You searched on: Author: edward hagley Sorted by: title
Displaying records 21 to 30 of 47 records.
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21. Highly efficient, broadband coherent surface-mixing-wave generation using amplified
surface plasmonic polaritons
C. J. Zhu, X Zhao, Guoxiang Huang, Lu Deng, Edward W Hagley, Yan Ren
We show that coherent broadband surface mixing-wave (SMW) by a hyper-Raman process can be
efficiently generated near a metallic surface abutting a quasi-three-level gain medium. The
generation process is significantly enhanced by the amplified surf ...
22. Hybrid quantum-well system for
Lu Deng, Edward W Hagley, Chengjie Zhu
We consider a hybrid quantum-well structure consisting of regions whose properties alternate
Raman gain and electromagnetically induced transparency. We present both analytical and
numerical results that
indicate a large light be ...
23. Imaging the Phase of an Evolving Bose-Einstein Condensate Wave Function
J E Simsarian, J Denschlag, M Edwards, Charles W Clark, Lu Deng, Edward W Hagley, Kristian Helmerson, S L. Rolston, William D Phillips
We demonstrate a spatially resolved autocorrelation measurement with a Bose-Einstein condensate (BEC) and measure the evolution of the spatial profile of its quantum mechanical phase. After releasing the BEC from the magnetic trap, the phase develop ...
24. Impact of photo-assisted collisions on superradiant light scattering with Bose-condensates
Lu Deng, Xinyu Luo, Edward W Hagley, Ruquan Wang
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 ...
25. Light-Wave Mixing in Quantum Gases
Lu Deng, Edward W Hagley, R Q. Wang, Charles W Clark
Ninety-five years after Einstein‰s theoretical prediction, we are surrounded in our daily lives
by its practical applications. For example, multi-channel telecommunication lasers and even the
commonly-used green laser pointers that cost just a fe ...
26. Linear and nonlinear Faraday rotations of light polarization in a four-level
Lu Deng, Chengjie Zhu, Edward W Hagley
We investigate linear and nonlinear Faraday effects in a room-temperature, coherently driven
Raman-gain (ARG) medium. By using the multiple-scale method, we derive two nonlinear coupled
equations governing the dynami ...
27. Matter-wave self-imaging in non-Raman-Nath regime pulsed standing optical wave
Ke Li, Lu Deng, Edward W Hagley, M.S. Zhan, M Payne
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 ins ...
28. Measurement of the Coherence of a Bose-Einstein Condensate
Edward W Hagley, Lu Deng, M M Kozuma, M Trippenbach, Y B Band, M Edwards, M R Doery, Paul S Julienne, Kristian Helmerson, S L. Rolston, William D Phillips
We study the coherence properties of a Bose-Einstein condensates using an interference technique. Two 100 ns optical standing wave pulses are applied to a condensate with a variable time delay between them. Each standing wave phase grating makes sm ...
29. Observation of Collective Atomic Recoil Motion in a Degenerate Fermion Gas
Lu Deng, Edward W Hagley
We demonstrate collective atomic recoil motion with a dilute, ultracold, degenerate fermion gas
single spin state. By utilizing an adiabatically decompressed magnetic trap with an aspect
from that of the initial trap, a mom ...
30. Observation of the red-blue detuning asymmetry in matter-wave superradiance
Lu Deng, Edward W Hagley, Qiang Cao, Xiaorui Wang, Xinyu Luo, Ruquan Wang, Fan Yang, Xiaoji Zhou, Xuzong Chen, M. G. Payne, Mingsheng Zhan
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.
contrast to all previous theoretical treatments, which p ...