| Iconic Representation and Dynamic Information Fidelity: Implications for Decision Support |
OCT 2006 |
45 pages |
| Authors:
Robert P. Mahan; Jun Wang; Nancy Yanchus; Linda R. Elliott; Elizabeth S. Redden; Ruby Shattuck; GEORGIA UNIV ATHENS DEPT OF PSYCHOLOGY
|
 | This report addresses the fitness of using icon-based systems to support decision making within a domain where the quality and reliability of the information are dynamically changing. Specifically, the study examined the use of iconic and non-iconic display forms to communicate information fidelity levels to decision makers for the purpose of supporting land navigation judgments. The results indicated that graphic and animated icons, as well as traditional digital display formats, ... |
|
| Color Analysis in Air Traffic Control Displays. Part 1: Radar Displays |
OCT 2006 |
21 pages |
| Authors:
Jing Xing; FEDERAL AVIATION ADMINISTRATION OKLAHOMA CITY OK CIVIL AEROMEDICAL INST
|
| One of the current trends in air traffic control (ATC) display technology is a substantial increase in the use of color. Whereas the advantages of color may seem apparent, little attention has been devoted to potential disadvantages of color use with respect to complex cognitive aspects of the ATC environment. Although controllers use several different displays simultaneously (designed and manufactured by different companies), the Federal Aviation Administration (FAA) has not ... |
|
| First Demonstration of ~10 Microns FPAs in InAs/GaSb SLS |
OCT 2006 |
5 pages |
| Authors:
Manijeh Razeghi; Pierre-Yves Delaunay; Binh M. Nguyen; Andrew Hood; Darin Hoffman; Ryan McClintock; Yajun Wei; Erick Michel; Vaidya Nathan; Meimei Z. Tidrow; NORTHWESTERN UNIV EVANSTON IL CENTER FOR QUANTUM DEVICES
|
| The concept of Type II InAs/GaSb superlattice was first brought by Nobel Laureate L. Esaki, et al. in the 1970s. There had been few studies on this material system until two decades later when reasonable quality material growth was made possible using molecular beam epitaxy. With the addition of cracker cells for the group V sources and optimizations of material growth conditions, the superlattice quality become significantly improved and the ... |
|
| Feasibility Study of Nanoscale Semiconductor Manufacture Using Thermal Dip Pen Nanolithography |
30 SEP 2006 |
7 pages |
| Authors:
William P. King; GEORGIA TECH RESEARCH CORP ATLANTA
|
| This one-year feasibility study explored the use of thermal dip-pen nanolithography (DPN) for the purpose of nanoscale electronics manufacturing. In this project, we have demonstrated that using the thermal DPN technique that both indium metal, and semiconducting organic materials (PDDT, PVDF) can be written in arbitrary locations on semiconductor surfaces with sub-100 nm feature sizes. We have measured the electrical properties of these nanostructure deposits and found them to be ... |
|
| International Conference on Electronic Processes in Organic Materials (6th) Held in Gurzuf, Crimea, Ukraine, on September 25-29, 2006 |
29 SEP 2006 |
215 pages |
| Authors:
Ya. Vertsimakha; UKRAINIAN ACADEMY OF SCIENCES KIEV INST OF PHYSICS
|
| The Final Proceedings for 6th International Conference `Electronic Processes in Organic Materials', 25-29 September 2006. This conference will cover the following topics: 1. Energy structure of organic materials and electronic processes in organic compounds 2. Electronic processes at interfaces of organic materials to metals, as well as biological, organic, inorganic media and nanostructures 3. Electro-optic processes in confined liquid crystals 4. Nonlinear properties of organic structures and composites 5. Electronic ... |
|
| Superconducting Magnet System for a Low Temperature Laser Scanning Microscope |
22 SEP 2006 |
5 pages |
| Authors:
David C. Larbalestier; WISCONSIN UNIV-MADISON APPLIED SUPERCONDUCTIVITY CENTER
|
| The dominant current-limiting mechanism in YBCO CC tapes still occurs at grain boundaries over a wide range of magnetic fields, even when the FWHM of the texture distribution is only 4-5 deg. The LTLSM is one of very few instruments that can directly observe this limitation. Our initial studies with the LTLSM bought with this equipment grant show that the intragrain critical current density crosses over with the intergrain critical ... |
|
