We present an experimental investigation of electromagnetically-induced absorption (EIA) at the D1 line of 87Rb contained in an anti-relaxation coated vacuum optical cell. The configuration includes a pump and a probe beam propagating in opposite directions and having mutually orthogonal linear polarizations; the probe beam absorption is registered depending on the value of a magnetic field scanned around zero and applied collinearly to the laser beams. The advantages of this scheme have been recently evidenced in vapor cells filled with a buffer gas. In the present work we studied the width and the contrast of the EIA resonances obtained in a coated cell for different values of the pump power. The results are compared with those obtained in a buffer gas cell for the same transition of 87Rb. The theoretical calculations are in good agreement with the experiment.
|Number of pages||5|
|Journal||Journal of Physics: Conference Series|
|Publication status||Published - 1 Apr 2020|
|Event||21st International Summer School on Vacuum, Electron and Ion Technologies, VEIT 2019 - Sozopol, Bulgaria|
Duration: 23 Sep 2019 → 27 Sep 2019