Optical discs for information storage

Side-chain liquid-crystalline polyesters for optical information storage.

We report erasable holographic recording with a resolution of at least 2500 lines/mm on unoriented films of sidechain liquid-crystalline polyesters. Recording energies of approximately 1 J/cm(2) have been used. We have obtained a diffraction efficiency of approximately 30% with polarization recording of holograms. The holograms can be erased by heating them to approximately 80 degrees C for app...

Systems for Optical Storage and Processing of Information

Information Storage and Retrieval for Probe Storage using Optical Diffraction Patterns

Joost W. van Honschoten , Henri W. de Jong, ∗ Wabe W. Koelmans, † Thomas P. Parnell, ‡ and Oleg Zaboronski § MESA+ Research Institute, University of Twente, P.O. Box 217, 7500 AE, Enschede The Netherlands Siglead Europe Ltd., International Digital Laboratory, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK Mathematics Institute, University of Warwick, Gibbet Hill Road, Coventry CV...

Coding for Information Storage

Storage systems are widely used and have played a crucial rule in both consumer and industrial products, for example, personal computers, data centers, and embedded systems. However, such system suffers from issues of cost, restricted-lifetime, and reliability with the emergence of new systems and devices, such as distributed storage and flash memory, respectively. Information theory, on the ot...

Optical klystron FEL scheme for x-ray coherent harmonic generation at ISLF storage ring

The possibility of inserting an optical klystron on the storage ring of an Iranian Light Source Facility as a Synchrotron Radiation Free electron Laser for coherence harmonic generation in the soft x-ray spectrum has been studied. The study has been performed using the 3D FEL simulation code GENESIS 1.3 and in accordance with the available characteristic parameters of ISLF. Different potential ...