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Title:
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Dipole force cooling of multilevel atoms |
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Author:
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Sackett, Charles Ackley |
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Advisor:
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Hulet, Randall |
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Degree:
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Master of Arts thesis |
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Abstract:
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A theoretical discussion of laser cooling of multilevel atomic systems using intense, blue detuned laser beams is given. A method based on matrix continued fractions is presented, which enables the efficient calculation of the semi-classical force on a multilevel system. The method is applied to a three-level system driven by one standing wave and one travelling wave. The force curves obtained exhibit strong cooling features. Cooling of the three-level system is simulated using the fully quantum mechanical Monte Carlo wave function technique. The simulation predicts efficient cooling to sub-Doppler temperatures. The three-level model is related to a multilevel cooling experiment performed on $\sp7$Li. The experimental results are found to be in reasonable agreement with the three-level model. However, a comparison of the simulation and experiment for a two-level atomic system reveals significant discrepancies, which raises questions about the model and experiment. |
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Citation:
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Sackett, Charles Ackley. "Dipole force cooling of multilevel atoms." Masters Thesis, Rice University, ETD http://hdl.handle.net/1911/13890. |
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Citable link to this page:
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http://hdl.handle.net/1911/13890 |
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Date:
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1994 |
