Recent advances in reversible opticalstorage materials compatible with low-cost semiconductor lasers have led to experiments on high-areal-density high-data-rate opticalstorage of digital data. The results of these ...
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Recent advances in reversible opticalstorage materials compatible with low-cost semiconductor lasers have led to experiments on high-areal-density high-data-rate opticalstorage of digital data. The results of these experiments indicate that areal-densities of 10**8 bits/in**2 (1. 6 multiplied by 10**7 bits/cm**2) and data-rates from 10-25 Mbits/sec appear feasible. This, together with an improved high-track-density beam servo scheme, allows a high-capacity (1G Byte/surface) optical file to be configured using 14 inch diameter disk technology.
Recent advances in reversible opticalstorage materials compatible with low-cost semiconductor lasers have led to experiments on high-areal-density high-data-rate opticalstorage of digital data. The results of these ...
详细信息
Recent advances in reversible opticalstorage materials compatible with low-cost semiconductor lasers have led to experiments on high-areal-density high-data-rate opticalstorage of digital data. The results of these experiments indicate that areal-densities of 10**8 bits/in**2 (1. 6 multiplied by 10**7 bits/cm**2) and data-rates from 10-25 Mbits/sec appear feasible. This, together with an improved high-track-density beam servo scheme, allows a high-capacity (1G Byte/surface) optical file to be configured using 14 inch diameter disk technology.
This book gathers selected papers presented at the conference “advances in 3D Image and Graphics Representation, Analysis, Computing and Information technology,” one of the first initiatives devoted to the problems ...
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ISBN:
(数字)9789811538636
ISBN:
(纸本)9789811538629;9789811538650
This book gathers selected papers presented at the conference “advances in 3D Image and Graphics Representation, Analysis, Computing and Information technology,” one of the first initiatives devoted to the problems of 3D imaging in all contemporary scientific and application areas. The aim of the conference was to establish a platform for experts to combine their efforts and share their ideas in the related areas in order to promote and accelerate future development. This second volume discusses algorithms and applications, focusing mainly on the following topics: 3D printing technologies; naked, dynamic and auxiliary 3D displays; VR/AR/MR devices; VR camera technologies; microprocessors for 3D data processing; advanced 3D computing systems; 3D data-storage technologies; 3D data networks and technologies; 3D data intelligent processing; 3D data cryptography and security; 3D visual quality estimation and measurement; and 3D decision support and information systems.
The photorefractive effect is now firmly established as one of the highest-sensitivity nonlinear optical effects, making it an attractive choice for use in many optical holographic processing applications. As with all...
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ISBN:
(数字)9781461522270
ISBN:
(纸本)9780792395607;9781461359364
The photorefractive effect is now firmly established as one of the highest-sensitivity nonlinear optical effects, making it an attractive choice for use in many optical holographic processing applications. As with all technologies based on advanced materials, the rate of progress in the development of photorefractive applications has been principally limited by the rate at which breakthroughs in materials science have supplied better photorefractive materials. The last ten years have seen an upsurge of interest in photorefractive applications because of several advances in the synthesis and growth of new and sensitive materials. This book is a collection of many of the most important recent developments in photorefractive effects and materials. The introductory chapter, which provides the necessary tools for understanding a wide variety of photorefractive phenomena, is followed by seven contributed chapters that offer views of the state-of-the-art in several different material systems. The second chapter represents the most detailed study to date on the growth and photorefractive performance of BaTi03, one of the most important photorefractive ferroelectrlcs. The third chapter describes the process of permanently fixing holographic gratings in ferroelectrics, important for volumetric datastorage with ultra-high data densities. The fourth chapter describes the discovery and theory of photorefractive spatial solitons. Photorefractive polymers are an exciting new class of photo refractive materials, described in the fifth chapter. Polymers have many advantages, primarily related to fabrication, that could promise a breakthrough to the marketplace because of ease and low-cost of manufacturing.
This book gathers selected papers presented at the conference “advances in 3D Image and Graphics Representation, Analysis, Computing and Information technology,” one of the first initiatives devoted to the problems ...
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ISBN:
(数字)9789811538674
ISBN:
(纸本)9789811538667
This book gathers selected papers presented at the conference “advances in 3D Image and Graphics Representation, Analysis, Computing and Information technology,” one of the first initiatives devoted to the problems of 3D imaging in all contemporary scientific and application areas. The aim of the conference was to establish a platform for experts to combine their efforts and share their ideas in the related areas in order to promote and accelerate future development. This second volume discusses algorithms and applications, focusing mainly on the following topics: 3D printing technologies; naked, dynamic and auxiliary 3D displays; VR/AR/MR devices; VR camera technologies; microprocessors for 3D data processing; advanced 3D computing systems; 3D data-storage technologies; 3D data networks and technologies; 3D data intelligent processing; 3D data cryptography and security; 3D visual quality estimation and measurement; and 3D decision support and information systems.
Infrared and visible light LEDs and photodetectors have found numerous applications and have become a truly enabling technology. The promise of solid state lighting has invigorated interest in white light LEDs. Ultrav...
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ISBN:
(数字)9781402021039
ISBN:
(纸本)9781402020346;9781402020353
Infrared and visible light LEDs and photodetectors have found numerous applications and have become a truly enabling technology. The promise of solid state lighting has invigorated interest in white light LEDs. Ultraviolet LEDs and solar blind photodetectors represent the next frontier in solid state emitters and hold promise for many important applications in biology, medi cine, dentistry, solid state lighting, displays, dense datastorage, and semi conductor manufacturing. One of the most important applications is in sys tems for the identification of hazardous biological agents. Compared to UV lamps, UV LEDs have lower power consumption, a longer life, compactness, and sharper spectral lines. UV LEDs can provide a variety of UV spectra and have shape and form factor flexibility and rugged ness. Using conventional phosphors, UV LEDs can generate white light with high CRI and high efficiency. If quantum cutter phosphors are developed, white light generation by UV LEDs might become even more efficient. advances in semiconductor materials and in improved light extraction techniques led to the development of a new generation of efficient and pow erful visible high-brightness LEDs and we expect that similar improvements will be achieved in solid-state UV technology.
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