Experimental observations of the self-pumped phase conjugation properties in a 0°-cut undoped pentagon-shaped BaTi03crystal are reported. Experiment shows that this phase conjugator produces a very steady phase-c...
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Summary form only given. The ever increasing datastorage requirements of computer technology has lead many researchers to investigate a variety of three dimensional (3-D) optical memory schemes. opticaldatastorage ...
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Summary form only given. The ever increasing datastorage requirements of computer technology has lead many researchers to investigate a variety of three dimensional (3-D) optical memory schemes. opticaldatastorage in 3-D has the important advantage that bit storage density scales as 1//spl lambda//sup 3/ compared to 1//spl lambda//sup 2/ for 2-D optical memories, which potentially allows for bit densities in excess of 10/sup 12/ bits/cm/sup 3/ in 3-D media. In this work we report on the application of a novel polymer nanocomposite to the task of 3-D opticaldatastorage. The nanocomposite has a 3-D hexagonal closed packed structure of "hard" PMMA core particles embedded in a matrix of (methyl)methacrylate(MMA)-(butyl)methacrylate(BMA) copolymer. The cores are functionalized by cross-linking a fluorescent dye randomly on the PMMA polymer chain.
Summary form only given. Polymeric nonlinear optical materials have been subject to intense research activity because of simple device manufacturing. Photorefractive polymer (PRP) materials may find use in application...
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Summary form only given. Polymeric nonlinear optical materials have been subject to intense research activity because of simple device manufacturing. Photorefractive polymer (PRP) materials may find use in applications such as holographic datastorage. For holographic datastorage in PRPs, interfering laser beams produce a patterned space charge field via charge generation, drift and trapping.
opticaldatastorage in volume holograms has been an exciting prospect for high datastoragetechnology since the digital volume holographic storage system was demonstrated. Angle and wavelength-multiplexed recordings...
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opticaldatastorage in volume holograms has been an exciting prospect for high datastoragetechnology since the digital volume holographic storage system was demonstrated. Angle and wavelength-multiplexed recordings have excellent potential for a large storage capacity. Recently we developed a diode-pumped single-frequency and tunable Yb:YAG microchip laser. We demonstrate the angle and wavelength multiplexed recording by using the tunable intracavity frequency-doubled Yb:YAG green laser.
Summary form only given. An ultrafast secure data transmission using time-to-space converters is proposed. The spatial original data is encrypted by using double random phase encoding and is then stored in an optical ...
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Summary form only given. An ultrafast secure data transmission using time-to-space converters is proposed. The spatial original data is encrypted by using double random phase encoding and is then stored in an opticalstorage material. We can use multi-dimensional keys to make the system more secure.
A new paradigm for very-high-density datastorage is proposed. This paradigm makes use of scintillating data-storage medium and an electron beam microcolumn to probe the stored data. This method of datastorage is not...
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A new paradigm for very-high-density datastorage is proposed. This paradigm makes use of scintillating data-storage medium and an electron beam microcolumn to probe the stored data. This method of datastorage is not limited by superparamagnetism or optical diffraction. This paradigm is suitable for read-only memory and one-time-write memory applications. Extending this scheme to a fully read-write device is under current investigations.
At the SMPTE '97 conference and Exhibition, the concept of representing motion picture film images in a universal data format was presented. Since then, the enabling technology has met with widespread acceptance, ...
At the SMPTE '97 conference and Exhibition, the concept of representing motion picture film images in a universal data format was presented. Since then, the enabling technology has met with widespread acceptance, with over 80 units of the core product being installed worldwide. — During this time also, several key building blocks have been added by the same supplier to extend the film-in-data concept, allowing the full power and flexibility of computer workstations, coupled with tremendous hardware acceleration, to be applied to the creative production and post-production processes. The successful data concept can even be ‘tunnelled’ through the high definition video domain, allowing the major benefits of the data process to be achieved in real time and using low cost video tape storage. — The paper will examine these advances, both in a tutorial manner and with illustrations of some of the real world applications, such as complete feature film post-production and multi-format DTV production, to which users are successfully putting this new technology.
Results of new CMOS-integrated PIN photodiodes in optoelectronic integrated circuits (OEICs) for applications in opticalstorage systems, in opticaldata transmission and in optical interconnects are presented. The ri...
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Results of new CMOS-integrated PIN photodiodes in optoelectronic integrated circuits (OEICs) for applications in opticalstorage systems, in opticaldata transmission and in optical interconnects are presented. The rise and fall times of the integrated PIN photodiodes are below 0.3 us. The CMOS-integrated PIN photodiodes are sufficient for a NRZ data rate of 1.5 Gb/s and the results show that PIN CMOS receiver OEICs in submicron technologies enable data rates up to 1 Gb/s. These photodiodes combine this high speed with a high quantum efficiency of approximately 50%. The further improvement of their quantum efficiency above 90% by the integration of an antireflection coating is discussed. Low-offset PIN-CMOS-OEICs for application in digital-versatile-disk (DVD) systems with bandwidths in excess of 32 MHz are presented. A high speed PIN-CMOS-OEIC in 1.0 /spl mu/m technology for opticaldata transmission exhibits a data rate of 622 Mb/s.
In order to meet the ever increased datastorage demanding wide range approaches have been taken such as to increased density ;md to explore new technology. Magneto-optical (MO) technology coupled with flying head has...
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In order to meet the ever increased datastorage demanding wide range approaches have been taken such as to increased density ;md to explore new technology. Magneto-optical (MO) technology coupled with flying head has received increased attention recently.
Measurements on an analog BiCMOS OEIC demonstrate enhanced data rates, making it attractive for large-volume multimedia and consumer applications such as opticalstorage (OS) systems like CD-ROM or digital versatile d...
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Measurements on an analog BiCMOS OEIC demonstrate enhanced data rates, making it attractive for large-volume multimedia and consumer applications such as opticalstorage (OS) systems like CD-ROM or digital versatile disk (DVD).
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