Light-Induced Atom Desorption

Meucci, M.; Mariotti, E.; Bicchi, P.; Marinelli, Carmela; Moi, L.

doi:10.1209/0295-5075/25/9/001

Cited by 94 publications

(75 citation statements)

References 8 publications

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“…As an example of the fluorescence increase upon illumination in the case of sodium, in Figure 1, the pictures of a spherical cell coated with PDMS in the absence and in the presence of atom ejection are presented. The following year, the same effect was observed with non coherent and much weaker desorbing light by Meucci et al [3]. In this experiment, photodesorption of Rb atoms from PDMS was measured as a function of the desorbing light intensity and frequency, and the acronym LIAD (Light Induced Atomic Desorption) was introduced [4].…”

Section: Introductionsupporting

confidence: 53%

“…No competition in the free sites occupancy was observed. A monotonic increase of the efficiency with the desorbing photon energy, independent from the atomic species and the coating, was reported [1,3,8,10,13,19]. The absorbance of PDMS, obtained by using a spectrophotometer, is reported for a sample thickness of 1 cm [13].…”

Section: Liad In Silane Compoundsmentioning

confidence: 86%

“…When a coated alkali-metal vapor cell is illuminated with non resonant light (either incoherent or laser) in the mW/cm 2 range, an increase of the vapor density is observed, even larger than one order of magnitude. The large desorption yield indicates that the desorbed atoms come not only from the film surface but also from its bulk [3]. Most of the experiments have been performed in closed cell systems with a quasi-equilibrium between atomic vapor phase, atomic density inside the coating and the solid alkali-metal reservoir, thus the maximum achieved density upon illumination decreases due to the progressive re-adsorption of atoms by the cell walls.…”

Section: Liad In Silane Compoundsmentioning

confidence: 99%

“…LIAD is a non-thermal effect, in fact the number of desorbed atoms does not increase exponentially with the desorbing light intensity and exhibits saturation at higher intensity [3]. For the maximum relative atomic density increase ∆ max as a function of the desorbing light intensity I L , a square root dependence was reported for Rb from PDMS [3,6], for Rb and Cs simultaneously desorbed from PDMS [13], for Rb from OCT [18], Rb from OTS [19], and K from PDMS [10]. For Na from PDMS, a linear dependence of the desorbed atoms has been found at low desorbing light intensity [1].…”

Section: Liad In Silane Compoundsmentioning

confidence: 99%

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Low Energy Atomic Photodesorption from Organic Coatings

et al. 2016

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Organic coatings have been widely used in atomic physics during the last 50 years because of their mechanical properties, allowing preservation of atomic spins after collisions. Nevertheless, this did not produce detailed insight into the characteristics of the coatings and their dynamical interaction with atomic vapors. This has changed since the 1990s, when their adsorption and desorption properties triggered a renewed interest in organic coatings. In particular, a novel class of phenomena produced by non-destructive light-induced desorption of atoms embedded in the coating surface was observed and later applied in different fields. Nowadays, low energy non-resonant atomic photodesorption from organic coatings can be considered an almost standard technique whenever large densities of atomic vapors or fast modulation of their concentration are required. In this paper, we review the steps that led to this widespread diffusion, from the preliminary observations to some of the most recent applications in fundamental and applied physics.

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Section: Introductionsupporting

confidence: 53%

Section: Liad In Silane Compoundsmentioning

confidence: 86%

Section: Liad In Silane Compoundsmentioning

confidence: 99%

Section: Liad In Silane Compoundsmentioning

confidence: 99%

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Low Energy Atomic Photodesorption from Organic Coatings

et al. 2016

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“…When these cells are then exposed to light of sufficiently short wavelength, alkali atoms are desorbed from the paraffin coating into the volume of the cell [24]. This phenomenon, known as light-induced atomic desorption (LIAD), has been observed using a wide range of surfaces: sapphire [40,41,42], silane-coated glass (in particular polydimethylsiloxane) [43,44,45,46,47], superfluid 4 He films [48,49], quartz [50], and porous silica [51]. LIAD is useful as a method for the rapid control of atomic density, and is of particular interest in the development of miniaturized atomic clocks and magnetometers [16].…”

Section: Relaxation Of Atomic Polarization In the Presence Of LImentioning

confidence: 99%

Relaxation of atomic polarization in paraffin-coated cesium vapor cells

et al. 2005

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The relaxation of atomic polarization in buffer-gas-free, paraffin-coated cesium vapor cells is studied using a variation on Franzen's technique of "relaxation in the dark" [Franzen, Phys. Rev. 115, 850 (1959)]. In the present experiment, narrow-band, circularly polarized pump light, resonant with the Cs D2 transition, orients atoms along a longitudinal magnetic field, and time-dependent optical rotation of linearly polarized probe light is measured to determine the relaxation rates of the atomic orientation of a particular hyperfine level. The change in relaxation rates during lightinduced atomic desorption (LIAD) is studied. No significant change in the spin relaxation rate during LIAD is found beyond that expected from the faster rate of spin-exchange collisions due to the increase in Cs density.

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Enhanced Optical and Electric Manipulation of a Quantum Gas of KRb Molecules

Covey¹

2018

Springer Theses

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Reens on the OH Stark decellerator for invaluable advice on AC and DC electric fields.We have also had a very fruitful collaboration with Ana Maria Rey's group. In particular we worked with Michael Foss-Feig and Kaden Hazzard in the early years, and more recently Michael Wall, Martin Garttner, Arghavan Safavi-Naini, and Bihui Zhu. They have all done an excellent job being aware of what our experiment is capable of, and giving us space when we need to address technical issues. We attempted the spin-exchange measurements after Kaden and Ana Maria suggested that we would be able to observe them in the lattice even at our relatively low filling fraction at that time.The JILA instrument shop played a very significant role in much of the work in this thesis, and I have spent a lot of time working with Tracy Keep, Kels Detra, Kim Hagen, Blaine Horner, Todd Asnicar, and Hans Greene. Tracy made the primary contributions to the new apparatus, and was very helpful along the entire journey to address every problem that emerged. A lot can change in six years, and the JILA instrument shop during my PhD is an excellent example of that. Tracy recently passed away after battling with cancer. Kels left JILA a few years ago. Blaine recently retired. Nevertheless, the JILA instrument shops remains an incredible resource.The JILA electronics shop and computing team have been invaluable to our experiment.Terry Brown and Carl Sauer are always available to help us with any electrical or electronics problem, particularly high voltage or AC circuits. Their expertise has played a significant role in the electronics of the new apparatus, such as the servos for large electric fields and the rf and microwave coils for K and Rb spin flips. J. R. Raith in computing has been very helpful with all of our computing needs over the years.On a more personal note, I am thankful to Dan Gresh (Cornell group, eEDM experiment, JILA) for his friendship over the past six years, and for teaching me the art of powerlifting. I viii am also grateful to Rory Barton-Grimley (Aerospace Eng., CU-Boulder) for his friendship and for getting me back into hockey. I have enjoyed playing with him and Carrie Weidner, Seth Caliga, and Cam Straatsma (Anderson group, JILA) over the past several years. I would also like to thank my family for their constant support over the past six years, especially my fiancé Jennifer. 7.5 The electric field orientations that are possible with the electrode configuration of the new apparatus .

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Light-Induced Atom Desorption

Cited by 94 publications

References 8 publications

Low Energy Atomic Photodesorption from Organic Coatings

Low Energy Atomic Photodesorption from Organic Coatings

Relaxation of atomic polarization in paraffin-coated cesium vapor cells

Enhanced Optical and Electric Manipulation of a Quantum Gas of KRb Molecules

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