Abstract
3D imaging techniques such as computed tomography, ultrasonography,
and magnetic resonance imaging usually combine many scans computationally.
Here, we report a 3D imaging approach using an optical-laser diffraction
microscope with two different wavelength lasers in the same orientation. A
double-layered sample constructed of silica spheres is used for coherent
diffraction imaging with two lasers at 543 and 432 nm. The diffraction
patterns obtained using a planar detector at a high numerical aperture are
projected onto the Ewald spheres. 3D images of the double-layered sample
are successfully reconstructed from the two-color spherical diffraction
patterns.
© 2016 Chinese Laser Press
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