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Displaying 776 - 800 of 1598

VECSEL systems for generation and manipulation of trapped magnesium ions

November 8, 2016

Author(s)

Shaun C. Burd, David T. Allcock, Tomi Leinonen, Jussi-Pekka Penttinen, Daniel H. Slichter, Raghavendra Srinivas, Andrew C. Wilson, Robert Jordens, Micrea Guina, Dietrich G. Leibfried, David J. Wineland

Experiments in atomic, molecular, and optical (AMO) physics rely on lasers at many different wave- lengths and with varying requirements on spectral linewidth, power and intensity stability. Vertical external-cavity surface-emitting lasers (VECSELs), when

Circular Photogalvanic Effect in Organometal Halide Perovskite CH3NH3PbI3

November 7, 2016

Author(s)

Junwen Li, Paul M. Haney

We study the circular photogalvanic effect in the organometal halide perovskite solar cell absorber CH$_3$NH$_3$PbI$_3$. The calculated photocurrent density is about $10^{-9}$ A/W, comparable to the previously studied quantum well and bulk Rashba systems

Report for Dedicated JPSS VIIRS Ocean Color Calibration/Validation Cruise December 2015

October 30, 2016

Author(s)

Michael Ondrusek, Veronica P. Lance, Eric Stengel, Menghua Wang, Zhongping Lee, Jianwei Wei, Junfang Lin, Chuanmin Hu, Charles Kovach, David English, Jennifer Cannizzaro, Alex Gilerson, Sam Ahmed, Carlos Carrizo, Ahmed El-Habashi, Robert Foster, Matteo Ottaviani, Robert Arnone, Sherwin Ladner, Wesley Goode, Ryan Vandermeulen, Nicholas Tufillaro, Jasmine Nahorniak, Curtiss Davis, Joaquim I. Goes, Kali McKee, Scott Freeman, Joaquin E. Chaves Cedeno, Kenneth Voss, B. Carol Johnson

Mueller matrix bidirectional reflectance distribution function measurements and modeling of textured silicon surfaces

October 25, 2016

Author(s)

Thomas Germer, Martin Foldyna, Zuzana Mrazkova

Surface texturing plays an important role in trapping light in photovoltaic materials. Understanding and modeling diffuse scatter from various textured silicon surfaces should aid in increasing light trapping in these materials, as well as improving

2016 Topical Meeting on Optical Interference Coatings: Manufacturing Problem Contest

October 21, 2016

Author(s)

Catherine C. Cooksey, Daniel Poitras, Li Li, Michael Jacobson

For the Manufacturing Problem contest held in conjunction with OSAs 2016 Topical Meeting on Optical Interference Coatings, participants were asked to design and fabricate on a provided substrate a coating with very specific (and rather peculiar)

Refractive index measurements of Ge

October 20, 2016

Author(s)

John H. Burnett, Simon G. Kaplan

A program has been started at NIST to make high-accuracy measurements of the infrared (IR) index properties of technologically important IR materials, in order to provide the IR optics community with updated values for the highest-quality materials now

Scattered Light Analysis of Birefringent Coatings for Distributed Polarization Rotators

October 20, 2016

Author(s)

Katelynn A. Sharma, Thomas Germer, Christopher Smith, Jonathan Zuegel, James B. Oliver, Thomas G. Brown

We characterize scattered light in polarization optics designed to maintain uniform illumination on target during spherical direct drive fusion experiments. An optical scatter instrument is used to measure the scatter distribution in the forward and

Goniometric and hemispherical reflectance and transmittance measurements of fused silica diffusers

October 11, 2016

Author(s)

Paul Lemaillet, Heather Patrick, Thomas Germer, Leonard Hanssen, B. Carol Johnson, Georgi T. Georgiev

Fused silica diffusers, made by forming scattering centers inside fused silica glass, can exhibit desirable optical properties, such as reflectance or transmittance independent of viewing angle, spectrally flat response into the ultraviolet wavelength

Freezing Time: Dynamic Laser Tracker Measurements with the Pixel Probe using Temporal Aliasing

October 1, 2016

Author(s)

Joshua A. Gordon, Steven S. Borenstein

We present a non-contact technique for measuring objects in motion with a laser tracker without the laser tracker needing to follow the object. This method allows the dynamic state of an object to be measured while, to the laser tracker the object appears

A Library to Enable the Modeling of Optical Imaging of Finite Multi-Line Arrays.

September 30, 2016

Author(s)

Mark Alexander Henn, Bryan M. Barnes

The dataset contains several MATLAB files and input files for the software package JCMsuite that enable the modeling of optical imaging of finite multi-line arrays. (Certain commercial materials are identified in order to specify the experimental procedure

Optimizing Subfield Targets for Nanoscale Quantitative Optical Imaging

September 29, 2016

Author(s)

Mark Alexander Henn, Bryan M. Barnes, Hui Zhou, Martin Y. Sohn, Richard M. Silver

The full 3-D scattered field above finite sets of features has been shown to contain a continuum of spatial frequency information, and with novel optical microscopy techniques and electromagnetic modeling, deep-subwavelength geometrical parameters can be

Ultrafast time-resolved hard x-ray emission spectroscopy on a table top

September 27, 2016

Author(s)

Luis Miaja Avila, Galen C. O'Neil, Young Il Joe, Bradley K. Alpert, Niels Damrauer, William B. Doriese, Steven Fatur, Joseph W. Fowler, Gene C. Hilton, Ralph Jimenez, Carl D. Reintsema, Daniel R. Schmidt, Kevin L. Silverman, Daniel S. Swetz, Hideyuki Tatsuno, Joel N. Ullom

Chemical reactions driven by light are fundamental to biology and a source of inspiration for engineering materials to perform tasks such as solar energy harvesting and data storage. Observing and understanding photodynamics requires experimental tools

Step beyond Kohler illumination analysis for far-field imaging: Angular illumination asymmetry (ANILAS) maps

September 21, 2016

Author(s)

Ravikiran Attota

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