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Bose-Einstein Condensates in an Optical Lattice
2006We report a series of experiments performed on the dynamics of a Bose-Einstein condensate (BEC) in the presence of a periodic potential realized by means of an optical lattice. BEC allows to finely investigate properties of periodic potentials already known from the solid state physics, but also opens the field of non-linear matter waves in periodical ...
FORT, CHIARA, FALLANI, LEONARDO
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Optical microcavities in condensed matter systems
Solid State Communications, 1994Abstract Optical microcavities with volumes approaching a cubic wavelength are being fabricated in a wide variety of condensed matter systems including glasses, semiconductors and organic materials. The strong coupling between the electronic states emitting in these microcavities and the cavity mode fields gives rise to new radiative phenomena of ...
R.E. Slusher, C. Weisbuch
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Optical femtosecond filaments in condensed media
Physical Review A, 2006The self-guiding of femtosecond light pulses in dense materials is investigated both theoretically and numerically for various laser wavelengths. Special attention is paid on chromatic dispersion, plasma gain, and multiphoton absorption in the nonlinear evolution of ultrashort filaments.
S. Skupin, R. Nuter, L. Bergé
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Atom optics with Bose-Einstein condensates
Technical Digest. Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference, 2003Summary form only given. We use optical, stimulated Raman transitions to coherently split and transfer momentum to Bose-Einstein condensates of sodium atoms. With this technique, we have demonstrated a highly directional, quasi-continuous atom laser and four-wave mixing of matter-waves.
L. Deng +6 more
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Two-center optical transitions in condensed matter
Journal of Luminescence, 1984The absorption of a single photon by the simultaneous excitation of two rare-earth ions was first reported by Varsanyi and Dieke in 1961.1 D. L. Dexter explained this unusual observation by including the electron-electron interactions (that also give rise to energy transfer) between the rare earth ions with perturbation theory.2 In the 70's Dexter ...
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Atom Optics with Bose-Einstein Condensation Using Optical Potentials
2005Using our Bose-Einstein condensation (BEC) machine and the Bragg spectroscopy technique we study excitation evolution and decay in BEC. New results have been achieved with this system, and are reported here. We also develop various theoretical models for simulating atomic optical behavior in dynamically changing trapping schemes.
N. Katz +5 more
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Atom Optics With Bose-Einstein Condensates
2005Summary form only given. The application of coherent matter waves in phase-sensitive experiments, such as atom interferometers, necessitates the understanding of their evolution when being manipulated by atom optical elements like mirrors and beamsplitters.
S. Burger +3 more
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Unraveling DNA Condensation with Optical Tweezers
Science, 2004Optical tweezers have revealed remarkable molecular details about cellular events, ranging from the movement of protein motors along molecular tracks to the unfolding pathways of RNA. In her Perspective, [Zhuang][1] introduces us to a new study ([ Case et al .][2]) in which optical tweezers are used to elucidate how condensin proteins help DNA to take ...
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Ion optics of parallel plane condensers
International Journal of Mass Spectrometry and Ion Physics, 1975Abstract The trajectory of a charged particle in the parallel plane condenser is calculated for the case where the deflection angle is not large (⪅ 20°). All ion optical properties are given by the product of three transfer matrices corresponding to the entrance fringing field, the idealized main field and the exit fringing field. The matrix elements
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