Optics: measuring and testing – Of light reflection
Reexamination Certificate
2005-08-23
2005-08-23
Smith, Zandra V. (Department: 2877)
Optics: measuring and testing
Of light reflection
C356S128000, C356S369000, C438S016000, C427S010000
Reexamination Certificate
active
06934031
ABSTRACT:
A method for calculating the refractive index and the extinction coefficient for materials relates the physical parameters being calculated to the scattering caused by interband states in the material using a model which includes a quantum mechanical transition equation for transitions between valence and/or conduction bands and interband states of the material. The method can be used for material engineering, process control for processes affecting the interband states in the material, and in estimation of the amount of interband states which have been introduced into a material as a result of such a process. Apparatus for implementing the method are also disclosed.
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Antonelli Terry Stout & Kraus LLP
Rudolph Technologies, Inc.
Smith Zandra V.
Stock, Jr. Gordon J.
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