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Topic Area: Physics

Displaying records 71 to 80 of 705 records.
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71. Time Transfer Using a Satellite Navigation System
Topic: Physics
Published: 1/1/2013
Author: Judah Levine
Abstract: Article does not have an abstract. It was solicited by the editors of the yearbook and was written based on their detailed comments about the topics to be covered, the technical detail, etc. It is intended for high-school students and contains materi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912102

72. Hybrid Electro-Optically Modulated Microcombs
Topic: Physics
Published: 12/28/2012
Authors: Pascal Patrice Del'Haye, Scott B Papp, Scott A Diddams
Abstract: Optical frequency combs based on mode-locked lasers have proven to be invaluable tools for a wide range of applications in precision spectroscopy and metrology. Recently, a novel principle of optical frequency comb generation in whispering gallery mo ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911745

73. Ultrafast element-specific magnetization Dynamics of complex magnetic materials on a table-top
Topic: Physics
Published: 12/21/2012
Authors: Thomas J Silva, Justin M Shaw, Hans Toya Nembach, Chan La-O-Vorakiat, Henry C. Kapteyn, Margaret M. Murnane, Stefan Mathias, Roman Adam, Patrik Grychtol, Martin Aeschlimann, Claus M. Schneider, Emrah Turgut, Dennis Rudolf
Abstract: We review recent progress in femtosecond magnetization dynamics probed by extreme ultraviolet pulses from high-harmonic generation. In a transverse magneto-optical Kerr geometry, we establish an ultrafast, element-specific experimental capability - ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904322

74. A Low-Power, High-Sensitivity Micromachined Optical Magnetometer
Topic: Physics
Published: 12/11/2012
Authors: Rahul Ramdas Mhaskar, Svenja A Knappe, John E Kitching
Abstract: We demonstrate a fiber-optically coupled optical magnetometer based on a microfabricated ^u87^Rb vapor cell in a micromachined silicon sensor head. The cell is optically heated with light at 1.5 mm brought to the cell through an optical fiber and abs ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912125

75. Single bead detection with a NMR micro capillary probe
Topic: Physics
Published: 12/6/2012
Authors: Yoshihiro Nakashima, Michael Anthony Boss, Stephen E Russek, John M Moreland
Abstract: We have developed a nuclear magnetic resonance (NMR) microcapillary probe for the detection of single magnetic microbeads. The geometry of the probe has been optimized so that the signal from the background water has a similar magnitude compared to t ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910557

76. Phase-Noise Measurement System for the Terahertz-Band
Topic: Physics
Published: 11/30/2012
Authors: Jason A. (Jason) DeSalvo, Archita Hati, Craig W Nelson, David Allan Howe
Abstract: We present initial phase noise measurements in support of terahertz electronics, in the frequency range generally regarded as 0.1 to 10 THz. Using digital phase noise measurement techniques and an even-harmonic mixer, we achieve a phase noise measur ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910549

77. Determination of the 5d6s 3D1 state lifetime and blackbody radiation clock shift in Yb
Topic: Physics
Published: 11/29/2012
Authors: Kyle P Beloy, Jeffrey Aaron Sherman, Nathan D. Lemke, Nathan Morris Bjork Hinkley, Christopher W Oates, Andrew D Ludlow
Abstract: The Stark shift of the ytterbium optical clock transition due to room temperature blackbody radiation is dominated by a static Stark effect, which was recently measured to high accuracy [J. A. Sherman et al., Phys. Rev. Lett. 108, 153002 (2012)]. How ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911985

78. High Bandwidth Optical Magnetometer
Topic: Physics
Published: 11/28/2012
Authors: Ricardo Jimenez Martinez, William C. Griffith, Svenja A Knappe, John E Kitching, Mark Prouty
Abstract: We demonstrate a scalar 87Rb optical magnetometer that retains magnetic eld sensitivities below 10 pT/{square root}Hz over 3dB bandwidths of 10 kHz in an ambient eld Bo = 11.4 microT and using a measurement volume of 1 mm^u3^. The magnetometer operat ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910335

79. A COLD-ATOM CLOCK BASED ON COHERENT POPULATION TRAPPING
Topic: Physics
Published: 11/26/2012
Authors: Elizabeth A Donley, Francois-Xavier R. Esnault, Eric Michael Blanshan, John E Kitching
Abstract: A compact cold-atom clock based on coherent population trapping is being developed. The clock aims to ultimately achieve a timing uncertainty of a few nanoseconds per day. Here we present an initial evaluation of the three main systematic frequency ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912842

80. Enabling accurate differential calibration of modern GPS receivers
Topic: Physics
Published: 11/26/2012
Authors: Stefania Romisch, Victor Shufang Zhang, Thomas Edward Parker, Steven R Jefferts
Abstract: The difference between the local time reference and a GNSS receiver's internal time base is an essential contributor to the calibration of that receiver when used as a timing device. In the past, in the absence of a PPS output signal provided by th ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913227



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