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Displaying records 11 to 20 of 250 records.
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11. A deep-UV optical frequency comb at 205 nm
Topic: Physics
Published: 5/25/2009
Authors: Scott A Diddams, E Peters, P Fendel, S Reinhardt, T W Hansch, T Udem
Abstract: By frequency quadrupling a picosecond pulse train from a Ti:sapphire laser at 820 nm we generate a frequency comb at 205 nm with nearly bandwidth-limited pulses. The nonlinear frequency conversion is accomplished by two successive frequency doubling ...

12. A microscene approach to the evaluation of hyperspectral system level performance
Topic: Physics
Published: 5/18/2013
Authors: David W Allen, Ronald Resmini, Christopher Deloye
Abstract: Assessing the ability of a hyperspectral imaging (HSI) system to detect the presence of a substance or to quantify abundance requires an understanding of the many factors in the end-to-end remote sensing scenario from scene to sensor to data expl ...

13. Absolute line intensities for oxirane from 1420 to 1560 cm-1
Topic: Physics
Published: 11/15/2013
Authors: F Kwabia Tchana, M. Ngom, Agnes Perrin, Jean-Marie Flaud, Walter Joseph Lafferty, S. A. Ndiaye, El. A. Ngum
Abstract: Absolute individual line intensities of numerous transitions of the fundamental ν2 and ν10 bands of oxirane (ethylene oxide, c-C2H4O) have been measured in the 1420-1560 cm-1 region using seven high- resolution Fourier transform spectra ...

14. Absolute line intensities for the nu3 band of oxirane (C2H4O)
Topic: Physics
Published: 11/15/2013
Authors: Walter Joseph Lafferty, Jean-Marie Flaud, Fridolin Kwabia, A. Perrin, M. Ngom
Abstract: Seven Fourier transform spectra of the ν3 band of oxirane (ethylene oxide) have been recorded with different pressures and used to derive individual line intensities. These line intensities were satisfactorily fit leading to accurate transition ...

15. Absorptions Between 3000 and 5500 cm-1 of cyclic O4+ and O4- Trapped in Solid Neon
Topic: Physics
Published: 12/19/2013
Authors: Marilyn E Jacox, Warren Elwin Thompson
Abstract: Recently, gas-phase absorptions in the 3000 to 4300 cm-1 spectral region have been assigned to combination bands built on (v1 + v5) of ground-state cyc-O4+. Other gas-phase experiments identified an electronic transition of cyc-O4- complexed with an ...

16. Advances in Coherent Population Trapping for Atomic Clocks
Topic: Physics
Published: 8/10/2010
Authors: John E Kitching, Vishal Shah
Abstract: We review advances in the field of coherent population trapping (CPT) over the last decade with respect to the application of this physical phenomenon to atomic frequency references. We provide an overview of both the basic phenomenon of coherent pop ...

17. Alpha-Dot or Not: Comparison of Two Single Atom Optical Clocks
Topic: Physics
Published: 10/5/2008
Authors: Till P Rosenband, David Hume, Chin W. Chou, J.C. Koelemeij, A. Brusch, Sarah Bickman, Windell Oskay, Tara Michele Fortier, Jason Stalnaker, Scott A Diddams, Nathan Reynolds Newbury, William C Swann, Wayne M Itano, David J Wineland, James C Bergquist
Abstract: Repeated measurements of the frequency ratio of Hg^u+^ and Al^u+^ single-atom optical clocks over the course of a year yield a constraint on the possible temporal variation of the fine-structure constant a. The time variation of the measured ratio c ...

18. An examination of spectral diversity of medical scenes for hyperspectral projection
Topic: Physics
Published: 2/14/2011
Author: David W Allen
Abstract: There are numerous medical conditions which may benefit from hyperspectral imaging. The imagers used for these conditions will need to have the performance validated to ensure consistency, gain acceptance and clear regulatory hurdles. NIST has been ...

19. Ancilla assisted calibration of a measuring apparatus
Topic: Physics
Published: 6/19/2012
Authors: Alan L Migdall, Giorgio Brida, L. Ciavarella, Ivo Pietro Degiovanni, Marco Genovese, M. G. Mingolla, M. G. A. Paris, Fabrizio Piacentini, S. V. Polyakov
Abstract: The rapid development of quantum systems has enabled a wide range of novel and innovative technologies, from quantum information processing to quantum etrology and imaging [1{13], mainly based on optical systems. Precise characterization techniques o ...

20. Atomic Physics in Ion Traps
Topic: Physics
Published: 3/1/1997
Authors: C Monroe, John J Bollinger
Abstract: Ion traps allow researchers to control the position and movement of charged particles with exquisite precision, and provide a powerful way to study many atomic phenomena.

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