| Surface-Modified Quantum Dots Enhanced Luminescence Polymer Nanocomposites Light Emitting Diode |
10 SEP 2006 |
25 pages |
| Authors:
Kung-Hwa Wei; NATIONAL CHIAO TUNG UNIV HSINCHU (TAIWAN) DEPT OF MATERIALS SCIENCE
|
| We have prepared highly luminescent dendron-substituted copolyfluorenes that incorporate surface-modified cadmium sulfide nanoparticles. A small percentage of these nanoparticles can be incorporated into the dendritic structures upon tailoring the interfaces between the ligands on the nanoparticles and the dendritic structures in the copolyfluorene. Both the photoluminescence and electroluminescence efficiencies of the polymer nanocomposites are dramatically enhanced--sometimes by more than double--relative to the values of the pure polymer, indicating formation of ... |
|
| Dynamics of Epitaxy on the Nano-sized Semiconductor Surfaces |
05 SEP 2006 |
17 pages |
| Authors:
Deng-Sung Lin; NATIONAL CHIAO-TUNG UNIV HSINCHU (TAIWAN) INST OF PHYSICS
|
| Semiconductor self assembled quantum dots (QDs) have emerged as one of the simplest subjects for exploring and exploiting the physics and device applications of charge carriers and excitons in the three dimensional confinement regime. Nanoscale-sized surface in the form of mesa or ridges on patterned substrates offer opportunities not only for creating large densities of QDs with great homogeneity but also for novel growth-control engineering. This project aims at a ... |
|
| Study on Wide-gap Gallium-nitride Based Films and Their Quantum-dots Devices |
05 SEP 2006 |
95 pages |
| Authors:
Huey-Liang Hwang; Jung-Min Hwang; Brian Yei; Kuan-Feng Lee; NATIONAL TSING HUA UNIV HSINCHU (TAIWAN) INST OF ELECTRONICS ENGINEERING
|
| Wide-gap III-Nitride based white light emission had been proven to yield luminescence efficiency (20-30 Lumen/W) and the III-Nitride devices proved long lifetime (>10khr). It is expected that high efficiency III-Nitride based white light emission will be the major lighting source for daily illumination in the coming decades. In 1998, the world energy consumption of energy is 69,000 TWh. There had been 2300 TWh consumption in illumination with rather inefficiently way. ... |
|
| Brijuni Conference (10th), Imaging in Space and Time. Held in Brijuni, Croatia on 28 August-1 September 2006 |
01 SEP 2006 |
60 pages |
| Authors:
Slobodan D. Bosanac; INSTITUT RUDJER BOSKOVIC ZAGREB (YUGOSLAVIA)
|
| The Final Abstracts for the Conference, Imaging in Space and Time, 28 August 2006 - 1 September 2006. The conference included: A) Acquiring and analyzing data from space. Much of information on distant objects in space is obtained from images in various frequency domains of electromagnetic radiation. Acquiring and analysis of images was reviewed. B) Nanotechnology for manipulation of light: Future advances in fundamental and applied research are envisaged in ... |
|
| Remote Sensing of the Refractive Environment Above the Marine Stratocumulus-Topped Boundary Layer |
SEP 2006 |
85 pages |
| Authors:
Dennis T. Derley; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| Electro-Magnetic propagation paths are subject to refraction as they travel through moisture and temperature gradients found within the inversion layer at the top of the stratocumulus-topped marine boundary layers (STBL). The NPS Meteorology Department is developing an automated program called SEMEO (Satellite Electro-Magnetic Electro-Optical) that will use remote sensors to estimate the cloud-top height, and characterize the ducting conditions over large regions. In addition to estimating the location and strength ... |
|
| WEBTAS Software Life Cycle Development |
SEP 2006 |
30 pages |
| Authors:
INTELLIGENT SOFTWARE SOLUTIONS COLORADO SPRINGS CO
|
| Under this effort, ISS enhanced the WebTAS Data Gateway to improve the system's ability to maximize generic data access and data mapping across disparate data sources. Additional capabilities included the enhancements to the WebTAS Project Manager function to include features that were previously embedded within the View manager. In addition, there were significant improvements in the functionality and flexibility of the WEbTAS Timetable capability to allow the user full control ... |
|
| Diamond Shaped Ring Laser Characterization, Package Design and Performance |
