Recent noteworthy advancements in the field of incoherent digital holography (the production of 3D images) include optical scanning holography and Fresnel incoherent correlation holography (FINCH) techniques.1, 2 The latter acts as a single channel incoherent interferometer (a device that splits light into two beams and recombines them to produce an interference pattern) and does not require an...

A comparison of algorithms for depth-of-field extension in the particular field of digital holographic microscopy is presented. Using the reconstruction properties of holography, a simple 3D reconstruction method from a single hologram is deducted. ©2009 Optical Society of America OCIS codes: (090.1995) Digital holography; (100.6890) Three-dimensional image processing; (180.0180) Microscopy

We report femtosecond optical signal processing by using second-order spectral holography. Enhanced secondorder diffraction from a thermoplastic plate makes possible new signal-processing operations not possible with first-order holography. Experiments resulting in output waveforms equal to the autoconvolution function of the input waveform are described, and the possibility of optical signals ...

Holography deals with processes involving the transformation of waves by interference structures that are formed when coherent electromagnetic waves interact with matter (Andreeva, 2002). As an optical technique it was introduced in the seminal works of Gabor, Leith, Denisyuk and others in the 1960’s (Benton, 2005). By succeeding to reconstruct the complete wave (full amplitude and phase inform...

We develop the relation between de Sitter holography and inflation in detail with particular attention to cosmic density perturbations. We set up the Hamilton-Jacobi formalism to present a systematic treatment of the logarithmic corrections to a scale invariant spectrum. Our computations can be interpreted without reference to holography, as strong infra-red effects in gravity. This point of vi...

Quantitative imaging and measurement of cell–substrate surface deformation by digital holography Xiao Yu a , Michael Cross b , Changgeng Liu a , David C. Clark a , Donald T. Haynie b & Myung K. Kim a a Digital Holography and Microscopy Laboratory, Department of Physics, University of South Florida, Tampa, FL 33620, USA b Nanomedicine and Nanobiotechnology Laboratory, Department of Physics, Univ...

Conventional methods of quadrature phase-shifting holography require two holograms and either intensity distribution of the reference wave or that of the object wave to reconstruct an original object without the zero order and the twin-image noise in an on-axis holographic recording setup. We present a technique called two-step-only quadrature phase-shifting holography in which solely two quadr...

We investigate relevant deformation and renormalization group flow in a defect conformal field theory from the point of view of holography. We construct a supersymmetric D5brane solution which represents an RG flow, by deforming anAdS4×S brane inAdS5×S. Our new solution corresponds to the mass deformation of the defect CFT. We also propose a candidate of g-function in the context of holography,...

Holography suggests a considerable reduction of degrees of freedom in theories with gravity. However it seems to be difficult to understand how holography could be realized in a closed re–contracting universe. In this letter we claim that a scenario which achieves that goal will eliminate all spatial degrees of freedom. This would require a different concept of quantum mechanics and would imply...