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Displaying records 41 to 47.
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41. Coherence Properties of an Atom Laser
Published: 1/1/2000
Authors: M Trippenbach, Y B Band, M Edwards, M R Doery, Paul S Julienne, Edward W Hagley, Lu Deng, M M Kozuma, Kristian Helmerson, S L. Rolston, William D Phillips
Abstract: We study the coherence properties of an atom laser, which operates by extracting atoms from a gaseous Bose-Einstein condensate via a two-photon Raman process, by analyzing a recent experiment [(Hagley et al., submitted to Phys. Rev. Lett. (1999)]. W ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=840352

42. Generating Solitons by Phase Engineering of a Bose-Einstein Condensate
Published: 1/1/2000
Authors: J Denschlag, J E Simsarian, D L Feder, Charles W Clark, L A Collins, J Cubizolles, Lu Deng, Edward W Hagley, Kristian Helmerson, W P Reinhardt, S L. Rolston, B I Schneider, William D Phillips
Abstract: We demonstrate quantum phase engineering using two novel techniques that allow us to write and read the spatial phase of a Bose-Einstein condensate (BEC). We design and produce a quantum state by optically imprinting phasepatterns onto a condensate ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=840391

43. Temporal, Matter-Wave Dispersion Talbot Effect
Published: 12/1/1999
Authors: Lu Deng, Edward W Hagley, J Denschlag, J E Simsarian, M Edwards, Charles W Clark, Kristian Helmerson, S L. Rolston, William D Phillips
Abstract: We demonstrate an exact Talbot effect based on the dispersion relation of matter waves. A short-pulse, optical standing wave is used to write a phase grating on a sodium condensate and a second, identical diffraction pulse is applied after a variabl ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=840378

44. Measurement of the Coherence of a Bose-Einstein Condensate
Published: 10/1/1999
Authors: 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
Abstract: 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=840349

45. A Well Collimated Quasi-Continuous Atom Laser
Published: 3/1/1999
Authors: Edward W Hagley, Lu Deng, M M Kozuma, J Wen, Kristian Helmerson, S L. Rolston, William D Phillips
Abstract: We demonstrate extraction of sodium atoms from a trapped Bose-Einstein condensate (BEC) using a coherent stimulated Raman process. Optical Raman pulses drive transitions between trapped and untrapped magnetic sublevels so as to give the output coupl ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=840347

46. Four-Wave Mixing With Matter Waves
Published: 3/1/1999
Authors: Lu Deng, Edward W Hagley, J Wen, M Trippenbach, Y B Band, Paul S Julienne, J E Simsarian, Kristian Helmerson, S L. Rolston, William D Phillips
Abstract: The advent of the laser as an intense, coherent light source gave birth to nonlinear optics, which now plays an important role in many areas of science and technology. One of the first applications of nonlinear optics was the production of coherent ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=840338

47. Coherent Splitting of Bose-Einstein Condensed Atoms With Optically Induced Bragg Diffraction
Published: 2/1/1999
Authors: M M Kozuma, Lu Deng, Edward W Hagley, J Wen, R Lutwak, Kristian Helmerson, S L. Rolston, William D Phillips
Abstract: We exposed Bose-Einstein condensed sodium atoms to a traveling periodic optical potential and observed coherent splitting of the condensate due to Bragg diffraction. Using the momentum selectivity of the scattering, we were able to separate a compon ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=840348



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