Optical processing of images has received much attention recently. Experimental
breakthroughs have been achieved mainly by studying correlation applications for …

We implement a fully phase encryption system, using fractional Fourier transform to encrypt
and decrypt a 2-D phase image obtained from an amplitude image. The encrypted image is …

This paper briefly reviews the basics of optical Fourier techniques (OFT) and applications for
medical image processing as well as phase contrast imaging of live biological specimens …

In this paper, we implement a fully phase-encrypted memory system using cascaded
extended fractional Fourier transform (FRT). We encrypt and decrypt a two-dimensional …

Membrane-bound or cytosolic light-sensitive proteins, playing a crucial role in energy-and
signal-transduction processes of various photosynthetic microorganisms, have been …

A single-lens optical setup with a nonlinear medium placed in its geometrical focal plane is
used to contrast a phase disturbance. This setup blends the robustness of phase-contrast …

We explore the polarization dependence of the nonlinear response of a planar nematic
liquid crystal cell doped with 1% wt of methyl red dye. The results obtained show that the …

This paper shows that visible-light ptychography can be used to distinguish quantitatively
between healthy and tumorous unstained cells. Advantages of ptychography in comparison …

In this study, we focus on the trapping and self-oscillation of microbubbles in ethanol using a
low-power continuous-wave laser. The microbubble formation is achieved by heating of …

Lenses allow the formation of clear images in homogeneous linear media. Holography is an
alternative imaging method, but its use is limited to cases in which it provides an advantage …