Abstract
A new lensless microscopy method able to recover the complex wavefront
diffracted by a sample from a set of inline recorded holograms is presented.
It is based on a modified Gabor-like setup where a condenser lens and a
spatial light modulator (SLM) are inserted in a classical Gabor
configuration. The condenser lens provides the sample's spectrum at the
system Fourier plane while the SLM allows phase shifting modulation of the
central spot (DC term) of the sample's spectrum. As consequence, the
proposed imaging system recovers the complex amplitude distribution of the
diffracted sample wavefront without an additional reference beam.
Experimental results validate the proposed method and expand the Gabor
method applicability beyond cases of weak diffraction assumption.
© 2010 IEEE
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