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Displaying records 91 to 100 of 244 records.
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91. A circular dielectric grating for vertical extraction of single quantum dot emission
Topic: Physics
Published: 7/25/2011
Authors: Marcelo Ishihara Davanco, Matthew T. Rakher, Dieter Schuh, Antonio Badolato, Kartik A Srinivasan
Abstract: We demonstrate a suspended circular grating composed of partially etched annular trenches in a thin GaAs membrane, designed for e±cient and moderately broadband ( approx. 5 nm) extraction of emission from single InAs quantum dots. Simulations indic ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908236

92. Increased responsivity pyroelectric radiometer with dome input and temperature control
Topic: Physics
Published: 7/18/2011
Authors: George P Eppeldauer, Jinan Zeng, Leonard M Hanssen
Abstract: Pyroelectric radiometers with noise-equivalent-power (NEP) close to 1 nW/Hz¿ have been developed to measure less than 1 microwatt radiant power levels at room temperature to 25 micrometer. The radiometers will be used as transfer standards for routin ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908993

93. Dimensional Analysis of Through Silicon Vias Using the TSOM Method
Topic: Physics
Published: 7/12/2011
Authors: Ravikiran Attota, Andrew Rudack
Abstract: There is a great need for accurate, truly-3D metrology solutions that can be used for analysis of high aspect ratio features such as through-silicon-vias (TSVs). Through-focus scanning optical microscopy (TSOM) is an optical metrology method that pr ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909226

94. State Resolved THz Spectroscopy and Dynamics of Crystalline Peptide/Water Systems
Topic: Physics
Published: 7/11/2011
Authors: Zeeshan Ahmed, Shin G. Chou, Karen M. Siegrist, David F Plusquellic
Abstract: State resolved THz studies of crystalline peptides and their hydrates have provided precise measures of the infrared active phonon modes that reflect motions on the longest possible length scales in these systems. The impact of co-crystallized water ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907455

95. Generation of Ultrastable microwaves via optical frequency division
Topic: Physics
Published: 6/26/2011
Authors: Tara Michele Fortier, Matthew Steven Kirchner, Jennifer A. Taylor, James C Bergquist, Yanyi Jiang, Andrew D Ludlow, Christopher W Oates, Till P Rosenband, Scott A Diddams, Franklyn J Quinlan, Nathan D. Lemke
Abstract: A frequency-stabilized femtosecond laser optical frequency comb serves as a source of microwave signals having very low close-to-carrier phase noise. Comparison of two independent systems shows combined absolute phase noise of -100 dBc/Hz at an o ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906753

96. Imaging of nanoscale charge transport in bulk heterojunction solar cells
Topic: Physics
Published: 6/17/2011
Authors: Behrang H Hamadani, Nadine Emily Gergel-Hackett, Paul M Haney, Nikolai B Zhitenev
Abstract: We have studied the local charge transport properties of organic bulk heterojunction solar cells based on the blends of poly(3-hexylthiophene) (P3HT) and phenyl-C61-butyric acid methyl ester (PCBM) with a photoconductive atomic force microscope (PCAF ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905890

97. Indistinguishability of single photons from dissimilar single-photon sources
Topic: Physics
Published: 6/14/2011
Authors: Sergey V Polyakov, Glenn Scott Solomon, Edward B. (Edward) Flagg, Alan L Migdall, Andreas Muller
Abstract: In quantum mechanics, particles in identical states are indistinguishable, giving rise to effects with no classical analog. For instance, the bosonic nature of light insures that upon interference two indistinguishable photons will coalesce into a s ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909805

98. A balanced homodyne detector and local oscillator shaping for measuring optical Schr{omlat}dinger cat states
Topic: Physics
Published: 5/12/2011
Authors: Thomas Gerrits, Scott C Glancy, Sae Woo Nam
Abstract: We present our implementation of an optical homodyne detector used to measure optical Schr{omlat}dinger cat states. We show how we minimized the losses and mode-mismatches associated with homodyne detection, which become important when measuring ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908299

99. Microresonator based optical frequency combs
Topic: Physics
Published: 4/29/2011
Authors: Scott A Diddams, T. J. Klippenberg
Abstract: Optical frequency combs based on mode-locked laser sources have provided unprecedented measurement capabilities for optical frequencies, enabling new applications in a wide range of topics that include atomic clocks, ultracold gases, molecular finge ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906925

100. Small-sized dichroic atomic vapor laser lock
Topic: Physics
Published: 4/21/2011
Authors: Svenja A Knappe, Changmin Lee, Geoffrey Z. Iwata, Eric Corsini, James M. Higbie, Micah P. Ledbetter, Dimitry Budkerl
Abstract: Two, lightweight diode laser frequency stabilization systems designed for experiments in the field are described. Similar to a previous design, magnetic-field lines are contained within a magnetic shield enclosing permanent magnets an ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907510



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