The development of suitable recording media for applications such as holographic optical elements and holographic data storage are of significant research and commercial interest. In this paper, a photopolymer material developed by Bayer MaterialScience is examined using various optical techniques and then characterised using the Non-local Photo-polymerization Driven Diffusion model. This mater...

Long-term optical data storage (ODS) technology is essential to break the bottleneck of high energy consumption for information in current era big data. Here, ODS with an ultralong lifetime 2×107 years attained single ultrafast laser pulse induced reduction Eu3+ ions and tailoring properties inside Eu-doped aluminosilicate glasses. We demonstrate that local modifications g...

Previous research on analyzing time-varying image sequences has concentrated on finding the necessary (and sufficient) conditions for a unique 3-D solution. While such an approach provides useful theoretical insight, the resulting algorithms turn out to be too sensitive to be of pratical use. We claim that any robust algorithm must improve the 3-D solution adaptively over time. As the first ste...

We describe optical disks that store data holographically in three dimensions by using either angle multiplexing or wavelength multiplexing. Data are stored and retrieved in parallel blocks or pages, and each page consists of approximately 10(6) bits. The storage capacity of such disks is derived as a function of disk thickness, pixel size, page size, and scanning parameters. The optimum storag...

Recent advancements in our high-speed multi-level (analog) 512x512 liquid crystal Spatial Light Modulator (SLM) will be presented. These advancements include smaller pixel pitch, greatly improved optical efficiency, and higher speed operation. The new VLSI SLM can utilize Ferroelectric Liquid Crystal (FLC) or Nematic Liquid Crystal (NLC) to achieve phase-only, amplitude-only, and phase-amplitud...

The transient reflectivity response of phase-change Ge2Sb2Te5 films to intense femtosecond laser pulses is studied by ultrafast coherent phonon spectroscopy. The three different phases amorphous, fcc-, and hcp-crystalline , as well as laser-crystallized films, are investigated, featuring different photoexcited carrier and coherent optical phonon dynamics. At least two main phonon frequencies ar...

Aggregate size and shape measurements are increasingly becoming important issues in the mining, comminution, materials handling, and construction industries. Screening or sieving methods, today’s standard method of sizing stone materials, are simply too inefficient for some applications, excessively time consuming and costly for others, and do not provide enough data for yet other applications....