Phase effects in double-focus and double-aperture interference microscopy
Applied Optics, Vol. 39, Issue 13, pp. 2159-2166 (2000)
http://dx.doi.org/10.1364/AO.39.002159
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Abstract
Two different optical techniques for surface tracking and linewidth measurement are evaluated. First, an evaluation is made of the performance of a double-focus polarization microscope, based on results from a computer model and from experimental measurements. The assessment shows that a phase curvature effect makes the operation of this configuration impractical as a surface tracking device and linewidth measurement system. An alternative arrangement of using a double aperture is evaluated. The phase curvature effect is reduced in this type of microscope. A practical optical arrangement to implement a double-aperture microscope is given.
© 2000 Optical Society of America
[Optical Society of America ]
OCIS Codes
(120.6650) Instrumentation, measurement, and metrology : Surface measurements, figure
(180.3170) Microscopy : Interference microscopy
Citation
Sarah A. Barman, John G. Walker, John W. Nunn, Nicholas P. Turner, and Michael J. Downs, "Phase effects in double-focus and double-aperture interference microscopy," Appl. Opt. 39, 2159-2166 (2000)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-39-13-2159
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