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You searched on: Author: edward hagley Sorted by: date

Displaying records 21 to 30 of 49 records.
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21. Impact of photo-assisted collisions on superradiant light scattering with Bose-condensates
Published: 10/4/2012
Authors: Lu Deng, Xinyu Luo, Edward W Hagley, Ruquan Wang
Abstract: We present experimental evidence supporting the postulation that the secondary effects of light assisted collisions are the main reason that the superradiant light scattering efficiency in condensates is asymmetric with respect to the sign of the pum ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910984

22. SURF III: A flexible Synchrotron Radiation Source for Radiometry and Research
Published: 9/1/2011
Authors: Uwe Arp, Charles W Clark, Lu Deng, Nadir S. Faradzhev, Alex P. Farrell, Mitchell L. Furst, Steven E Grantham, Edward W Hagley, Shannon Bradley Hill, Thomas B Lucatorto, Ping-Shine Shaw, Charles S Tarrio, Robert Edward Vest
Abstract: The calculability of synchrotron radiation (SR) makes electron storage rings wonderful light sources for radiometry. The broadband nature of SR allows coverage of the whole spectral region from the x-ray to the far-infrared. Compact low-energy storag ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906750

23. Observation of Collective Atomic Recoil Motion in a Degenerate Fermion Gas
Published: 5/23/2011
Authors: Lu Deng, Edward W Hagley
Abstract: We demonstrate collective atomic recoil motion with a dilute, ultracold, degenerate fermion gas in a single spin state. By utilizing an adiabatically decompressed magnetic trap with an aspect ratio different from that of the initial trap, a mom ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=920362

24. Reply to ,Comment on ,Electromagnetic Wave Dynamics in Matter-Wave Superradiant ScatteringŠ by Wolfgang Ketterle
Published: 3/18/2011
Authors: Lu Deng, Edward W Hagley, Marvin G. Payne
Abstract: The comment by W. Ketterle [1] purports having a viable model of superradiance. However, Ref. [1] admits not being able to explain the red/blue pump detuning asymmetry in matter-wave superradiance that was first observed recently by us [2]. It is cle ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906633

25. Observation of the red-blue detuning asymmetry in matter-wave superradiance
Published: 11/23/2010
Authors: Lu Deng, Edward W Hagley, Qiang Cao, Xiaorui Wang, Xinyu Luo, Ruquan Wang, Fan Yang, Xiaoji Zhou, Xuzong Chen, M. G. Payne, Mingsheng Zhan
Abstract: We show the first experimental observations of matter-wave superradiance using blue-detuned light, and demonstrate a pump-laser detuning asymmetry in the collective atomic recoil motion. In contrast to all previous theoretical treatments, which p ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905929

26. A Green Laser Pointer Hazard
Series: Technical Note (NIST TN)
Report Number: 1668
Published: 8/2/2010
Authors: Jemellie Galang, Alessandro Restelli, Edward W Hagley, Charles W Clark
Abstract: An inexpensive green laser pointer was found to emit 20 mW of infrared radiation during normal use. This is potentially a serious hazard that would not be noticed by most users of such pointers. We find that the problem derives from an unsafe desig ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906138

27. Matter-wave self-imaging by atomic center-of-mass motion induced interference
Published: 12/18/2008
Authors: Ke Li, Lu Deng, Edward W Hagley, M.S. Zhan, M Payne
Abstract: We demonstrate matter-wave self-imaging in a stationary light field in the non-Raman-Nath limit. We show that in a non-instantaneous pulsed standing wave grating significant contributions due to the non-negligible atomic center of mass motion and ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=842522

28. A Fast-Responding Nonlinear Phase Shifter Using an Active Raman Gain Core
Published: 4/22/2008
Authors: Lu Deng, Edward W Hagley, Kaijun Jiang, M Payne
Abstract: Using a lifetime broadened N-scheme with an active-Raman-gain (ARG) Lambda core, we show that large nonlinear phase shift can be induced without signal wave attenuation. The new scheme is not based on the ultra-slow-wave technique and it does no ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=840272

29. Formation and propagation of matched and coupled ultraslow optical soliton pairs in a four-level double-Lambda system
Published: 11/17/2005
Authors: Lu Deng, M G Payne, G X Huang, Edward W Hagley
Abstract: We investigate the simultaneous formation and stable propagation of ultraslow optical soliton pairs in a lifetime broadened four-state atomic system under double- excitation with large one- and two- photon detunings. We show that detrimental pr ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=101495

30. Propagation Dynamics of a Temporally, Amplitude- and Group-Velocity-Matched Two-Mode Ultraslow Wave in a Three-Level Lamda System
Published: 12/22/2004
Authors: Lu Deng, M Payne, Edward W Hagley
Abstract: We investigate the propagation dynamics of a two-mode probe field traveling with ultra-slow group velocities. We show that a strong cross-beam coupling occurs between the two modes of the probe wave. In the adiabatic limit and under appropriate con ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=840172



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