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International Symposium on Photoelectronic Detection and Imaging 2009: advances in Imaging Detectors and Applications

作者： Qiaolin, Huang China

ISBN: (纸本)9780819476654

The paper analyzes the generated mechanism of the reset noise when reading out the CCD video signal. It also states a sampling technique for CCD output video signal, the Correlative Double Sampling (CDS) technique, which is on the basis of noises canceled-each-other and the mathematics correlative theory. The paper introduces the operation principle of the CDS technique and its filtering effects on the output noise of CCD (which includes the reset noise of CCD, the coupled cross-talk noise between the horizontal clock drive and the ground-wire of power supply, the white noise of output amplifier and the reset noise of 1/f noise). The paper gives a electric circuit of CDS that is applied practically. At last, it verified the conclusion that the output S/N of CCD signal can attain to 50dB. © 2009 SPIE.

关键词： Digital storage

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Development of a Scalable Payload Downlink Chain for Highly Agile Earth Observation Missions in Low Earth Orbit

Development of a Scalable Payload Downlink Chain for Highly ...

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4th International Conference on Recent advances in Space Technologies

作者： Garner, Peter Cooke, David Haslehurst, Andrew Surrey Satellite Technol Ltd Guildford Surrey England

ISBN: (纸本)9781424436262

This paper describes the development of a highly capable Payload Downlink Chain (PDC) for use on the Surrey Satellite technology Limited 300kg (SSTL-300) platform which has been designed to support small, low cost science and Earth Observation (EO) satellite missions operating in Low Earth Orbit (LEO). The driver behind the development of the PDC was the NigeriaSAT-2 [11 mission commissioned in 2006 by the Nigerian National Space Research and Development Agency (NASDRA), which is due for launch in 2009. NigeriaSAT-2 is a high performance EO mission designed for a seven-and-a-half year lifetime to achieve 2.5m imagery in a panchromatic waveband along with 5m and 32m imagery in four multi-spectral channels. The spacecraft will deliver high data throughput on an agile platform, whilst still maintaining high levels of pointing accuracy. All of this will be included in a 300Kg satellite. The key requirements for the mission were to maximize the data capacity, whilst maintaining a very modest total system cost and minimizing the technical risks throughout the development phase. The majority of the spacecraft constituent parts, including the structure, the optical instruments and the PDC have all been developed by Surrey Satellite technology Limited (SSTL) to satisfy the mission, so that the cost and schedule can be carefully controlled and be reliably repeated for future missions. Early design focused on making the system suitable for commercial operations, and consequently it was necessary to develop ways of maximizing the downlink data throughput without significantly affecting the mission cost. As a result of these requirements, an understanding of the necessary capability of the PDC was derived and then the requirement specification for each element of the PDC could be generated.

关键词： payload downlink chain mechanically steerable antenna data storage downlink transmitter scalable

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High-performance crosslinked colloidal quantum-dot light-emitting diodes

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NATURE PHOTONICS 2009年第6期3卷 341-345页

作者： Cho, Kyung-Sang Lee, Eun Kyung Joo, Won-Jae Jang, Eunjoo Kim, Tae-Ho Lee, Sang Jin Kwon, Soon-Jae Han, Jai Yong Kim, Byung-Ki Choi, Byoung Lyong Kim, Jong Min Samsung Elect Samsung Adv Inst Technol Frontier Res Lab Gyeonggi Do 446712 South Korea Samsung Elect Samsung Adv Inst Technol Mat Res Lab Gyeonggi Do 446712 South Korea Samsung Elect Samsung Adv Inst Technol Display Lab Gyeonggi Do 446712 South Korea

Colloidal quantum-dot light-emitting diodes have recently received considerable attention due to their ease of colour tunability, high brightness and narrow emission bandwidth. Although there have been rapid advances in luminance, efficiency and lifetime, device performance is still limited by the large energy barriers for hole and electron injection into the quantum-dot layer. Here, we show that by crosslinking the colloidal quantum-dot layer, the charge injection barrier in a red-light-emitting quantum-dot light-emitting diode may be considerably reduced by using a sol-gel TiO2 layer for electron transport. The device architecture is compatible with all-solution device fabrication and the resulting device shows a high luminance (12,380 cd m(-2)), low turn-on voltage (1.9 V) and high power efficiency (2.41 lm W-1). Incorporation of the technology into a display device with an active matrix drive backplane suggests that the approach has promise for use in high-performance, easy-to-fabricate, large-area displays and illumination sources.