SEP 2006 |
9 pages |
| Authors:
Rebecca J. Bussjager; Steve Johns; Michael Hayduk; Joseph Osman; Reinhard Erdmann; Brian McKeon; Charles Shick; Nancy Stoffel; Songsheng Tan; Wesley Bacon; AIR FORCE RESEARCH LAB ROME NY SENSORS DIRECTORATE
|
| A semiconductor diamond-shaped ring laser was fabricated and packaged for further test and analysis as an element in digital photonic logic. The optical characteristics of the ring laser were quantified in order to design a prototype package. The mode field was found to be quasi-circular. Based on the mode field of the laser, coupling curves were calculated and Corning OptiFocus(TM) Lensed fiber was chosen to use for the four fiber ... |
|
| Frequency Stabilization of a Waveguide Laser Using Pound-Drever-Hall |
SEP 2006 |
11 pages |
| Authors:
Michael Fanto; John Malowicki; Rebecca J. Bussjager; Paul Repak; Kelly Kramer; Daniel Casimir; Michael Hayduk; AIR FORCE RESEARCH LAB ROME NY SENSORS DIRECTORATE
|
| The generation of ultra-stable model-locked pulses in the 1550 regime is required for high resolution signal processing applications that include electro-optic sampling, transient probes, and optical clocks. More recently the frequency combs comprising these pulses have been applied to innovative methods of Arbitrary Waveform Generation (AWG) in the optical domain. Temporal stability in certain of these applications assumes the utmost importance. A proven approach to address the key issue, entails ... |
|
| A Unified Taxonomic Approach to the Laboratory Assessment of Visionic Devices |
SEP 2006 |
15 pages |
| Authors:
Alan R. Pinkus; Clarence E. Rash; ARMY AEROMEDICAL RESEARCH LAB FORT RUCKER AL
|
| The increased usage of visionic devices necessitates the development of a unified approach to testing and evaluation of such devices. A NATO working group was established to achieve this goal. This presentation describes a taxonomy to classify a given visionic device (based on optical design and display type) and to recommend specific test parameters that should be measured to ensure planned operational performance is delivered in the final product. |
|
| Collaborative Research and Development. Delivery Order 0006: Transmission Electron Microscope Image Modeling and Semiconductor Heterointerface Characterization |
SEP 2006 |
46 pages |
| Authors:
Krishnamurthy Mahalingam; UNIVERSAL TECHNOLOGY CORP DAYTON OH
|
| This research in support of the Air Force Research Laboratory, Materials and Manufacturing Directorate was conducted at Wright-Patterson AFB, Ohio from 19 May 2003 through 18 May 2006. Transmission electron microscope (TEM) characterization studies were performed on a variety of novel III-V semiconductor heterostructures being developed for advanced optoelectronic device applications. A new approach is developed for true atomic scale compositional mapping of interfaces in mixed cation-anion III-V semiconductor heterostructures. ... |
|
| Biopolymers in Light Emitting Devices |
Sep-2006 |
4 pages |
| Authors:
Zhou Yu; Hans Spaeth; Duk Y Kim; Daewoo Han; Weixin Li; Robert A Jones; Joshua A Hagen; Andrew J Steckl; James G Grote; F K Hopkins; CINCINNATI UNIV OH NANOELECTRONICS LAB
|
| In this paper we describe DNA based fluorescent thin films and light emitting diodes and compare their current performance and future prospects to conventional organic counterparts. |
|
| The Relationship of Microscopic Material Characteristics & Physical Behavior of Quantum Dots |
25 AUG 2006 |
4 pages |
| Authors:
Shan Torng; Y-C Fang; L. Hsu; CHUNG-SHAN INST OF SCIENCE AND TECHNOLOGY TAO-YUAN (TAIWAN) MATERIAL AND ELECTRO-OPTICS DIV
|
| This research collected and analyzed the composition, structure and microstructure information at microscopic scales for the self-organized InAs/GaAs quantum dots through development of proper characterization techniques. |
|
| Strong Optical Injection Locking of Edge-Emitting Lasers and Its Applications |
18 AUG 2006 |
158 pages |
| Authors:
Hyuk-Kee Sung; CALIFORNIA UNIV BERKELEY DEPT OF ELECTRICAL ENGINEERING AND COMPUTER SCIENCE
|
