Tapered optical fibres as a probe from MOT characteristics
Tapered optical fibres as a probe from MOT characteristics
Tapered optical fibres as a probe from MOT characteristics
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<strong>MOT</strong> Lifetime results• <strong>MOT</strong> lifetime is a me<strong>as</strong>ure of the time a<strong>MOT</strong> can exist without any backgroundvapour to load the <strong>MOT</strong> and atoms collidewith atoms of different species• Effect is independent of getter current.• Difference in lifetime due to P.D.sensitivity to background fluorescenceThis effect is not seen when thelifetime is me<strong>as</strong>ured using aTONFThe fibre in sensitive to lownumbers of atoms that remaintrapped for long period of time.For higher getter currents thedensity of the <strong>MOT</strong> incre<strong>as</strong>es thustaking longer to decay.
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