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Reconstructing the
phase profile
of a light beam is necessary in many applications, such as
optical metrology, adaptive optics, ophthalmology et al. All
phase reconstruction methods are based on phase-to-intensity
transformations that make the light intensity distribution
sensed by a photo detector depend on the phase profile to
reconstruct.
We have suggested to use
an optical system comprising the
spatial filter
known as “phase knife”
to quantitatively
reconstruct the shape of a light beam wavefront (Fig. 1). Such a
phase knife-based sensor has been studied both analytically and
numerically. The corresponding phase reconstruction algorithms
and sensor embodiment schemes have been developed. Some
expedient applications has been suggested for the sensor
developed.
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