 失效
    时间反转光声系统及其用途

    公开(公告)号:US20050210982A1

    公开(公告)日:2005-09-29

    申请号:US10809237

    申请日:2004-03-24

    CPC classification number: G01H9/00

    Abstract: A remote mass is excited with one or more beams, and the surface vibrations of the excited mass are detected with one or more laser vibrometers. Each vibrometer generates a signal indicative of the surface vibrations which is stored, reversed in time, and applied to modulate an exciter beam that is then impinged onto the mass.

    Abstract translation: 用一个或多个梁激发远程质量块,并用一个或多个激光振动计检测激发体的表面振动。 每个振动计产生指示表面振动的信号,其被存储,及时反转,并且用于调制激发器束,该激发器束然后撞击到质量块上。

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