| dc.description.abstract | Anderson localization is the localization of electronic wave functions resulting
in the suppression of diffusion of waves in a disordered medium. By apply-
ing a non-uniform potential to a Bose Einstein Condensate (BEC), Anderson
localization can be achieved. In this thesis the feasibility of four different meth-
ods for producing a two-dimensional optical trap for a BEC are analyzed for
later use in research on Anderson localization. The use of either a spatial light
modulator (SLM) or an etched mirror prove inadequate. Both a zero-order vor-
tex half-wave retarder and an axicon generate a good ring-shaped optical trap.
The axicon is chosen because of the available optics. An astigmatic Gaussian
beam is used to initially trap the atoms within the ring and con?ne them in
the direction perpendicular to the plane of the optical ring. In order to create
a BEC, the alignment of the magneto optical trap, spin-polarization beam and
the zero-point of the compensation coils of the magnetic ?eld is readjusted and
a BEC of 1.95 x 10^7 atoms is created. | |
