All-optical vapor density control for electromagnetically induced transparency

Marmugi, Luca; Gozzini, S.; Lucchesini, A.; Bogi, Andrea; Burchianti, Alessia; Marinelli, Carmela

doi:10.1364/josab.29.002729

Cited by 18 publications

(9 citation statements)

References 29 publications

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“…Moreover, the exponential decay in the low-desorption regime was clearly observed in PDMS with Na [2] and K [57] even with violet desorbing light. On the contrary, no evidence of the change of desorption regime is found instead in paraffin in the case of Na, even with more than 1 W of 514 nm radiation [21].…”

Section: Light-enhanced Diffusion At the Coating Surfacementioning

confidence: 89%

“…In a more recent work [57], optical stabilization has been applied to an experiment on Electromagnetically Induced Transparency (EIT) [58] on K in PDMS coated pyrex cells. The experiment has been performed in Hanle configuration, where a narrow magneto-optic resonance is observed with degenerate Zeeman sublevels at zero magnetic field, thus allowing for high resolution measurement of small magnetic fields.…”

Section: Stabilization Of Atomic Densitymentioning

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: Light-enhanced Diffusion At the Coating Surfacementioning

confidence: 89%

Section: Stabilization Of Atomic Densitymentioning

confidence: 99%

Low Energy Atomic Photodesorption from Organic Coatings

et al. 2016

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“…If required, a further reduction in operating temperature could be achieved by using LIAD techniques to modulate the Rb vapor density [51].…”

Section: Discussionmentioning

confidence: 99%

Widefield microwave imaging in alkali vapor cells with sub-100μm resolution

Horsley

Treutlein

2015

New J. Phys.

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We report on widefield microwave vector field imaging with sub-100 m m resolution using a microfabricated alkali vapor cell. The setup can additionally image dc magnetic fields, and can be configured to image microwave electric fields. Our camera-based widefield imaging system records 2D images with a 6 × 6 mm 2 field of view at a rate of 10 Hz. It provides up to 50 m m spatial resolution, and allows imaging of fields as close as 150 m m above structures, through the use of thin external cell walls. This is crucial in allowing us to take practical advantage of the high spatial resolution, as feature sizes in near-fields are on the order of the distance from their source, and represent an order of magnitude improvement in surface-feature resolution compared to previous vapor cell experiments. We present microwave and dc magnetic field images above a selection of devices, demonstrating a microwave sensitivity of 1.4 T Hz 1 2 m per 50 50 140 m 3 ḿ´voxel, at present limited by the speed of our camera system. Since we image 120 × 120 voxels in parallel, a single scanned sensor would require a sensitivity of at least 12 nT Hz 1 2 to produce images with the same sensitivity. Our technique could prove transformative in the design, characterization, and debugging of microwave devices, as there are currently no satisfactory established microwave imaging techniques. Moreover, it could find applications in medical imaging.

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“…On the contrary, when the pump beam is circularly polarized, the amplitude of the crossover resonance is significantly enlarged. In order to investigate the role of the anti-relaxation coating on these phenomena in the SA spectrum, the experiment is performed also in presence of a supplemental flux of atoms produced by the Light-Induced Atomic Desorption (LIAD) [9][10] . It will be shown in the following that K atoms desorbed from the PDMS coating strongly improves the signal.…”

Section: Introductionmentioning

confidence: 99%

Influence of anti-relaxation coating of optical cells on the potassium D₁line saturated absorption

Gozzini

Lucchesini

Marinelli

et al. 2015

18th International School on Quantum Electronics: Laser Physics and Applications

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In this work we present new features observed in the Saturated Absorption (SA) spectrum on the D 1 line of K. In an uncoated optical glass cell containing pure K atoms, excitation by circularly polarized pump beam produces an enhancement of the amplitude of the crossover resonances due to the hyperfine transitions starting from the ground state F g = 2. This effect appears to be much more relevant when K atoms are contained in a cell coated with an anti-relaxation film. Here, the crossover resonance in the F g = 2 set of transition is not observed experimentally with linearly polarized pump light, while in case of circular polarization its amplitude is significantly enlarged. The Light Induced Atomic Desorption (LIAD) effect strongly improves the intensities of the SA resonances observed in coated cell.

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All-optical vapor density control for electromagnetically induced transparency

Cited by 18 publications

References 29 publications

Low Energy Atomic Photodesorption from Organic Coatings

Low Energy Atomic Photodesorption from Organic Coatings

Widefield microwave imaging in alkali vapor cells with sub-100μm resolution

Influence of anti-relaxation coating of optical cells on the potassium D₁line saturated absorption

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All-optical vapor density control for electromagnetically induced transparency

Cited by 18 publications

References 29 publications

Low Energy Atomic Photodesorption from Organic Coatings

Low Energy Atomic Photodesorption from Organic Coatings

Widefield microwave imaging in alkali vapor cells with sub-100μm resolution

Influence of anti-relaxation coating of optical cells on the potassium D1line saturated absorption

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Influence of anti-relaxation coating of optical cells on the potassium D₁line saturated absorption