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Measurement of the atom-surface van der Waals interaction by transmission spectroscopy in a wedged nanocell

Measurement of the atom-surface van der Waals interaction by transmission spectroscopy in a wedged nanocell

We demonstrate a method for measuring atom-surface interactions using transmission spectroscopy of thermal vapors confined in a wedged nano-cell. The wedged shape of the cell allows complementary measurements of both the bulk atomic vapor and atoms close to surfaces experiencing strong van der Waals atom-surface interaction. These are used to …