DETERMINATION OF REFRACTIVE INDEX AND THICKNESS OF THIN LAYERS

    公开(公告)号:AU5147590A

    公开(公告)日:1990-09-27

    申请号:AU5147590

    申请日:1990-03-20

    Applicant: BASF AG

    Abstract: The invention relates to a method for determining the refractive index and layer thickness of ultrathin layers. In order to determine the refractive index and/or thickness of layers having layer thicknesses 1 mu m, layers which are applied to a solid substrate are recorded by means of surface/plasmon microscopy as a function of the angle of incidence of the irradiating laser beam. It is possible in this way to determine layer thicknesses with a vertical resolution >/= 0.1 nm in conjunction with simultaneous lateral resolution >/= 5 mu m.

    4.
    发明专利
    未知

    公开(公告)号:FI902197A0

    公开(公告)日:1990-05-02

    申请号:FI902197

    申请日:1990-05-02

    Applicant: BASF AG

    Abstract: The invention relates to a procedure for the investigation of the physical properties of thin layers using polarised light to irradiate the layer to be investigated and guiding the reflected or transmitted light onto an imaging system. Optical waveguide modes are excited in the layer to be investigated by irradiation with the polarised light.

    5.
    发明专利
    未知

    公开(公告)号:FI901417A0

    公开(公告)日:1990-03-21

    申请号:FI901417

    申请日:1990-03-21

    Applicant: BASF AG

    Abstract: The invention relates to a method for examination of surface structures which differ with respect to refractive index and/or height modulation of the surface, these surface structures being brought into a surface/plasmon field and scanned by means of surface/plasmon microscopy.

    DETERMINATION OF REFRACTIVE INDEX AND THICKNESS OF THIN LAYERS

    公开(公告)号:AU622992B2

    公开(公告)日:1992-04-30

    申请号:AU5147590

    申请日:1990-03-20

    Applicant: BASF AG

    Abstract: The invention relates to a method for determining the refractive index and layer thickness of ultrathin layers. In order to determine the refractive index and/or thickness of layers having layer thicknesses 1 mu m, layers which are applied to a solid substrate are recorded by means of surface/plasmon microscopy as a function of the angle of incidence of the irradiating laser beam. It is possible in this way to determine layer thicknesses with a vertical resolution >/= 0.1 nm in conjunction with simultaneous lateral resolution >/= 5 mu m.

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