Cavity ring down arrangement for non-cavity filling samples
    3.
    发明授权
    Cavity ring down arrangement for non-cavity filling samples 有权
    用于非空腔填充样品的腔环排列

    公开(公告)号:US06452680B1

    公开(公告)日:2002-09-17

    申请号:US09497309

    申请日:2000-02-03

    IPC分类号: G01N2100

    CPC分类号: G01J3/42 G01N21/39

    摘要: Method and system for cavity ring down spectroscopic analysis of non-cavity-filling sample. An interface of a sample (gas, liquid, thin film, bulk solid, etc.) is positioned at a Brewster angle relative to a p-wave polarized light beam propagating in an optical cavity so that substantially no light beam energy is lost by reflection at the interface. The light beam cycles one or more times in the cavity for each of a sequence of selected wavelengths, is extracted from the cavity, and is analyzed to determine an absorption spectrum for the sample. The cavity, except for the sample region may be filled with a solid, optionally dielectrically active and optionally having an electrical field applied thereto to vary the solid's refractive index according to the light beam wavelength used.

    摘要翻译: 空腔填充样品的腔环下光谱分析方法与系统。 样品(气体,液体,薄膜,体积固体等)的界面相对于在光腔中传播的p波偏振光束位于布鲁斯特角,使得基本上没有光束能量被反射损失 在界面。 对于所选波长序列中的每一个,光束在空腔中循环一次或多次,从空腔中提取,并且被分析以确定样品的吸收光谱。 除了样品区域之外的空腔可以填充固体,任选地介电活性并且任选地具有施加到其上的电场以根据所使用的光束波长改变固体的折射率。