| Semiconductor lasers are essential components that enable high-speed long-haul communication and have been widely used for various applications in photonics technology. Semiconductor lasers under optical injection locking exhibit superior performance over free-running lasers and provide useful applications not achievable through the free-running lasers. The performance of injection-locked lasers has been found to be significantly improved with stronger injection. In this dissertation, the characteristics and applications of semiconductor lasers under strong ... |
|
| Nanoimprinting of Micro-Optical Components Fabricated using Stamps Made with Proton Beam Writing |
26 JUL 2006 |
5 pages |
| Authors:
Jeroen A. van Kan; A. A. Bettiol; T. Osipowicz; F. Watt; NATIONAL UNIV OF SINGAPORE DEPT OF PHYSICS
|
| Investigation of the process of nanoimprinting in combination with proton beam writing with Ni electroplating for the replication of optical components in polymer substrates through nanoimprinting. |
|
| Nanoscale Polymeric Photocells by Advanced Electrospinning |
20 JUL 2006 |
51 pages |
| Authors:
Anvar Zakhidov; John Ferraris; Kenneth Balkus; TEXAS UNIV AT DALLAS RICHARDSON
|
| We presented detailed study of postproduction neat treatment of organic solar cells based on RR-P3HT:PCBM composite in a wide temperature range. The efficiency of such device was significantly Improved by postproduction heat treatment. Optimized parameters yielded >3% efficiency for devices on glass substrates and of |
|
| Modulation Diversity for Chromatic Dispersion Compensation in Analog Photonic Links |
14 JUL 2006 |
18 pages |
| Authors:
Vincent J. Urick; Frank Bucholtz; NAVAL RESEARCH LAB WASHINGTON DC OPTICAL SCIENCES DIV
|
| We present two solutions for chromatic dispersion compensation in analog photonic links based on modulation diversity. Both concepts are described in theory and demonstrated experimentally. The first, a modulation diversity receiver, on the other hand, is shown to be a completely passive device that adequately compensates for an arbitrary amount of chromatic dispersion in an analog fiber optic link. A band-limited design of the receiver is demonstrated, but essentially any ... |
|
| A Comprehensive Approach to Phonon Control for Enhanced Device Performance |
12 JUL 2006 |
38 pages |
| Authors:
Roberto Merlin; Pallab K. Bhattacharya; James R. Mellor; Rachel Goldman; George Haddad; Robert J. Hiller; Jacob Khurgin; Ki W. Kim; Cagliyan Kurdak; Madeleine Msall; Hadis Morkoc; Theodore Norris; Kan Wang; MICHIGAN UNIV REGENTS ANN ARBOR DIV OF RESEARCH DEVELOPMENT AND ADMINISTRATION
|
| The goals of this program were to identify, develop and implement configurations in which phonons and the coupling of phonons to carriers lead to enhanced device performance. A significant component of our efforts centered on artificial semiconductor heterostructures such as quantum-wells, quantum-dots and superlattices. We considered existing devices such as quantum-heterostructure lasers and detectors and field-effect transistors as well as new concepts relying on the interaction between carriers and coherent ... |
|
| Mesoporous Carbons With Self-Assembled High-Activity Surfaces (PREPRINT) |
07 JUL 2006 |
23 pages |
| Authors:
Kengqing Jian; Trun C. Truong; Robert H. Hurt; Wesley P. Hoffman; BROWN UNIV PROVIDENCE RI DEPT OF ENGINEERING
|
| There is great interest in the development of improved mesoporous carbons as sorbents, catalyst supports, capacitors, and electrodes. The optimization of mesoporous carbons typically focuses on the control of pore structure, surface area, and the number and type of surface functional groups. A porous carbon property that is often overlooked is the crystal structure of the carbon in the immediate vicinity of the internal surfaces. This interfacial structure provides the ... |
|
| Challenges and Opportunities for Biophotonic Devices in the Liquid State and the Solid State |
JUL 2006 |
4 pages |
| Authors:
A. J. Steckl; J. A. Hagen; Z. Yu; R. A. Jones; W. Li; D. Han; D. Y. Kim; H. Spaeth; J. G. Grote; F. K. Hopkins; CINCINNATI UNIV OH NANOELECTRONICS LAB
|
| In this paper we discuss the unique challenges and opportunities present in using biomaterials in photonics applications. We describe biophotonic materials and devices fabricated and operated in the solid state (fluorescent nanometer thin films, light emitting diodes) and in the liquid state (electrofluidic fluorescent biosensor, microfluidic switches). |
|
| Time-Resolved Scanning Electron Microscopy |
15 JUN 2006 |
8 pages |
