Towards a Degenerate Fermi Gas of Strontium-87 in a 3D Optical Lattice

Author
Abstract
We have designed and constructed a new apparatus towards evaporatively cooling strontium-Ç6 in a far oò-resonant optical dipole trap. _e theory of far oò-resonant optical traps is explained and we derive equations for heating in optical dipole traps due to intensity and pointing noise. A high power laser setup for 1064 nm light delivers a total power of up to 20 W for trapping and evaporatively cooling strontium-Ç6. _e 1064 nm light is delivered with photonic crystal ÿbers, reaching up to 18 W through a single optical ÿber using a water-cooled high-power ÿber connector. We present a design of a low noise photodetector that is used in an intensity servo for the 1064 nm laser system to suppress intensity noise by up to 40 dB. Preliminary results from the ÿrst attempts of evaporatively cooling strontium-Ç6 atoms in a crossed optical dipole trap yield a T/TF = 0.5 per spin state assuming a uniform distribution across all ten nuclear spin states.
Year of Publication
2015
Academic Department
Department of Physics
Degree
Ph.D.
Number of Pages
69
Date Published
2015-05
University
University of Colorado Boulder
City
Boulder
JILA PI Advisors
Advisors - Other
Jonathan Home
PDF
Publication Status