TY - THES
AU - Nelson Oppong
AB - 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.
BT - Department of Physics
CY - Boulder
DA - 2015-05
N2 - 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.
PB - University of Colorado Boulder
PP - Boulder
PY - 2015
EP - 69
T2 - Department of Physics
TI - Towards a Degenerate Fermi Gas of Strontium-87 in a 3D Optical Lattice
VL - Ph.D.
ER -