WANG Fu-sheng, TAN Jiu-bin . Methods of high resolution optical measurement for surface profile[J]. Editorial Office of Optics and Precision Engineering, 2000,(4): 309-315
WANG Fu-sheng, TAN Jiu-bin . Methods of high resolution optical measurement for surface profile[J]. Editorial Office of Optics and Precision Engineering, 2000,(4): 309-315DOI:
Methods of high resolution optical measurement for surface profile
The methods of optical measurement for surface profiles with high resolution even sub nanometer are presented generally. In the paper
three optical methods for measuring surface profile
optical probe
interferometric method and near-field optics method
are mainly described. Optical probes include scanning confocal microscopy and defocus error detection. Interferometric methods include TOPO interferometric profilometer
Nomarski microscope
Heterodyne profilometry
double focus profilometer and coaxial profilometer. Near field optics methods include scanning near-field optical microscopy and photo scanning optical microscopy. By reviewing and contrasting the principles
characteristics and problems with these methods
the trends of high resolution optical measurement for surface profiles are described.
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references
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