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Conferences

Optical Fiber Vibration and Acceleration Model

May 29, 2007

Author(s)

Neil Ashby, David A. Howe, Jennifer A. Taylor, Archita Hati, Craig W. Nelson

We derive expressions for the group velocities of transverse electric and transverse magnetic electromagnetic waves in a stretched single-mode fiber. Stretching...

Self-Injection Locking of a Low-Power Microwave Oscillator by Using 4-Wave Mixing in an Atomic Vapor

May 29, 2007

Author(s)

Alan Brannon, Vladislav Gerginov, V Shah, Svenja A. Knappe, Z Popovic, Leo W. Hollberg, John E. Kitching

We demonstrate self-injection locking of a compact microwave oscillator by using feedback generated from four-wave mixing in an atomic vapor. The four-wave...

Microwave optoelectronic oscillator with optical gain

May 29, 2007

Author(s)

Craig Nelson, Archita Hati, David A. Howe, W Zhou

Optoelectronic oscillators (OEO) are unique compared to radio-frequency (RF) oscillators in that they do not fundamentally require a RF gain element in order to...

Active Vibration-induced PM Noise Control in Optical Fibers: Preliminary Studies

May 29, 2007

Author(s)

David A. Howe, Archita Hati, Craig Nelson, Jennifer A. Taylor, Neil Ashby

Vibration causes mechanical distortions in fiber-optic transmission lines that induce time (phase) fluctuations. RF systems are increasingly using optical...

Testing Local Position Invariance with Four H Masers AND Four Cs Fountains

May 28, 2007

Author(s)

Neil Ashby, Thomas P. Heavner, Steven R. Jefferts, A Radnaev, Y Dudin

We report the most sensitive tests to date of the assumption of local position invariance (LPI) underlying general relativity, based on a seven year comparison...

Fiber laser-based frequency combs with high relative frequency stability

May 28, 2007

Author(s)

Nathan R. Newbury, William C. Swann, Ian R. Coddington, J. C. Bergquist, Scott Diddams, Luca Lorini

We describe our current low-noise fiber-laser frequency comb and present measurements of its residual instability. Through a comparison with a Ti:Sapphire...

A Comparison of Pooled and Sampled Relevance Judgments in the TREC 2006 Terabyte Track

May 27, 2007

Author(s)

Ian M. Soboroff

Pooling is the most common technique used to build modern test collections. Evidence is mounting that pooling may not yield reusable test collections for very...

AC-Mode SW-IR Radiation Thermometers for Measurement of Ambient Temperatures

May 25, 2007

Author(s)

George P. Eppeldauer, Howard W. Yoon

Recent improvements in the fabrication technology of short-wave infrared (SWIR) quantum detectors opened a new era in radiation thermometry. Ambient and higher...

Ultrafast Chelation Dynamics of Model Photoswitches: Arene Chromium Tricarbonyl Derivatives With Pendant Sulfides

May 25, 2007

Author(s)

Tung T. To, Charles Duke, T J. Burkey, Edwin J. Heilweil

The chelation dynamics of three new [Cr{?6-C6H5C(O)R}(CO)3] complexes 1 (R = CH2(SCH3)), 2 (R = CH(SCH3)2), and 3 (R = C(SCH3)3) in room temperature heptane...

AN ANALYSIS PROCEDURE FOR QUANTIFYING THE FRAGMENTATION BEHAVIOR OF 2-D MULTI-FIBER ARRAYS

May 24, 2007

Author(s)

Jae Hyun Kim, Walter G. McDonough, Gale A. Holmes

Metrology and robustness of bright-room contrast measurements

May 23, 2007

Author(s)

Edward F. Kelley

Bright-room contrast measurements methods are being proposed in standards committees to characterize flat panel displays for living-room ambient environments...

Electrochemical measurements of diffusion through cardiac muscle tissue engineering scaffolds

May 18, 2007

Author(s)

Kavita Jeerage, Stephanie M. LaNasa, Damian S. Lauria, Stephanie J. Bryant, Andrew Slifka

Cardiomyocytes, the beating cells of the heart, are highly dependent on oxygen for survival and function. Early work in cardiac muscle tissue engineering...

Measuring the Performance of Urban Search and Rescue Robots

May 17, 2007

Author(s)

Elena R. Messina, Adam S. Jacoff

The Department of Homeland Security is sponsoring development of standards for urban search and rescue (USAR) robots. This program is being coordinated by the...

Database-Assisted Design of Low-Rise Buildings for Wind Loads: Recent Developments and Comparisons With ASCE/SEI 7-05

May 17, 2007

Author(s)

Joseph A. Main

While specialized wind tunnel tests are routinely conducted in the design of high-rise buildings, constraints on project budgets and timelines generally do not...

Comparative Inter-Laboratory Study of Wind Loading on Low Industrial Buildings

May 16, 2007

Author(s)

Bogusz Bienkiewicz, Munehito Endo, Joseph Main, William P. Fritz

A progress report on an inter-laboratory comparative study of approach flow and wind pressures on low buildings is presented. The wind tunnel data generated at...

