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You searched on: Topic Area: Time and Frequency Sorted by: title

Displaying records 11 to 20 of 26 records.
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11. Measurement and real-time cancellation of vibration-induced phase noise in a cavity-stabilized laser
Topic: Time and Frequency
Published: 8/30/2010
Authors: Michael J. (Michael) Thorpe, David R Leibrandt, Tara Michele Fortier, Till P Rosenband
Abstract: We demonstrate a method to measure and actively reduce the coupling of vibrations to the phase noise of a cavity-stabilized laser. This method uses the vibration noise of the laboratory environment rather than active drive to perturb the optical cav ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905732

12. NIST Time and Frequency Bulletin
Series: NIST Interagency/Internal Report (NISTIR)
Topic: Time and Frequency
Published: 1/5/2010
Author: Eyvon Petty
Abstract: The Time and Frequency Bulletin provides information on performance of time scales and a variety of broadcasts (and related information) to users of the NIST services)
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904643

13. Operation of an optically coherent frequency comb outside the metrology lab
Topic: Time and Frequency
Published: 3/13/2014
Authors: Laura C Sinclair, Ian R Coddington, William C Swann, Archita Hati, Kana Iwakuni, Nathan Reynolds Newbury
Abstract: Frequency combs can support cutting-edge measurements in areas that include optical clocks and oscillators, high-accuracy frequency and time transfer, precision spectroscopy from the UV to THz regimes, high-accuracy LIDAR, precise microwave photonic ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914649

14. Optical frequency stabilization of a 10 GHz Ti:sapphire frequency comb by saturated absorption spectroscopy in 87Rubidium
Topic: Time and Frequency
Published: 11/4/2009
Authors: Dirk Heinecke, Albrecht Bartels, Tara Michele Fortier, Danielle Braje, Leo Hollberg, Scott A Diddams
Abstract: The high power per mode of a recently-developed 10 GHz femtosecond Ti:sapphire frequency comb permits nonlinear Doppler-free saturation spectroscopy in 87Rubidium with a single mode of the comb. We use this access to the natural linewidth of the Rub ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903059

15. Optical phase noise from atmospheric fluctuations and its impact on optical time-frequency transfer
Topic: Time and Frequency
Published: 2/5/2014
Authors: Laura C Sinclair, Fabrizio Raphael Giorgetta, William C Swann, Esther Baumann, Ian R Coddington, Nathan Reynolds Newbury
Abstract: The time of flight for a laser beam through the atmosphere will fluctuate as the path-averaged index of refraction varies with atmospheric turbulence, air temperature, and pressure. We measure these fluctuations by transmitting optical pulses fro ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=915083

16. Optical two-way time and frequency transfer over free space
Topic: Time and Frequency
Published: 4/28/2013
Authors: Fabrizio Raphael Giorgetta, William C Swann, Laura C Sinclair, Esther Baumann, Ian R Coddington, Nathan Reynolds Newbury
Abstract: The transfer of high-quality time-frequency signals between remote locations underpins many applications, including precision navigation and timing, clock-based geodesy, long-baseline interferometry, coherent radar arrays, tests of general relati ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912449

17. Phase-lock Loops in Vibration Environments
Topic: Time and Frequency
Published: 11/16/2009
Authors: Archita Hati, Craig W Nelson, David Allan Howe
Abstract: A popular scheme for achieving low phase noise across a large range of offset frequencies is to employ an oscillator at an output frequency with low far-from-carrier noise that is phase-locked to a reference that has low close-to-carrier noise. We i ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904373

18. Searching for applications with a fine-toothed comb
Topic: Time and Frequency
Published: 4/1/2011
Author: Nathan Reynolds Newbury
Abstract: Frequency combs, like many ground-breaking technologies, are simple in concept; they results from the spectrum of any regular train of optical pulses. What is remarkable is that this simple picture can be actually realized in a number of different ex ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907915

19. Stabilization of the offset frequency of an all polarization-maintaining fiber erbium frequency comb
Topic: Time and Frequency
Published: 6/9/2013
Authors: Laura C Sinclair, Ian R Coddington, William C Swann, Nathan Reynolds Newbury
Abstract: We demonstrate a completely polarization-maintaining fiber frequency comb operating at a 200 MHz repetition rate and show initial phase-locking of the carrier-envelope offset frequency. This design is compatible with a robust, fieldable frequency ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913273

20. The SIM Time Network
Topic: Time and Frequency
Published: 3/1/2011
Authors: Michael A Lombardi, Andrew N Novick, J. Mauricio Lopez-Romero, Francisco Jimenez, Eduardo de Carlos Lopez, Jean-Simon Boulanger, Raymond Pelletier, Ricardo de Carvalho, Raul Solis, Harold Sanchez, Carlos Andres Quevedo, Gregory Pascoe, Daniel Perez, Eduardo Bances, Leonardo Trigo, Victor Masil, Henry Postigo, Anthony Questelles
Abstract: The Sistema Interamericano de Metrologia (SIM) is a regional metrology organization (RMO) whose members are the national metrology institutes (NMIs) located in the 34 nations of the Organization of American States (OAS). The SIM/OAS region extends t ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905218



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