| Authors:
Peter M. Weber; BROWN UNIV PROVIDENCE RI
|
| The project explores the combination of ultrashort pulsed laser technology with electron microscopy. The objective is to build an electron microscope with a pulsed electron beam, in order to observe nanoscale structures with ultrafast time-resolution. The pulsed electron beam is obtained by rapidly switching the electron emission of a field emission tip using the AC electric field arising from exposure to the intense electromagnetic radiation emanating from an ultrashort pulsed ... |
|
| Optoelectronic Devices Based on Novel Semiconductor Structures |
14 JUN 2006 |
84 pages |
| Authors:
Yujie J. Ding; LEHIGH UNIV BETHLEHEM PA
|
| During the funding period (July 15, 2002 - March 14, 2006, i.e. the total of 44 months including 36 months plus 8 months for no-cost extension), we had made great progress on a series of the research projects in order to achieve the objectives set for this grant, i.e. investigations of nanostructures and nanodevices based on novel structures and efficient THz generation and detection based on novel schemes. In this ... |
|
| A Case Analysis of Energy Savings Performance Contract Projects and Photovoltaic Energy at Fort Bliss, El Paso, Texas |
JUN 2006 |
165 pages |
| Authors:
William J. Barich; Brent L. Dessing; Antonio B. Harley; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| The purpose of this MBA Project is to review existing policy of the Federal Energy Management Program under the purview of National Renewal Energy Laboratory (NREL) for Energy Savings Performance Contracts (ESPCs). This project will assess the ability for the Department of Defense to incorporate emerging technologies in alternative energy to supplement or replace existing power sources for DoD installations within the current Energy Savings Performance Contract policy. To do ... |
|
| Intelligence, Surveillance, and Reconnaissance (ISR) Planning Capability |
JUN 2006 |
8 pages |
| Authors:
Gilbert G. Kuperman; AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH HUMAN EFFECTIVENESS DIRECTORATE
|
| Project Description: Development and demonstration of shared battlespace awareness display capability between the ISR and Combat Operations Divisions of the AOC. What does it do? Conceptual displays to support ATO ISR collection plan execution monitoring, adjustment, and retasking. Products and benefits to the customer: (1) Enhanced capability to visualize actual ISR collection activities and plans in spatial and temporal contexts; (2) Current synchronization matrix is static and referenced only to ... |
|
| High Intensity Light Propagation in InAs (Preprint) |
JUN 2006 |
11 pages |
| Authors:
Shekhar Guha; Leo Gonzalez; SRINIVASAN KRISHNAMURTHY; Zhi G. Yu; AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH SURVIVABILITY AND SENSOR MATERIALS DIV/HARDENED MATERIALS
|
| We present our experimental and theoretical results on nonlinear absorption of light in InAs. The nonlinear variation of output intensity as a function of input intensity and time are calculated by solving four coupled rate equations simultaneously. All required quantities, including two-photon absorption, free-carrier absorption, Auger and radiative recombination lifetimes, and intrinsic carrier densities, have been obtained from the underlying band structures. The calculated thickness and energy-dependent output intensities in ... |
|
| Robust Visible and Infrared Light Emitting Devices Using Rare-Earth-Doped GaN |
31 MAY 2006 |
18 pages |
| Authors:
Andrew Steckl; CINCINNATI UNIV OH
|
| Rare earth (RE) dopants (such as Er, Eu, Tm) in the wide bandgap semiconductor (WBGS) GaN are investigated for the fabrication of robust visible and infrared light emitting devices at a variety of wavelengths. GaN:RE devices are extremely versatile emitters which emit light at very specific wavelengths and with very narrow spectral linewidth (due to inner shell transitions of the selected RE dopants). We have fabricated singly doped GaN: RE ... |
|
| Realization of New and Enhanced Materials Properties Through Nanostructural Control |
15 MAY 2006 |
22 pages |
| Authors:
Larry Dalton; WASHINGTON UNIV SEATTLE DEPT OF CHEMISTRY
|