关键词： nature photonics Nature Photonics nature publishing group content journal optoelectronics optics biophotonics quantum optics cryptography spectroscopy terahertz technology light propagation lasers LEDs photovotaics fibre optics optical data storage

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advances in optical data storage technology: 8-10 November 2004, Beijing, China (Proceedings of S P I E)

Advances In Optical Data Storage Technology: 8-10 November 2...

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2005年

作者： Duanyi Xu Kees A Schouhamer Immink Keiji Shono

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Proceedings of SPIE - advances in optical data storage technology

Proceedings of SPIE - Advances in Optical Data Storage Techn...

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advances in optical data storage technology

The proceedings contain 66 papers from the Proceedings of SPIE - advances in optical data storage technology. The topics discussed include: investigation of novel two-photon diarylethene for 3D optical data storage;simulation for integrated optical fiber head of multilayers parallel storage;signal processing and coding for multiwavelength and multilevel photochromic optical storage;pneumatic sensing system used for focusing in multiwavelength optical disk mastering;crosstalk eliminating and low-density parity-check codes for photochromic dual-wavelength storage;system design for double-layer blu-ray disc recorders;and experimental research on near-field optical storage and virtual probe based on solid immersion lens.

关键词： optical data storage

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超高密度相变存储的研究

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记录媒体技术 2009年第1期 34-37页

作者： Hendrik F.Hamann 刘相伟

相变存储被广泛应用于光信息技术中,比如DVD、CD-ROM等。目前相变存储也正在被考虑在非易失存储方面的应用。本文报道了相变材料的热存储优势,特别地,我们展示了存储密度为3.3Tb/in^2的可擦除热相变记录原理,该记录密度比目前的商业光... 详细信息

相变存储被广泛应用于光信息技术中,比如DVD、CD-ROM等。目前相变存储也正在被考虑在非易失存储方面的应用。本文报道了相变材料的热存储优势,特别地,我们展示了存储密度为3.3Tb/in^2的可擦除热相变记录原理,该记录密度比目前的商业光存储技术可达到的存储密度高3倍。我们演示了薄膜纳米加热器的原理,这种薄膜加热器可以实现小于50纳米的超小加热斑点。最后,我们展示了一种示例,薄膜加热器能够以非常高的速度写、擦除、读取存储材料的相位。该文章为基于相变材料的高密度光存储技术提供了重要的前进基石。

关键词：存储密度光存储技术超高密度记录密度相变热存储材料信息符非易失性存储器热磁记录存储单

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Recent advances in Photonic Devices for optical Super Computing

Recent Advances in Photonic Devices for Optical Super Comput...

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1st International Workshop on optical SuperComputing

作者： Abdeldayern, Hossin Frazier, Donald O. Witherow, William K. Banks, Curtis E. Penn, Benjamin G. Paley, Mark S. NASA Goddard Space Flight Ctr Code 305 Greenbelt MD 20771 USA NASA Marshall Space Flight Ctr Huntsville AL 35812 USA NASA Marshall Space Flight Ctr ISHM & Sensors Branch Huntsville AL 35812 USA NASA Marshall Space Flight Ctr AZ TECH Huntsville AL 35812 USA

ISBN: (纸本)9783540856726

The twentieth century has been the era of semiconductor materials and electronic technology while this millennium is expected to be the age of photonic materials and optical technology. optical technology has led to countless optical devices that have become indispensable in our daily lives in storage area networks (SANs) [1], parallel processing [2,3], optical switches [4,5], all-optical data networks [6], holographic storage devices [7] and biometric devices at airports [8]. © 2008 Springer-Verlag Berlin Heidelberg.

