All-optical generation and photoassociative probing of sodium Bose-Einstein condensates

Abstract

We demonsatrate an all optical technique to evaporatively produce sodium Bose-Einstein condensates (BEC). We use a crossed-dipole trap formed from light near 1060 nm, and a simple ramp of the intensity to force evaporation. In addition, we introduce photoassociation as diagnostic of the trap loading process, and show that it can be used to detect the onset of Bose-Einstein condensation. Finally, we demonstrate the straightforward production of multiple traps with condensates using this technique, and that some control over the spinor state of the BEC is achieved by positioning the trap as well.

8 pages, 10 figures

References in corpus (7)

• Bose-Einstein condensation of chromium
• Optical Confinement of a Bose-Einstein Condensate
• Observation of a Strongly-Interacting Degenerate Fermi Gas of Atoms
• All Optical Formation of an Atomic Bose-Einstein Condensate
• All-Optical Production of a Degenerate Fermi Gas
• Effect of cold collisions on spin coherence and resonance shifts in a magnetically trapped ultra-cold gas
• Sodium Bose-Einstein Condensates in an Optical Lattice

Cited by in corpus (20)

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• Production of Sodium Bose--Einstein condensates in an optical dimple trap
• Optimized production of large Bose Einstein Condensates
• Evaporative cooling of a small number of atoms in a single-beam microscopic dipole trap
• Rabi switch of condensate wavefunctions in a multicomponent Bose gas
• All optical cooling of ${}^{39}$K to Bose Einstein condensation
• All-Optical BEC in a 1.06 micron dipole trap
• Fast production of ultracold sodium gases using light--induced desorption and optical trapping
• All-optical production of 7Li Bose-Einstein condensation using Feshbach resonances
• A simple and efficient all-optical production of spinor condensates
• Solid-state laser system for laser cooling of Sodium
• A two-frequency acousto-optic modulator driver to improve the beam pointing stability during intensity ramps
• Light forces in ultracold photoassociation
• Loading of atoms into an optical trap with high initial phase-space density
• Optimal geometry for efficient loading of an optical dipole trap
• Interisotope effects in optimal dual-isotope loading into a shallow optical trap
• The influence of optical molasses in loading a shallow optical trap
• Spinor atom-molecule conversion via laser-induced three-body recombination
• Equilibrium trapping of cold atoms using dipole and radiative forces in an optical trap