Direct detection of evanescent electromagnetic waves at a planar dielectric surface by laser atomic spectroscopy

Matsudo, Tatsuo; Hori, Hirokazu; Inoue, Tetsuya; Iwata, Hidehisa; Inoue, Yuzo; Sakurai, Tsunehisa

doi:10.1103/physreva.55.2406

Cited by 46 publications

(21 citation statements)

References 18 publications

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“…Optical spectroscopy using EW is also useful to observe atoms located near the surface. 22,23 A combination of such magnetic and optical techniques at the surface would offer a new tool for use in atomic physics. 24 However, the demonstration of such techniques has been rather limited, partly because magnetic materials that are transparent and, thus, allow optical access are not very common.…”

Section: Introductionmentioning

confidence: 99%

Optical and magnetic properties of a transparent garnet film for atomic physics experiments

et al. 2016

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We investigated the optical and magnetic properties of a transparent magnetic garnet with a particular focus on its applications to atomic physics experiments. The garnet film used in this study was a magnetically soft material that was originally designed for a Faraday rotator at optical communication wavelengths in the near infrared region. The film had a thickness of 2.1 μm and a small optical loss at a wavelength of λ=780 nm resonant with Rb atoms. The Faraday effect was also small and, thus, barely affected the polarization of light at λ=780 nm. In contrast, large Faraday rotation angles at shorter wavelengths enabled us to visualize magnetic domains, which were perpendicularly magnetized in alternate directions with a period of 3.6 μm. We confirmed the generation of an evanescent wave on the garnet film, which can be used for the optical observation and manipulation of atoms on the surface of the film. Finally, we demonstrated a magnetic mirror for laser-cooled Rb atoms using the garnet film.

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Section: Introductionmentioning

confidence: 99%

Optical and magnetic properties of a transparent garnet film for atomic physics experiments

et al. 2016

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“…Observation of total reflection of light at a dielectric/ vapor interface is known to be a powerful spectroscopic tool to investigate atoms near the surface [1][2][3][4][5][6]. The reflected light is attenuated by vapor atoms absorbing the evanescent light which penetrates into the vapor by a few wavelengths from the surface.…”

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Absorption Enhancement of an Electric Quadrupole Transition of Cesium Atoms in an Evanescent Field

2004

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We have observed for the first time reflection spectra of an electric quadrupole transition for the cesium atom (6 (2)S(1/2)-5 (2)D(5/2)) line at an angle of incidence from theta(c)-11.9 to theta(c)+107.5 mrad, where theta(c) is the critical angle for total reflection. From a comparison with the calculated absorption in the attenuated total reflection, the oscillator strengths for s and p polarizations were found to increase with an increase in the angle of incidence by a factor up to 1.5 at theta(c)+83.8 mrad and 2.4 at theta(c)+107.5 mrad, respectively, in the experiment. The dependences of the observed enhancement on the angle of incidence were in good agreement with the calculated ones for the oscillator strength of the quadrupole transition in the evanescent light.

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“…These quantities are due, respectively, to the invariance under spatial parallel-displacement and rotational transform of a specific local atom-plus-surface system. We have already reported an experimental demonstration of pseudo-momentum transfer from evanescent waves to atoms via resonant absorption process near a planar dielectric surface by means of a high-resolution laser spectroscopy at the Cs-D 2 line (Matsudo et al, 1997;Matsudo et al, 1998). In these experiments, the atomic motion, i.e.…”

Section: Properties Of Optical Near-field Interactions and Observationsmentioning

confidence: 99%

State‐selective optical near‐field resonant ionization spectroscopy of atoms near a dielectric surface

Ohdaira

Kijima

Terasawa

et al. 2001

Journal of Microscopy

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SummarySpin-sensitive optical near-field microscopy and spectroscopy are proposed based on the study on the conserved quantities in optical near-field interactions of atoms with dielectric surfaces. A two-step photoionization spectra of Cs atoms resolving hyperfine structures are demonstrated near a planar dielectric surface by using evanescent waves. These techniques of state/spin-selective excitation and highly sensitive detection, combined with the techniques of optical pumping, will open up possibilities of space-and polarization-sensitive detection of optical near-fields using atomic probes. This novel method provides us with a useful technique for the observation of polarization nature of the optical near-field and controlling the spin states of mesoscopic electronic systems.

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Direct detection of evanescent electromagnetic waves at a planar dielectric surface by laser atomic spectroscopy

Cited by 46 publications

References 18 publications

Optical and magnetic properties of a transparent garnet film for atomic physics experiments

Optical and magnetic properties of a transparent garnet film for atomic physics experiments

Absorption Enhancement of an Electric Quadrupole Transition of Cesium Atoms in an Evanescent Field

State‐selective optical near‐field resonant ionization spectroscopy of atoms near a dielectric surface

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