title: Hyperfine polarization and its normal gradient coefficient of (87)Rb atoms in the vicinity (approximately 10(-5) cm) of coated and uncoated Pyrex glass surfaces.
abstract: We have made regionally specific measurement of the hyperfine polarization <S.I> of 87Rb atoms in the vicinity ( approximately 10(-5) cm) of coated and uncoated Pyrex glass surfaces. We find that the polarization near an uncoated surface decreases rapidly with decreasing distance from the surface whereas for a silicone-coated surface the polarization is independent of the distance from the surface. We have also determined the normal gradient coefficient micro (S.I) of the hyperfine polarization in uncoated cells. In a representative uncoated cell, at a Rb density 7.35 x 10(13) cm(-3) and a pump beam intensity 1.3 W/cm(2), we find micro(S.I)=24+/-7 microm(-1).
authors.affiliation: Department of Physics, Rutgers University, Newark, New Jersey 07102, USA.
authors.forename: K
authors.initials: K
authors.lastname: Zhao
authors.forename: Z
authors.initials: Z
authors.lastname: Wu