Characterizing Unmanned System Autonomy:Contextual Autonomous Capability and Level of Autonomy Analyses

May 15, 2007

Author(s)

Hui-Min Huang, K Pavek, Mark Ragon, Jeffry Jones, Elena R. Messina, James S. Albus

The Autonomy Levels for Unmanned Systems (ALFUS) workshop series was convened to address the autonomous nature of unmanned, robotic systems, or unmanned systems...

Calibrating Laser Vacuum Wavelength With a GPS-Based Optical Frequency Comb

May 15, 2007

Author(s)

Jack A. Stone Jr., Liang Lu, Patrick F. Egan

The Global Positioning System (GPS) can deliver an exceptionally accurate frequency standard to any point in the world. When we use the GPS signal to control an...

Single Molecule Mass Spectrometry in Solution Using a Solitary Nanopore

May 15, 2007

Author(s)

Joseph W. Robertson, Claudio G. Rodrigues, Oleg V. Krasilnikov, Vincent M. Stanford, Kenneth A. Rubinson, John J. Kasianowicz

A solitary protein nanometer-scale pore provides the basis for single molecule mass spectrometry in solution. Individual poly(ethylene glycol) molecules of...

Development of Surgical Lighting for Enhanced Color Contrast

May 14, 2007

Author(s)

Maritoni A. Litorja, Steven W. Brown, Maria E. Nadal, David W. Allen, Alexander Gorbach

The National Institute of Standards and Technology and the National Institutes of Health have started a collaborative study on the development of lighting that...

Access Control Policy Combinations for the Grid Using the Policy Machine

May 14, 2007

Author(s)

Vincent C. Hu, David F. Ferraiolo, Karen A. Scarfone

Many researchers have tackled the architecture and requirements aspects of grid security, concentrating on the authentication or authorization mediation instead...

AC-mode SW-IR radiation thermometers for measurement of ambient temperatures

May 10, 2007

Author(s)

George P. Eppeldauer, Howard W. Yoon

On tuning the design of an evolutionary algorithm for machining optimization problem

May 9, 2007

Author(s)

Jean-Louis Vigouroux, Sebti Foufou, Laurent Deshayes, James J. Filliben, Lawrence A. Welsch, Alkan Donmez

In this paper, a methodology for tuning the design of an evolutionary algorithm (EA) is presented. An EA for solving machining optimization probfems having...

Modeling the Effect of Line Profile Variation on Optical Critical Dimension Metrology

May 7, 2007

Author(s)

Thomas A. Germer

We investigate the effects that variations in profile have on specular and diffuse reflectance from a grating consisting of parallel lines. We investigate, as...

Modeling and Analysis of Scatterometry Signatures for Optical Critical Dimension Reference Material Applications

May 7, 2007

Author(s)

Heather J. Patrick, Thomas A. Germer, Michael W. Cresswell, Richard A. Allen, Ronald G. Dixson, Michael R. Bishop

We use an optical critical dimension technique, matching modeled to measured scatterometry signatures, to obtain critical dimension linewidth on grating targets...

Dynamic Mechanical Analysis of the Glassy State Response of a Sub-Tg Annealed Model Epoxy Network

May 7, 2007

Author(s)

Gale A. Holmes

Using dynamic mechanical analyzers the relaxation behavior of a loosely cross-linked model epoxy resin was investigated before and after room temperature aging...

Quantum key distribution with high-speed superconducting single-photon detectors

May 6, 2007

Author(s)

Robert Hadfield, Jonathan L. Habif, Lijun Ma, Alan Mink, Xiao Tang, Sae Woo Nam

We explore the potential of high-speed nanowire superconducting single-photon detectors for quantum key distribution in fiber, over long distances (at 1550 nm)...

Multi-octave optical coherence spanning hundreds of meters

May 6, 2007

Author(s)

Ian R. Coddington, Luca Lorini, William C. Swann, J. C. Bergquist, Y. Le Coq, C. W. Oates, Qudsia Quraishi, Jason Stalnaker, Scott Diddams, Nathan R. Newbury

We demonstrate coherent transfer of optical signals with radian level noise (in a 3.5 MHz bandwidth) through a series of laser systems spanning from 657 nm to...

Photon-number-resolving capabilities of a semiconductor quantum dot, optically gated, field-effect transistor

May 6, 2007

Author(s)

Eric Gansen, Mary A. Rowe, Marion Greene, Danna Rosenberg, Todd E. Harvey, Mark Su, Robert Hadfield, Sae Woo Nam, Richard Mirin

We demonstrate the photon-number-resolving capabilities of a novel quantum dot, optically gated, field-effect transistor cooled to 4 K. Peaks are observed in...

Residual stability of a fiber-based frequency comb

May 6, 2007

Author(s)

William C. Swann, Ian R. Coddington, Luca Lorini, Jason Stalnaker, J. C. Bergquist, Scott Diddams, Nathan R. Newbury

Abstract: We present measurements of the residual frequency stability across a fiber frequency comb by comparison through a Ti:sapphire frequency comb. We find...

Fiber-laser frequency combs

May 6, 2007

Author(s)

Nathan R. Newbury, William C. Swann

We discuss the contributions to the linewidth and frequency noise of the individual modes of a mode-locked fiber laser. Much of this noise can be suppressed...

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