Observation of nonthermal, light-induced desorption of Cs and Rb atoms from paraffin coating is reported. Buffer-gas-free paraffin-coated cells containing Cs and Rb were exposed to laser light of various intensities and frequencies, and the change of the vapor densities as a function of time was investigated. Because atomic polarization relaxes very slowly in paraffin-coated cells (spin-relaxation times can be $\ensuremath{\gtrsim}1\mathrm{s}),$ they are applied in a variety of precision measurements (e.g., magnetometry, discrete symmetry tests, etc.). Light-induced desorption may be useful in such measurements as a method to control atomic density without changing the temperature of the cell.Observation of nonthermal, light-induced desorption of Cs and Rb atoms from paraffin coating is reported. Buffer-gas-free paraffin-coated cells containing Cs and Rb were exposed to laser light of various intensities and frequencies, and the change of the vapor densities as a function of time was investigated. Because atomic polarization relaxes very slowly in paraffin-coated cells (spin-relaxation times can be $\ensuremath{\gtrsim}1\mathrm{s}),$ they are applied in a variety of precision measurements (e.g., magnetometry, discrete symmetry tests, etc.). Light-induced desorption may be useful in such measurements as a method to control atomic density without changing the temperature of the cell.

Physical Review AOct 23, 2002154 citations

Double resonance spectroscopy of laser-cooled Rb atoms

Alastair G. Sinclair, Barry D. McDonald, Erling Riis +1 more

Optics CommunicationsMar 1, 199427 citations

Laser Cooling and Trapping of Rb Atoms

S. Chakraborty, A. Banerjee, Ayan Ray +4 more

Dec 1, 20060 citations

Light-induced spin-polarized desorption of Rb atoms from Co surfaces

K. Asakawa, Naoki Tanabe, Oki Watanabe +4 more

We investigated the spin polarization of Rb atoms undergoing light-induced desorption from a spin-polarized Co (110) surface. Desorption of Rb atoms was induced via pulsed UV irradiation of the Rb-adsorbed Co surface. The number of desorbed atoms, their velocity distribution, and their spin polarization were measured via the absorption of circularly polarized light resonant with the desorbed Rb atoms. The results were analyzed in conjunction with density functional theory calculations, indicating that the desorbed Rb atoms were spin polarized. This was explained by a nonthermal desorption mechanism accompanying spin-polarized electron transfer between the Co surface and adsorbed Rb.We investigated the spin polarization of Rb atoms undergoing light-induced desorption from a spin-polarized Co (110) surface. Desorption of Rb atoms was induced via pulsed UV irradiation of the Rb-adsorbed Co surface. The number of desorbed atoms, their velocity distribution, and their spin polarization were measured via the absorption of circularly polarized light resonant with the desorbed Rb atoms. The results were analyzed in conjunction with density functional theory calculations, indicating that the desorbed Rb atoms were spin polarized. This was explained by a nonthermal desorption mechanism accompanying spin-polarized electron transfer between the Co surface and adsorbed Rb.

arXiv:2601.08442Physical review. B./Physical review. BJul 31, 20260 citations

Spectroscopy of Rb atoms in metastable ground-Rydberg molecules and in high-intensity laser traps

C. R. Patterson, Sophia F. R. TenHuisen, Jamie MacLennan +2 more

Bulletin of the American Physical SocietyMay 31, 20180 citations

Quantitative measurements of light-induced desorption of rubidium atoms from quartz substrates

K. Kitagami, K. Hosumi, K. Goto +1 more

We investigated the light-induced desorption (LID) of Rb atoms from quartz substrates to understand better the LID observed in alkali-metal vapor cells used in laser cooling experiments. The substrate was first exposed to Rb under ultrahigh vacuum conditions. The Rb was found to diffuse into the substrate by x-ray photoelectron spectroscopy. Rb atoms were then deposited with a density of $\ensuremath{\sim}{10}^{15}$ atoms/cm ${}^{2}$ on the surface, from which LID was observed upon irradiation by ultraviolet light. The LID rate depended linearly on the light intensity in the investigated range up to 15 mW/cm ${}^{2}$ . A typical value was ${10}^{10}$ atoms/(s cm ${}^{2}$ ) per mW/cm ${}^{2}$ at a photon energy of 4.3 eV (290 nm in wavelength). We found that the LID rate increased with photon energy in the range 1.8--4.3 eV (700--290 nm in wavelength).We investigated the light-induced desorption (LID) of Rb atoms from quartz substrates to understand better the LID observed in alkali-metal vapor cells used in laser cooling experiments. The substrate was first exposed to Rb under ultrahigh vacuum conditions. The Rb was found to diffuse into the substrate by x-ray photoelectron spectroscopy. Rb atoms were then deposited with a density of $\ensuremath{\sim}{10}^{15}$ atoms/cm${}^{2}$ on the surface, from which LID was observed upon irradiation by ultraviolet light. The LID rate depended linearly on the light intensity in the investigated range up to 15 mW/cm${}^{2}$. A typical value was ${10}^{10}$ atoms/(s cm${}^{2}$) per mW/cm${}^{2}$ at a photon energy of 4.3 eV (290 nm in wavelength). We found that the LID rate increased with photon energy in the range 1.8--4.3 eV (700--290 nm in wavelength).

Physical Review AJun 19, 201211 citations

{}^{2}

on the surface, from which LID was observed upon irradiation by ultraviolet light. The LID rate depended linearly on the light intensity in the investigated range up to 15 mW/cm

{}^{2}

. A typical value was

{10}^{10}

atoms/(s cm

{}^{2}

) per mW/cm

{}^{2}

at a photon energy of 4.3 eV (290 nm in wavelength). We found that the LID rate increased with photon energy in the range 1.8--4.3 eV (700--290 nm in wavelength).