Latin America Optics and Photonics Conference

Ultra-high Flux Atom Lasers

Wolf von Klitzing, Vasiliki Bolpasi, Nikolaos K. Efremidis, Michael Morrissey, Paul C. Condylis, Mark A. Baker

Published Jan 1, 2014• 0 citations

Abstract

We present a novel type of atom laser, which uses strong RF-fields to produce ultra-high flux matter-wave beams from a magnetically trapped Bose-Einstein Condensates (FP7-ICT-601180). Article not available.

DOI: 10.1364/laop.2014.lf1a.3

Related papers

Atom lasers and phase coherence of atomic Bose gases

Immanuel Bloch, Theodor W. Hänsch, Tilman Esslinger

Using continuous radio-frequency waves a coherent beam of atoms can be extracted from a magnetically trapped gaseous Bose-Einstein condensate. These novel atomic beams have matter-wave properties that are very similar to those of laser light in classical optics and are therefore called atom lasers. Furthermore, coupling out atoms from a Bose gas allows one to probe the dramatic changes in the phase coherence properties of the trapped atomic gas above and below the condensation temperature.

Mar 1, 20010 citations

All-optical realization of an atom laser

Giovanni Cennini, Gunnar Ritt, Carsten Geckeler +1 more

A Bose-Einstein condensate with atoms in a magnetic field-insensitive spin projection was created by direct evaporative cooling in a single-beam optical dipole trap. Condensed atoms were extracted to realize a novel type of atom laser.

Conference on Lasers and Electro-OpticsJan 1, 20047 citations

All-Optical Realization of an Atom Laser

Giovanni Cennini, Gunnar Ritt, Carsten Geckeler +1 more

We demonstrate an atom laser using all-optical techniques. A Bose-Einstein condensate of rubidium atoms is created by direct evaporative cooling in a quasistatic dipole trap realized with a single, tightly focused CO2-laser beam. An applied magnetic field gradient allows the formation of the condensate in a field-insensitive m(F)=0 spin projection only, which suppresses fluctuations of the chemical potential from stray magnetic fields. A collimated and monoenergetic beam of atoms is extracted from the Bose-Einstein condensate by continuously lowering the dipole trapping potential in a controlled way to form a novel type of atom laser.

arXiv:cond-mat/0307620Physical Review LettersDec 12, 200386 citations

Atom lasers: production, properties and prospects for precision inertial measurement

Nicholas P. Robins, P. A. Altin, J. E. Debs +1 more

We review experimental progress on atom lasers out-coupled from Bose-Einstein condensates, and consider the prop-erties of such beams in the context of precision inertial sensing. The atom laser is the matter-wave analog of the optical laser. Both devices rely on Bose-enhanced scattering to produce a macroscopically populated trapped mode that is output-coupled to produce an intense beam. In both cases, the beams often display highly desirable properties such as low divergence, high spectral flux and a simple spatial mode that make them useful in practical applications, as well as the potential to perform measurements at or below the quantum projection noise limit. Both devices display similar second-order correlations that differ from thermal sources. Because of these properties, atom lasers are a promising source for application to precision inertial measurements.

Aug 17, 201690 citations

New Atom Lasers Eject Atoms or Run CW

Gloria B. Lubkin

The experimental observation of Bose–Einstein condensation (BEC) in rubidium in 1995 demonstrated that a macroscopic number of bosons could be produced in a single quantum state of trapped atoms. The occupation of a single quantum state by a large number of identical bosons is the matter-wave analog of the storage of photons in a single mode of a laser cavity. In a conventional laser, one extracts a coherent beam of photons from a cavity by using a partially transmitting mirror as an output coupler. In 1997, Wolfgang Ketterle and his collaborators at MIT built a pulsed output coupler that extracted matter waves from a condensate, and they observed interference between atoms from two separate condensates, thereby demonstrating an atom laser for the first time (see PHYSICS TODAY, March 1997, page 17).

Physics TodayApr 1, 19991 citation

An ultra-high flux matter-wave laser from a highly flexible ioffe-pritchard trap

Βασιλική Μπόλπαση

This thesis describes the development and construction of a machine for producinghigh atom-number Bose-Einstein Condensates (BECs). Emphasis is given to thenovel Ioe-Pritchard magnetic trap used, that consists exclusively of circular coils.This allowed us to achieve higher gradients and thus tighter connements [1].This thesis also describes a novel atom-laser output-coupler based on time dependentadiabatic potentials (TDAP) [2]. In this method strong rf elds are usedto deform the trapping potential. Contrary to the traditional weak rf methods thatextracts the atoms from the center of the BEC, the TDAP atom lasers emerge fromthe edge of the condensate. This provides the atom lasers with low divergence.Furthermore, the atoms are outcoupled from the BEC at an arbitrarily large rateleading to uxes per trapped atom sixteen times higher compared to the brightestquasi-continuous atom laser.Finally, presented is the coldest thermal atom beam to date. Using the TDAPoutcoupling, we produced thermal atom beams with temperatures as low as 200 nK,which makes it, by two orders of magnitude, the coldest thermal beam ever observed.Something like that would be very useful for high-resolution spectroscopy of ultracoldcollisions.

May 1, 20140 citations