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

Displaying records 11 to 20 of 49 records.
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11. Suppression of Directional Light-Wave Mixing in Normal and Quantum Gases
Published: 10/30/2013
Authors: Lu Deng, Chengjie Zhu, Edward W Hagley, W R Garrett
Abstract: We discuss nonlinear optical processes in the presence of quantum gases. We show that in contrast to a normal gas where the medium ,passivelyŠ participates in nonlinear optical processes, quantum gases ,activelyŠ interact with the wave mixing proce ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914201

12. Optical cloaking using alternate Raman gain and free-space media in the presence of spatially distributed pump fields
Published: 10/22/2013
Authors: Chengjie Zhu, Lu Deng, Edward W Hagley, Mo-Lin Ge
Abstract: We discuss an optical ,cloakingŠ scheme using three-level active Raman gain media in tandem in the presence of a spatially distributed pump field. Using eikonal approximation we first derive analytically the deflection angle and show that the t ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914411

13. 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

14. 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

15. Hybrid quantum-well system for wavelength-channel selection
Published: 6/28/2013
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

16. Highly Efficient Counter-Propagating Narrow-Band Ultraviolet Frequency Conversion in a Quantum Gas
Published: 5/14/2013
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

17. 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

18. 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

19. 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

20. 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



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