Selective reflection of light from Rb2 molecular vapor

Shmavonyan, Svetlana; Khanbekyan, Aleksandr; Gogyan, A.; Movsisyan, Marina; Papoyan, A.

doi:10.1016/j.jms.2015.04.006

Cited by 5 publications

(3 citation statements)

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“…Since sapphire crystal is transparent across a wide range of wavelengths, from the visible to the infrared spectrum, sapphire crystals have been used as optical windows in a number of alkali-vapor cell experiments conducted at high temperatures [6,[11][12][13][14][15][16][17]. Sapphire-windowed cells have also been used in atom-surface interaction experiments [13,15,16,18] and to store hyperpolarized noble gases and liquids [19,20]. The sapphire cell reported in [20] has the unique feature that the sapphire windows were diffusion-bonded to a sapphire tube without any binders or glues: the sapphire-sapphire bonding reduces stress-induced birefringence of the sapphire windows caused by differences in expansion curves [7]; the absence of glues may result in low contamination and low background-gas pressure.…”

Section: Introductionmentioning

confidence: 99%

“…Aluminum oxide materials (Al 2 O 3 ) such as crystalline sapphire and polycrystalline alumina (PCA) are alkali-resistant even at higher temperatures (for example, up to ∼1500 • C for sodium [6] and ∼1000 • C for cesium [7]) unless they are exposed to hot lithium vapor [8][9][10]. Since sapphire crystal is transparent across a wide range of wavelengths, from the visible to the infrared spectrum, sapphire crystals have been used as optical windows in a number of alkali-vapor cell experiments conducted at high temperatures [6,[11][12][13][14][15][16][17]. Sapphire-windowed cells have also been used in atom-surface interaction experiments [13,15,16,18] and to store hyperpolarized noble gases and liquids [19,20].…”

Section: Introductionmentioning

confidence: 99%

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Spectroscopic study of a diffusion-bonded sapphire cell for hot metal vapors

et al. 2017

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Characteristics of a diffusion-bonded sapphire cell for optical experiments with hot metal vapors were investigated. The sapphire cell consisted of sapphire-crystal plates and a borosilicate-glass tube, which were bonded to each other by diffusion bonding without any binders or glues. The glass tube was attached to a vacuum manifold using the standard method applied in glass processing, filled with a small amount of Rb metal by chasing with a torch, and then sealed. The cell was baked at high temperatures, and optical experiments were then performed using rubidium atoms at room temperature. The sapphire cell was found to be vacuum tight, at least up to 350°C, and the sapphire walls remained clear over all temperatures. From the optical experiments, the generation of a background gas was indicated after baking at 200°C. The background gas pressure was low enough to avoid pressure broadening of absorption lines but high enough to cause velocity-changing collisions of Rb atoms. The generated gas pressure decreased at higher temperatures, probably due to chemical reactions.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Spectroscopic study of a diffusion-bonded sapphire cell for hot metal vapors

et al. 2017

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“…The above advantages of FMSR can have an important impact for molecular spectroscopy [1-3, 8, 41-43] allowing simultaneous measurements of transition frequencies, intensities and collisional broadenings. Although attempts have been made to probe alkali dimers [44] at high temperatures, high resolution FMSR has so far been exclusively performed on atomic vapors.…”

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confidence: 99%