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Topic Area: Optical Physics

Displaying records 11 to 20 of 59 records.
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11. Experimental demonstration of a receiver beating the standard quantum limit for multiple nonorthogonal coherent-state discrimination
Topic: Optical Physics
Published: 1/6/2013
Authors: Francisco Elohim Becerra Chavez, Jingyun Fan, Gerald Baumgartner, Julius Goldhar, Jonathan Kosloski, Alan L Migdall
Abstract: The measurement of the state of a quantum system with inherent quantum uncertainty (noise) approaching the ultimate physical limits is of both technological and fundamental interest. Quantum noise prevents any mutually nonorthogonal quantum states ...

12. Ultrafast element-specific magnetization Dynamics of complex magnetic materials on a table-top
Topic: Optical 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 - ...

13. Remote sensing of chiral signatures on Mars
Topic: Optical Physics
Published: 11/1/2012
Authors: William Sparks, James H. Hough, Thomas Avery Germer, Frank Robb, Ludmilla Kolokolova
Abstract: We describe circular polarization as a remote sensing diagnostic of chiral signatures which may be applied to Mars. The remarkable phenomenon of homochirality provides a unique biosignature which can be amenable to remote sensing through circular ...

14. Quasianalytical modal approach for computing Casimir interactions in periodic nanostructures
Topic: Optical Physics
Published: 10/3/2012
Authors: Francesco Intravaia, Paul S Davids, Ricardo Decca, Vladimir A Aksyuk, Daniel Lopez, Diego A. R. Dalvit
Abstract: We present an almost fully analytical technique for computing Casimir interactions between 1D periodic lamellar gratings based on a modal approach. Our method improves on previous work on Casimir modal approaches for nanostructures by using the exa ...

15. Book Review: Nonlinear Laser Dynamics: From Quantum Dots to Cryptography
Topic: Optical Physics
Published: 9/24/2012
Author: Gregg M. Gallatin

16. Performance of the NIST goniometer with a broad-band source and multichannel CCD based spectrometer
Topic: Optical Physics
Published: 9/20/2012
Authors: Vyacheslav Borisovich Podobedov, Maria E Nadal, Carl C Miller

17. A versatile light-emitting-diode-based spectral response measurement system for photovoltaic device characterization
Topic: Optical Physics
Published: 6/29/2012
Authors: Behrang H Hamadani, John F Roller, Brian P Dougherty, Howard W Yoon
Abstract: An absolute differential spectral response measurement system for solar cells is presented. The system couples an array of light emitting diodes (LEDs) with an optical waveguide to provide large area illumination. Two unique yet complementary measur ...

18. Demonstration of Superluminal Images
Topic: Optical Physics
Published: 6/19/2012
Authors: Ryan Thomas Glasser, Ulrich Vogl, Paul D Lett
Abstract: Optical pulse propagation with group velocities larger than the speed of light in vacuum, c, or negative, have been demonstrated theoretically and experimentally in a variety of systems [1‹5]. The anomalous dispersion required for generating ,fastŠ l ...

19. Stimulated Generation of Superluminal Light Pulses via Four-wave Mixing
Topic: Optical Physics
Published: 4/26/2012
Authors: Ryan Thomas Glasser, Ulrich Vogl, Paul D Lett
Abstract: We report on the four-wave mixing of superluminal pulses, in which both the injected and generated pulses involved in the process propagate with negative group velocities. Generated pulses with negative group velocities of up to vg = −c/880 ar ...

20. Ultrafast Demagnetization Measurements using Extreme Ultraviolet Light: Comparison of Electronic and Magnetic Contributions
Topic: Optical Physics
Published: 1/23/2012
Authors: Thomas J Silva, Justin M Shaw, Hans Toya Nembach, Margaret M. Murnane, Henry C. Kapteyn, Chan La-O-Vorakiat, Stefan Mathias, Emrah Turgut, Teale A. Carson, Martin Aeschlimann, Claus M. Schneider
Abstract: Ultrashort pulses of extreme ultraviolet light from high-harmonic generation are a new tool for probing coupled charge, spin, and phonon dynamics with element specificity, attosecond pump-probe synchronization, and time resolution of a few-femtosecon ...

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