| This research focuses on: (1) Organic electro-optic materials with the objective of realizing materials characterized by electro-optic coefficients greater than 300 pm/V at telecommunication wavelengths and which pass telecordial standards. New processing techniques were developed for fabrication 3-D devices and circuits and for achieving low insertion loss electro-optic devices including active wavelength division multiplexing WDM transmitter/receiver systems. During this period of time, the Dalton research group served as the national ... |
|
| Ultra-Linear Polymer Modulator |
MAY 2006 |
69 pages |
| Authors:
Lou Bintz; Alan Mickelson; LUMERA CORP BOTHELL WA
|
| Polymer electro-optic modulators with applications to photonic link systems requiring high spur free dynamic range are discussed. Multilayer high microbeta electro-optic polymer modulators were designed, fabricated and tested. The linearized designs include three electrode electro-optic modulators, 3dB coupled directional couplers, Mach Zehnder modulators, dual drive modulators. The problem of bias drift is thoroughly discussed. A 3dB coupled directional coupler with increasing separation between arms (splayed) was modeled, fabricated and tested ... |
|
| Time-Resolved IR Electroluminescence Spectroscopy System |
MAY 2006 |
18 pages |
| Authors:
Yong-Hang Zhang; ARIZONA STATE UNIV TEMPE CENTER FOR SOLID STATE ELECTRONICS RESEARCH
|
| A time-resolved PL and EL system has been built to study optical and thermal properties of optoelectronic devices. The system offers very flexible capabilities for time-resolved PL and EL measurements with a temporal resolution of 1 ns over a wave-length range from 400 nm to 12 micrometers. The system is also seamlessly integrated with our existing Fourier transform infrared spectrometer for quasi-CW PL and EL measurements up to 25 micrometers. ... |
|
| New Generation Materials and Structures for Nanophotonics and Nanoelectronics |
30 APR 2006 |
102 pages |
| Authors:
Paras N. Prasad; STATE UNIV OF NEW YORK COLL AT BUFFALO
|
| This DURINT project produced high impact technical accomplishments. The notable accomplishments include building (i) new nanostructures, (ii) study of optoelectronic and magnetic properties, and (iii) fabrication of polymer based non-linear based photonic crystals and photonic circuitry, and (iv) fabrication of photodetctor as well as diffraction grating devices. On the preparation front, a modular colloidal route was devised to produce nano-heterostructures by integrating plasmonic (Au), magnetic (Fe3O4) and semiconducting (PbS or ... |
|
| Enhanced Emission Efficiency in Organic Light-Emitting Diodes Using Deoxyribonucleic Acid Complex as an Electron Blocking Layer |
28 APR 2006 |
4 pages |
| Authors:
J. A. Hagen; W. Li; A. J. Steckl; J. G. Grote; CINCINNATI UNIV OH NANOELECTRONICS LAB
|
| Enhanced electroluminescent efficiency using a deoxyribonucleic acid (DNA) complex as an electron blocking (EB) material has been demonstrated in both green- and blue-emitting organic light-emitting diodes (OLEDs). The resulting so-called BioLEDs showed a maximum luminous efficiency of 8.2 and 0.8 cd/A, respectively. The DNA-based BioLEDs were as much as 10 more efficient and 30 brighter than their OLED counterparts. |
|
| Electro Optical Properties of Copolymer Blends: Lasing, Electroluminescence and Photophysics |
15 APR 2006 |
32 pages |
| Authors:
Frank E. Karasz; MASSACHUSETTS UNIV AMHERST
|
| In this grant period we have continued our studies of the synthesis, characterization and device fabrication of electro-optically active chromophoric macromolecules. The systems studied focused on novel conjugated main chain structures with high photoluminescent and electroluminescent quantum yields. The structures incorporated fluorene containing moieties, ethynylene bonds, terphenylene derivatives, meta and ortho variants of the paraphenylene unit, and a number of derivatized phenyl units either alone or in combination. In most ... |
|
| Bragg Multiple Quantum Wells: Tunable Cavities for Optoelectronics Applications |
10 APR 2006 |
138 pages |
| Authors:
Lev Deych; Alexander Lisyansky; CITY UNIV OF NEW YORK RESEARCH FOUNDATION
|
