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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

Abundance estimation of solid and liquid mixtures in hyperspectral imagery with albedo-based and kernel-based approaches

September 19, 2016

Author(s)

David W. Allen, Ronald G. Resmini, Robert S. Rand

This study investigates methods for characterizing materials that are mixtures of granular solids, or mixtures of liquids, which may be linear or non-linear. Linear mixtures of materials in a scene are often the result of areal mixing, where the pixel size

PRELIMINARY RESULTS OF BTDF CALIBRATION OF TRANSMISSIVE SOLAR DIFFUSERS FOR REMOTE SENSING

September 19, 2016

Author(s)

Catherine C. Cooksey, Georgi T. Georgiev, Leibo Ding, James J. Butler

Satellite instruments operating in the solar wavelength region require accurate and precise determination of the optical properties of their diffusers used in pre-flight and post-flight calibrations. The majority of recent and current space instruments use

Interaction of aerosol particle with a standing wave optical field

September 16, 2016

Author(s)

John J. Curry

Trajectories of spherical dielectric particles carried across an optical standing wave by a flowing medium areinvestigated. Trajectories are determined by a three-dimensional Monte Carlo calculation that includes drag forces, Brownian motion, and optical

Optical Sorting of Dielectric Spheres in a Standing Wave Calculated with Effective Velocities and Diffusion Constants

September 7, 2016

Author(s)

Zachary H. Levine, John J. Curry

Recently, as part of a study of the ability of a Gaussian standing-wave interference field to sort small dielectric particles entrained in a moving fluid, we implemented a two-length-scale method to determine the trajectories of the particles. In the first

OptSortSph: Optical Sorting in a Standing Wave Field Calculated with Effective Velocities and Diffusion Constants

September 7, 2016

Author(s)

Zachary H. Levine, John J. Curry

Recently, as part of a study of the ability of a Gaussian standing-wave interference field to sort small dielectric spheres entrained in a moving fluid, we implemented a two-length-scale method to determine the trajectories of the particles. In the first

Surface plasmon resonance microscopy: achieving a quantitative optical response

September 7, 2016

Author(s)

Alexander Peterson, Michael Halter, Anne Plant, John Elliott

Surface plasmon resonance imaging (SPRI) allows real-time label-free imaging based on index of refraction, and changes in index of refraction at an interface. SPRI can be carried out on a microscope by launching light into a sample, and collecting

A Thickness-Unknown Method for the Low-Loss Dielectric Characterization from Free-Space Scattering Measurements

September 1, 2016

Author(s)

Sung Kim, David R. Novotny, Joshua A. Gordon, Jeffrey R. Guerrieri

A free-space measurement method is presented for the characterization of low-loss dielectric materials at millimeter-wave (MMW) frequencies that does not require any assumption of a priori knowledge of the sample thickness. The present method first employs

Bidirectional scattering distribution function measurements from volume diffusers: Correction factors and associated uncertainties

September 1, 2016

Author(s)

Thomas A. Germer

We consider the effect of volume diffusion on measurements of the bidirectional scattering distribution function (BSDF) when a finite distance is used for the solid angle defining aperture. We derive expressions for correction factors that can be used when

Ultra-low-noise monolithic mode-locked solid-state laser

September 1, 2016

Author(s)

T D. Shoji, W Xie, Kevin L. Silverman, Ari Feldman, Todd E. Harvey, Richard Mirin, Thomas Schibli

Low-noise, high-repetition-rate mode-locked solid-state lasers are attractive for precision measurement and microwave generation, but the best lasers in terms of noise performance still consist of complex, bulky optical setups, which limits their range of

Ambient-condition growth of high-pressure phase centrosymmetric crystalline KDP microstructures for optical second harmonic generation

August 26, 2016

Author(s)

Lu Deng, Edward W. Hagley, Yan Ren

Noncentrosymmetric potassium dihydrogen phosphate (KH2PO4 or KDP) in the tetragonal crystal phase is arguably the most extensively studied nonlinear optical crystal in history. It has prolific applications ranging from simple laser pointers to laser

Ontology-based laser and thermal metamodels for metal-based additive manufacturing

August 24, 2016

Author(s)

Paul Witherell, Ibrahim Assouroko, Roh Byeong-Min, Timothy Simpson, Soundar Kumara

Additive manufacturing (AM) is creating renewed interest in manufacturing thanks to the freedom it provides to design and innovate. One of the biggest challenges in AM is inadequate repeatability in product quality and reliability of the process for

Broadband Coherent Anti-Stokes Raman Scattering

August 11, 2016

Author(s)

Charles H. Camp

Broadband coherent anti-Stokes Raman scattering (BCARS) microspectroscopy is a unique label-free imaging modality that provides detailed chemical information at each pixel. In minutes, this technique captures a hyperspectral cube that co-registers