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Displaying records 11 to 20 of 47 records.
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11. Linear and nonlinear Faraday rotations of light polarization in a four-level active-Raman-gain medium
Published: 8/28/2013
Authors: Lu Deng, Chengjie Zhu, Edward W Hagley
Abstract: We investigate linear and nonlinear Faraday effects in a room-temperature, coherently driven four-level active- Raman-gain (ARG) medium. By using the multiple-scale method, we derive two nonlinear coupled envelope equations governing the dynami ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914050

12. Dynamic light deflection in an active Raman-gain medium using a spatially inhomogeneous pump
Published: 7/25/2013
Authors: Lu Deng, Edward W Hagley, Chengjie Zhu
Abstract: We study optical wave deflection in a three-level active Raman gain medium using a spatially inhomogeneous pump field. Using the eikonal approximation, we derive an analytical expression for the deflection angle and demonstrate more than an ord ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913785

13. Hybrid quantum-well system for wavelength-channel selection
Published: 7/25/2013
Authors: Lu Deng, Edward W Hagley, Chengjie Zhu
Abstract: We consider a hybrid quantum-well structure consisting of regions whose properties alternate between active Raman gain and electromagnetically induced transparency. We present both analytical and numerical results that indicate a large light be ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913757

14. Highly Efficient Counter-Propagating Narrow-Band Ultraviolet Frequency Conversion in a Quantum Gas
Published: 5/15/2013
Authors: chengjie Zhu, Lu Deng, Edward W Hagley
Abstract: We show that highly efficient ultraviolet frequency up conversion can be established in a single-component quantum gas in the counter-propagating weak pump beam geometry where no frequency up conversion can occur in a normal gas. We also show that al ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913493

15. Light-Wave Mixing in Quantum Gases
Published: 5/1/2013
Authors: Lu Deng, Edward W Hagley, R Q. Wang, Charles W Clark
Abstract: 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912574

16. Fast, Optically Controlled Kerr Phase Shifter for Digital Signal Processing
Published: 4/18/2013
Authors: Runbing Li, Lu Deng, Edward W Hagley, Joshua C Bienfang, Zachary H Levine
Abstract: We demonstrate an optically controlled Kerr phase shifter using a room-temperature Rb85 vapor operating in a Raman gain scheme. Phase shifts from zero to 𝜋 relative to an unshifted reference wave are observed, and gated operations are dem ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913278

17. Fast, All-Optical, Zero to PI Continuously Controllable Kerr Phase Gate
Published: 3/13/2013
Authors: Runbing Li, Lu Deng, Edward W Hagley
Abstract: We demonstrate a fast-responding Kerr phase gate using a room-temperature 85Rb vapor operated in a Raman gain scheme where the probe/signal wave travels ,superluminallyŠ. Continuously controllable nonlinear Kerr phase shift of the probe wave from 0 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912938

18. Effect of atomic coherence on "temporal cloaking" in atomic vapors
Published: 2/27/2013
Authors: Runbing Li, Lu Deng, Edward W Hagley, Joshua C Bienfang, M G Payne, Mo-Lin Ge
Abstract: We discuss a different scheme to achieve temporal cloaking in warm atomic vapors. Instead of creating a temporal-spatial window in a patched broadband short optical pulse using static differential dispersion of an optical fiber, we create a tempo ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912400

19. 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

20. 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



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