We describe and demonstrate a volume holographic storage system in which a phase-conjugate object beam is reconstructed by the same reference beam that was used for recording. An intermediate hologram is used as a temporary buffer, recorded with its own reference beam and the data-bearing object beam. Reading this buffer hologram with the phase conjugate of its reference beam reconstructs the p...

We present a holographic theory of human memory. According to the theory, a subject's vocabulary resides in a dynamic distributed representation-a hologram. Studying or recalling a word alters both the existing representation of that word in the hologram and all words associated with it. Recall is always prompted by a recall cue (either a start instruction or the word just recalled). Order of r...

A marbled image is generated by performing marbling operations on an image. When the marbled image is recovered to the original image, the parameters of the marbling operations should be known in the decoding process. By embedding these into the marbled image, we can eliminate an additional internet transmission. This paper proposes a watermark algorithm for marbled images based on a linear enh...

The worldsheet of a macroscopic fundamental superstring in the Green-Schwarz light-cone gauge is viewed as a possible boundary hologram of the near horizon region of a small black string. For toroidally compactified strings, the hologram has global symmetries of AdS3 ×Sd−1 ×T8−d (d = 3, . . . , 8), only some of which extend to local conformal symmetries. We construct the bulk string theory in d...

We describe a new application of super-resolution image reconstruction to digital holography which is a technique for threedimensional information recording and reconstruction. Digital holography has suffered from the low resolution of CCD sensors, which significantly limits the size of objects that can be recorded. The existing solution to this problem is to use optics to bandlimit the object ...

In no possible world does a time traveler succeed in killing her earlier self before she ever enters a time machine. So if many, many time travelers went back in time trying to kill their unprotected former selves, the time travelers would fail in many strange, “coincidental” ways, slipping on banana peels, killing the wrong victim, and so on. Such cases produce doubts about time travel. How co...

The film shrinkage effect of photopolymeric phase media failed to provide the desired volume holograms for point-to-point optical interconnects. In this paper, we report a new compensation method to physically correct the shrinkage effect resulted from the holographic recording and the post baking. Dupont photopolymer HRF-600X001 is studied. The correction of the Bragg diffraction angle shift o...

This research aimed to investigate the use of fan type hologram, that is considered be a new technology, replace conventional billboard. Billboard usage consumes plenty energy and not flexible. Fan hologram expected reduce electricity becomes more attractive general society. Prototype system build with solar cell as source energy, battery storage. The from sun also measured confirmed supply eno...

Abstract In this paper, we present two approaches for recording a quasi-hologram on the steel surface by femtosecond laser pulses. The process is done rotating polarization of beam half-wave plate or spatial light modulator (SLM), so can control orientation formed laser-induced periodic structures (LIPSS). Two different are shown, which use vector and bitmap images to record hologram. For first...