Controlling atomic vapor density in paraffin-coated cells using light-induced atomic desorption

Karaulanov, T.; Graf, Miriam T.; English, D.; Rochester, Simon; Rosen, Yaniv; Tsigutkin, K.; Budker, Dmitry; Alexandrov, E. B.; Balabas, M. V.; Kimball, Derek F. Jackson; Narducci, Frank A.; Pustelny, Szymon; Yashchuk, Valeriy V.

doi:10.1103/physreva.79.012902

Cited by 54 publications

(35 citation statements)

References 53 publications

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“…In summary, we note that this model is able to reproduce experimental dynamics based on six parameters which determine the density time evolution. This was further confirmed and somehow simplified in a later work [37].…”

Section: Role Of the Reservoirsupporting

confidence: 50%

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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: Role Of the Reservoirsupporting

confidence: 50%

“…In a successive paper, the same authors studied LIAD from paraffin, paying much attention to the role of the cell stem. In the paper, the authors extended the experiment on potassium using UV desorbing light [37].…”

Section: Liad In Paraffinmentioning

confidence: 99%

Low Energy Atomic Photodesorption from Organic Coatings

et al. 2016

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“…The lock is implemented using a sliding glass "bullet" and permits large vapor density changes to be maintained after repeated exposures to desorbing light; for more details on the experimental setup and photographs of cells with this lockable stem design, see Ref. 57. All such cells are spherical with diameter of 3 cm, and the stems remain locked at all times.…”

Section: F Light-induced Atomic Desorption Observationsmentioning

confidence: 99%

“…Recently, LIAD effects on alkali spin relaxation have been investigated, 6 with a focus on non-thermal control of alkali vapor density. 57 The exact mechanisms of LIAD in paraffin are not yet understood; however, it is clear that a combination of surface processes and light-enhanced diffusion of alkali atoms within the bulk of the coating are important. LIAD has been used with silane coatings to load photonic fibers, 35 and it has been used with bare pyrex surfaces to load a chip-scale Bose-Einstein condensate (BEC), 58 although in the latter case the desorption efficiency might be increased by orders of magnitude with a paraffin or silane coating.…”

Section: Introductionmentioning

confidence: 99%

Investigation of antirelaxation coatings for alkali-metal vapor cells using surface science techniques

Seltzer¹,

Michalak²,

Donaldson³

et al. 2010

The Journal of Chemical Physics

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Many technologies based on cells containing alkali-metal atomic vapor benefit from the use of anti-relaxation surface coatings in order to preserve atomic spin polarization. In particular, paraffin has been used for this purpose for several decades and has been demonstrated to allow an atom to experience up to 10,000 collisions with the walls of its container without depolarizing, but the details of its operation remain poorly understood. We apply modern surface and bulk techniques to the study of paraffin coatings, in order to characterize the properties that enable the effective preservation of alkali spin polarization. These methods include Fourier transform infrared spectroscopy, differential scanning calorimetry, atomic force microscopy, near-edge X-ray absorption fine structure spectroscopy, and X-ray photoelectron spectroscopy. We also compare the light-induced atomic desorption yields of several different paraffin materials. Experimental results include the determination that crystallinity of the coating material is unnecessary, and the detection of C=C double bonds present within a particular class of effective paraffin coatings. Further study should lead to the development of more robust paraffin anti-relaxation coatings, as well as the design and synthesis of new classes of coating materials.

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“…In the past decade, laser induced atomic desorption (LIAD) [15][16][17] technique has gain much attention for controlling the atomic density in cells coated with paraffin etc., In such cells the atoms get adsorbed on the surface of the vapor cell. In a typical LIAD experiment, a desorption laser illuminates a coated vapor cell and its effect is studied by the analyzing the absorption/transmission of a weak probe field resonant to some atomic transition of the alkali vapor.…”

mentioning

confidence: 99%

Ultralow-power local laser control of the dimer density in alkali-metal vapors through photodesorption

Jha¹,

Dorfman²,

Yi³

et al. 2012

Appl. Phys. Lett.

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Ultralow-power diode-laser radiation is employed to induce photodesorption of cesium from a partially transparent thin-film cesium adsorbate on a solid surface. Using resonant Raman spectroscopy, we demonstrate that this photodesorption process enables an accurate local optical control of the density of dimer molecules in alkali-metal vapors.Alkali-metal vapor systems are in high demand as time and frequency standards 1 , playing an important role in optical metrology 2 , and are widely used to test fundamental principles in optical and atomic physics 3 . Besides wide rage of applications the alkali-metal vapor is one of the most attractive and powerful model systems for laser-matter interaction, which has enabled some of the most significant discoveries in natural sciences from pioneering experimental demonstrations of radiation pressure on atoms 4 , optical pumping 5,6 , and hyperfine-structure measurements 7 to coherent population trapping 8 , magneto-optical trapping 9 , and Bose-Einstein condensation 10 .A routine technique for the preparation of alkali-metal vapors for a broad variety of laboratory experiments and applications is based on heated alkali-vapor cells. Alkali vapors in such cells include atomic and molecular components whose overall pressure is controlled by the temperature of the cell. Several elegant techniques have been proposed to control the densities of the atomic and molecular fractions in alkali-metal vapors. In particular, Lintz and Bouchiat 12 have demonstrated the laser induced destruction of cesium dimers in a cesium vapor through a quasiresonant process assisted by collisions of cesium molecules with excited-state cesium atoms and later on Ban et al. 13 extended this approach to rubidium. Sarkisyan et al. 14 also developed a simple method of thermal dissociation of cesium dimers in cesium vapor cells.In the past decade, laser induced atomic desorption (LIAD) 15-17 technique has gain much attention for controlling the atomic density in cells coated with paraffin etc., In such cells the atoms get adsorbed on the surface of the vapor cell. In a typical LIAD experiment, a desorption laser illuminates a coated vapor cell and its effect is studied by the analyzing the absorption/transmission of a weak probe field resonant to some atomic transition of the alkali vapor. Work related to

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Controlling atomic vapor density in paraffin-coated cells using light-induced atomic desorption

Cited by 54 publications

References 53 publications

Low Energy Atomic Photodesorption from Organic Coatings

Low Energy Atomic Photodesorption from Organic Coatings

Investigation of antirelaxation coatings for alkali-metal vapor cells using surface science techniques

Ultralow-power local laser control of the dimer density in alkali-metal vapors through photodesorption

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