Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/37483
Title: Interaction of a strongly focused light beam with single atoms
Authors: SYED ABDULLAH B S A RAHMAN ALJUNID
Keywords: single atom experiment, strong focusing, atom-light interaction, 2-level system
Issue Date: 28-May-2012
Source: SYED ABDULLAH B S A RAHMAN ALJUNID (2012-05-28). Interaction of a strongly focused light beam with single atoms. ScholarBank@NUS Repository.
Abstract: In this thesis, we investigate the interaction of a strongly focused Gaussian light beam with a single Rubidium-87 atom, trapped in a far off-resonant 980nm optical dipole trap. Two classes of experiments were performed, one with a weak coherent continuous wave light and another with strong coherent light pulses. For the first case, the experimental quantities of extinction (8.2%), reflection(0.16%) and induced phase shift(1°)were measured and related back to the quantity known as the Scattering Ratio. In the pulsed experiments, we investigated the effect of shaping the pulse temporally. The rising exponential and rectangular pulse shapes with different average photon number and different length were compared. For bandwidths of the pulses close to the spontaneous atomic transition linewidth, a rising exponential pulse typically performs better.
URI: http://scholarbank.nus.edu.sg/handle/10635/37483
Appears in Collections:Ph.D Theses (Open)

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