Publications Portal

You searched on:
Topic Area: Physics

Displaying records 11 to 20 of 631 records.
Resort by: Date / Title

11. Hybrid Electro-Optically Modulated Microcombs
Topic: Physics
Published: 12/28/2012
Authors: Pascal Patrice Del'Haye, Scott Brian 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://nist.gov/manuscript-publication-search.cfm?pub_id=911745

12. 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://nist.gov/manuscript-publication-search.cfm?pub_id=912125

13. 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://nist.gov/manuscript-publication-search.cfm?pub_id=910557

14. Phase-Noise Measurement System for the Terahertz-Band
Topic: Physics
Published: 11/30/2012
Authors: Jason Anthony 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://nist.gov/manuscript-publication-search.cfm?pub_id=910549

15. Determination of the 5d6s 3D1 state lifetime and blackbody radiation clock shift in Yb
Topic: Physics
Published: 11/29/2012
Authors: Kyle Patrick 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://nist.gov/manuscript-publication-search.cfm?pub_id=911985

16. 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://nist.gov/manuscript-publication-search.cfm?pub_id=910335

17. Recent Calibrations of UTC(NIST) and UTC(USNO)
Topic: Physics
Published: 11/26/2012
Authors: Victor Shufang Zhang, Thomas Edward Parker, Russell Bumgarner, Jonathan Hirschauer, Angela Mckinley, Stephen Mitchell, Ed Powers, Jim Skinner, Demetrios Matsakis
Abstract: The National Institute of Standards and Technology (NIST) and the United States Naval Observatory (USNO) use GPS common-view, carrier-phase time transfer and Two Way Satellite Time and Frequency Transfer (TWSTFT, also known as TWSTT) techniques in ou ...
http://nist.gov/manuscript-publication-search.cfm?pub_id=912837

18. Replicating UTC(NIST) at Remote Sites
Topic: Physics
Published: 11/26/2012
Authors: Michael A Lombardi, Andrew N Novick, J. Mauricio Lopez-Romero, Rodrigo Ramos
Abstract: The National Institute of Standards and Technology (NIST) is deploying disciplined oscillators that are referenced to the UTC(NIST) time scale through common-view observations of Global Positioning System (GPS) satellites. We present measurement res ...
http://nist.gov/manuscript-publication-search.cfm?pub_id=912711

19. Ultra-low noise regenerative frequency divider
Topic: Physics
Published: 11/11/2012
Authors: Archita Hati, Craig W Nelson, Corey A. Barnes, Danielle Grace Lirette, Jason Anthony DeSalvo, David Allan Howe
Abstract: We designed ultra-low noise regenerative divider-by-2 circuits that operate at input frequencies of 20 MHz and 10 MHz. We achieved residual output-referred single-sideband phase noise below -162 dBc/Hz at 10 Hz offset for a single divider at these f ...
http://nist.gov/manuscript-publication-search.cfm?pub_id=910794

20. Infrared hemispherical reflectance of carbon nanotube mats and arrays in the 5 µm to 50 µm wavelength region
Topic: Physics
Published: 11/1/2012
Authors: Chris Chunnilall, Aric Warner Sanders, John H Lehman, Evangelos Theocharous
Abstract: We present the absolute infrared (5 {u}m to 50 {u}m) hemispherical reflectance of films produced from commercially available carbon nanotubes. Data were obtained using the upgraded NPL directional- hemispherical reflectance measurement facility. A b ...
http://nist.gov/manuscript-publication-search.cfm?pub_id=910058