A new method for resolution control in numerical reconstruction of digital holography is proposed. The wave field on a tilted or vertical plane can be reconstructed without being subject to the minimum object-to-hologram distance requirement, and the pixel resolution can be easily controlled by adjusting the position of a transitional plane. The proposed method solves the problem of pixel resol...

We consider technical approaches to the problem of making 3-D images of large (>10 μm) life-science samples with about 10 nm resolution . We find no existing methods and discuss the possibility of using soft x-ray diffractive techniques especially holography. We propose a new form of Fourier transform x-ray holography using a reference object consisting of an array of small pinholes formed by e...

We present multiple-image encryption (MIE) based on compressive holography. In the encryption, a holographic technique is employed to record multiple images simultaneously to form a hologram. The two-dimensional Fourier data of the hologram are then compressed by nonuniform sampling, which gives rise to compressive encryption. Decryption of individual images is cast into a minimization problem....

Fourier-domain holography (FDH) has several advantages over image-domain holography for optical coherence imaging of tissue. Writing the hologram in the Fourier plane significantly reduces background arising from reference light scattered from the photorefractive holographic film. The ability to use FDH is enhanced by the use of a diffuse target, such as scattering tissue, rather than specular ...

Abstract: Inverse imaging is a versatile technique for sectional image reconstruction in optical scanning holography. However, the matrix computation involved in the iterative process imposes a significant constraint on the size of the images. In this work, we develop a fast iterative method that circumvents the problem by taking advantage of the structures in the matrices. Experimental results...

The basical problems related to the application of chalcogenide vitreous semiconductor layers (mainly of As-S-Se compositions) for holography and technology of the production of different holographic optical elements are considered. The mechanisms of light sensitivity and characteristics of such media were studied. Complex investigations of the HOE relief formation was carried out and the facto...

We show that higher dimensional models (brane worlds) in which the scale of quantum gravity M∗ is much smaller than the apparent scale MP ∼ 1019 GeV violate the covariant entropy bound arising from holography. The thermodynamic entropies of astrophysical black holes and sub-horizon volumes during big bang nucleosynthesis exceed the relevant bounds unless M∗ > 10 (4−6) TeV, so a hierarchy relati...

We study properties of the minimal cross section of entanglement wedge which connects two disconnected subsystems in holography. In particular we focus on various inequalities which are satisfied by this quantity. They suggest that it is a holographic counterpart of the quantity called entanglement of purification, which measures a bipartite correlation in a given mixed state. We give a heurist...

We propose and develop a new way for nonscanning coherent anti-Stokes Raman scattering (CARS) imaging by using CARS holography, which can capture, at a single shot, both the amplitude and the phase of a coherent Raman image. It hence allows for chemically selective three-dimensional imaging at a laser pulse duration limited speed, which is not possible to achieve by using any of the existing la...

We show that higher dimensional models (brane worlds) in which the scale of quantum gravity M∗ is much smaller than the apparent scale MP ∼ 1019 GeV are in conflict with bounds arising from holography and black hole entropy. The thermodynamic entropy of astrophysical black holes and sub-horizon volumes during big bang nucleosynthesis exceed the relevant bounds unless M∗ > 10 (4−6) TeV, so a hie...