关键词： optical switches

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advances in OPC technology and development of ZOPC tool

Advances in OPC technology and development of ZOPC tool

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Quantum Optics, optical data storage, and Advanced Microlithography

作者： Yan, Xiaolang Shi, Zheng Chen, Ye Chen, Qijun Institute of VLSI Design Zhejiang University Hangzhou 310027 China

ISBN: (纸本)9780819470027

As the most important RET (Resolution Enhancement technology), OPC (optical Proximity Correction) technology has been widely used in today's IC manufacturing and is still developing very fast both in its principle and its practice. In this invited paper, key techniques of OPC are classified and overviewed;progresses of OPC technology in recent years published in major SPIE symposiums are reviewed as well. Recent research results produced by Zhejiang University's team are described and reviewed with highlighting. An OPC tool suite named ZOPC, which has been designed to enable new OPC techniques to be integrated into one platform, is presented. The framework of ZOPC as well as its working scheme is demonstrated with real examples.

关键词： Distance measurement

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Evolution as applied to optical lithography

Evolution as applied to optical lithography

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Quantum Optics, optical data storage, and Advanced Microlithography

作者： Flagello, Donis G. ASML US Inc. 8555 S. River Parkway Tempe AZ 85284

ISBN: (纸本)9780819470027

The recent advancement of water immersion technology into lithography for 193nm wavelengths has allowed the numerical aperture (NA) of lithographic lenses to exceed 1.0 or a hyper-NA region. This allows resolution limits to extend to the 45nm node and beyond with NA>1.35. At these extreme NAs, the imaging within the photoresist is accomplished by not only using water immersion but also using polarized light lithography. This paper will show how the advances in current state-of-the-art in immersion, hyper-NA lithography have been preceded by extraordinary evolutionary behavior in lenses and imaging. We show the latest results and discuss the various phenomena that may arise using these systems show possible evolution paths in immersion lithography. We discuss and analyze the various issues with Hyper-NA technology that may force a paradigm change from single exposure imaging to multiple patterning techniques. In addition, we show that the future of optical lithography is likely to go well beyond the 30nm regime using advancements in 193nm double-patterning technology and/or the use of extreme ultra-violet (EUV) optical systems.

关键词： Photolithography

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Blood-vessel closure using photosensitizers engineered for two-photon excitation

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NATURE PHOTONICS 2008年第7期2卷 420-424页

作者： Collins, Hazel A. Khurana, Mamta Moriyama, Eduardo H. Mariampillai, Adrian Dahlstedt, Emma Balaz, Milan Kuimova, Marina K. Drobizhev, Mikhail Yang, Victor X. D. Phillips, David Rebane, Aleksander Wilson, Brian C. Anderson, Harry L. Univ Toronto Ontario Canc Inst Dept Med Biophys Toronto ON M5G 2M9 Canada Univ Oxford Dept Chem Chem Res Lab Oxford OX1 3TA England Ryerson Univ Dept Phys Toronto ON M5B 2K3 Canada Univ London Imperial Coll Sci Technol & Med Dept Chem London SW7 2AZ England Montana State Univ Dept Phys Bozeman MT USA

The spatial control of optical absorption provided by two-photon excitation has led to tremendous advances in microscopy(1) and microfabrication(2). Medical applications of two-photon excitation in photodynamic therapy(3,4) have been widely suggested(5-18), but thus far have been rendered impractical by the low two-photon cross-sections of photosensitizer drugs (which are compounds taken up by living tissues that become toxic on absorption of light). The invention of efficient two-photon activated drugs will allow precise three-dimensional manipulation of treatment volumes, providing a level of targeting unattainable with current therapeutic techniques. Here we present a new family of photodynamic therapy drugs designed for efficient two-photon excitation and use one of them to demonstrate selective closure of blood vessels through two-photon excitation photodynamic therapy in vivo. These conjugated porphyrin dimers have two-photon cross-sections that are more than two orders of magnitude greater than those of standard clinical photosensitizers(17). This is the first demonstration of in vivo photodynamic therapy using a photosensitizer engineered for efficient two-photon excitation.

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