Patent ID: 6614532
Filing Date: 2003-09-02
Classification: G01N,G02B

Abstract:
A method of analyzing composition or structure of a thin film or layer by measuring a depth dependent profile of at least one of absorption, photoluminescence, secondary chemi-luminescence, black-body emission and scattering of radiation in the thin film or layer, the method comprising:providing a suitable test material having a depth axis extending through a thin film or layer, said test material being provided with a substantially flat image transfer surface having an orientation substantially parallel to and in proximity to said depth axis; projecting a beam from a source of radiation into said test material along said depth axis thereby causing emission of radiation from said test material through said image transfer surface; and collecting at least part of said emission of radiation transmitted through said image transfer surface to form an image of a depth dependent profile of at least a part of said thin film or layer.