| The main objective of the proposal was to conduct feasibility studies of Bragg Multiple Quantum Well (BMQW) structures from the point of view of their applications as tunable logical elements (switches, modulators, filters, etc) for optical and optoelectronic circuits and identify structures most suitable for such applications. As a result of this research the authors developed new approaches to computations of excitonic characteristics of quantum well structures and their response ... |
|
| Growth and Study of Novel 3-4 m Antimonide III-V Diode Lasers Operating at Room Temperature (Hole Well Laser) |
APR 2006 |
17 pages |
| Authors:
Frederic Genty; MONTPELLIER UNIV (FRANCE)
|
| This report results from a contract tasking University Montpellier 2 as follows: The objectives of this effort are to demonstrate an electrically injected Hole Well (HoW) Laser in the 3-4 m wavelength range and to obtain continuous wave operation and a high output power (>100mW) above room temperature. The tasks will be: 1. Laser design: Simulation of the structure to optimize alloy compositions and the thicknesses of the GaInSb QWs ... |
|
| Structure and Energetics of Macromolecular Systems: POSS, Metal Clusters and other Oligomeric Molecules |
31 MAR 2006 |
8 pages |
| Authors:
Michael T. Bowers; CALIFORNIA UNIV SANTA BARBARA DEPT OF CHEMISTRY AND BIOCHEMISTRY
|
| Work has been completed in three areas of research. The first is in characterization of polyhedral oligomeric silsesquioxanes (POSS) and their attachment to backbones of organic-based oligomers. Using ion mobility, we have structurally characterized a wide variety of POSS species attaining good agreement with x-ray structures when available. We have also characterized di- and tri-siloxanes, POSS cages covalently bound via oxygen bridges. Most recently we have been able to insert ... |
|
| Polymeric Smart Skin Materials: Concepts, Materials, and Devices |
31 MAR 2006 |
95 pages |
| Authors:
Larry Dalton; WASHINGTON UNIV SEATTLE DEPT OF CHEMISTRY
|
| Multi-sensor paints have been developed for detection both physical (pressure, temperature, shear, etc.) and chemical (corrosion, explosive) phenomena. Such materials have been transitions to practical applications such as wind tunnel testing and infrastructure monitoring and have also been adopted for fundamental studies of fluid dynamics and insect flight. A variety of carbon nanotube applications have been developed including nanotube actuators for both sensing and active control of surfaces, State-of-the-art OLED ... |
|
| Semiconductor YBACUO Uncooled Focal Plane Arrays |
30 MAR 2006 |
16 pages |
| Authors:
Donald Butler; Zeynep Celik-Bulter; TEXAS UNIV AT ARLINGTON DEPT OF ELECTRICAL ENGINEERING
|
| The research has developed a readout circuit design, microbolometer designs, fabricated the readout circuits utilizing the - MOSIS foundry service, tested the readout circuits, integrated microbolometers onto the readout circuit and tested microbolometers fabricated on the readout circuits. The readout circuit was designed according to the MOSIS AMI 1.6 micrometers low noise analog CMOS design rules. The readout circuits were designed using capacitive transimpedance amplifiers (CTIA) and constant current buffered ... |
|
| Self Assembled Nano-Photonic Devices Derived from Marine DNA for Opto-Electronic Applications |
30 MAR 2006 |
39 pages |
| Authors:
Naoya Ogata; OGATA RESEARCH LAB HOKKAIDO (JAPAN)
|
| Optical and photochromic properties of spiropyran-intercalated DNA-surfactant complex films were studied for optical switching. The switching speed was observed as 200-300 ms. They depended on the type of spiropyran as well as the type of surfactant. Spiropyrans containing the oxazine ring and intercalated into DNA showed a very rapid photochromic response. It also showed that photochromic response times became much faster when intensity of the excitation light increased. Various DNA-cationic ... |
|
| Development and Applications of Nanowire Nanophotonics |
23 MAR 2006 |
34 pages |
| Authors:
Charles M. Lieber; PRESIDENT AND FELLOWS OF HARVARD COLL CAMBRIDGE MA OFFICE OF SPONSORED RESEARCH
|
| The controlled and predictable synthesis of nanowires and nanowire heterostructures that serve as the basic nanoscale building blocks for photonic devices has been carried out. Nanocluster catalyzed growth was used to prepare gallium nitride based nanowire materials, including radial nanowire heterostructures in which the composition and/or doping was modulated perpendicular to the axis of a nanowire. Scanning electron microscopy and transmission electron microscopy were used to characterize the detailed structure ... |
|
| Indium Gallium Nitride/Gallium Nitride (InGaN/GaN) Nanorods Superlattice (SL) |
10 MAR 2006 |
8 pages |
| Authors:
Tae W. Kang; DONGGUK UNIV SEOUL (KOREA)
|
| This work demonstrates realization of high-brightness and high-efficiency light emitting diodes (LEDs) using dislocation-free InGaN/GaN SL Nano rods arrays (NRAs) by hydride vapor phase epitaxy (HVPE). The benefits of the InGaN/GaN supperlattice (SL) nanorod array (NRA) LEDs are examined in this work, and their characteristics are compared to those of conventional broad area (BA) LEDs. |
|
| Evaluation and Characterization of Electro-Optic Components |
06 MAR 2006 |
18 pages |
| Authors:
Christopher S. McDermitt; Frank Bucholtz; SFA INC CROFTON MD
|
| Mach-Zehnder modulators and optical switches are essential components in photonics links. This report provides an understanding of how external variables such as optical power, RF power, wavelength, and temperature independently affect the performance of these devices. For applications involving wide-temperature fluctuations, EO Space modulator AX-OK1-20-PFU-SFU-S will provide superior performance. However, for multiple wavelength applications, this advantage is mitigated by a quadrature bias drift of 0.35 volts per 10 nm. While ... |
|
| Head Mounted Alerting for Urban Operations via Tactical Information Management System |
MAR 2006 |
80 pages |
| Authors:
Susan Gottschlich; Robert Gray; Michael Daily; Ron Azuma; Youngkwan Cho; RAYTHEON CO MARLBOROUGH MA
|
| The United States military possesses unprecedented tactical alert generation capabilities but could quickly overwhelm a soldier conducting an urban operation with too much information. For this program, the authors investigated the use of a proof of concept Information Management Engine (IME) to allow a soldier to filter the information he receives, via a head mounted presentation system, through an intuitive training process. For the authors' purposes, the pieces of information ... |
|
| Terahertz (THZ) Imaging |
MAR 2006 |
53 pages |
| Authors:
Raghuveer Rao; AIR FORCE RESEARCH LAB ROME NY SIGNAL PROCESSING BRANCH
|
| Previously, the problem of Concealed Weapon Detection, CWD, was addressed in the context of detecting weapons concealed under clothing. Infrared and millimeter wave images were considered for the purpose. Infrared detection depends on the concealed weapon's temperature being significantly different from that of its surroundings. Millimeter wave detection relies on reflection from the object of interest. Passive detection is possible in many instances since MMW is present naturally and can ... |
|
| Next Generation, High Accuracy Optical Tracker for Target Acquisition and Cueing |
MAR 2006 |
12 pages |
| Authors:
Don S. Odell; Vlad Kogan; ASCENSION TECHNOLOGY CORP MILTON VT
|
| A critical need exists for a fast, cost-effective, six-degrees-of-freedom (6DOF) tracker that is immune to cockpit and helmet scatterers of magnetic/electrical field energy, vehicle vibration, and harsh lighting conditions. Magnetic and inertial tracking technologies each have limitations that make them undesirable as next-generation solutions. Optical tracking technologies, while having occlusion problems, are increasingly seen as the more attractive next-generation solution. The optical tracker, developed at Ascension Technology Corp to meet ... |
|
| Photovoltaically Powered Modulating Retroreflectors |
MAR 2006 |
7 pages |
| Authors:
R. J. Walters; J. L. Murphy; W. S. Rabinovich; G. C. Gilbreath; D. M. Wilt; M. A. Smith; M. J. Krasowski; P. P. Jenkins; D. Schelman; J. H. Warner; NAVAL RESEARCH LAB WASHINGTON DC
|
| Abstract. The development of a photovoltaically PV powered laser communication system that constitutes a miniature, highly energy efficient wireless communication technology is described. The technology is based on the direct integration of a multiquantum well (MQW) modulating retroreflector (MRR) optical communication node and a monolithically integrated module (MIM) PV power source. The MQW MRR optical data link exploits the shift in the MQW absorption peak under an applied reverse bias ... |
|
Electrooptical and Optoelectronic Devices
